IMSVidPlayback::get_Length method (segment.h)
[The feature associated with this page, Microsoft TV Technologies, is a legacy feature. Microsoft strongly recommends that new code does not use this feature.]
The get_Length method retrieves the length of the playback source.
Syntax
HRESULT get_Length(
[out] long *lLength
);
Parameters
[out] lLength
Pointer to a variable that receives the length. The units for the returned value are determined by the current position mode.
| Position Mode | Returned Value |
|---|---|
| FrameMode | Frame number |
| TenthsSecondsMode | Hundredths of seconds |
To set the position mode, call IMSVidPlayback::put_PositionMode.
Return value
The method returns an HRESULT. Possible values include the following.
| Return code | Description |
|---|---|
|
The source does not support getting the length. |
|
NULL pointer argument. |
|
The graph is not built. Call the Build or View method on the Video Control. |
|
The method succeeded. |
Note��The value ERROR_INVALID_STATE is converted to an HRESULT with the HRESULT_FROM_WIN32 macro.
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Remarks
Call the IMSVidCtl::Build or IMSVidCtl::View method before calling this method.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows�XP [desktop apps only] |
| Minimum supported server | None supported |
| Target Platform | Windows |
| Header | segment.h (include Msvidctl.h) |