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VideoMixer.OSDItemPictureMemoryChange method

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Remarks

 

Changes the picture for an existing 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.OSDItemPictureMemoryChange (

nMixerUniqueId as Long,

nItemUniqueId as Long,

pBuffer as Variant,

nBufferLength as Long

) as enumErrorCodes


 

[C++]

short control.VideoMixer.OSDItemPictureMemoryChange (

long nMixerUniqueId,

long nItemUniqueId,

const VARIANT FAR& pBuffer,

long nBufferLength

);


 

Parameter

Description

 

 

nMixerUniqueId

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

nItemUniqueId

Unique identifier of item returned by a previous call to the VideoMixer.OSDItemPictureMemoryAdd method

pBuffer

Variant parameter containing the pointer to the picture file previously loaded in memory.

Accepted picture formats are BMP, GIF, JPEG and PNG.

nBufferLength

Length in bytes of the given buffer

 

 

 

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