IAMTimeline::GetCountOfType method
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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.]
Note
[Deprecated. This API may be removed from future releases of Windows.]
The GetCountOfType method retrieves the number of objects of the specified type that are contained in a specified group and all of its children.
Syntax
HRESULT GetCountOfType(
long Group,
long *pVal,
long *pValWithComps,
TIMELINE_MAJOR_TYPE MajorType
);
Parameters
-
Group
-
Index number of the group for which to retrieve the count.
-
pVal
-
Receives the number of objects of the specified type contained in the group and all of its virtual tracks, recursively.
-
pValWithComps
-
Receives the count returned in pVal plus the number of compositions searched, including this one.
-
MajorType
-
Member of the TIMELINE_MAJOR_TYPE enumerated type, specifying the type of object to count.
Return value
Returns one of the following HRESULT values.
| Return code | Description |
|---|---|
|
Success. |
|
Invalid group number. |
|
NULL pointer argument. |
Remarks
Calling this method is equivalent to calling IAMTimelineComp::GetCountOfType on the specified group. See the Remarks section of that method for more information.
Typically, an application will not call this method. It is called internally by the render engine.
Note
The header file Qedit.h is not compatible with Direct3D headers later than version 7.
Note
To obtain Qedit.h, download the Microsoft Windows SDK Update for Windows Vista and .NET Framework 3.0. Qedit.h is not available in the Microsoft Windows SDK for Windows 7 and .NET Framework 3.5 Service Pack 1.
Requirements
| Requirement | Value |
|---|---|
| Header |
|
| Library |
|
See also