Initialize PM subsystem in every thread, to enable sending messages to the GUI.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@23420 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/os2/thread.cpp

@@ -409,7 +409,10 @@ void wxThreadInternal::OS2ThreadStart(
     }
     else // do run thread
     {
+        HAB     vHab;
+        vHab = ::WinInitialize(0);
         dwRet = (DWORD)pThread->Entry();
+        ::WinTerminate(vHab);
 
 	// enter m_critsect before changing the thread state
 	pThread->m_critsect.Enter();