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/checkbox.cpp

@@ -70,8 +70,6 @@ bool wxCheckBox::Create(wxWindow *parent,
     if ( !wxControl::Create(parent, id, pos, size, style, wxDefaultValidator, name) )
         return FALSE;
 
-    m_hasDialogBackground = TRUE;
-
     SetLabel(label);
     SetBestSize(size);