color window

hello
i created a dialog based application and using

Code:

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CClientDC dc(this);
CRect r;
GetClientRect(&r);
dc.Rectangle(r);

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i draw color to the dialog box. but, my problem is whenever OnPaint() in called, the color will over write all buttons etc. how to make the buttons visible again?

If you want colored dialogs or controls you must handle WM_CTLCOLOR message.

See an example here.