1,固定窗口大小,最大值为(600,400),最小值也为(600,400).
void CMainFrame::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI) { lpMMI->ptMaxTrackSize.x = 600; lpMMI->ptMaxTrackSize.y = 400; lpMMI->ptMinTrackSize.x = 600; lpMMI->ptMinTrackSize.y = 400; CFrameWnd::OnGetMinMaxInfo(lpMMI); }
2,关闭对话框和窗口:
其实，一般窗口的销毁可以用DestoryWindow(),对话框的销毁可以用EndDialiog().
EndDialog(IDOK);
DoModal()的返回值为IDOK,但不会执行用户定义的OnOK.
只要发送WM_CLOSE消息，就会有响应的函数处理的。
SendMessage(WM_CLOSE); PostMessage(WM_CLOSE); void CTestDialog::OnButton1() { GetParent()->DestroyWindow(); }
窗口和对话框一起关
PostMessage(WM_QUIT);
SendMessage(WM_QUIT);//不行
无模式对话框用DestroyWindow();
用EndDialog
你再打开原对话框就有问题
3,全局变量的使用:
C***App中定义一个CString
使用时
void CDlgDlg::OnButton2() { ((CDlgApp*)AfxGetApp())->str = "test"; }
不要忘记了包含文件
4,如何让dos程序开机自动运行并且不显示
自动运行好解决，写注册表run值，
vc+windows2000
把main改为winmain
5,清除自动密码历史记录
浏览器中:
工具->Internet选项->内容->点"自动完成(U)"按钮->清除密码
http://tzsvc.xiloo.com/skill/sys/clear.htm
SHDeleteKey(HKEY_CURRENT_USER,
_T("Software//Microsoft//Internet Explorer//IntelliForms"));
6,执行一个可执行程序
方法一:
ShellExecute(this->GetSafeHwnd(),"Open","f://he.txt",NULL,NULL,SW_SHOWNORMAL );
方法二:
PROCESS_INFORMATION pi; STARTUPINFO si; si.cb = sizeof(STARTUPINFO); si.lpReserved = NULL; si.lpDesktop = NULL; si.lpTitle = NULL; si.dwFlags = 0; si.cbReserved2 = 0; si.lpReserved2 = NULL; BOOL bres = CreateProcess(NULL,"test a.txt b.txt",NULL,NULL,false, NORMAL_PRIORITY_CLASS, NULL,NULL,&si,&pi); if(bres==false) { AfxMessageBox("CreateProcess failed"); } else { CloseHandle(pi.hThread); DWORD dwret=WaitForSingleObject(pi.hProcess, 1000*30); switch(dwret) { case WAIT_OBJECT_0: DWORD dwexitcode; bres = GetExitCodeProcess(pi.hProcess,&dwexitcode); TCHAR exitmsgbuf[1024]; if(bres) { wsprintf(exitmsgbuf,"exit code:%d",dwexitcode); } else wsprintf(exitmsgbuf,"exit code failed to return"); AfxMessageBox(exitmsgbuf); break; default: AfxMessageBox("exit for other reason");,
