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Determines whether a specific playback rate is supported or not.
#include "ltmm.h"
| Language | Syntax |
|---|---|
| C | HRESULT IltmmPlay_IsRateSupported(pPlay, Rate, pResult) |
| C++ | HRESULT IsRateSupported(Rate, pResult) |
Pointer to an IltmmPlay interface.
The playback rate for which to check.
Pointer to a variable to be updated with a value that indicates whether the specified playback rate is supported. Possible values are:
| Value | Description |
|---|---|
| VARIANT_TRUE | The rate is supported. |
| VARIANT_FALSE | The rate is not supported. |
| 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. |
The playback rate is expressed as a ratio of the normal playback speed. For example, use 1.0 for normal speed, 2.0 for double speed, and 0.5 for half speed.
Win32, x64.
| Language | Example |
|---|---|
| C | IltmmPlay::IsRateSupported |
| C++ | IltmmPlay::IsRateSupported |
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