While there is no one step method to do this, definitely you can
use MetaDraw for cropping images.
Cropping the image in MetaDraw is be done by setting 4 properties
( ClipLeft, ClipTop, ClipWidth, ClipHeight ) to specify the location
of the top left corner, and the height and width of the crop area.
Potentially you might allow a user to draw a rectangle
around the desired area and use this to determine the crop boundaries.
You would then set another property ( ExportOptions) to specify that when
reading the image it should be cropped to those specifications.
At this point you can set the Picture property to itself.
This would replace the original image with the cropped image.
Or you could save the cropped image to a file or database using
the SavePicture method.