|Microsoft DirectX 9.0|
This topic applies to Windows XP Service Pack 1 only.
The ActivateButton method activates the selected menu button.
This method takes no parameters.
Use this method to activate a button that has been selected through the SelectLeftButton, SelectLowerButton, SelectUpperButton, or SelectRightButton method.
If the property fails, Err.Number may be set to one of the following values.
|E_UNEXPECTED||Unspecified error. Possible reason is that
the graph has not been built.
|VFW_E_DVD_INVALIDDOMAIN||The DVD Navigator filter is not in a menu domain.|
|VFW_E_DVD_NO_BUTTON||No button is currently selected.|
|VFW_E_DVD_OPERATION_INHIBITED||The operation is inhibited by user operation (UOP) control.|
The buttons checked by this method are the MSVidWebDVD screen buttons, not the surrounding HTML page or form buttons.
The following table shows the Annex J command name to which this method name corresponds, and the domains in which this method is valid.
|Annex J Command Name||Valid Domains|