gitk: Enable mouse horizontal scrolling in diff pane

Currently it's required to hold Shift and scroll up and down to move
horizontally. Listen to Button-6 and Button-7 events too to make
horizontal scrolling handier with touchpads and some mice.

Signed-off-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
1 file changed
tree: 3bf887ed5dd715e7657d695e56b9148de2113d74
  1. po/
  2. .gitignore
  3. gitk
  4. Makefile