Description

Finds and cuts of the margins on a page based on the pixel values.

Syntax

RetVal = [BIDIB.] CropDIBMargins hDib, byGrayThreshold, bMarginIsBlack

Parameters

hDib

LONGLONG

Handle to the image.

byGrayThreshold

Integer

The grayscale level that defines what is considered page content. If bMarginIsBlack is set to FALSE, any pixel that is darker than or equal to byGrayThreshold is considered to be page content inside the margins.

If bMarginIsBlack is set to TRUE, any pixel that is lighter than byGrayThreshold is considered to be page content inside the margins.

The value of 0 means black, 255 means white.

bMarginIsBlack

Boolean

Set to TRUE if the page content is lighter than the page, otherwise set to FALSE.

Return Value

On success, returns a handle to the new DIB. The old DIB is not freed. On error, returns NULL. Use the BitmaniError function to get the error code.