OnInitDialog中增加
int xscreen=GetSystemMetrics(SM_CXSCREEN);
int yscreen=GetSystemMetrics(SM_CYSCREEN);
SetWindowPos(NULL,0,0,xscreen,yscreen,SWP_NOZORDER);
然后设置主对话框没有边框, 弹出式, z-order在最高层, 就能启动时覆盖整个屏幕
WS_POPUP WS_EX_TOPMOST
转载于:https://blog.51cto.com/co63oc/1096751