The Old New Thing

Of what use is the RDW_INTERNALPAINT flag?

June 21, 2013 Jun 21, 2013 06/21/13

Raymond Chen

For motivational purposes, let's start with a program that displays a DWM thumbnail. Start with the scratch program and add the following: #include <dwmapi.h> HWND g_hwndThumbnail; HTHUMBNAIL g_hthumb; void UpdateThumbnail(HWND hwndFrame, HWND hwndTarget) { if (g_hwndThumbnail != hwndTarget) { g_hwndThumbnail = hwndTarget; ...