implemented GetDefaultBorder() in wxControl, override it in some controls which don't want to have sunken style by default

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@21719 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/statbmp.cpp

@@ -98,12 +98,6 @@ bool wxStaticBitmap::Create(wxWindow *parent,
                             long style,
                             const wxString& name)
 {
-    // default border for this control is none
-    if ( (style & wxBORDER_MASK) == wxBORDER_DEFAULT )
-    {
-        style |= wxBORDER_NONE;
-    }
-    
     if ( !CreateControl(parent, id, pos, size, style, wxDefaultValidator, name) )
         return FALSE;
 
@@ -140,6 +134,11 @@ bool wxStaticBitmap::Create(wxWindow *parent,
     return TRUE;
 }
 
+wxBorder wxStaticBitmap::GetDefaultBorder() const
+{
+    return wxBORDER_NONE;
+}
+
 WXDWORD wxStaticBitmap::MSWGetStyle(long style, WXDWORD *exstyle) const
 {
     WXDWORD msStyle = wxControl::MSWGetStyle(style, exstyle);