protected override void WndProc(ref Message m)
{
IntPtr preR = m.Result;
// Ignore focus
if (m.Msg == 7 /* WM_SETFOCUS */)
{
return;
}
else if (m.Msg == 0x000f /* WM_PAINT */)
{
this.realUpdateRects = UI.GetUpdateRegion(this);
if (realUpdateRects != null && realUpdateRects.Length >= 5) // '5' chosen arbitrarily
{
this.realUpdateRects = null;
}
base.WndProc(ref m);
}
else
{
base.WndProc(ref m);
}
}