#include "ltmm.h"
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C Syntax |
HRESULT IltmmCapture_IsPreviewTabSupported(pCapture, Source, Tap, pVal) |
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C++ Syntax |
HRESULT IsPreviewTabSupported(Source, Tap, pVal) |
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IltmmCapture *pCapture; |
/* pointer to an interface */ |
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long Source; |
/* source type */ |
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long Tap; |
/* tap type */ |
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VARIANT_BOOL *pVal; |
/* pointer to a variable */ |
Determines whether a specific preview tap for some preview source is available or not.
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Parameter |
Description |
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pCapture |
Pointer to an IltmmCapture interface. |
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Source |
The preview source for which to determine whether a preview tap is supported. Possible values are: |
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Value |
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ltmmCapture_Preview_VideoAndAudio |
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ltmmCapture_Preview_Video |
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ltmmCapture_Preview_Audio |
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Tap |
The preview tap type for which to determine whether it is supported. Possible values are: |
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Value |
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ltmmCapture_PreviewTap_Source |
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ltmmCapture_PreviewTap_Processors |
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ltmmCapture_PreviewTap_Compressor |
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pVal |
Pointer to a variable to be updated with a value that indicates whether the specified source and tap are supported. Possible values are: |
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Value |
Meaning |
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VARIANT_TRUE |
Preview tap supported. |
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VARIANT_FALSE |
Preview tap not supported. |
Returns
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S_OK |
The function was successful. |
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<> S_OK |
An error occurred. Refer to the Error Codes or the HRESULT error codes in the DirectShow documentation. |
Required DLLs and Libraries
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LTMM For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application. |
Win32, x64
See Also
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Topics: |
Example
For a C example, refer to IltmmCapture::IsPreviewTapSupported Example for C.
For a C++ example, refer to IltmmCapture::IsPreviewTapSupported Example for C++.