以下代码实现在单文档程序中进入全屏和退出全屏。
在CMainFrame中增加三个成员变量:
WINDOWPLACEMENT m_OldWndPlacement;
CRect m_FullScreenRect;
BOOL m_bFullScreen;
void CMainFrame::OnFullScreen()
{
// TODO: Add your command handler code here
GetWindowPlacement(&m_OldWndPlacement); //保存原窗口位置
CRect WindowRect,ClientRect;
GetWindowRect(&WindowRect); //获取普通窗口位置
//获取各个控制条之外的客户区位置
RepositionBars(0,0xffff,AFX_IDW_PANE_FIRST,reposQuery,&ClientRect);
ClientToScreen(&ClientRect);
//获取屏幕分辩率
int nFullWidth=GetSystemMetrics(SM_CXSCREEN);
int nFullHeight=GetSystemMetrics(SM_CYSCREEN);
//计算全屏显示的窗口位置
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_bFullScreen=TRUE; //全屏标志
//进入全屏显示
WINDOWPLACEMENT wndpl;
wndpl.length=sizeof(WINDOWPLACEMENT);
wndpl.flags=0;
wndpl.showCmd=SW_SHOWNORMAL;
wndpl.rcNormalPosition=m_FullScreenRect;
SetWindowPlacement(&wndpl);
}
void CMainFrame::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI)
{
// TODO: Add your message handler code here and/or call default
if(m_bFullScreen)
{
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尺寸也要改变
lpMMI->ptMaxTrackSize.x=m_FullScreenRect.Width();
lpMMI->ptMaxTrackSize.y=m_FullScreenRect.Height();
}
CFrameWnd::OnGetMinMaxInfo(lpMMI);
}
void CMainFrame::EndFullScreen()//退出全屏显示
{
if(m_bFullScreen)
{
ShowWindow(SW_HIDE);
SetWindowPlacement(&m_OldWndPlacement);
}
}
注意了，EndFullScreen()函数可以实现退出全屏，可是在全屏显示的时候，只有view类可以接收消息，
所以必须在view类中添加如下函数，在按下esc键的时候退出全屏。
void CPlaneView::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)
{
// TODO: Add your message handler code here and/or call default
if(nChar==VK_ESCAPE)
{
CMainFrame *pFrame=(CMainFrame*)AfxGetApp()->m_pMainWnd; //获取主框架窗口的指针
pFrame->EndFullScreen(); //调用主窗口类的EndFullScreen就可以退出全屏显示状态
}
CView::OnKeyDown(nChar, nRepCnt, nFlags);
}
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