如何启动一个程序，直到它启动完成?

dracoo 2004-08-23 11:00:39

VC++开发的应用程序，需要与一个外部程序通信，因此当外部程序未启动时，则由应用程序来启动它，然后进行通信。那么怎么判断外部程序是否已启动完毕？只能用Sleep()来等待吗？

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freefalcon 2004-08-23

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摘自msdn

The WaitForInputIdle function enables a thread to suspend its execution until the specified process has finished its initialization and is waiting for user input with no input pending. This can be useful for synchronizing a parent process and a newly created child process. When a parent process creates a child process, the CreateProcess function returns without waiting for the child process to finish its initialization. Before trying to communicate with the child process, the parent process can use WaitForInputIdle to determine when the child's initialization has been completed. For example, the parent process should use WaitForInputIdle before trying to find a window associated with the child process.

qwertasdfg123 2004-08-23

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要外部程序关闭后才触发

真的？

它是等待一个进程启动完成。

lemon520 2004-08-23

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WaitForInputIdle(hProcess,INFINITE);要外部程序关闭后才触发?????
你确定？
MSDN上可不是这么说的

寒雪叔叔 2004-08-23

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哦，你是要等程序启动完毕还是等它运行结束，如果是等他运行结束呢就是上面这个程序，如果是等它启动完成，那就更好办了，在那个程序启动完成时发送一个消息广播，这个程序收到消息就知道了嘛

我也顺便问一下，好久没有上CSDN网了，都有近万分没有送出去了，最近上来不知道怎么发贴了，说要上小类里去发贴，但怎么进小类呢，我只能进到推荐类里去，如C/C++社区等.???????????????????????????????????

寒雪叔叔 2004-08-23

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SHELLEXECUTEINFO ShExecInfo = {0};
ShExecInfo.cbSize = sizeof(SHELLEXECUTEINFO);
ShExecInfo.fMask = SEE_MASK_NOCLOSEPROCESS;
ShExecInfo.hwnd = NULL;
ShExecInfo.lpVerb = NULL;
ShExecInfo.lpFile = "c:\\MyProgram.exe";
ShExecInfo.lpParameters = "";
ShExecInfo.lpDirectory = NULL;
ShExecInfo.nShow = SW_SHOW;
ShExecInfo.hInstApp = NULL;
ShellExecuteEx(&ShExecInfo);
WaitForSingleObject(ShExecInfo.hProcess, INFINITE);

这样就可以了，我也顺便问一下，好久没有上CSDN网了，都有近万分没有送出去了，最近上来不知道怎么发贴了，说要上小类里去发贴，但怎么进小类呢，我只能进到推荐类里去，如C/C++社区等.???????????????????????????????????

freefalcon 2004-08-23