在《Windows程序设计(第五版)》中第365页,有如下代码:case WM_DESTROY:
DeleteObject((HBRUSH)SetClassLong(hwnd,GCL_HBRBACKROUND,(LONG)GetStockObject(WHITE_BROSH)));既然已要destory还需要SetCalssLong干什么?
DeleteObject((HBRUSH)SetClassLong(hwnd,GCL_HBRBACKROUND,(LONG)GetStockObject(WHITE_BROSH)));既然已要destory还需要SetCalssLong干什么?
解决方案 »
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