怎么让WINEXEC函数阻塞？？

[cniao]

就是让他结束后程序再进行下一步。
比如：
...
winexec("dir c:\/s",sw_hide);
MessageBox (....)
...


等DIR把所有的文件都列出，命令结束后，再进行下一步的MSGBOX。

[masterz]

use createprocess

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");
}
CloseHandle(pi.hProcess);
}

[free_card]

在这里提供了一个名为Wait的函数，它会为你完成上面的功能。实现的思想
是在启动进程后等待其结束，由于进程是一种资源，而资源的句柄在WIN32中
可以作为核心量使用。你可以使用WaitForSingleObject等待核心量状态改变
为有信号状态。对进程来讲当进程结束时其状态转变为有信号。

在本例中使用了一个单独的线程来启动进程并等待结束。

Wait()
BOOL Wait(CString szCmdLine)
{
LPTHREADINFO pThreadInfo = new THREADINFO;
CEvent *pThreadEvent = new CEvent(FALSE, TRUE);
ASSERT_VALID(pThreadEvent);
if(pThreadInfo)
{
pThreadInfo->pTermThreadEvent = pThreadEvent;
pThreadInfo->strPathName = szCmdLine;

AfxBeginThread(LaunchAndWait, pThreadInfo);
WaitForSingleObject(pThreadEvent->m_hObject, INFINITE);
return TRUE;
}
return FALSE;
}

LaunchAndWait()
UINT LaunchAndWait(LPVOID pParam)
{
LPTHREADINFO pThreadInfo = (LPTHREADINFO) pParam;
PROCESS_INFORMATION stProcessInfo;
if(LaunchApplication(pThreadInfo->strPathName, &stProcessInfo))
{
HANDLE hThreads[2];
hThreads[0] = pThreadInfo->pTermThreadEvent->m_hObject;
hThreads[1] = stProcessInfo.hProcess;
DWORD dwIndex = WaitForMultipleObjects(2, hThreads, FALSE, INFINITE);
CloseHandle(stProcessInfo.hThread);
CloseHandle(stProcessInfo.hProcess);
pThreadInfo->pTermThreadEvent->SetEvent();
if(pThreadInfo)
delete pThreadInfo;
}
else
pThreadInfo->pTermThreadEvent->SetEvent();
return 0;
}


LaunchApplication()
BOOL LaunchApplication(LPCTSTR pCmdLine, PROCESS_INFORMATION *pProcessInfo)
{
STARTUPINFO stStartUpInfo;

memset(&stStartUpInfo, 0, sizeof(STARTUPINFO));

stStartUpInfo.cb = sizeof(STARTUPINFO);

stStartUpInfo.dwFlags = STARTF_USESHOWWINDOW;
stStartUpInfo.wShowWindow = SW_SHOWDEFAULT;

return CreateProcess(NULL, (LPTSTR)pCmdLine, NULL, NULL, FALSE,
NORMAL_PRIORITY_CLASS, NULL,
NULL, &stStartUpInfo, pProcessInfo);
}