VC雕虫小技集的详细介绍

VC雕虫小技集(三)

何志丹

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");,