小記MFC下全屏實現方法之一

在CMainFrame類下添加變量：

public:
    BOOL m_bFullScreenMode;        //全屏顯示標志

private:
    WINDOWPLACEMENT m_OldWndPlacement;         //用來保存原窗口位置
    CRect m_FullScreenRect;        //表示全屏顯示時的窗口位置

 

添加函數：

public:
    void FullScreenModeOn();
    void FullScreenModeOff();

 

重載函數（自己也不算太明白）：
    void OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI);

 

內容為：

void CMainFrame::FullScreenModeOn()
{
    GetWindowPlacement( &m_OldWndPlacement);
    CRect WindowRect;
    GetWindowRect(&WindowRect);
    CRect ClientRect;
    RepositionBars(0, 0xffff, AFX_IDW_PANE_FIRST, reposQuery, &ClientRect);
    ClientToScreen(&ClientRect);

    // 獲取屏幕的分辨率

    int nFullWidth=GetSystemMetrics(SM_CXSCREEN);
    int nFullHeight=GetSystemMetrics(SM_CYSCREEN);
   
    //將除控制條外的客戶區全屏顯示到從(0,0)到(nFullWidth, nFullHeight)區域,
    //將(0,0)和(nFullWidth, nFullHeight)兩個點外擴充原窗口和除控制條之外的 客戶區位置間的差值, 就得到全屏顯示的窗口位置
    m_FullScreenRect.left = WindowRect.left - ClientRect.left;
    m_FullScreenRect.top = WindowRect.top - ClientRect.top;
    m_FullScreenRect.right = WindowRect.right - ClientRect.right + nFullWidth;
    m_FullScreenRect.bottom = WindowRect.bottom - ClientRect.bottom + nFullHeight;
    m_bFullScreenMode = TRUE;
   
    //設置全屏顯示標志為 TRUE
    //進入全屏顯示狀態
    WINDOWPLACEMENT wndpl;
    wndpl.length=sizeof(WINDOWPLACEMENT);
    wndpl.flags=0;
    wndpl.showCmd=SW_SHOWNORMAL;
    wndpl.rcNormalPosition=m_FullScreenRect;
    SetWindowPlacement(&wndpl);

    m_bFullScreenMode=true;
}

void CMainFrame::FullScreenModeOff()
{
    ShowWindow(SW_HIDE);
    SetWindowPlacement(&m_OldWndPlacement);
    m_bFullScreenMode=false;
}

void CMainFrame::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI)
{
    if(m_bFullScreenMode)
    {
        lpMMI -> ptMaxSize.x = m_FullScreenRect.Width();
        lpMMI -> ptMaxSize.y = m_FullScreenRect.Height();
        lpMMI -> ptMaxPosition.x=m_FullScreenRect.Width();
        lpMMI -> ptMaxPosition.y=m_FullScreenRect.Height();
        // 最大的Track尺寸也要改變
        lpMMI -> ptMaxTrackSize.x=m_FullScreenRect.Width();
        lpMMI -> ptMaxTrackSize.y=m_FullScreenRect.Height();
    }
    CFrameWnd::OnGetMinMaxInfo(lpMMI) ;
}

 

對CMainFrame類改動到此為止。

只需要在view中添加消息，獲取CMainFrame的指針pWnd，調用FullScreenModeOn/Off()即可。