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VideoMixer.OSDItemAlphaSet method |
  
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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 |
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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 |
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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 |
