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VideoPlayer.OSDItemAlphaSet method

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Sets the alpha channel transparency applied to the graphical item on the On-Screen-Display (OSD). The current value can be obtained through the VideoPlayer.OSDItemAlphaGet method.


For further details about the use of the embedded video player see the VideoPlayer class section.

For details about video clips rendering refer to the How to play video files through DirectShow tutorial.





[Visual Basic]

Public Function OSDItemAlphaSet (

nPlayerIndex as Int16,

nItemUniqueId as Int32,

nAlpha as Int16

) as enumErrorCodes



public enumErrorCodes OSDItemAlphaSet (

Int16 nPlayerIndex,

Int32 nItemUniqueId,

Int16 nAlpha




public: enumErrorCodes OSDItemAlphaSet (

Int16 nPlayerIndex,

Int32 nItemUniqueId,

Int16 nAlpha








Number representing the zero-based index of the player that will use the video player.


Unique identifier of the item returned by a previous call to one between the following methods: VideoPlayer.OSDItemPictureFileAdd, VideoPlayer.OSDItemBitmapAdd, VideoPlayer.OSDItemTextAdd, VideoPlayer.OSDItemOutlineTextAdd or VideoPlayer.OSDItemRectangleAdd


The alpha channel transparency expressed in percentage. Values can range from 0 (total opacity) to 100 (total transparency).




Return value






Negative value

An error occurred (see the LastError property for further error details)

enumErrorCodes.NOERROR (0)

The method call was successful.