I'm trying to use the GTK+ library. I'm using Code::Blocks. I chose the project type as GTK+, have the complete package, and then started the project in the GTK+ folder. I selected the GTK folder when it told me to select the location, and selected the uppermost file (gtk+-bundle_3.6.4-20131201_win64). When I hit next, it says "The path you entered seems valid, but this wizard can't locate the following file: gtk.h" What did I do wrong?