IMediaSeeking::IsUsingTimeFormat method (strmif.h)
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The IsUsingTimeFormat method determines whether seek operations are currently using a specified time format.
Syntax
HRESULT IsUsingTimeFormat(
[in] const GUID *pFormat
);
Parameters
[in] pFormat
Pointer to a GUID that specifies the time format. See Time Format GUIDs.
Return value
Returns an HRESULT value. Possible values include the following.
| Return code | Description |
|---|---|
|
The specified format is not the current format. |
|
The specified format is the current format. |
|
Not implemented. |
|
NULL pointer argument. |
Remarks
This method is slightly more efficient than the IMediaSeeking::GetTimeFormat method, because it does not require copying the GUID.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | strmif.h (include Dshow.h) |
| Library | Strmiids.lib |