VC realize how transparent window select from the Blog leisureful picture-transparent interface, the following method is applicable only WINDOWS2000 and XP systems: Add in the dialog box initialization function:?? #Define LWA_COLORKEY 0x00000001 #define WS_EX_LAYERED 0x00080000 typedef BOOL (WINAPI * lpfnSetLayeredWindowAttributes ) (HWND hWnd, COLORREF crKey, BYTE bAlpha, DWORD dwFlags); lpfnSetLayeredWindowAttributes SetLayeredWindowAttributes; // disposed edges of the transparent COLORREF maskColor = RGB (0,255,0); HMODULE hUser32 = GetModuleHandle ( "user32.dll"); SetLayeredWindowAttributes = (lpfnSetLayeredWindowAttributes ) GetProcAddress (hUser32, "SetLayeredWindowAttributes"); SetWindowLong (GetSafeHwnd (), GWL_EXSTYLE, GetWindowLong (GetSafeHwnd (), GWL_EXSTYLE) │ WS_EX_LAYERED);?? SetLayeredWindowAttributes (GetSafeHwnd (), maskColor, 255, LWA_COLORKEY); FreeLibrary (hUser32); Where MaskColor is a transparent color, that is, what color zone is set to transparent
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