Version: 3.0.0a5 (using KDE 3.1.9) Compiler: gcc version 3.2 OS: Linux (i686) release 2.4.19-4GB Some files like text/x-designer might have several different viewers / editors available. text/x-designer files can be edited both in text and graphical mode. An easy to reach switch should be nice. David Faure noticed that this is like the View->View Mode in konqueror and said "Makes sense (feel free to grab code from Konqueror :)"
I think this can be closed (unless I'm overlooking something) as KDevelop has an Open With context menu entry nowadays.