Exposing Colour Flags, adding Synonym UseBackgroundColour for UseBgCol

No abbreviations in method name, include new methods in docs

include/wx/window.h

@@ -1127,6 +1127,10 @@ public:
     {
         return m_hasBgCol;
     }
+    bool UseBackgroundColour() const
+    {
+        return UseBgCol();
+    }
 
     virtual bool SetForegroundColour(const wxColour& colour);
     void SetOwnForegroundColour(const wxColour& colour)
@@ -1135,6 +1139,14 @@ public:
             m_inheritFgCol = false;
     }
     wxColour GetForegroundColour() const;
+    bool UseForegroundColour() const
+    {
+        return m_hasFgCol;
+    }
+    bool InheritsForgroundColour() const
+    {
+        return m_inheritFgCol;
+    }
 
         // Set/get the background style.
     virtual bool SetBackgroundStyle(wxBackgroundStyle style);

interface/wx/window.h

@@ -2216,6 +2216,12 @@ public:
     */
     bool UseBgCol() const;
 
+    /**
+        Return @true if a background colour has been set for this window.
+        Same as @ref UseBgCol()
+    */
+    bool UseBackgroundColour() const;
+
     /**
         Sets the font of the window but prevents it from being inherited by the
         children of this window.
@@ -2232,6 +2238,18 @@ public:
     */
     void SetOwnForegroundColour(const wxColour& colour);
 
+    /**
+        Return @true if a foreground colour has been set for this window.
+    */
+    bool UseForegroundColour() const;
+
+    /**
+        Return @true if this window inherits the foreground colour from its parent.
+
+        @see SetOwnForegroundColour(), InheritAttributes()
+    */
+    bool InheritsForegroundColour() const;
+
     /**
         @deprecated use wxDC::SetPalette instead.
     */