How to wait for events produced by non-Qt threads?

[Palpatine]

I inherited qthread and in the run() I delared two HANDLEs and asked an outside library to fill them with event(s) then run some non-qt threads that ends by emitting these events.

When I was using non-qt threads I can simply call waitformultipleobjects() to wait for the return of these outside threads, but now whenever I call waitformultipleobjects() the qthread crashes.

Any idea why this happens? I suspect it's because QApplication converts the two events to QEvents, but how am I supposed to handle these kind of QEvents? Or can I declare QEvents and hand QEvents to the outside thread as HANDLEs?

[wysota]

Does this QThread inheirted thread do something besides waiting for those native events?

[Palpatine]

nothing while waiting. actually I am using double buffer to receive pictures from a camera. Its sdk posts an event when a picture finishes to be sent to a buffer.
the working loop is like this:

for (int k = 0; k<8; k++)
	    {
		//double buffer
		ready=WaitForMultipleObjects(2,hEvents,false,2000);
		if (ready==WAIT_OBJECT_0)
		{
		    PCO_AddBufferEx(hCam,0,0,sBufNr1, xRes, yRes, 0x000e);
		    for (int l = 0; l<xRes * yRes; l++)bitMap[l+mapOffset] = data1[l];
		    Update();
		}
		else
		{
		    if(ready==(WAIT_OBJECT_0+1))
		    {
			PCO_AddBufferEx(hCam,0,0,sBufNr2, xRes, yRes, 0x000e);
			SetPort(false);
			for (int l = 0; l<xRes * yRes; l++)bitMap[l+mapOffset] = data2[l];
			Update();
		    }
		    else{
			PCO_SetRecordingState(hCam,0);
			abort = true;
		    }
		}
	    }

for (int k = 0; k<8; k++)
	    {
		//double buffer
		ready=WaitForMultipleObjects(2,hEvents,false,2000);
		if (ready==WAIT_OBJECT_0)
		{
		    PCO_AddBufferEx(hCam,0,0,sBufNr1, xRes, yRes, 0x000e);
		    for (int l = 0; l<xRes * yRes; l++)bitMap[l+mapOffset] = data1[l];
		    Update();
		}
		else
		{
		    if(ready==(WAIT_OBJECT_0+1))
		    {
			PCO_AddBufferEx(hCam,0,0,sBufNr2, xRes, yRes, 0x000e);
			SetPort(false);
			for (int l = 0; l<xRes * yRes; l++)bitMap[l+mapOffset] = data2[l];
			Update();
		    }
		    else{
			PCO_SetRecordingState(hCam,0);
			abort = true;
		    }
		}
	    }

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[wysota]

If nothing else then maybe you don't need it at all?