Epson BT-2000 Developers Guide - Page 82

If a registered buffer region is not secured in the application, an error log is output

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 Important points  Only necessary when using setPreviewCallbackWithBuffer. Buffers are automatically secured for setPreviewCallback and setOneShotPreviewCallback.  If the buffer size you register is smaller than the image data, null is returned for data.  If a registered buffer region is not secured in the application, an error log is output when addCallbackBuffer is executed. Errors and exceptions do not occur. MOVERIO Pro Developer's Guide (Rev.1.0) 78

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MOVERIO Pro Developer's Guide (Rev.1.0)
78
Important points
Only necessary when using setPreviewCallbackWithBuffer. Buffers are
automatically secured for setPreviewCallback and setOneShotPreviewCallback.
If the buffer size you register is smaller than the image data, null is returned for
data.
If a registered buffer region is not secured in the application, an error log is output
when addCallbackBuffer is executed.
Errors and exceptions do not occur.