MFC實現全屏功能的代碼

很多的播放器都有快捷鍵控制窗口以全屏幕的方式顯示。給應用程序加上全屏幕的功能，並不需要很多的代碼，比如給一個基於對話框的應用程序加上全屏功能只需要以下少量代碼就可以工作了。

void CFullScreenDlg::FullScreenView(void)
{
RECT rectDesktop;
WINDOWPLACEMENT wpNew;
if (!IsFullScreen())
{
// Well need these to restore the original state.
GetWindowPlacement (&m_wpPrev);
//Adjust RECT to new size of window
::GetWindowRect ( ::GetDesktopWindow(), rectDesktop );
::AdjustWindowRectEx(rectDesktop, GetStyle(), FALSE, GetExStyle());
// Remember this for OnGetMinMaxInfo()
m_rcFullScreenRect = rectDesktop;
wpNew = m_wpPrev;
wpNew.showCmd = SW_SHOWNORMAL;
wpNew.rcNormalPosition = rectDesktop;
m_bFullScreen=true;
}
else
{
// 退出全屏幕時恢復到原來的窗口狀態
m_bFullScreen=false;
wpNew = m_wpPrev;
}
SetWindowPlacement ( &wpNew );
}
void CFullScreenDlg::OnGetMinMaxInfo(MINMAXINFO* lpMMI)
{
// TODO: Add your message handler code here and/or call default
if (IsFullScreen())
{
lpMMI->ptMaxSize.y = m_rcFullScreenRect.Height();
lpMMI->ptMaxTrackSize.y = lpMMI->ptMaxSize.y;
lpMMI->ptMaxSize.x = m_rcFullScreenRect.Width();
lpMMI->ptMaxTrackSize.x = lpMMI->ptMaxSize.x;
}
CDialog::OnGetMinMaxInfo(lpMMI);
}
bool CFullScreenDlg::IsFullScreen(void)
{
// 記錄窗口當前是否處於全屏狀態
return m_bFullScreen;
}