Can I force a parent window to redraw without causing its children to redraw?

Is it possible to invalidate a window without invalidating its children? (display invalidation to cause a repaint of the parent window, but not redraw its children)

This assumes that the parent window already has the "clipchildren" style, so that its painting wouldn't inh开发者_如何学编程erently invalidate the children.

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InvalidateRect() already does this. Another way is RedrawWindow() with the RDW_NOCHILDREN option.

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Parent windows are always going to redraw any child windows that intersect with the window's update region.

So, really, to get the behaviour you want, when invalidating the parent window - exclude the child rects from the region you pass to InvalidateRegion.