MFC ACTIVEX 全屏

HWND m_hWndParent;BOOL m_fullscreen;void CDialog::SwitchFullScreen(void){LONG style = ::GetWindowLong(this->m_hWnd, GWL_STYLE);if (m_fullscreen == false){//隐藏系统任务栏        CWnd * wnd = FindWindow("Shell_TrayWnd",NULL);        wnd->SetWindowPos(NULL, 0, 0, 0, 0, SWP_HIDEWINDOW);        m_hWndParent = ::GetParent(m_hWnd);           ::ShowWindow(m_hWndParent, SW_HIDE);           ::SetParent(m_hWnd, NULL);           style &= ~(WS_DLGFRAME | WS_THICKFRAME);        SetWindowLong(this->m_hWnd,GWL_STYLE, style);        this->ShowWindow(SW_SHOWMAXIMIZED);        int cx = ::GetSystemMetrics(SM_CXSCREEN);  int cy = ::GetSystemMetrics(SM_CYSCREEN);   MoveWindow(0, 0, cx, cy, TRUE);}else{ //显示系统任务栏        CWnd * wnd = FindWindow("Shell_TrayWnd",NULL);        wnd->SetWindowPos(NULL,0,0,0,0,SWP_SHOWWINDOW);        style |= WS_DLGFRAME | WS_THICKFRAME;        SetWindowLong(this->m_hWnd, GWL_STYLE, style);        ::SetParent(m_hWnd, m_hWndParent);           ::ShowWindow(m_hWndParent, SW_SHOW);  }m_fullscreen = !m_fullscreen;}