DirectMusic in Visual Studio 2010 on a 64 bit Windows 7

Question

I Have a Visual Studio 2010 VB programme using DirectX 11 DirectMusic, for playing MIDI audio files which I created on a Windows XP 32 bit machine, I have now moved it to a Windows 7 64 bit machine.  The programme does run OK but the problem I have
though is it takes at least 2 minutes to load. It loads straight away on the XP 32 bit machine.   In debug stepping through it is the get port information of the output port that is delaying it, code below
Do
dwPortCount = dwPortCount + 1
COutPort.GetPortInfo(dwPortCount, PortInfo)
Loop While 0 = (PortInfo.dwFlags And DMUS_PC.SOFTWARESYNTH)
'Debug.WriteLine("Selected output port: {0}", PortInfo.szPortDescription)
COutPort.SetPortParams(0, 0, 0, [SET].REVERB Or [SET].CHORUS, 44100)
COutPort.ActivatePort(PortInfo)
It goes through this loop three times and each time it stops at the line "COutPort.GetPortInfo(dwPortCount, PortInfo)" for quite a while, or the third time after a wait it does continue and loads the form.
Any Ideas how to sort this problem?
David

Answer 1

Hi Dave-OLW,
As your issue is related to DirectX 11, We have a specilized forum for disscussing the problems about DirectX 11:http://xboxforums.create.msdn.com/forums/76.aspx
You could post it in the forum for better supports, Thanks.
Best regards,
Youjun Tang
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