LEADTOOLS Multimedia API Help
| LEADTOOLS Multimedia API Help > LEADTOOLS Multimedia Features > Multimedia Function References > IltmmTVTuner Interface > IltmmTVTuner::get_SignalPresent |
#include "ltmm.h"
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C Syntax |
HRESULT IltmmTVTuner_get_SignalPresent(pTV, pVal) |
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C++ Syntax |
HRESULT get_SignalPresent(pVal) |
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IltmmTVTuner *pTV; |
/* pointer to an interface */ |
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long *pVal; |
/* pointer to a variable */ |
Gets a value that indicates whether a signal is present on the current channel.
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Parameter |
Description |
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pTV |
Pointer to an IltmmTVTuner interface. |
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pVal |
Pointer to a variable to be updated with a value that indicates whether a signal is present on the current channel. Possible values are: |
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Value |
Meaning |
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ltmmTUNER_HASNOSIGNALSTRENGTH |
The signal strength cannot be determined now. |
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ltmmTUNER_NOSIGNAL |
No signal detected. |
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ltmmTUNER_SIGNALPRESENT |
Signal detected. |
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. |
Comments
For more detailed information, refer to the Microsoft documentation for IAMTuner::SignalPresent.
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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Elements: |
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Topics: |
Example
For a C example, refer to IltmmTVTuner::get_SignalPresent Example for C.
For a C++ example, refer to IltmmTVTuner::get_SignalPresent Example for C++.
