The sample DirectX work properly on the macines where it failed. In fact my customer have tested it on 5 machines, and it only worked on one. DxDiag work on all of them.
The getPresentParams return:
MultiSampleQuality: 0
PresentationInterval: Default
FullScreenRefreshRateInHz:
PresentFlag: None
AutoDepthStencilFormat: Unknown
EnableAutoDepthStencil: False
Windowed: True
DeviceWindowHandle: 0
DeviceWindow:
SwapEffect: Discard
MultiSample: None
BackBufferCount: 0
BackBufferFormat: Unknown
BackBufferHeight: 0
BackBufferWidth: 0
ForceNoMultiThreadedFlag: False
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by: PaulHewsPosted on 2008-11-13 at 06:43:02ID: 22950030
A couple of thoughts just thrown out there.
ect3D
-Do the samples from the DirectX SDK work properly? Look in <DirectX SDK install folder>\Samples\Managed\Dir
-What does the call to getPresentParams return?