wxTextEntry::SetMargins(), GetMargins() - implemented on wxMSW and wxGTK (GTK+ 2.10+); also added similar functions into wxComboCtrl, deprecated old indent-functions; wxPropertyGrid modified to use the new functionality

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@61834 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/combobox.h

@@ -135,8 +135,8 @@ protected:
     // custom list stores.
     virtual void GTKCreateComboBoxWidget();
 
-    // return the GtkEntry part of the combobox
-    GtkEntry *GetEntry() const { return m_entry; }
+    virtual GtkEntry *GetEntry() const
+        { return m_entry; }
 
     GtkEntry*   m_entry;
 

include/wx/gtk/textctrl.h

@@ -178,6 +178,7 @@ protected:
 private:
     // overridden wxTextEntry virtual methods
     virtual GtkEditable *GetEditable() const;
+    virtual GtkEntry *GetEntry() const;
     virtual void EnableTextChangedEvents(bool enable);
 
     // change the font for everything in this control

include/wx/gtk/textentry.h

@@ -12,6 +12,7 @@
 #define _WX_GTK_TEXTENTRY_H_
 
 typedef struct _GtkEditable GtkEditable;
+typedef struct _GtkEntry GtkEntry;
 
 // ----------------------------------------------------------------------------
 // wxTextEntry: roughly corresponds to GtkEditable
@@ -55,10 +56,17 @@ public:
 protected:
     virtual wxString DoGetValue() const;
 
+    // margins functions
+    virtual bool DoSetMargins(const wxPoint& pt);
+    virtual wxPoint DoGetMargins() const;
+
 private:
     // implement this to return the associated GtkEntry or another widget
     // implementing GtkEditable
     virtual GtkEditable *GetEditable() const = 0;
+
+    // implement this to return the associated GtkEntry
+    virtual GtkEntry *GetEntry() const = 0;
 };
 
 #endif // _WX_GTK_TEXTENTRY_H_