@msdn=http://search.microsoft.com/search/results.aspx?qu=$$$ @pinvoke=http://pinvoke.net/$$$.htm Summary: The InvalidateRgn API !!!!C# Signature: [DllImport("user32.dll")] static extern bool InvalidateRgn(IntPtr hWnd, IntPtr hRgn, bool bErase); !!!!User-Defined Types: None. !!!!Notes: None. !!!!Tips & Tricks: Please add some! !!!!Sample Code: Please add some! !!!!Alternative Managed API: Invalidate() method Invalidate() - invalidates the entire surface causing the control to be repainted. Invalidate(bool invalidateChilden) - Optionally, invalidates the child controls assigned to the control. Invalidate(Rectangle rect) - Adds the specified rectangle to the update region of the control and causes a paint message to be sent to the control. Invalidate(Rectangle rect, bool invalidateChildern) - combination of the previous two. Invalidate(Region rgn) - Adds the specified graphics region to the update region of the control and causes a paint message to be sent to the control. Invalidate(Region rgn, bool invalidateChildren) Control.Invalidate(), Form1.Invalidate(), this.Invalidate(), Me.Invalidate() Documentation: InvalidateRgn@msdn on MSDN
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