From Bertrand: - Set slider's background the same color than its parent frame. - Added protection in the case of background pixmap is not present.
From Bertrand:
- Set slider's background the same color than its parent frame.
- Added protection in the case of background pixmap is not present.


git-svn-id: ecbadac9c76e8cf640a0bca86f6bd796c98521e3@13377 27541ba8-7e3a-0410-8455-c3a389f83636

bbannier/ROOT,bbannier/ROOT,dawehner/root,bbannier/ROOT,dawehner/root,dawehner/root,bbannier/ROOT,bbannier/ROOT,dawehner/root,dawehner/root,bbannier/ROOT,dawehner/root,dawehner/root,dawehner/root,bbannier/ROOT