C / C++ / MFC

Le@rner wrote:

n my application i have generate so many threads but some time AfxBeginThread return NULL please tell me how can i identify why its return NULL.

//here CTest_Thread is class that is derived from CWinThread

int in_num=0;
std::map<int, CTest_Thread*>  assocs_th;

assocs_th[in_num] = (CTest_Thread*) AfxBeginThread( RUNTIME_CLASS(CTest_Thread), THREAD_PRIORITY_NORMAL, NULL,CREATE_SUSPENDED, NULL);

if (NULL != assocs_th[in_num])
{
	//assign values to thread class variables
	//assocs_th[in_num]->file_path = path;
	assocs_th[in_num]->ResumeThread();
     
     in_num++;
}
else
{				
	AfxMessageBox("Error");
}