Accusoft ImagXpress 13
CB Event
AccusoftImagXpress13 ActiveX DLL > ImagXpress Object : CB Event
Specifies which image buffer is being processed.
An enumIXEVENT_CB_ID value which determines the type of call back.
Description
This event is raised several different times in response to the user initiating a LoadCB method to load an image via Call Back.
Syntax
Visual Basic
Public Event CB( _
   ByVal ID As Integer, _
   ByVal CBID As enumIXEVENT_CB_ID _
)
Parameters
ID
Specifies which image buffer is being processed.
CBID
ValueDescription
CBID_CLOSEThe decompressor completed decompressing the data and is notifying the user to perform any clean-up such as file closing, etc.
CBID_OPENUser should open data sources and do any memory allocation/initialization to this.
CBID_READThe decompressor is requesting more data, which the user should supply through the WriteCBData and WriteCBDataPtr methods.
An enumIXEVENT_CB_ID value which determines the type of call back.
Remarks

For read events, return non-zero values as long as there is more data available. When all the data has been presented, return zero to signal the load process to finish.

Note: If the CBID_READ event is issued after a call to WriteCBData or WriteCBDataPtr with a data length of 0, then additional calls to WriteCBData or WriteCBDataPtr with a data length of 0 may be necessary.

See Also

ImagXpress Object  | ImagXpress Members  | LoadCB Method  | Loading

 

 

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