Detects & set to White, margins consisting of black color around a GdPicture image. 

This function has not the same Behavior than the CropBlackBorders() function: The black borders are not removed but set to blank. Therefore, the image dimensions are kept.

public GdPictureStatus CropBlackBordersEx(
    int ImageID
);

Public Function CropBlackBordersEx(
    ByVal ImageID As Integer
) As GdPictureStatus

A member of the GdPictureStatus enumeration.