关于(nID & 0xFFF0) == IDM_ABOUTBOX的思考
<br /> <br />以前经常会使用(nID & 0xFFF0) == IDM_ABOUTBOX这条语句,如下面这个常见的代码。<br /> <br />void CFileTransfersDlg::OnSysCommand(UINT nID, LPARAM lParam){ if ((nID & 0xFFF0) == IDM_ABOUTBOX) { CAboutDlg dlgAbout; dlgA