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VideoMixer.OSDItemAlphaSet method

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Remarks

 

Sets the alpha channel transparency applied to the graphical item on the On-Screen-Display (OSD).

 

For further details about the use of the embedded video mixer see the VideoMixer object section.

For details about video mixing/blending refer to the How to use the video mixer tutorial.

 

 

Syntax

 

[Visual Basic]

control.VideoMixer.OSDItemAlphaSet (

nMixerUniqueId as Long,

nItemUniqueId as Long,

nAlpha as Integer

) as enumErrorCodes


 

[C++]

short control.VideoMixer.OSDItemAlphaSet (

long nMixerUniqueId,

long nItemUniqueId,

short nAlpha

);


 

Parameter

Description

 

 

nMixerUniqueId

Unique identifier of the video mixer returned by a previous call to the VideoMixer.Create method

nItemUniqueId

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

nAlpha

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

 

 

 

Return value

 

Value

Meaning

 

 

Negative value

An error occurred, check the LastError property value in order to get the error code

enumErrorCodes.ERR_NOERROR (0)

The method call was successful