Question

I need to be able to suspend and resume the main thread in a Windows C++ app. I have used

handle = GetCurrentThread();
SuspendThread(handle);

and then where is should be resumed

ResumeThread(handle);

while suspending it works, resuming it does not. I have other threads that are suspended and resumed with no problems, is there something that is different with the main thread.

I have done a lot of threading working in C# and Java but this is the first time I have done any in C++ and I’m finding it to be quite a bit different.

Answer 1

Are you using the “handle” value you got from GetCurrentThread() in the other thread? If so that is a psuedo value. To get a real thread handle either use DuplicateHandle or try

HANDLE hThread = OpenThread(THREAD_ALL_ACCESS, FALSE, GetCurrentThreadId());