fixes for handling WM_SYSCOLORCHANGE - now seems to work

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@12922 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/wincmn.cpp

@@ -637,6 +637,8 @@ bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
 
     m_backgroundColour = colour;
 
+    m_hasBgCol = TRUE;
+
     return TRUE;
 }
 
@@ -647,6 +649,8 @@ bool wxWindowBase::SetForegroundColour( const wxColour &colour )
 
     m_foregroundColour = colour;
 
+    m_hasFgCol = TRUE;
+
     return TRUE;
 }
 
@@ -678,6 +682,8 @@ bool wxWindowBase::SetFont(const wxFont& font)
 
     m_font = fontOk;
 
+    m_hasFont = TRUE;
+
     return TRUE;
 }