如何调用一个外部程序，并等待其执行完成？

[balloy]

希望是用api直接实现的

[studentforever]

The WinExec function runs the specified application.
UINT WinExec(
LPCSTR lpCmdLine, // address of command line
UINT uCmdShow // window style for new application
);

The CreateProcess function creates a new process and its primary thread. The new process executes the specified executable file.

BOOL CreateProcess(
LPCTSTR lpApplicationName,
// pointer to name of executable module
LPTSTR lpCommandLine, // pointer to command line string
LPSECURITY_ATTRIBUTES lpProcessAttributes, // process security attributes
LPSECURITY_ATTRIBUTES lpThreadAttributes, // thread security attributes
BOOL bInheritHandles, // handle inheritance flag
DWORD dwCreationFlags, // creation flags
LPVOID lpEnvironment, // pointer to new environment block
LPCTSTR lpCurrentDirectory, // pointer to current directory name
LPSTARTUPINFO lpStartupInfo, // pointer to STARTUPINFO
LPPROCESS_INFORMATION lpProcessInformation // pointer to PROCESS_INFORMATION
);

[deadhorse]

用CreateProcess启动子进程,用WaitForSingleObject等待

PROCESS_INFORMATION pi;
CreateProcess(NULL, "cmd.exe", ..., &pi);
WaitForSingleObject(pi.hProcess WAIT_TIMEOUT);

[wiler]

同意楼上的

[webber84]

STARTUPINFO si={sizeof(STARTUPINFO)};
PROCESS_INFORMATION pi;
CreateProcess(NULL,"someapp.exe",NULl,NULL,false,0,NULL,NULL,&si,&pi);
WaitForSingleObject(pi.hProcess,INFINITE);
CloseHandle(pi.hProcess);
CloseHandle(pi.hThread);

[balloy]

哦，谢谢，能不能给个完整的例子？我不太会设置CreateProcess的那堆参数

[webber84]

上面不是吗？把第二个参数改成你的程序路径就是了。

[Angus_Fan]

gz

[balloy]

哦，谢谢，不好意思，还有一个问题，我想隐藏外部的应用程序，但这样写又不对，应该怎么写？谢谢：

STARTUPINFO si={sizeof(STARTUPINFO)};

PROCESS_INFORMATION pi;

si.wShowWindow = SW_HIDE;

CreateProcess(NULL, szCmdLine, NULL, NULL, false, 0, NULL, NULL, &si, &pi);
WaitForSingleObject(pi.hProcess, INFINITE);

[webber84]

STARTUPINFO si={sizeof(STARTUPINFO)};
si.wShowWindow = SW_HIDE;
si.dwFlags=STARTF_USESHOWWINDOW; //加上这句试试
PROCESS_INFORMATION pi;
CreateProcess(NULL,"someapp.exe",NULl,NULL,false,0,NULL,NULL,&si,&pi);
WaitForSingleObject(pi.hProcess,INFINITE);
CloseHandle(pi.hProcess);
CloseHandle(pi.hThread);

[balloy]

还是不行

[webber84]

那我也没什么好办法了。CreateProcess以后再FindWindow,
ShowWindow(SW_HIDE)吧。

[balloy]

啊，难道没有其他办法了吗？

[webber84]

看MSDN的说法si.wShowWindow = SW_HIDE;应该是可以的。我这里没有VC，你再试试看吧。

[balloy]

哦，我又试了一下，命名行程序是可以的，但我用vb编的另外一个程序就不行，呵呵，真实奇怪