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