Add support for loading fonts from files.

wxFont::AddPrivateFont() can now be used to load a font from a file for the
applications private use. Update the font sample to show this.

Closes #13568.

samples/font/makefile.gcc

@@ -210,7 +210,7 @@ $(OBJS):
 
 ### Targets: ###
 
-all: $(OBJS)\font.exe
+all: $(OBJS)\font.exe data
 
 clean: 
 	-if exist $(OBJS)\*.o del $(OBJS)\*.o
@@ -220,13 +220,17 @@ clean:
 $(OBJS)\font.exe: $(FONT_OBJECTS) $(OBJS)\font_sample_rc.o
 	$(CXX) -o $@ $(FONT_OBJECTS)  $(__DEBUGINFO) $(__THREADSFLAG) -L$(LIBDIRNAME) -Wl,--subsystem,windows -mwindows $(____CAIRO_LIBDIR_FILENAMES_p) $(LDFLAGS)  $(__WXLIB_CORE_p)  $(__WXLIB_BASE_p)  $(__WXLIB_MONO_p) $(__LIB_SCINTILLA_IF_MONO_p) $(__LIB_TIFF_p) $(__LIB_JPEG_p) $(__LIB_PNG_p)   -lwxzlib$(WXDEBUGFLAG) -lwxregex$(WXUNICODEFLAG)$(WXDEBUGFLAG) -lwxexpat$(WXDEBUGFLAG) $(EXTRALIBS_FOR_BASE) $(__CAIRO_LIB_p) -lkernel32 -luser32 -lgdi32 -lcomdlg32 -lwinspool -lwinmm -lshell32 -lshlwapi -lcomctl32 -lole32 -loleaut32 -luuid -lrpcrt4 -ladvapi32 -lversion -lwsock32 -lwininet -loleacc
 
+data:
+	if not exist $(OBJS) mkdir $(OBJS)
+	for %%f in (wxprivate.ttf) do if not exist $(OBJS)\%%f copy .\%%f $(OBJS)
+
 $(OBJS)\font_sample_rc.o: ./../../samples/sample.rc
 	$(WINDRES) -i$< -o$@    --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__NDEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir $(SETUPHDIR) --include-dir ./../../include $(__CAIRO_INCLUDEDIR_p) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 $(OBJS)\font_font.o: ./font.cpp
 	$(CXX) -c -o $@ $(FONT_CXXFLAGS) $(CPPDEPS) $<
 
-.PHONY: all clean
+.PHONY: all clean data
 
 
 SHELL := $(COMSPEC)