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• 01:22, 9 April 2025 Martini talk contribs created page WinValidateRegion (Created page with "This function ''subtracts a region from the update region of an asynchronous paint window, marking that part of the window as visually valid''. ==Syntax== WinValidateRegion(hwnd, hrgn, fIncludeClippedChildren) ==Parameters== ;hwnd (HWND) - Input: Handle of window whose update region is changed. :If this parameter is HWND_DESKTOP or a desktop window handle, the function applies to the whole screen (or desktop). ;hrgn (HRGN) - Input: Handle of subtracted region....")