pDC->SetBkMode(TRANSPARENT); hbr=(HBRUSH)GetStockObject(HOLLOW_BRUSH); // TODO: Return a different brush if the default is not desired return hbr; } 然后在編輯控件的相關(guān)事件里調(diào)用一下Invalidate。 復(fù)制代碼代碼如下: void CAlphaEditboxDlg::OnKillfocusEditkey() ...