运行ShellExecuteEx后获取线程退出代码

Question

How can the exit code of the main thread be retrieved, after having run ShellExecuteEx() in asychronous mode?

The process exit code can simply be retrieved as follows:

SHELLEXECUTEINFO execInfo;
execInfo.cbSize = sizeof(SHELLEXECUTEINFO);
execInfo.fMask = SEE_MASK_NOASYNC;

ShellExecuteEx(&execInfo);

/* Get process exit code. */
DWORD processExitCode;
GetExitCodeProcess(execInfo.hProcess, &processExitCode);

But how can the exit code of the main thread be retrieved? What should be passed to GetExitCodeThread()?

Answer 1

主线程的退出代码等于进程IMHO的退出代码。

Answer 2

In order to get the exit code of the primary process thread - one has to obtain its HANDLE . Unfortunately ShellExecuteEx doesn't return you this (it returns only the HANDLE of the newly created process).

One could also enumerate all the threads in a particular process and open their handles ( OpenThread ). Thus, you could create a process in a "suspended" state, get the handle of its only thread (which didn't start execution yet), and then go on.

Alas, ShellExecuteEx neither allows you to create a new process in a suspended state.

So that I don't see a clean way to achieve what you want. I'd suggest the following:

1. Why would you want the exit code of the primary thread anyway? Perhaps the exit code of the process will be enough?
2. Consider using CreateProcess . It has the needed functionality.
3. Some dirty tricks may help, like injecting DLLs into the newly created process (hooking) and etc.