I know that I'm missing something, but I do not have windows to show live thumbnail preview correctly You can find a window which is an area, at least hitting the button, instead of showing the full preview, the clip will be applied to the least size (160x25) (as it happens with the other window).
1) Something to preview:
1) The preview works fine in Windows Live Messenger, so Microsoft has found a way to do this. 2) If I see the phone SetWindowRgn only from the first window, it is fine (hence not knowing how to deal with a fault regioned windows of its DWM.) I can call Works SetWindowRgn appears several times before the window and it works great.
3) After resizing the window in case of resizing, I have to set the window area so fixing it before setting it up.
4) Even when using the default window process, the bug still happens. So it is not a mistake of messaging processing incorrectly (but not a 'processing' of a :) can be a mistake)
5) When (instead of clicking on the task bar button at least In the Minimize Button window), the preview works normally as well (even after setting the visible area). Again, it is proving how it is not dealing with the preview.
A bug occurs when I set the area after the window is displayed. To follow the code:
create zero (histance hInst) {char * className = "default"; / * Register * / WNDCLASSEX wcex; Memset (& amp; wcex, 0, sizeof (wcex)); Wcex.cbSize = sizeof (WNDCLASSEX); Wcex.style = CS_HREDRAW | CS_VREDRAW; Wcex.lpfnWndProc = DefWindowProc; Wcex.hInstance = hInst; Wcex.hCursor = Loaders (NULL, IDC_ARROW); Wcex.hbrBackground = (HBRUSH) (COLOR_WINDOW + 1); Wcex.lpszClassName = className; RegisterClassEx (& amp; wcex); / * Create * / HWND hwnd = CreateWindow (className, className, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, zero, zero, hInst, zero); / * * Set area * If first shown in front of window, minimize preview on Vista Works * / RECT. GetWindowRect (hWnd, & Rect); HRGN rgn = CreateRoundRectRgn (0,0, rect.right-rect.left, rect.bottomrect.top, 15,15); SetWindowRgn (hWnd, rgn, true); / * Show window * / ShowWindow (hwnd, SW_SHOW); / * * Set this area a second time * By doing this, the preview will be less broken on Vista * / rgn = CreateRoundRectRgn (0,0, rect.right-rect.left, rect.bottom-rect.top, 3535) ); SetWindowRgn (hWnd, rgn, true); } Integer APIENTRY _tWinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, integer nCmdShow) {MSG message; (HInstance); While (GetMessage (& msg, NULL, 0, 0)) {translation message (& amp; msg); DispatchMessage (& amp; msg); } Return (int) msg.wParam; } After the text "itemprop =" text "> Microsoft responded to a technical assistance event and a bug within Vista Listed as it
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