mfc 窗口透明设置

 view  ：PreCreateWindow(CREATESTRUCT& cs)
{
    // TODO: Modify the Window class or styles here by modifying
    //  the CREATESTRUCT cs
     

    cs.lpszClass=AfxRegisterWndClass(CS_HREDRAW |CS_VREDRAW);// view背景透明

CMainFrame::PreCreateWindow(CREATESTRUCT& cs)

cs.lpszClass=AfxRegisterWndClass(CS_HREDRAW |CS_VREDRAW,LoadCursor(NULL,IDC_CROSS),(HBRUSH)GetStockObject(BLACK_BRUSH),0);