DisableSystemMenuItems(hWndDlg, TRUE);
ProgressDlgProc(HWND hWndDlg, UINT msg, WPARAM wParam, LPARAM lParam){	switch (msg)  {		case WM_INITDIALOG:			CenterWindow(hWndDlg);			return FALSE;		case WM_COMMAND:			return TRUE;	}	return FALSE;  // didn't handle the message}