WM_SIZE Code Example

Windows Mobile 6.5
4/19/2010

Use the WM_SIZE notification for detecting screen rotations for, and performing processing on all full-screen application windows. The following code is an example of a window's WndProc function that includes a case statement for handling the WM_SIZE notification.

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message) 
     {
         // The code for handling other Windows messages has been omitted for clarity.
         // ...
        case WM_SIZE:
            {
                INT nWidth = LOWORD(lParam);
                HWND hEditBox = GetDlgItem(hWnd, IDC_EDIT);
                HWND hEnterButton = GetDlgItem(hWnd, IDC_BUTTON);

                MoveWindow(hEditBox, 8, 4, nWidth - 70, 20, TRUE);
                MoveWindow(hEnterButton, nWidth - 57, 4, 50, 20, TRUE);
            }
            break;
    }
}

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