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4/14/2010

Use the WM_SETTINGCHANGEnotification for detecting screen rotations and performing processing on any rotating application windows that are not full-screen. If your application has only full-screen application windows, there is no need to handle the WM_SETTINGCHANGEnotification.

The following code is an example of a window's WndProcfunction that includes a case statement for handling the WM_SETTINGCHANGEnotification.

Copy Code 
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, 
WPARAMwParam, 
LPARAMlParam)
{
	switch (message) 
	{
		 // The code for handling other Windows messages has been
omitted for clarity.
		 // ...
		case WM_SETTINGCHANGE:
			{
				if (
wParam == SETTINGCHANGE_RESET)
				{
					// The processing done here can include
					// resizing full-screen child windows
					// and calling the Windows Embedded CE
					// MoveWindow function on top-level windows.
					INT nWidth = GetSystemMetrics(SM_CXSCREEN);
					HWND hEditBox = GetDlgItem(hWnd, IDC_EDIT);
					HWND hEnterButton = GetDlgItem(hWnd,
IDC_BUTTON);

					MoveWindow(hEditBox, 8, 4, nWidth - 0, 20,
TRUE);
					MoveWindow(hEnterButton, nWidth - 57, 4, 50,
20, TRUE);
			}
		}
			break;
}
}

See Also