Add wxCollapsibleHeaderCtrl widget.

This simple class has a collapsed state which is indicated by a small button and a label. It is now used in the generic implementation of wxCollapsiblePane.

It could be used in more complex layouts than wxCollapsiblePane and is therefore available and documented to the user.

Makefile.in

@@ -3292,6 +3292,7 @@ COND_TOOLKIT_MSW_GUI_HDR =  \
 	wx/msw/toplevel.h \
 	wx/msw/treectrl.h \
 	wx/msw/window.h \
+	wx/generic/collheaderctrl.h \
 	wx/msw/checklst.h \
 	wx/msw/fdrepdlg.h \
 	wx/msw/fontdlg.h \
@@ -3737,6 +3738,7 @@ COND_TOOLKIT_WINCE_GUI_HDR =  \
 	wx/msw/toplevel.h \
 	wx/msw/treectrl.h \
 	wx/msw/window.h \
+	wx/generic/collheaderctrl.h \
 	wx/generic/fdrepdlg.h \
 	wx/generic/filedlgg.h \
 	wx/generic/fontdlgg.h \
@@ -4279,6 +4281,7 @@ COND_USE_GUI_1_ALL_GUI_HEADERS =  \
 	wx/xpmhand.h \
 	wx/xrc/xmlreshandler.h \
 	wx/systhemectrl.h \
+	wx/collheaderctrl.h \
 	$(LOWLEVEL_HDR) \
 	$(GUI_CORE_HEADERS) \
 	$(ADVANCED_HDR) \
@@ -4952,6 +4955,7 @@ COND_USE_GUI_1_WXUNIV_1___CORE_SRC_OBJECTS =  \
 	monodll_univ_toolbar.o \
 	monodll_topluniv.o \
 	monodll_winuniv.o \
+	monodll_collheaderctrlg.o \
 	monodll_gtk.o \
 	monodll_metal.o \
 	monodll_mono.o \
@@ -5620,7 +5624,8 @@ COND_TOOLKIT_COCOA___GUI_SRC_OBJECTS =  \
 	monodll_paletteg.o \
 	monodll_regiong.o \
 	monodll_generic_statusbr.o \
-	monodll_generic_textmeasure.o
+	monodll_generic_textmeasure.o \
+	monodll_collheaderctrlg.o
 @COND_TOOLKIT_COCOA@__GUI_SRC_OBJECTS = $(COND_TOOLKIT_COCOA___GUI_SRC_OBJECTS)
 COND_TOOLKIT_GTK_TOOLKIT_VERSION____GUI_SRC_OBJECTS =  \
 	monodll_generic_accel.o \
@@ -5666,7 +5671,8 @@ COND_TOOLKIT_GTK_TOOLKIT_VERSION____GUI_SRC_OBJECTS =  \
 	monodll_gtk1_stattext.o \
 	monodll_gtk1_toolbar.o \
 	monodll_gtk1_textctrl.o \
-	monodll_gtk1_tglbtn.o
+	monodll_gtk1_tglbtn.o \
+	monodll_collheaderctrlg.o
 @COND_TOOLKIT_GTK_TOOLKIT_VERSION_@__GUI_SRC_OBJECTS = $(COND_TOOLKIT_GTK_TOOLKIT_VERSION____GUI_SRC_OBJECTS)
 COND_TOOLKIT_GTK_TOOLKIT_VERSION_2___GUI_SRC_OBJECTS =  \
 	monodll_generic_accel.o \
@@ -5844,7 +5850,8 @@ COND_TOOLKIT_MOTIF___GUI_SRC_OBJECTS =  \
 	monodll_prntdlgg.o \
 	monodll_generic_statline.o \
 	monodll_generic_statusbr.o \
-	monodll_tabg.o
+	monodll_tabg.o \
+	monodll_collheaderctrlg.o
 @COND_TOOLKIT_MOTIF@__GUI_SRC_OBJECTS = $(COND_TOOLKIT_MOTIF___GUI_SRC_OBJECTS)
 COND_TOOLKIT_MSW___GUI_SRC_OBJECTS =  \
 	monodll_clrpickerg.o \
@@ -5907,6 +5914,7 @@ COND_TOOLKIT_MSW___GUI_SRC_OBJECTS =  \
 	monodll_msw_tglbtn.o \
 	monodll_treectrl.o \
 	monodll_systhemectrl.o \
+	monodll_collheaderctrlg.o \
 	monodll_msw_checklst.o \
 	monodll_msw_fdrepdlg.o \
 	monodll_msw_fontdlg.o
@@ -6068,6 +6076,7 @@ COND_TOOLKIT_WINCE___GUI_SRC_OBJECTS =  \
 	monodll_msw_tglbtn.o \
 	monodll_treectrl.o \
 	monodll_systhemectrl.o \
+	monodll_collheaderctrlg.o \
 	monodll_dirdlgg.o \
 	monodll_generic_fdrepdlg.o \
 	monodll_filedlgg.o \
@@ -7326,6 +7335,7 @@ COND_USE_GUI_1_WXUNIV_1___CORE_SRC_OBJECTS_1 =  \
 	monolib_univ_toolbar.o \
 	monolib_topluniv.o \
 	monolib_winuniv.o \
+	monolib_collheaderctrlg.o \
 	monolib_gtk.o \
 	monolib_metal.o \
 	monolib_mono.o \
@@ -7994,7 +8004,8 @@ COND_TOOLKIT_COCOA___GUI_SRC_OBJECTS_1 =  \
 	monolib_paletteg.o \
 	monolib_regiong.o \
 	monolib_generic_statusbr.o \
-	monolib_generic_textmeasure.o
+	monolib_generic_textmeasure.o \
+	monolib_collheaderctrlg.o
 @COND_TOOLKIT_COCOA@__GUI_SRC_OBJECTS_1 = $(COND_TOOLKIT_COCOA___GUI_SRC_OBJECTS_1)
 COND_TOOLKIT_GTK_TOOLKIT_VERSION____GUI_SRC_OBJECTS_1 =  \
 	monolib_generic_accel.o \
@@ -8040,7 +8051,8 @@ COND_TOOLKIT_GTK_TOOLKIT_VERSION____GUI_SRC_OBJECTS_1 =  \
 	monolib_gtk1_stattext.o \
 	monolib_gtk1_toolbar.o \
 	monolib_gtk1_textctrl.o \
-	monolib_gtk1_tglbtn.o
+	monolib_gtk1_tglbtn.o \
+	monolib_collheaderctrlg.o
 @COND_TOOLKIT_GTK_TOOLKIT_VERSION_@__GUI_SRC_OBJECTS_1 = $(COND_TOOLKIT_GTK_TOOLKIT_VERSION____GUI_SRC_OBJECTS_1)
 COND_TOOLKIT_GTK_TOOLKIT_VERSION_2___GUI_SRC_OBJECTS_1 =  \
 	monolib_generic_accel.o \
@@ -8218,7 +8230,8 @@ COND_TOOLKIT_MOTIF___GUI_SRC_OBJECTS_1 =  \
 	monolib_prntdlgg.o \
 	monolib_generic_statline.o \
 	monolib_generic_statusbr.o \
-	monolib_tabg.o
+	monolib_tabg.o \
+	monolib_collheaderctrlg.o
 @COND_TOOLKIT_MOTIF@__GUI_SRC_OBJECTS_1 = $(COND_TOOLKIT_MOTIF___GUI_SRC_OBJECTS_1)
 COND_TOOLKIT_MSW___GUI_SRC_OBJECTS_1 =  \
 	monolib_clrpickerg.o \
@@ -8281,6 +8294,7 @@ COND_TOOLKIT_MSW___GUI_SRC_OBJECTS_1 =  \
 	monolib_msw_tglbtn.o \
 	monolib_treectrl.o \
 	monolib_systhemectrl.o \
+	monolib_collheaderctrlg.o \
 	monolib_msw_checklst.o \
 	monolib_msw_fdrepdlg.o \
 	monolib_msw_fontdlg.o
@@ -8442,6 +8456,7 @@ COND_TOOLKIT_WINCE___GUI_SRC_OBJECTS_1 =  \
 	monolib_msw_tglbtn.o \
 	monolib_treectrl.o \
 	monolib_systhemectrl.o \
+	monolib_collheaderctrlg.o \
 	monolib_dirdlgg.o \
 	monolib_generic_fdrepdlg.o \
 	monolib_filedlgg.o \
@@ -9852,6 +9867,7 @@ COND_USE_GUI_1_WXUNIV_1___CORE_SRC_OBJECTS_2 =  \
 	coredll_univ_toolbar.o \
 	coredll_topluniv.o \
 	coredll_winuniv.o \
+	coredll_collheaderctrlg.o \
 	coredll_gtk.o \
 	coredll_metal.o \
 	coredll_mono.o \
@@ -10520,7 +10536,8 @@ COND_TOOLKIT_COCOA___GUI_SRC_OBJECTS_2 =  \
 	coredll_paletteg.o \
 	coredll_regiong.o \
 	coredll_generic_statusbr.o \
-	coredll_generic_textmeasure.o
+	coredll_generic_textmeasure.o \
+	coredll_collheaderctrlg.o
 @COND_TOOLKIT_COCOA@__GUI_SRC_OBJECTS_2 = $(COND_TOOLKIT_COCOA___GUI_SRC_OBJECTS_2)
 COND_TOOLKIT_GTK_TOOLKIT_VERSION____GUI_SRC_OBJECTS_2 =  \
 	coredll_generic_accel.o \
@@ -10566,7 +10583,8 @@ COND_TOOLKIT_GTK_TOOLKIT_VERSION____GUI_SRC_OBJECTS_2 =  \
 	coredll_gtk1_stattext.o \
 	coredll_gtk1_toolbar.o \
 	coredll_gtk1_textctrl.o \
-	coredll_gtk1_tglbtn.o
+	coredll_gtk1_tglbtn.o \
+	coredll_collheaderctrlg.o
 @COND_TOOLKIT_GTK_TOOLKIT_VERSION_@__GUI_SRC_OBJECTS_2 = $(COND_TOOLKIT_GTK_TOOLKIT_VERSION____GUI_SRC_OBJECTS_2)
 COND_TOOLKIT_GTK_TOOLKIT_VERSION_2___GUI_SRC_OBJECTS_2 =  \
 	coredll_generic_accel.o \
@@ -10744,7 +10762,8 @@ COND_TOOLKIT_MOTIF___GUI_SRC_OBJECTS_2 =  \
 	coredll_prntdlgg.o \
 	coredll_generic_statline.o \
 	coredll_generic_statusbr.o \
-	coredll_tabg.o
+	coredll_tabg.o \
+	coredll_collheaderctrlg.o
 @COND_TOOLKIT_MOTIF@__GUI_SRC_OBJECTS_2 = $(COND_TOOLKIT_MOTIF___GUI_SRC_OBJECTS_2)
 COND_TOOLKIT_MSW___GUI_SRC_OBJECTS_2 =  \
 	coredll_clrpickerg.o \
@@ -10807,6 +10826,7 @@ COND_TOOLKIT_MSW___GUI_SRC_OBJECTS_2 =  \
 	coredll_msw_tglbtn.o \
 	coredll_treectrl.o \
 	coredll_systhemectrl.o \
+	coredll_collheaderctrlg.o \
 	coredll_msw_checklst.o \
 	coredll_msw_fdrepdlg.o \
 	coredll_msw_fontdlg.o
@@ -10968,6 +10988,7 @@ COND_TOOLKIT_WINCE___GUI_SRC_OBJECTS_2 =  \
 	coredll_msw_tglbtn.o \
 	coredll_treectrl.o \
 	coredll_systhemectrl.o \
+	coredll_collheaderctrlg.o \
 	coredll_dirdlgg.o \
 	coredll_generic_fdrepdlg.o \
 	coredll_filedlgg.o \
@@ -11633,6 +11654,7 @@ COND_USE_GUI_1_WXUNIV_1___CORE_SRC_OBJECTS_3 =  \
 	corelib_univ_toolbar.o \
 	corelib_topluniv.o \
 	corelib_winuniv.o \
+	corelib_collheaderctrlg.o \
 	corelib_gtk.o \
 	corelib_metal.o \
 	corelib_mono.o \
@@ -12301,7 +12323,8 @@ COND_TOOLKIT_COCOA___GUI_SRC_OBJECTS_3 =  \
 	corelib_paletteg.o \
 	corelib_regiong.o \
 	corelib_generic_statusbr.o \
-	corelib_generic_textmeasure.o
+	corelib_generic_textmeasure.o \
+	corelib_collheaderctrlg.o
 @COND_TOOLKIT_COCOA@__GUI_SRC_OBJECTS_3 = $(COND_TOOLKIT_COCOA___GUI_SRC_OBJECTS_3)
 COND_TOOLKIT_GTK_TOOLKIT_VERSION____GUI_SRC_OBJECTS_3 =  \
 	corelib_generic_accel.o \
@@ -12347,7 +12370,8 @@ COND_TOOLKIT_GTK_TOOLKIT_VERSION____GUI_SRC_OBJECTS_3 =  \
 	corelib_gtk1_stattext.o \
 	corelib_gtk1_toolbar.o \
 	corelib_gtk1_textctrl.o \
-	corelib_gtk1_tglbtn.o
+	corelib_gtk1_tglbtn.o \
+	corelib_collheaderctrlg.o
 @COND_TOOLKIT_GTK_TOOLKIT_VERSION_@__GUI_SRC_OBJECTS_3 = $(COND_TOOLKIT_GTK_TOOLKIT_VERSION____GUI_SRC_OBJECTS_3)
 COND_TOOLKIT_GTK_TOOLKIT_VERSION_2___GUI_SRC_OBJECTS_3 =  \
 	corelib_generic_accel.o \
@@ -12525,7 +12549,8 @@ COND_TOOLKIT_MOTIF___GUI_SRC_OBJECTS_3 =  \
 	corelib_prntdlgg.o \
 	corelib_generic_statline.o \
 	corelib_generic_statusbr.o \
-	corelib_tabg.o
+	corelib_tabg.o \
+	corelib_collheaderctrlg.o
 @COND_TOOLKIT_MOTIF@__GUI_SRC_OBJECTS_3 = $(COND_TOOLKIT_MOTIF___GUI_SRC_OBJECTS_3)
 COND_TOOLKIT_MSW___GUI_SRC_OBJECTS_3 =  \
 	corelib_clrpickerg.o \
@@ -12588,6 +12613,7 @@ COND_TOOLKIT_MSW___GUI_SRC_OBJECTS_3 =  \
 	corelib_msw_tglbtn.o \
 	corelib_treectrl.o \
 	corelib_systhemectrl.o \
+	corelib_collheaderctrlg.o \
 	corelib_msw_checklst.o \
 	corelib_msw_fdrepdlg.o \
 	corelib_msw_fontdlg.o
@@ -12749,6 +12775,7 @@ COND_TOOLKIT_WINCE___GUI_SRC_OBJECTS_3 =  \
 	corelib_msw_tglbtn.o \
 	corelib_treectrl.o \
 	corelib_systhemectrl.o \
+	corelib_collheaderctrlg.o \
 	corelib_dirdlgg.o \
 	corelib_generic_fdrepdlg.o \
 	corelib_filedlgg.o \
@@ -15108,6 +15135,7 @@ COND_PLATFORM_MACOSX_1___OSX_CARBON_COCOA_SRC_OBJECTS =  \
 	monodll_utilscocoa.o \
 	monodll_generic_caret.o \
 	monodll_clrpickerg.o \
+	monodll_collheaderctrlg.o \
 	monodll_collpaneg.o \
 	monodll_colrdlgg.o \
 	monodll_dirdlgg.o \
@@ -15254,6 +15282,7 @@ COND_PLATFORM_MACOSX_1___OSX_CARBON_COCOA_SRC_OBJECTS_12 =  \
 	monolib_utilscocoa.o \
 	monolib_generic_caret.o \
 	monolib_clrpickerg.o \
+	monolib_collheaderctrlg.o \
 	monolib_collpaneg.o \
 	monolib_colrdlgg.o \
 	monolib_dirdlgg.o \
@@ -15400,6 +15429,7 @@ COND_PLATFORM_MACOSX_1___OSX_CARBON_COCOA_SRC_OBJECTS_14 =  \
 	coredll_utilscocoa.o \
 	coredll_generic_caret.o \
 	coredll_clrpickerg.o \
+	coredll_collheaderctrlg.o \
 	coredll_collpaneg.o \
 	coredll_colrdlgg.o \
 	coredll_dirdlgg.o \
@@ -15531,6 +15561,7 @@ COND_PLATFORM_MACOSX_1___OSX_CARBON_COCOA_SRC_OBJECTS_1_0 =  \
 	corelib_utilscocoa.o \
 	corelib_generic_caret.o \
 	corelib_clrpickerg.o \
+	corelib_collheaderctrlg.o \
 	corelib_collpaneg.o \
 	corelib_colrdlgg.o \
 	corelib_dirdlgg.o \
@@ -21461,6 +21492,33 @@ monodll_sound_sdl.o: $(srcdir)/src/unix/sound_sdl.cpp $(MONODLL_ODEP)
 @COND_USE_GUI_1_WXUNIV_1@monodll_filedlgg.o: $(srcdir)/src/generic/filedlgg.cpp $(MONODLL_ODEP)
 @COND_USE_GUI_1_WXUNIV_1@	$(CXXC) -c -o $@ $(MONODLL_CXXFLAGS) $(srcdir)/src/generic/filedlgg.cpp
 
+@COND_TOOLKIT_GTK_TOOLKIT_VERSION__USE_GUI_1_WXUNIV_0@monodll_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(MONODLL_ODEP)
+@COND_TOOLKIT_GTK_TOOLKIT_VERSION__USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(MONODLL_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_TOOLKIT_MOTIF_USE_GUI_1_WXUNIV_0@monodll_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(MONODLL_ODEP)
+@COND_TOOLKIT_MOTIF_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(MONODLL_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_TOOLKIT_MSW_USE_GUI_1_WXUNIV_0@monodll_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(MONODLL_ODEP)
+@COND_TOOLKIT_MSW_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(MONODLL_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_TOOLKIT_WINCE_USE_GUI_1_WXUNIV_0@monodll_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(MONODLL_ODEP)
+@COND_TOOLKIT_WINCE_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(MONODLL_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_CARBON_USE_GUI_1_WXUNIV_0@monodll_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(MONODLL_ODEP)
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_CARBON_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(MONODLL_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_COCOA_USE_GUI_1_WXUNIV_0@monodll_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(MONODLL_ODEP)
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_COCOA_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(MONODLL_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_IPHONE_USE_GUI_1_WXUNIV_0@monodll_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(MONODLL_ODEP)
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_IPHONE_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(MONODLL_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_TOOLKIT_COCOA_USE_GUI_1_WXUNIV_0@monodll_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(MONODLL_ODEP)
+@COND_TOOLKIT_COCOA_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(MONODLL_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_USE_GUI_1_WXUNIV_1@monodll_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(MONODLL_ODEP)
+@COND_USE_GUI_1_WXUNIV_1@	$(CXXC) -c -o $@ $(MONODLL_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
 @COND_TOOLKIT_MOTIF_USE_GUI_1_WXUNIV_0@monodll_mdig.o: $(srcdir)/src/generic/mdig.cpp $(MONODLL_ODEP)
 @COND_TOOLKIT_MOTIF_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(MONODLL_CXXFLAGS) $(srcdir)/src/generic/mdig.cpp
 
@@ -27386,6 +27444,33 @@ monolib_sound_sdl.o: $(srcdir)/src/unix/sound_sdl.cpp $(MONOLIB_ODEP)
 @COND_USE_GUI_1_WXUNIV_1@monolib_filedlgg.o: $(srcdir)/src/generic/filedlgg.cpp $(MONOLIB_ODEP)
 @COND_USE_GUI_1_WXUNIV_1@	$(CXXC) -c -o $@ $(MONOLIB_CXXFLAGS) $(srcdir)/src/generic/filedlgg.cpp
 
+@COND_TOOLKIT_GTK_TOOLKIT_VERSION__USE_GUI_1_WXUNIV_0@monolib_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(MONOLIB_ODEP)
+@COND_TOOLKIT_GTK_TOOLKIT_VERSION__USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(MONOLIB_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_TOOLKIT_MOTIF_USE_GUI_1_WXUNIV_0@monolib_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(MONOLIB_ODEP)
+@COND_TOOLKIT_MOTIF_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(MONOLIB_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_TOOLKIT_MSW_USE_GUI_1_WXUNIV_0@monolib_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(MONOLIB_ODEP)
+@COND_TOOLKIT_MSW_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(MONOLIB_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_TOOLKIT_WINCE_USE_GUI_1_WXUNIV_0@monolib_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(MONOLIB_ODEP)
+@COND_TOOLKIT_WINCE_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(MONOLIB_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_CARBON_USE_GUI_1_WXUNIV_0@monolib_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(MONOLIB_ODEP)
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_CARBON_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(MONOLIB_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_COCOA_USE_GUI_1_WXUNIV_0@monolib_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(MONOLIB_ODEP)
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_COCOA_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(MONOLIB_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_IPHONE_USE_GUI_1_WXUNIV_0@monolib_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(MONOLIB_ODEP)
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_IPHONE_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(MONOLIB_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_TOOLKIT_COCOA_USE_GUI_1_WXUNIV_0@monolib_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(MONOLIB_ODEP)
+@COND_TOOLKIT_COCOA_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(MONOLIB_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_USE_GUI_1_WXUNIV_1@monolib_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(MONOLIB_ODEP)
+@COND_USE_GUI_1_WXUNIV_1@	$(CXXC) -c -o $@ $(MONOLIB_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
 @COND_TOOLKIT_MOTIF_USE_GUI_1_WXUNIV_0@monolib_mdig.o: $(srcdir)/src/generic/mdig.cpp $(MONOLIB_ODEP)
 @COND_TOOLKIT_MOTIF_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(MONOLIB_CXXFLAGS) $(srcdir)/src/generic/mdig.cpp
 
@@ -33416,6 +33501,33 @@ coredll_win32.o: $(srcdir)/src/univ/themes/win32.cpp $(COREDLL_ODEP)
 @COND_USE_GUI_1_WXUNIV_1@coredll_filedlgg.o: $(srcdir)/src/generic/filedlgg.cpp $(COREDLL_ODEP)
 @COND_USE_GUI_1_WXUNIV_1@	$(CXXC) -c -o $@ $(COREDLL_CXXFLAGS) $(srcdir)/src/generic/filedlgg.cpp
 
+@COND_TOOLKIT_GTK_TOOLKIT_VERSION__USE_GUI_1_WXUNIV_0@coredll_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(COREDLL_ODEP)
+@COND_TOOLKIT_GTK_TOOLKIT_VERSION__USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(COREDLL_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_TOOLKIT_MOTIF_USE_GUI_1_WXUNIV_0@coredll_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(COREDLL_ODEP)
+@COND_TOOLKIT_MOTIF_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(COREDLL_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_TOOLKIT_MSW_USE_GUI_1_WXUNIV_0@coredll_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(COREDLL_ODEP)
+@COND_TOOLKIT_MSW_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(COREDLL_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_TOOLKIT_WINCE_USE_GUI_1_WXUNIV_0@coredll_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(COREDLL_ODEP)
+@COND_TOOLKIT_WINCE_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(COREDLL_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_CARBON_USE_GUI_1_WXUNIV_0@coredll_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(COREDLL_ODEP)
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_CARBON_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(COREDLL_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_COCOA_USE_GUI_1_WXUNIV_0@coredll_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(COREDLL_ODEP)
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_COCOA_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(COREDLL_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_IPHONE_USE_GUI_1_WXUNIV_0@coredll_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(COREDLL_ODEP)
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_IPHONE_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(COREDLL_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_TOOLKIT_COCOA_USE_GUI_1_WXUNIV_0@coredll_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(COREDLL_ODEP)
+@COND_TOOLKIT_COCOA_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(COREDLL_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_USE_GUI_1_WXUNIV_1@coredll_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(COREDLL_ODEP)
+@COND_USE_GUI_1_WXUNIV_1@	$(CXXC) -c -o $@ $(COREDLL_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
 @COND_TOOLKIT_MOTIF_USE_GUI_1_WXUNIV_0@coredll_mdig.o: $(srcdir)/src/generic/mdig.cpp $(COREDLL_ODEP)
 @COND_TOOLKIT_MOTIF_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(COREDLL_CXXFLAGS) $(srcdir)/src/generic/mdig.cpp
 
@@ -37826,6 +37938,33 @@ corelib_win32.o: $(srcdir)/src/univ/themes/win32.cpp $(CORELIB_ODEP)
 @COND_USE_GUI_1_WXUNIV_1@corelib_filedlgg.o: $(srcdir)/src/generic/filedlgg.cpp $(CORELIB_ODEP)
 @COND_USE_GUI_1_WXUNIV_1@	$(CXXC) -c -o $@ $(CORELIB_CXXFLAGS) $(srcdir)/src/generic/filedlgg.cpp
 
+@COND_TOOLKIT_GTK_TOOLKIT_VERSION__USE_GUI_1_WXUNIV_0@corelib_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(CORELIB_ODEP)
+@COND_TOOLKIT_GTK_TOOLKIT_VERSION__USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(CORELIB_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_TOOLKIT_MOTIF_USE_GUI_1_WXUNIV_0@corelib_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(CORELIB_ODEP)
+@COND_TOOLKIT_MOTIF_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(CORELIB_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_TOOLKIT_MSW_USE_GUI_1_WXUNIV_0@corelib_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(CORELIB_ODEP)
+@COND_TOOLKIT_MSW_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(CORELIB_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_TOOLKIT_WINCE_USE_GUI_1_WXUNIV_0@corelib_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(CORELIB_ODEP)
+@COND_TOOLKIT_WINCE_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(CORELIB_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_CARBON_USE_GUI_1_WXUNIV_0@corelib_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(CORELIB_ODEP)
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_CARBON_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(CORELIB_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_COCOA_USE_GUI_1_WXUNIV_0@corelib_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(CORELIB_ODEP)
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_COCOA_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(CORELIB_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_IPHONE_USE_GUI_1_WXUNIV_0@corelib_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(CORELIB_ODEP)
+@COND_PLATFORM_MACOSX_1_TOOLKIT_OSX_IPHONE_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(CORELIB_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_TOOLKIT_COCOA_USE_GUI_1_WXUNIV_0@corelib_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(CORELIB_ODEP)
+@COND_TOOLKIT_COCOA_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(CORELIB_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
+@COND_USE_GUI_1_WXUNIV_1@corelib_collheaderctrlg.o: $(srcdir)/src/generic/collheaderctrlg.cpp $(CORELIB_ODEP)
+@COND_USE_GUI_1_WXUNIV_1@	$(CXXC) -c -o $@ $(CORELIB_CXXFLAGS) $(srcdir)/src/generic/collheaderctrlg.cpp
+
 @COND_TOOLKIT_MOTIF_USE_GUI_1_WXUNIV_0@corelib_mdig.o: $(srcdir)/src/generic/mdig.cpp $(CORELIB_ODEP)
 @COND_TOOLKIT_MOTIF_USE_GUI_1_WXUNIV_0@	$(CXXC) -c -o $@ $(CORELIB_CXXFLAGS) $(srcdir)/src/generic/mdig.cpp
 

build/bakefiles/files.bkl

@@ -1194,6 +1194,7 @@ IMPORTANT: please read docs/tech/tn0016.txt before modifying this file!
     wx/xpmhand.h
     wx/xrc/xmlreshandler.h
     wx/systhemectrl.h
+    wx/collheaderctrl.h
 </set>
 
 <!-- ====================================================================== -->
@@ -1568,6 +1569,7 @@ IMPORTANT: please read docs/tech/tn0016.txt before modifying this file!
     src/gtk1/toolbar.cpp
     src/gtk1/textctrl.cpp
     src/gtk1/tglbtn.cpp
+    src/generic/collheaderctrlg.cpp
 </set>
 <set var="GTK1_HDR" hints="files">
     wx/generic/clrpickerg.h
@@ -1709,6 +1711,7 @@ IMPORTANT: please read docs/tech/tn0016.txt before modifying this file!
     src/generic/statline.cpp
     src/generic/statusbr.cpp
     src/generic/tabg.cpp
+    src/generic/collheaderctrlg.cpp
 </set>
 <set var="MOTIF_HDR" hints="files">
     wx/generic/clrpickerg.h
@@ -1994,6 +1997,7 @@ IMPORTANT: please read docs/tech/tn0016.txt before modifying this file!
     src/msw/tglbtn.cpp
     src/msw/treectrl.cpp
     src/msw/systhemectrl.cpp
+    src/generic/collheaderctrlg.cpp
 </set>
 <set var="MSW_HDR" hints="files">
     wx/generic/clrpickerg.h
@@ -2091,6 +2095,7 @@ IMPORTANT: please read docs/tech/tn0016.txt before modifying this file!
     wx/msw/toplevel.h
     wx/msw/treectrl.h
     wx/msw/window.h
+    wx/generic/collheaderctrl.h
 </set>
 <set var="MSW_RSC" hints="files">
     <!-- Resources must be installed together with headers: -->
@@ -2338,6 +2343,7 @@ IMPORTANT: please read docs/tech/tn0016.txt before modifying this file!
     <!-- Generic implementations used by wxOSX: -->
     src/generic/caret.cpp
     src/generic/clrpickerg.cpp
+    src/generic/collheaderctrlg.cpp
     src/generic/collpaneg.cpp
     src/generic/colrdlgg.cpp
     src/generic/dirdlgg.cpp
@@ -2696,6 +2702,7 @@ IMPORTANT: please read docs/tech/tn0016.txt before modifying this file!
     src/generic/regiong.cpp
     src/generic/statusbr.cpp
     src/generic/textmeasure.cpp
+    src/generic/collheaderctrlg.cpp
 </set>
 <set var="COCOA_HDR" hints="files">
     wx/cocoa/NSApplication.h
@@ -2862,6 +2869,7 @@ IMPORTANT: please read docs/tech/tn0016.txt before modifying this file!
     src/univ/toolbar.cpp
     src/univ/topluniv.cpp
     src/univ/winuniv.cpp
+    src/generic/collheaderctrlg.cpp
 </set>
 <set var="UNIV_HDR" hints="files">
     $(UNIV_PLATFORM_HDR)

build/files

@@ -668,6 +668,7 @@ GUI_CMN_HDR =
     wx/choicdlg.h
     wx/choice.h
     wx/cmndata.h
+    wx/collheaderctrl.h
     wx/collpane.h
     wx/combo.h
     wx/combobox.h
@@ -1188,6 +1189,7 @@ GTK1_SRC =
     # Generic implementations used by wxGTK1:
     src/generic/accel.cpp
     src/generic/clrpickerg.cpp
+    src/generic/collheaderctrlg.cpp
     src/generic/collpaneg.cpp
     src/generic/colrdlgg.cpp
     src/generic/dirdlgg.cpp
@@ -1352,6 +1354,7 @@ MOTIF_SRC =
     src/motif/xmcombo/xmcombo.c
     # Generic files used by wxMotif:
     src/generic/clrpickerg.cpp
+    src/generic/collheaderctrlg.cpp
     src/generic/collpaneg.cpp
     src/generic/colrdlgg.cpp
     src/generic/dirdlgg.cpp
@@ -1579,6 +1582,7 @@ MSW_DESKTOP_LOWLEVEL_HDR =
 
 MSW_SRC =
     src/generic/clrpickerg.cpp
+    src/generic/collheaderctrlg.cpp
     src/generic/collpaneg.cpp
     src/generic/filepickerg.cpp
     src/generic/fontpickerg.cpp
@@ -1640,6 +1644,7 @@ MSW_SRC =
     src/msw/treectrl.cpp
 MSW_HDR =
     wx/generic/clrpickerg.h
+    wx/generic/collheaderctrl.h
     wx/generic/collpaneg.h
     wx/generic/filepickerg.h
     wx/generic/fontpickerg.h
@@ -1965,6 +1970,7 @@ OSX_CARBON_COCOA_SRC =
     # Generic implementations used by wxOSX:
     src/generic/caret.cpp
     src/generic/clrpickerg.cpp
+    src/generic/collheaderctrlg.cpp
     src/generic/collpaneg.cpp
     src/generic/colrdlgg.cpp
     src/generic/dirdlgg.cpp
@@ -2293,6 +2299,7 @@ COCOA_SRC =
     src/generic/accel.cpp
     src/generic/caret.cpp
     src/generic/clrpickerg.cpp
+    src/generic/collheaderctrlg.cpp
     src/generic/collpaneg.cpp
     src/generic/colrdlgg.cpp
     src/generic/fdrepdlg.cpp
@@ -2407,6 +2414,7 @@ UNIV_SRC =
     $(UNIV_PLATFORM_SRC)
     src/generic/accel.cpp
     src/generic/clrpickerg.cpp
+    src/generic/collheaderctrlg.cpp
     src/generic/collpaneg.cpp
     src/generic/colrdlgg.cpp
     src/generic/dirdlgg.cpp

build/msw/makefile.bcc

@@ -1885,6 +1885,7 @@ ____CORE_SRC_FILENAMES_OBJECTS =  \
 	$(OBJS)\monodll_msw_tglbtn.obj \
 	$(OBJS)\monodll_treectrl.obj \
 	$(OBJS)\monodll_systhemectrl.obj \
+	$(OBJS)\monodll_collheaderctrlg.obj \
 	$(OBJS)\monodll_msw_checklst.obj \
 	$(OBJS)\monodll_msw_fdrepdlg.obj \
 	$(OBJS)\monodll_fontdlg.obj \
@@ -2161,6 +2162,7 @@ ____CORE_SRC_FILENAMES_OBJECTS =  \
 	$(OBJS)\monodll_univ_toolbar.obj \
 	$(OBJS)\monodll_topluniv.obj \
 	$(OBJS)\monodll_winuniv.obj \
+	$(OBJS)\monodll_collheaderctrlg.obj \
 	$(OBJS)\monodll_gtk.obj \
 	$(OBJS)\monodll_metal.obj \
 	$(OBJS)\monodll_mono.obj \
@@ -2704,6 +2706,7 @@ ____CORE_SRC_FILENAMES_1_OBJECTS =  \
 	$(OBJS)\monolib_msw_tglbtn.obj \
 	$(OBJS)\monolib_treectrl.obj \
 	$(OBJS)\monolib_systhemectrl.obj \
+	$(OBJS)\monolib_collheaderctrlg.obj \
 	$(OBJS)\monolib_msw_checklst.obj \
 	$(OBJS)\monolib_msw_fdrepdlg.obj \
 	$(OBJS)\monolib_fontdlg.obj \
@@ -2980,6 +2983,7 @@ ____CORE_SRC_FILENAMES_1_OBJECTS =  \
 	$(OBJS)\monolib_univ_toolbar.obj \
 	$(OBJS)\monolib_topluniv.obj \
 	$(OBJS)\monolib_winuniv.obj \
+	$(OBJS)\monolib_collheaderctrlg.obj \
 	$(OBJS)\monolib_gtk.obj \
 	$(OBJS)\monolib_metal.obj \
 	$(OBJS)\monolib_mono.obj \
@@ -3397,6 +3401,7 @@ ____CORE_SRC_FILENAMES_2_OBJECTS =  \
 	$(OBJS)\coredll_msw_tglbtn.obj \
 	$(OBJS)\coredll_treectrl.obj \
 	$(OBJS)\coredll_systhemectrl.obj \
+	$(OBJS)\coredll_collheaderctrlg.obj \
 	$(OBJS)\coredll_msw_checklst.obj \
 	$(OBJS)\coredll_msw_fdrepdlg.obj \
 	$(OBJS)\coredll_fontdlg.obj \
@@ -3673,6 +3678,7 @@ ____CORE_SRC_FILENAMES_2_OBJECTS =  \
 	$(OBJS)\coredll_univ_toolbar.obj \
 	$(OBJS)\coredll_topluniv.obj \
 	$(OBJS)\coredll_winuniv.obj \
+	$(OBJS)\coredll_collheaderctrlg.obj \
 	$(OBJS)\coredll_gtk.obj \
 	$(OBJS)\coredll_metal.obj \
 	$(OBJS)\coredll_mono.obj \
@@ -3963,6 +3969,7 @@ ____CORE_SRC_FILENAMES_3_OBJECTS =  \
 	$(OBJS)\corelib_msw_tglbtn.obj \
 	$(OBJS)\corelib_treectrl.obj \
 	$(OBJS)\corelib_systhemectrl.obj \
+	$(OBJS)\corelib_collheaderctrlg.obj \
 	$(OBJS)\corelib_msw_checklst.obj \
 	$(OBJS)\corelib_msw_fdrepdlg.obj \
 	$(OBJS)\corelib_fontdlg.obj \
@@ -4239,6 +4246,7 @@ ____CORE_SRC_FILENAMES_3_OBJECTS =  \
 	$(OBJS)\corelib_univ_toolbar.obj \
 	$(OBJS)\corelib_topluniv.obj \
 	$(OBJS)\corelib_winuniv.obj \
+	$(OBJS)\corelib_collheaderctrlg.obj \
 	$(OBJS)\corelib_gtk.obj \
 	$(OBJS)\corelib_metal.obj \
 	$(OBJS)\corelib_mono.obj \
@@ -7791,6 +7799,11 @@ $(OBJS)\monodll_evtloop.obj: ..\..\src\msw\evtloop.cpp
 	$(CXX) -q -c -P -o$@ $(MONODLL_CXXFLAGS) ..\..\src\msw\evtloop.cpp
 !endif
 
+!if "$(USE_GUI)" == "1"
+$(OBJS)\monodll_collheaderctrlg.obj: ..\..\src\generic\collheaderctrlg.cpp
+	$(CXX) -q -c -P -o$@ $(MONODLL_CXXFLAGS) ..\..\src\generic\collheaderctrlg.cpp
+!endif
+
 !if "$(USE_GUI)" == "1"
 $(OBJS)\monodll_accelcmn.obj: ..\..\src\common\accelcmn.cpp
 	$(CXX) -q -c -P -o$@ $(MONODLL_CXXFLAGS) ..\..\src\common\accelcmn.cpp
@@ -10293,6 +10306,11 @@ $(OBJS)\monolib_evtloop.obj: ..\..\src\msw\evtloop.cpp
 	$(CXX) -q -c -P -o$@ $(MONOLIB_CXXFLAGS) ..\..\src\msw\evtloop.cpp
 !endif
 
+!if "$(USE_GUI)" == "1"
+$(OBJS)\monolib_collheaderctrlg.obj: ..\..\src\generic\collheaderctrlg.cpp
+	$(CXX) -q -c -P -o$@ $(MONOLIB_CXXFLAGS) ..\..\src\generic\collheaderctrlg.cpp
+!endif
+
 !if "$(USE_GUI)" == "1"
 $(OBJS)\monolib_accelcmn.obj: ..\..\src\common\accelcmn.cpp
 	$(CXX) -q -c -P -o$@ $(MONOLIB_CXXFLAGS) ..\..\src\common\accelcmn.cpp
@@ -12732,6 +12750,11 @@ $(OBJS)\coredll_evtloop.obj: ..\..\src\msw\evtloop.cpp
 	$(CXX) -q -c -P -o$@ $(COREDLL_CXXFLAGS) ..\..\src\msw\evtloop.cpp
 !endif
 
+!if "$(USE_GUI)" == "1"
+$(OBJS)\coredll_collheaderctrlg.obj: ..\..\src\generic\collheaderctrlg.cpp
+	$(CXX) -q -c -P -o$@ $(COREDLL_CXXFLAGS) ..\..\src\generic\collheaderctrlg.cpp
+!endif
+
 !if "$(USE_GUI)" == "1"
 $(OBJS)\coredll_accelcmn.obj: ..\..\src\common\accelcmn.cpp
 	$(CXX) -q -c -P -o$@ $(COREDLL_CXXFLAGS) ..\..\src\common\accelcmn.cpp
@@ -14196,6 +14219,11 @@ $(OBJS)\corelib_evtloop.obj: ..\..\src\msw\evtloop.cpp
 	$(CXX) -q -c -P -o$@ $(CORELIB_CXXFLAGS) ..\..\src\msw\evtloop.cpp
 !endif
 
+!if "$(USE_GUI)" == "1"
+$(OBJS)\corelib_collheaderctrlg.obj: ..\..\src\generic\collheaderctrlg.cpp
+	$(CXX) -q -c -P -o$@ $(CORELIB_CXXFLAGS) ..\..\src\generic\collheaderctrlg.cpp
+!endif
+
 !if "$(USE_GUI)" == "1"
 $(OBJS)\corelib_accelcmn.obj: ..\..\src\common\accelcmn.cpp
 	$(CXX) -q -c -P -o$@ $(CORELIB_CXXFLAGS) ..\..\src\common\accelcmn.cpp

build/msw/makefile.gcc

@@ -1904,6 +1904,7 @@ ____CORE_SRC_FILENAMES_OBJECTS =  \
 	$(OBJS)\monodll_msw_tglbtn.o \
 	$(OBJS)\monodll_treectrl.o \
 	$(OBJS)\monodll_systhemectrl.o \
+	$(OBJS)\monodll_collheaderctrlg.o \
 	$(OBJS)\monodll_msw_checklst.o \
 	$(OBJS)\monodll_msw_fdrepdlg.o \
 	$(OBJS)\monodll_fontdlg.o \
@@ -2182,6 +2183,7 @@ ____CORE_SRC_FILENAMES_OBJECTS =  \
 	$(OBJS)\monodll_univ_toolbar.o \
 	$(OBJS)\monodll_topluniv.o \
 	$(OBJS)\monodll_winuniv.o \
+	$(OBJS)\monodll_collheaderctrlg.o \
 	$(OBJS)\monodll_gtk.o \
 	$(OBJS)\monodll_metal.o \
 	$(OBJS)\monodll_mono.o \
@@ -2729,6 +2731,7 @@ ____CORE_SRC_FILENAMES_1_OBJECTS =  \
 	$(OBJS)\monolib_msw_tglbtn.o \
 	$(OBJS)\monolib_treectrl.o \
 	$(OBJS)\monolib_systhemectrl.o \
+	$(OBJS)\monolib_collheaderctrlg.o \
 	$(OBJS)\monolib_msw_checklst.o \
 	$(OBJS)\monolib_msw_fdrepdlg.o \
 	$(OBJS)\monolib_fontdlg.o \
@@ -3007,6 +3010,7 @@ ____CORE_SRC_FILENAMES_1_OBJECTS =  \
 	$(OBJS)\monolib_univ_toolbar.o \
 	$(OBJS)\monolib_topluniv.o \
 	$(OBJS)\monolib_winuniv.o \
+	$(OBJS)\monolib_collheaderctrlg.o \
 	$(OBJS)\monolib_gtk.o \
 	$(OBJS)\monolib_metal.o \
 	$(OBJS)\monolib_mono.o \
@@ -3438,6 +3442,7 @@ ____CORE_SRC_FILENAMES_2_OBJECTS =  \
 	$(OBJS)\coredll_msw_tglbtn.o \
 	$(OBJS)\coredll_treectrl.o \
 	$(OBJS)\coredll_systhemectrl.o \
+	$(OBJS)\coredll_collheaderctrlg.o \
 	$(OBJS)\coredll_msw_checklst.o \
 	$(OBJS)\coredll_msw_fdrepdlg.o \
 	$(OBJS)\coredll_fontdlg.o \
@@ -3716,6 +3721,7 @@ ____CORE_SRC_FILENAMES_2_OBJECTS =  \
 	$(OBJS)\coredll_univ_toolbar.o \
 	$(OBJS)\coredll_topluniv.o \
 	$(OBJS)\coredll_winuniv.o \
+	$(OBJS)\coredll_collheaderctrlg.o \
 	$(OBJS)\coredll_gtk.o \
 	$(OBJS)\coredll_metal.o \
 	$(OBJS)\coredll_mono.o \
@@ -4012,6 +4018,7 @@ ____CORE_SRC_FILENAMES_3_OBJECTS =  \
 	$(OBJS)\corelib_msw_tglbtn.o \
 	$(OBJS)\corelib_treectrl.o \
 	$(OBJS)\corelib_systhemectrl.o \
+	$(OBJS)\corelib_collheaderctrlg.o \
 	$(OBJS)\corelib_msw_checklst.o \
 	$(OBJS)\corelib_msw_fdrepdlg.o \
 	$(OBJS)\corelib_fontdlg.o \
@@ -4290,6 +4297,7 @@ ____CORE_SRC_FILENAMES_3_OBJECTS =  \
 	$(OBJS)\corelib_univ_toolbar.o \
 	$(OBJS)\corelib_topluniv.o \
 	$(OBJS)\corelib_winuniv.o \
+	$(OBJS)\corelib_collheaderctrlg.o \
 	$(OBJS)\corelib_gtk.o \
 	$(OBJS)\corelib_metal.o \
 	$(OBJS)\corelib_mono.o \
@@ -7966,6 +7974,11 @@ $(OBJS)\monodll_evtloop.o: ../../src/msw/evtloop.cpp
 	$(CXX) -c -o $@ $(MONODLL_CXXFLAGS) $(CPPDEPS) $<
 endif
 
+ifeq ($(USE_GUI),1)
+$(OBJS)\monodll_collheaderctrlg.o: ../../src/generic/collheaderctrlg.cpp
+	$(CXX) -c -o $@ $(MONODLL_CXXFLAGS) $(CPPDEPS) $<
+endif
+
 ifeq ($(USE_GUI),1)
 $(OBJS)\monodll_accelcmn.o: ../../src/common/accelcmn.cpp
 	$(CXX) -c -o $@ $(MONODLL_CXXFLAGS) $(CPPDEPS) $<
@@ -10468,6 +10481,11 @@ $(OBJS)\monolib_evtloop.o: ../../src/msw/evtloop.cpp
 	$(CXX) -c -o $@ $(MONOLIB_CXXFLAGS) $(CPPDEPS) $<
 endif
 
+ifeq ($(USE_GUI),1)
+$(OBJS)\monolib_collheaderctrlg.o: ../../src/generic/collheaderctrlg.cpp
+	$(CXX) -c -o $@ $(MONOLIB_CXXFLAGS) $(CPPDEPS) $<
+endif
+
 ifeq ($(USE_GUI),1)
 $(OBJS)\monolib_accelcmn.o: ../../src/common/accelcmn.cpp
 	$(CXX) -c -o $@ $(MONOLIB_CXXFLAGS) $(CPPDEPS) $<
@@ -12907,6 +12925,11 @@ $(OBJS)\coredll_evtloop.o: ../../src/msw/evtloop.cpp
 	$(CXX) -c -o $@ $(COREDLL_CXXFLAGS) $(CPPDEPS) $<
 endif
 
+ifeq ($(USE_GUI),1)
+$(OBJS)\coredll_collheaderctrlg.o: ../../src/generic/collheaderctrlg.cpp
+	$(CXX) -c -o $@ $(COREDLL_CXXFLAGS) $(CPPDEPS) $<
+endif
+
 ifeq ($(USE_GUI),1)
 $(OBJS)\coredll_accelcmn.o: ../../src/common/accelcmn.cpp
 	$(CXX) -c -o $@ $(COREDLL_CXXFLAGS) $(CPPDEPS) $<
@@ -14371,6 +14394,11 @@ $(OBJS)\corelib_evtloop.o: ../../src/msw/evtloop.cpp
 	$(CXX) -c -o $@ $(CORELIB_CXXFLAGS) $(CPPDEPS) $<
 endif
 
+ifeq ($(USE_GUI),1)
+$(OBJS)\corelib_collheaderctrlg.o: ../../src/generic/collheaderctrlg.cpp
+	$(CXX) -c -o $@ $(CORELIB_CXXFLAGS) $(CPPDEPS) $<
+endif
+
 ifeq ($(USE_GUI),1)
 $(OBJS)\corelib_accelcmn.o: ../../src/common/accelcmn.cpp
 	$(CXX) -c -o $@ $(CORELIB_CXXFLAGS) $(CPPDEPS) $<

build/msw/makefile.vc

@@ -2185,6 +2185,7 @@ ____CORE_SRC_FILENAMES_OBJECTS =  \
 	$(OBJS)\monodll_msw_tglbtn.obj \
 	$(OBJS)\monodll_treectrl.obj \
 	$(OBJS)\monodll_systhemectrl.obj \
+	$(OBJS)\monodll_collheaderctrlg.obj \
 	$(OBJS)\monodll_msw_checklst.obj \
 	$(OBJS)\monodll_msw_fdrepdlg.obj \
 	$(OBJS)\monodll_fontdlg.obj \
@@ -2461,6 +2462,7 @@ ____CORE_SRC_FILENAMES_OBJECTS =  \
 	$(OBJS)\monodll_univ_toolbar.obj \
 	$(OBJS)\monodll_topluniv.obj \
 	$(OBJS)\monodll_winuniv.obj \
+	$(OBJS)\monodll_collheaderctrlg.obj \
 	$(OBJS)\monodll_gtk.obj \
 	$(OBJS)\monodll_metal.obj \
 	$(OBJS)\monodll_mono.obj \
@@ -3010,6 +3012,7 @@ ____CORE_SRC_FILENAMES_1_OBJECTS =  \
 	$(OBJS)\monolib_msw_tglbtn.obj \
 	$(OBJS)\monolib_treectrl.obj \
 	$(OBJS)\monolib_systhemectrl.obj \
+	$(OBJS)\monolib_collheaderctrlg.obj \
 	$(OBJS)\monolib_msw_checklst.obj \
 	$(OBJS)\monolib_msw_fdrepdlg.obj \
 	$(OBJS)\monolib_fontdlg.obj \
@@ -3286,6 +3289,7 @@ ____CORE_SRC_FILENAMES_1_OBJECTS =  \
 	$(OBJS)\monolib_univ_toolbar.obj \
 	$(OBJS)\monolib_topluniv.obj \
 	$(OBJS)\monolib_winuniv.obj \
+	$(OBJS)\monolib_collheaderctrlg.obj \
 	$(OBJS)\monolib_gtk.obj \
 	$(OBJS)\monolib_metal.obj \
 	$(OBJS)\monolib_mono.obj \
@@ -3769,6 +3773,7 @@ ____CORE_SRC_FILENAMES_2_OBJECTS =  \
 	$(OBJS)\coredll_msw_tglbtn.obj \
 	$(OBJS)\coredll_treectrl.obj \
 	$(OBJS)\coredll_systhemectrl.obj \
+	$(OBJS)\coredll_collheaderctrlg.obj \
 	$(OBJS)\coredll_msw_checklst.obj \
 	$(OBJS)\coredll_msw_fdrepdlg.obj \
 	$(OBJS)\coredll_fontdlg.obj \
@@ -4045,6 +4050,7 @@ ____CORE_SRC_FILENAMES_2_OBJECTS =  \
 	$(OBJS)\coredll_univ_toolbar.obj \
 	$(OBJS)\coredll_topluniv.obj \
 	$(OBJS)\coredll_winuniv.obj \
+	$(OBJS)\coredll_collheaderctrlg.obj \
 	$(OBJS)\coredll_gtk.obj \
 	$(OBJS)\coredll_metal.obj \
 	$(OBJS)\coredll_mono.obj \
@@ -4341,6 +4347,7 @@ ____CORE_SRC_FILENAMES_3_OBJECTS =  \
 	$(OBJS)\corelib_msw_tglbtn.obj \
 	$(OBJS)\corelib_treectrl.obj \
 	$(OBJS)\corelib_systhemectrl.obj \
+	$(OBJS)\corelib_collheaderctrlg.obj \
 	$(OBJS)\corelib_msw_checklst.obj \
 	$(OBJS)\corelib_msw_fdrepdlg.obj \
 	$(OBJS)\corelib_fontdlg.obj \
@@ -4617,6 +4624,7 @@ ____CORE_SRC_FILENAMES_3_OBJECTS =  \
 	$(OBJS)\corelib_univ_toolbar.obj \
 	$(OBJS)\corelib_topluniv.obj \
 	$(OBJS)\corelib_winuniv.obj \
+	$(OBJS)\corelib_collheaderctrlg.obj \
 	$(OBJS)\corelib_gtk.obj \
 	$(OBJS)\corelib_metal.obj \
 	$(OBJS)\corelib_mono.obj \
@@ -8483,6 +8491,11 @@ $(OBJS)\monodll_evtloop.obj: ..\..\src\msw\evtloop.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(MONODLL_CXXFLAGS) ..\..\src\msw\evtloop.cpp
 !endif
 
+!if "$(USE_GUI)" == "1"
+$(OBJS)\monodll_collheaderctrlg.obj: ..\..\src\generic\collheaderctrlg.cpp
+	$(CXX) /c /nologo /TP /Fo$@ $(MONODLL_CXXFLAGS) ..\..\src\generic\collheaderctrlg.cpp
+!endif
+
 !if "$(USE_GUI)" == "1"
 $(OBJS)\monodll_accelcmn.obj: ..\..\src\common\accelcmn.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(MONODLL_CXXFLAGS) ..\..\src\common\accelcmn.cpp
@@ -10985,6 +10998,11 @@ $(OBJS)\monolib_evtloop.obj: ..\..\src\msw\evtloop.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(MONOLIB_CXXFLAGS) ..\..\src\msw\evtloop.cpp
 !endif
 
+!if "$(USE_GUI)" == "1"
+$(OBJS)\monolib_collheaderctrlg.obj: ..\..\src\generic\collheaderctrlg.cpp
+	$(CXX) /c /nologo /TP /Fo$@ $(MONOLIB_CXXFLAGS) ..\..\src\generic\collheaderctrlg.cpp
+!endif
+
 !if "$(USE_GUI)" == "1"
 $(OBJS)\monolib_accelcmn.obj: ..\..\src\common\accelcmn.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(MONOLIB_CXXFLAGS) ..\..\src\common\accelcmn.cpp
@@ -13424,6 +13442,11 @@ $(OBJS)\coredll_evtloop.obj: ..\..\src\msw\evtloop.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(COREDLL_CXXFLAGS) ..\..\src\msw\evtloop.cpp
 !endif
 
+!if "$(USE_GUI)" == "1"
+$(OBJS)\coredll_collheaderctrlg.obj: ..\..\src\generic\collheaderctrlg.cpp
+	$(CXX) /c /nologo /TP /Fo$@ $(COREDLL_CXXFLAGS) ..\..\src\generic\collheaderctrlg.cpp
+!endif
+
 !if "$(USE_GUI)" == "1"
 $(OBJS)\coredll_accelcmn.obj: ..\..\src\common\accelcmn.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(COREDLL_CXXFLAGS) ..\..\src\common\accelcmn.cpp
@@ -14888,6 +14911,11 @@ $(OBJS)\corelib_evtloop.obj: ..\..\src\msw\evtloop.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(CORELIB_CXXFLAGS) ..\..\src\msw\evtloop.cpp
 !endif
 
+!if "$(USE_GUI)" == "1"
+$(OBJS)\corelib_collheaderctrlg.obj: ..\..\src\generic\collheaderctrlg.cpp
+	$(CXX) /c /nologo /TP /Fo$@ $(CORELIB_CXXFLAGS) ..\..\src\generic\collheaderctrlg.cpp
+!endif
+
 !if "$(USE_GUI)" == "1"
 $(OBJS)\corelib_accelcmn.obj: ..\..\src\common\accelcmn.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(CORELIB_CXXFLAGS) ..\..\src\common\accelcmn.cpp

build/msw/wx_core.vcxproj

@@ -1005,6 +1005,7 @@
     <ClCompile Include="..\..\src\generic\vscroll.cpp" />
     <ClCompile Include="..\..\src\xrc\xmlreshandler.cpp" />
     <ClCompile Include="..\..\src\msw\systhemectrl.cpp" />
+    <ClCompile Include="..\..\src\generic\collheaderctrlg.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="..\..\src\msw\version.rc">
@@ -1375,6 +1376,8 @@
     <ClInclude Include="..\..\include\wx\testing.h" />
     <ClInclude Include="..\..\include\wx\msw\ole\safearray.h" />
     <ClInclude Include="..\..\include\wx\systhemectrl.h" />
+    <ClInclude Include="..\..\include\wx\collheaderctrl.h" />
+    <ClInclude Include="..\..\include\wx\generic\collheaderctrl.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">

build/msw/wx_core.vcxproj.filters

@@ -438,6 +438,9 @@
     <ClCompile Include="..\..\src\generic\clrpickerg.cpp">
       <Filter>Generic Sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\generic\collheaderctrlg.cpp">
+      <Filter>Generic Sources</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\src\generic\collpaneg.cpp">
       <Filter>Generic Sources</Filter>
     </ClCompile>
@@ -973,6 +976,9 @@
     <ClInclude Include="..\..\include\wx\cmndata.h">
       <Filter>Common Headers</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\include\wx\collheaderctrl.h">
+      <Filter>Common Headers</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\include\wx\collpane.h">
       <Filter>Common Headers</Filter>
     </ClInclude>
@@ -1144,6 +1150,9 @@
     <ClInclude Include="..\..\include\wx\generic\clrpickerg.h">
       <Filter>Generic Headers</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\include\wx\generic\collheaderctrl.h">
+      <Filter>Generic Headers</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\include\wx\generic\collpaneg.h">
       <Filter>Generic Headers</Filter>
     </ClInclude>

build/msw/wx_vc7_core.vcproj

@@ -1070,6 +1070,9 @@
 			<File
 				RelativePath="..\..\src\generic\clrpickerg.cpp">
 			</File>
+			<File
+				RelativePath="..\..\src\generic\collheaderctrlg.cpp">
+			</File>
 			<File
 				RelativePath="..\..\src\generic\collpaneg.cpp">
 			</File>
@@ -1668,6 +1671,9 @@
 			<File
 				RelativePath="..\..\include\wx\generic\clrpickerg.h">
 			</File>
+			<File
+				RelativePath="..\..\include\wx\generic\collheaderctrl.h">
+			</File>
 			<File
 				RelativePath="..\..\include\wx\generic\collpaneg.h">
 			</File>
@@ -1985,6 +1991,9 @@
 			<File
 				RelativePath="..\..\include\wx\cmndata.h">
 			</File>
+			<File
+				RelativePath="..\..\include\wx\collheaderctrl.h">
+			</File>
 			<File
 				RelativePath="..\..\include\wx\collpane.h">
 			</File>

build/msw/wx_vc8_core.vcproj

@@ -1839,6 +1839,10 @@
 				RelativePath="..\..\src\generic\clrpickerg.cpp"
 				>
 			</File>
+			<File
+				RelativePath="..\..\src\generic\collheaderctrlg.cpp"
+				>
+			</File>
 			<File
 				RelativePath="..\..\src\generic\collpaneg.cpp"
 				>
@@ -2726,6 +2730,10 @@
 				RelativePath="..\..\include\wx\generic\clrpickerg.h"
 				>
 			</File>
+			<File
+				RelativePath="..\..\include\wx\generic\collheaderctrl.h"
+				>
+			</File>
 			<File
 				RelativePath="..\..\include\wx\generic\collpaneg.h"
 				>
@@ -3148,6 +3156,10 @@
 				RelativePath="..\..\include\wx\cmndata.h"
 				>
 			</File>
+			<File
+				RelativePath="..\..\include\wx\collheaderctrl.h"
+				>
+			</File>
 			<File
 				RelativePath="..\..\include\wx\collpane.h"
 				>

build/msw/wx_vc9_core.vcproj

@@ -1835,6 +1835,10 @@
 				RelativePath="..\..\src\generic\clrpickerg.cpp"
 				>
 			</File>
+			<File
+				RelativePath="..\..\src\generic\collheaderctrlg.cpp"
+				>
+			</File>
 			<File
 				RelativePath="..\..\src\generic\collpaneg.cpp"
 				>
@@ -2722,6 +2726,10 @@
 				RelativePath="..\..\include\wx\generic\clrpickerg.h"
 				>
 			</File>
+			<File
+				RelativePath="..\..\include\wx\generic\collheaderctrl.h"
+				>
+			</File>
 			<File
 				RelativePath="..\..\include\wx\generic\collpaneg.h"
 				>
@@ -3144,6 +3152,10 @@
 				RelativePath="..\..\include\wx\cmndata.h"
 				>
 			</File>
+			<File
+				RelativePath="..\..\include\wx\collheaderctrl.h"
+				>
+			</File>
 			<File
 				RelativePath="..\..\include\wx\collpane.h"
 				>

include/wx/collheaderctrl.h

@@ -0,0 +1,97 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/collheaderctrl.h
+// Purpose:     wxCollapsibleHeaderCtrl
+// Author:      Tobias Taschner
+// Created:     2015-09-19
+// Copyright:   (c) 2015 wxWidgets development team
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_COLLAPSIBLEHEADER_CTRL_H_
+#define _WX_COLLAPSIBLEHEADER_CTRL_H_
+
+#include "wx/defs.h"
+
+#if wxUSE_COLLPANE
+
+#include "wx/control.h"
+
+// class name
+extern WXDLLIMPEXP_DATA_CORE(const char) wxCollapsibleHeaderCtrlNameStr[];
+
+//
+// wxGenericCollapsibleHeaderCtrl
+//
+
+class wxCollapsibleHeaderCtrlBase : public wxControl
+{
+public:
+    wxCollapsibleHeaderCtrlBase() { }
+
+    wxCollapsibleHeaderCtrlBase(wxWindow *parent,
+        wxWindowID id,
+        const wxString& label,
+        const wxPoint& pos = wxDefaultPosition,
+        const wxSize& size = wxDefaultSize,
+        long style = wxBORDER_NONE,
+        const wxValidator& validator = wxDefaultValidator,
+        const wxString& name = wxCollapsibleHeaderCtrlNameStr)
+    {
+        Create(parent, id, label, pos, size, style, validator, name);
+    }
+
+    bool Create(wxWindow *parent,
+        wxWindowID id,
+        const wxString& label,
+        const wxPoint& pos = wxDefaultPosition,
+        const wxSize& size = wxDefaultSize,
+        long style = wxBORDER_NONE,
+        const wxValidator& validator = wxDefaultValidator,
+        const wxString& name = wxCollapsibleHeaderCtrlNameStr);
+
+    virtual void SetCollapsed(bool collapsed = true) = 0;
+
+    virtual bool IsCollapsed() const = 0;
+
+private:
+
+    wxDECLARE_NO_COPY_CLASS(wxCollapsibleHeaderCtrlBase);
+};
+
+wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_COLLAPSIBLEHEADER_CHANGED, wxCommandEvent);
+
+#define wxCollapsibleHeaderChangedHandler(func) \
+    wxEVENT_HANDLER_CAST(wxCommandEventFunction, func)
+
+#define EVT_COLLAPSIBLEHEADER_CHANGED(id, fn) \
+    wx__DECLARE_EVT1(wxEVT_COLLAPSIBLEHEADER_CHANGED, id, wxCollapsibleHeaderChangedHandler(fn))
+
+// There currently only is the native implementation, use for all ports
+
+#include "wx/generic/collheaderctrl.h"
+
+class wxCollapsibleHeaderCtrl : public wxGenericCollapsibleHeaderCtrl
+{
+public:
+    wxCollapsibleHeaderCtrl() { }
+
+    wxCollapsibleHeaderCtrl(wxWindow *parent,
+        wxWindowID id,
+        const wxString& label,
+        const wxPoint& pos = wxDefaultPosition,
+        const wxSize& size = wxDefaultSize,
+        long style = wxBORDER_NONE,
+        const wxValidator& validator = wxDefaultValidator,
+        const wxString& name = wxCollapsibleHeaderCtrlNameStr)
+    {
+        Create(parent, id, label, pos, size, style, validator, name);
+    }
+
+private:
+
+    wxDECLARE_NO_COPY_CLASS(wxCollapsibleHeaderCtrl);
+};
+
+#endif // wxUSE_COLLPANE
+
+#endif // _WX_COLLAPSIBLEHEADER_CTRL_H_

include/wx/generic/collheaderctrl.h

@@ -0,0 +1,82 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/generic/collheaderctrl.h
+// Purpose:     wxGenericCollapsibleHeaderCtrl
+// Author:      Tobias Taschner
+// Created:     2015-09-19
+// Copyright:   (c) 2015 wxWidgets development team
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_GENERIC_COLLAPSIBLEHEADER_CTRL_H_
+#define _WX_GENERIC_COLLAPSIBLEHEADER_CTRL_H_
+
+class wxGenericCollapsibleHeaderCtrl : public wxCollapsibleHeaderCtrlBase
+{
+public:
+    wxGenericCollapsibleHeaderCtrl() { Init(); }
+
+    wxGenericCollapsibleHeaderCtrl(wxWindow *parent,
+        wxWindowID id,
+        const wxString& label,
+        const wxPoint& pos = wxDefaultPosition,
+        const wxSize& size = wxDefaultSize,
+        long style = wxBORDER_NONE,
+        const wxValidator& validator = wxDefaultValidator,
+        const wxString& name = wxCollapsibleHeaderCtrlNameStr)
+    {
+        Init();
+
+        Create(parent, id, label, pos, size, style, validator, name);
+    }
+
+    bool Create(wxWindow *parent,
+        wxWindowID id,
+        const wxString& label,
+        const wxPoint& pos = wxDefaultPosition,
+        const wxSize& size = wxDefaultSize,
+        long style = wxBORDER_NONE,
+        const wxValidator& validator = wxDefaultValidator,
+        const wxString& name = wxCollapsibleHeaderCtrlNameStr);
+
+    virtual void SetCollapsed(bool collapsed = true) wxOVERRIDE;
+
+    virtual bool IsCollapsed() const wxOVERRIDE
+        { return m_collapsed; }
+
+protected:
+
+    virtual wxSize DoGetBestClientSize() const wxOVERRIDE;
+
+private:
+    bool m_collapsed;
+    bool m_inWindow;
+    bool m_mouseDown;
+
+    void Init();
+
+    void OnPaint(wxPaintEvent& event);
+
+    // Handle set/kill focus events (invalidate for painting focus rect)
+    void OnFocus(wxFocusEvent& event);
+
+    // Handle click
+    void OnLeftUp(wxMouseEvent& event);
+
+    // Handle pressed state
+    void OnLeftDown(wxMouseEvent& event);
+
+    // Handle current state
+    void OnEnterWindow(wxMouseEvent& event);
+
+    void OnLeaveWindow(wxMouseEvent& event);
+
+    // Toggle on space
+    void OnChar(wxKeyEvent& event);
+
+    void DoSetCollapsed(bool collapsed);
+
+    wxDECLARE_NO_COPY_CLASS(wxGenericCollapsibleHeaderCtrl);
+};
+
+
+#endif // _WX_GENERIC_COLLAPSIBLEHEADER_CTRL_H_

include/wx/generic/collpaneg.h

@@ -12,7 +12,7 @@
 #define _WX_COLLAPSABLE_PANE_H_GENERIC_
 
 // forward declared
-class WXDLLIMPEXP_FWD_CORE wxButton;
+class WXDLLIMPEXP_FWD_CORE wxCollapsibleHeaderCtrl;
 class WXDLLIMPEXP_FWD_CORE wxStaticLine;
 #if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__)
 class WXDLLIMPEXP_FWD_CORE wxDisclosureTriangle;
@@ -63,8 +63,7 @@ public:
         { return m_pPane==NULL || !m_pPane->IsShown(); }
     virtual wxWindow *GetPane() const
         { return m_pPane; }
-    virtual wxString GetLabel() const
+    virtual wxString GetLabel() const;
-        { return m_strLabel; }
 
     virtual bool Layout();
 
@@ -80,22 +79,18 @@ protected:
     // overridden methods
     virtual wxSize DoGetBestSize() const;
 
-    wxString GetBtnLabel() const;
     int GetBorder() const;
 
     // child controls
 #if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__)
     wxDisclosureTriangle *m_pButton;
 #else
-    wxButton *m_pButton;
+    wxCollapsibleHeaderCtrl *m_pButton;
 #endif
     wxStaticLine *m_pStaticLine;
     wxWindow *m_pPane;
     wxSizer *m_sz;
 
-    // the button label without ">>" or "<<"
-    wxString m_strLabel;
-
 private:
     void Init();
 

interface/wx/collheaderctrl.h

@@ -0,0 +1,78 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        interface/collheaderctrl.h
+// Purpose:     wxCollapsibleHeaderCtrl documentation
+// Author:      Tobias Taschner
+// Created:     2015-09-19
+// Copyright:   (c) 2015 wxWidgets development team
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+/**
+    @class wxCollapsibleHeaderCtrl
+
+    Header control above a collapsible pane.
+
+    The collapsible header usually constists of a small indicator of the
+    collapsed state and the label text beside it.
+    This class is used by the generic implemetation of wxCollapsiblePane but
+    maybe used in more complex layouts for other uses.
+
+    @beginEventTable{wxCommandEvent}
+    @event{EVT_COLLAPSIBLEHEADER_CHANGED(id, func)}
+        User changed the collapsed state.
+    @endEventTable
+
+    @since 3.1.0
+
+    @library{wxcore}
+    @category{ctrl}
+
+    @see wxCollapsiblePane
+*/
+class wxCollapsibleHeaderCtrl : public wxControl
+{
+public:
+    wxCollapsibleHeaderCtrl() { }
+
+    /**
+        Constructor fully creating the control.
+
+        The arguments have the usual meanings and only @a parent is typically
+        required.
+    */
+    wxCollapsibleHeaderCtrl(wxWindow *parent,
+        wxWindowID id,
+        const wxString& label,
+        const wxPoint& pos = wxDefaultPosition,
+        const wxSize& size = wxDefaultSize,
+        long style = wxBORDER_NONE,
+        const wxValidator& validator = wxDefaultValidator,
+        const wxString& name = wxCollapsibleHeaderCtrlNameStr);
+
+    /**
+        Create the control initialized using the default constructor.
+
+        This method can be used to finish the control creation if it hadn't
+        been done already by using the non-default constructor.
+    */
+    bool Create(wxWindow *parent,
+        wxWindowID id,
+        const wxString& label,
+        const wxPoint& pos = wxDefaultPosition,
+        const wxSize& size = wxDefaultSize,
+        long style = wxBORDER_NONE,
+        const wxValidator& validator = wxDefaultValidator,
+        const wxString& name = wxCollapsibleHeaderCtrlNameStr);
+
+    /**
+        Set collpased state of the header.
+    */
+    virtual void SetCollapsed(bool collapsed = true);
+
+    /**
+        Returns @c true if the control is collapsed.
+
+        @see SetCollapsed()
+    */
+    virtual bool IsCollapsed() const;
+};

src/generic/collheaderctrlg.cpp

@@ -0,0 +1,193 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        src/generic/collheaderctrlg.cpp
+// Purpose:     Generic wxCollapsibleHeaderCtrl implementation
+// Author:      Tobias Taschner
+// Created:     2015-09-19
+// Copyright:   (c) 2015 wxWidgets development team
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+#pragma hdrstop
+#endif
+
+#include "wx/defs.h"
+
+#if wxUSE_COLLPANE
+
+#include "wx/collheaderctrl.h"
+
+#ifndef WX_PRECOMP
+    #include "wx/sizer.h"
+#endif // !WX_PRECOMP
+
+#include "wx/renderer.h"
+
+// if we have another implementation of this class we should extract
+// the lines below to a common file
+
+const char wxCollapsibleHeaderCtrlNameStr[] = "collapsibleHeader";
+
+wxDEFINE_EVENT(wxEVT_COLLAPSIBLEHEADER_CHANGED, wxCommandEvent);
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+void wxGenericCollapsibleHeaderCtrl::Init()
+{
+    m_collapsed = true;
+    m_inWindow = false;
+    m_mouseDown = false;
+}
+
+bool wxGenericCollapsibleHeaderCtrl::Create(wxWindow *parent,
+    wxWindowID id,
+    const wxString& label,
+    const wxPoint& pos,
+    const wxSize& size,
+    long style,
+    const wxValidator& validator,
+    const wxString& name)
+{
+    if ( !wxControl::Create(parent, id, pos, size, style, validator, name) )
+        return false;
+
+    SetLabel(label);
+
+    Bind(wxEVT_PAINT, &wxGenericCollapsibleHeaderCtrl::OnPaint, this);
+    Bind(wxEVT_LEFT_DOWN, &wxGenericCollapsibleHeaderCtrl::OnLeftDown, this);
+    Bind(wxEVT_LEFT_UP, &wxGenericCollapsibleHeaderCtrl::OnLeftUp, this);
+    Bind(wxEVT_ENTER_WINDOW, &wxGenericCollapsibleHeaderCtrl::OnEnterWindow, this);
+    Bind(wxEVT_LEAVE_WINDOW, &wxGenericCollapsibleHeaderCtrl::OnLeaveWindow, this);
+    Bind(wxEVT_CHAR, &wxGenericCollapsibleHeaderCtrl::OnChar, this);
+    Bind(wxEVT_SET_FOCUS, &wxGenericCollapsibleHeaderCtrl::OnFocus, this);
+    Bind(wxEVT_KILL_FOCUS, &wxGenericCollapsibleHeaderCtrl::OnFocus, this);
+
+    return true;
+}
+
+wxSize wxGenericCollapsibleHeaderCtrl::DoGetBestClientSize() const
+{
+    wxClientDC dc(const_cast<wxGenericCollapsibleHeaderCtrl*>(this));
+    wxSize btnSize = wxRendererNative::Get().GetCollapseButtonSize(const_cast<wxGenericCollapsibleHeaderCtrl*>(this), dc);
+    wxString text;
+    wxControl::FindAccelIndex(GetLabel(), &text);
+    wxSize textSize = dc.GetTextExtent(text);
+    // Add some padding if the label is not empty
+    if ( textSize.x > 0 )
+        textSize.x += FromDIP(4);
+
+    return wxSize(btnSize.x + textSize.x,
+        wxMax(textSize.y, btnSize.y));
+}
+
+void wxGenericCollapsibleHeaderCtrl::SetCollapsed(bool collapsed)
+{
+    m_collapsed = collapsed;
+    Refresh();
+}
+
+void wxGenericCollapsibleHeaderCtrl::DoSetCollapsed(bool collapsed)
+{
+    SetCollapsed(collapsed);
+
+    wxCommandEvent evt(wxEVT_COLLAPSIBLEHEADER_CHANGED, GetId());
+    evt.SetEventObject(this);
+    ProcessEvent(evt);
+}
+
+void wxGenericCollapsibleHeaderCtrl::OnFocus(wxFocusEvent& event)
+{
+    Refresh();
+    event.Skip();
+}
+
+void wxGenericCollapsibleHeaderCtrl::OnChar(wxKeyEvent& event)
+{
+    switch (event.GetKeyCode())
+    {
+    case WXK_SPACE:
+    case WXK_RETURN:
+        DoSetCollapsed(!m_collapsed);
+        break;
+    default:
+        event.Skip();
+        break;
+    }
+}
+
+void wxGenericCollapsibleHeaderCtrl::OnEnterWindow(wxMouseEvent& event)
+{
+    m_inWindow = true;
+    Refresh();
+    event.Skip();
+}
+
+void wxGenericCollapsibleHeaderCtrl::OnLeaveWindow(wxMouseEvent& event)
+{
+    m_inWindow = false;
+    Refresh();
+    event.Skip();
+}
+
+void wxGenericCollapsibleHeaderCtrl::OnLeftUp(wxMouseEvent& event)
+{
+    m_mouseDown = false;
+    DoSetCollapsed(!m_collapsed);
+    event.Skip();
+}
+
+void wxGenericCollapsibleHeaderCtrl::OnLeftDown(wxMouseEvent& event)
+{
+    m_mouseDown = true;
+    Refresh();
+    event.Skip();
+}
+
+void wxGenericCollapsibleHeaderCtrl::OnPaint(wxPaintEvent& WXUNUSED(event))
+{
+    wxPaintDC dc(this);
+
+    wxRect rect(wxPoint(0, 0), GetClientSize());
+
+    wxSize btnSize = wxRendererNative::Get().GetCollapseButtonSize(this, dc);
+
+    wxRect btnRect(wxPoint(0, 0), btnSize);
+    btnRect = btnRect.CenterIn(rect, wxVERTICAL);
+
+    int flags = 0;
+
+    if ( m_inWindow )
+        flags |= wxCONTROL_CURRENT;
+
+    if ( m_mouseDown )
+        flags |= wxCONTROL_PRESSED;
+
+    if ( !m_collapsed )
+        flags |= wxCONTROL_EXPANDED;
+
+    wxRendererNative::Get().DrawCollapseButton(this, dc, btnRect, flags);
+
+    wxString text;
+    int indexAccel = wxControl::FindAccelIndex(GetLabel(), &text);
+
+    wxSize textSize = dc.GetTextExtent(text);
+
+    wxRect textRect(wxPoint(btnSize.x + FromDIP(2), 0), textSize);
+    textRect = textRect.CenterIn(rect, wxVERTICAL);
+
+    dc.DrawLabel(text, textRect, wxALIGN_CENTRE_VERTICAL, indexAccel);
+
+    if ( HasFocus() )
+        wxRendererNative::Get().DrawFocusRect(this, dc, textRect.Inflate(1), flags);
+}
+
+
+#endif // wxUSE_COLLPANE

src/generic/collpaneg.cpp

@@ -28,12 +28,12 @@
 
 #ifndef WX_PRECOMP
     #include "wx/toplevel.h"
-    #include "wx/button.h"
     #include "wx/sizer.h"
     #include "wx/panel.h"
 #endif // !WX_PRECOMP
 
 #include "wx/statline.h"
+#include "wx/collheaderctrl.h"
 
 // ----------------------------------------------------------------------------
 // constants
@@ -54,7 +54,7 @@ wxIMPLEMENT_DYNAMIC_CLASS(wxGenericCollapsiblePane, wxControl);
 wxIMPLEMENT_DYNAMIC_CLASS(wxCollapsiblePaneEvent, wxCommandEvent);
 
 wxBEGIN_EVENT_TABLE(wxGenericCollapsiblePane, wxControl)
-    EVT_BUTTON(wxID_ANY, wxGenericCollapsiblePane::OnButton)
+    EVT_COLLAPSIBLEHEADER_CHANGED(wxID_ANY, wxGenericCollapsiblePane::OnButton)
     EVT_SIZE(wxGenericCollapsiblePane::OnSize)
 wxEND_EVENT_TABLE()
 
@@ -78,26 +78,25 @@ bool wxGenericCollapsiblePane::Create(wxWindow *parent,
     if ( !wxControl::Create(parent, id, pos, size, style, val, name) )
         return false;
 
-    m_strLabel = label;
-
     // sizer containing the expand button and possibly a static line
-    m_sz = new wxBoxSizer(wxHORIZONTAL);
+    m_sz = new wxBoxSizer(wxVERTICAL);
 
 #if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__)
     // on Mac we use the special disclosure triangle button
     m_pStaticLine = NULL;
-    m_pButton = new wxDisclosureTriangle(this, wxID_ANY, GetBtnLabel());
+    m_pButton = new wxDisclosureTriangle(this, wxID_ANY, label);
     m_sz->Add(m_pButton);
 #else
     // create children and lay them out using a wxBoxSizer
     // (so that we automatically get RTL features)
-    m_pButton = new wxButton(this, wxID_ANY, GetBtnLabel(), wxPoint(0, 0),
+    m_pButton = new wxCollapsibleHeaderCtrl(this, wxID_ANY, label, wxPoint(0, 0),
-                             wxDefaultSize, wxBU_EXACTFIT);
+                             wxDefaultSize);
     m_pStaticLine = new wxStaticLine(this, wxID_ANY);
 
     // on other platforms we put the static line and the button horizontally
     m_sz->Add(m_pButton, 0, wxLEFT|wxTOP|wxBOTTOM, GetBorder());
-    m_sz->Add(m_pStaticLine, 1, wxALIGN_CENTER|wxLEFT|wxRIGHT, GetBorder());
+    m_sz->Add(m_pStaticLine, 0, wxEXPAND, GetBorder());
+    m_pStaticLine->Hide();
 #endif
 
     // FIXME: at least under wxCE and wxGTK1 the background is black if we don't do
@@ -143,16 +142,6 @@ wxSize wxGenericCollapsiblePane::DoGetBestSize() const
     return sz;
 }
 
-wxString wxGenericCollapsiblePane::GetBtnLabel() const
-{
-    // on mac the triangle indicates the state, no string change
-#ifdef __WXMAC__
-    return m_strLabel;
-#else
-    return m_strLabel + (IsCollapsed() ? wxT(" >>") : wxT(" <<"));
-#endif
-}
-
 void wxGenericCollapsiblePane::OnStateChange(const wxSize& sz)
 {
     // minimal size has priority over the best size so set here our min size
@@ -199,7 +188,8 @@ void wxGenericCollapsiblePane::Collapse(bool collapse)
     m_pButton->SetOpen( !collapse );
 #else
     // NB: this must be done after updating our "state"
-    m_pButton->SetLabel(GetBtnLabel());
+    m_pButton->SetCollapsed(collapse);
+    m_pStaticLine->Show(!collapse);
 #endif
 
 
@@ -208,17 +198,21 @@ void wxGenericCollapsiblePane::Collapse(bool collapse)
 
 void wxGenericCollapsiblePane::SetLabel(const wxString &label)
 {
-    m_strLabel = label;
 #ifdef __WXMAC__
-    m_pButton->SetLabel(GetBtnLabel());
+    m_pButton->SetLabel(label);
 #else
-    m_pButton->SetLabel(GetBtnLabel());
+    m_pButton->SetLabel(label);
     m_pButton->SetInitialSize();
 #endif
 
     Layout();
 }
 
+wxString wxGenericCollapsiblePane::GetLabel() const
+{
+    return m_pButton->GetLabel();
+}
+
 bool wxGenericCollapsiblePane::Layout()
 {
 #ifdef __WXMAC__