Repaint only part of the client area

Is there a way to get only a part of the client area with GDI?

Or do i need DirectX for this?

I mean if i wanted to repaint only a little rectangle in the client area and
leave the rest as it is.

It is possible, e.g.

- If you draw a rectangle, then your program can test the coordinates before issuing the Rectangle() API with coordinates inside your area.
- It is the same for string of characters written with DrawText() or with TextOut().
- If you have a picture, you can use BitBlt() only for the area you want to repaint.
- Or you can use "regions". See http://msdn.microsoft.com/en-us/libr...84(VS.85).aspx

Thank you Olivthill!

I'll give it a try.

Quote:

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Originally Posted by MasterDucky

Is there a way to get only a part of the client area with GDI?

I mean if i wanted to repaint only a little rectangle in the client area and
leave the rest as it is.

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Sure - that's exactly what InvalidateRect() and InvalidateRgn() are for.