GTK+ is an acronym for the GNU image manipulation project (GIMP) toolkit. Spencer Kimball and Peter Mattis began work on GIMP in the summer of 1995. The first versions of GIMP relied on Motif, which ...
GTK+ is a runtime environment that applies to a number of operating systems. If you create an interface for a program, GTK runtime should be installed on the users’ computers so that the program runs.