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Gets a value that indicates whether a signal is present on the current channel.
#include "ltmm.h"
| Language | Syntax |
|---|---|
| C | HRESULT IltmmTVTuner_get_SignalPresent(pTV, pVal) |
| C++ | HRESULT get_SignalPresent(pVal) |
Pointer to an IltmmTVTuner interface.
Pointer to a variable to be updated with a value that indicates whether a signal is present on the current channel. Possible values are:
| Value | Meaning |
|---|---|
| ltmmTUNER_HASNOSIGNALSTRENGTH | The signal strength cannot be determined now. |
| ltmmTUNER_NOSIGNAL | No signal detected. |
| ltmmTUNER_SIGNALPRESENT | Signal detected. |
| Value | Meaning |
|---|---|
| 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. |
For more detailed information, refer to the Microsoft documentation for IAMTuner::SignalPresent.
Win32, x64.
| Language | Example |
|---|---|
| C | IltmmTVTuner::get_SignalPresent |
| C++ | IltmmTVTuner::get_SignalPresent |
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