MyFullScreenDlg

Hustudent20080101

于 2013-04-23 11:24:04 发布

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分类专栏： c++MFC学习笔记

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本文介绍了一个使用MFC实现的全屏对话框应用程序的具体实现细节。包括如何初始化应用程序、设置对话框为全屏显示、处理双击关闭事件以及自定义对话框颜色等。对于希望了解或实现全屏对话框应用的开发者来说，本文提供了实用的代码示例。

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BOOL CMyFullScreenApp::InitInstance()
{
	AfxEnableControlContainer();

	// Standard initialization
	// If you are not using these features and wish to reduce the size
	//  of your final executable, you should remove from the following
	//  the specific initialization routines you do not need.

#ifdef _AFXDLL
	Enable3dControls();			// Call this when using MFC in a shared DLL
#else
	Enable3dControlsStatic();	// Call this when linking to MFC statically
#endif

	SetDialogBkColor(RGB(0,0,0),RGB(255,0,0));   
//前面一个参数是对话框的背景色，后一个是前景色
	CMyFullScreenDlg dlg;
	m_pMainWnd = &dlg;
	int nResponse = dlg.DoModal();
	if (nResponse == IDOK)
	{
		// TODO: Place code here to handle when the dialog is
		//  dismissed with OK
	}
	else if (nResponse == IDCANCEL)
	{
		// TODO: Place code here to handle when the dialog is
		//  dismissed with Cancel
	}

	// Since the dialog has been closed, return FALSE so that we exit the
	//  application, rather than start the application's message pump.
	return FALSE;
}

BOOL CMyFullScreenDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here

	SetFullScreen();
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CMyFullScreenDlg::OnLButtonDblClk(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	//this->CloseWindow();

	this->PostMessage(WM_CLOSE,0,0);
	CDialog::OnLButtonDblClk(nFlags, point);
}

void CMyFullScreenDlg::SetFullScreen()
{
	int frameWidth =  GetSystemMetrics(SM_CXFRAME);
	int frameHeight = GetSystemMetrics(SM_CYFRAME);
	int captionHeight = GetSystemMetrics(SM_CYCAPTION);
	int screenWidth = GetSystemMetrics(SM_CXSCREEN);
	int screenHeight = GetSystemMetrics(SM_CYSCREEN);
	CRect rect;
	GetClientRect(&rect);
	rect.left = rect.left - frameWidth;
	rect.top = rect.top - frameHeight - captionHeight ;
	rect.bottom = rect.top + screenHeight + 2 * frameHeight + captionHeight;
	rect.right = rect.left + screenWidth + 2 * frameWidth;
	ShowWindow(SW_HIDE);
	SetWindowPos(&wndTopMost, rect.left, rect.top, rect.Width(), rect.Height(), SWP_SHOWWINDOW);
}

HBRUSH CMyFullScreenDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) 
{
	 pDC->SetBkColor(RGB(0,0,0));
	HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);
	
	// TODO: Change any attributes of the DC here
	
	// TODO: Return a different brush if the default is not desired
	return hbr;
}