隐藏或显示任务栏的vc代码

//隐藏或显示任务栏
void CMainFrame::gShowHideTaskBar(BOOL bHide)
{
    CRect rectWorkArea = CRect(0,0,0,0);
    CRect rectTaskBar = CRect(0,0,0,0);
    
    CWnd* pWnd = CWnd::FindWindow("Shell_TrayWnd", "");
    
    if( bHide )//隐藏
    {
        SystemParametersInfo(SPI_GETWORKAREA,0,    (LPVOID)&rectWorkArea,0);
        
        if( pWnd )
        {
            pWnd->GetWindowRect(rectTaskBar);
            rectWorkArea.bottom += rectTaskBar.Height();
            SystemParametersInfo(SPI_SETWORKAREA,0,(LPVOID)&rectWorkArea,0);
            
            pWnd->ShowWindow(SW_HIDE);
        }
    }
    else//显示
    {
        SystemParametersInfo(SPI_GETWORKAREA,0,(LPVOID)&rectWorkArea,0);
        if( pWnd )
        {
            pWnd->GetWindowRect(rectTaskBar);
            rectWorkArea.bottom -= rectTaskBar.Height();
            SystemParametersInfo(SPI_SETWORKAREA,0,(LPVOID)&rectWorkArea,0);
            
            pWnd->ShowWindow(SW_SHOW);
        }
    }
}