Three more attempts to get metal look.

- Added a few flags for inheriting background.
     - Added wxWindow param to wxR::DrawBackground()
     - Added wxR::DrawButtonSurface()
     - Removed wxR::DrawBackground() from wxR::DrawButtonBorder()
     - Adde DrawMetal to Metal theme
  Fixed minor bug in wxGTK scrollbar.
  Changed code in wxX11 wxTLW so that startup flicker no
    longer occurs in wxFrame.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15136 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/univ/winuniv.cpp

@@ -111,8 +111,6 @@ void wxWindow::Init()
     
     m_oldSize.x = -1;
     m_oldSize.y = -1;
-    
-    m_hasDialogBackground = FALSE;
 }
 
 bool wxWindow::Create(wxWindow *parent,
@@ -304,7 +302,7 @@ bool wxWindow::DoDrawBackground(wxDC& dc)
 void wxWindow::EraseBackground(wxDC& dc, const wxRect& rect)
 {
     // TODO: handle bg bitmaps here!
-
+    
     m_renderer->DrawBackground(dc, wxTHEME_BG_COLOUR(this), rect, GetStateFlags());
 }