RootTrace Code

Fixed cropping error by using base_image = image_ptr rather than CopyImage(image, base_image)

Changes where some images are released after main program execution to prevent errors

added cvCloseAllWindows to a form close event

Set all image pointers to NULL to start with (spotted when run in debug; release mode seems to set to null anyway..? But best to be sure)
Modified first image!=NULL check in onMouse - added { }
added != NULL check on cvReleaseImage s at end of init()

Added some tool tip help

Added coloured bg regions

Added Help! option to help menu. Will call compiled help file in the RootTrace folder (needs manually copying at the moment)

Started work on an online help system.

Can now view last image for doing background selection etc.
Can also undo regions using 'u' and painting over them.

Need to make sure this doesn't break anything further on...