void _PaintByD2D(Rectangle refreshArea)
{
D2DGraphics d2dGraphics = (D2DGraphics)graphics;
if (drawType == DrawType.NOIMAGE)
{
WindowRenderTarget wRT = (WindowRenderTarget)d2dGraphics.RenderTarget;
WindowState wstate = wRT.CheckWindowState();
if (wstate != WindowState.Occluded)
{
_RenderByD2D(d2dGraphics, refreshArea);
}
}
else
{
_RenderByD2D(d2dGraphics, refreshArea);
}
}