kinterprocesswindowing, drop it or not?

[Aurélien Gâteau]

Hi,

I started working on the KInterProcessWindowing (kiw) framework, which is 
expected to go into tier2 because it depends on KWindowSystem (tier1).

kiw is made of two set of files:

kmessagebox_kiw.*: KMessageBox functions to show message boxes on top of 
foreign windows. Depends on KWindowSystem.

usertimestamp.*: Two functions which used to be in KApplication.

kmessagebox_kiw.* depends on KWindowSystem because it uses one function: 
KWindowSystem::setMainWindow(), which I proposed a fix for [1]. That got me 
thinking: Since KWindowSystem::setMainWindow() will now (assuming my request 
is merged) be effectively 4 lines of pure Qt code, would it be better to just 
duplicate those 4 lines and move kmessagebox_kiw.* to kwidgetsaddons? This 
would make it easier to reduce the massive code duplication between 
kwidgetsaddons/src/kmessagebox.* and kmessagebox_kiw.*.

Furthermore, if usertimestamp.* were moved to KWindowSystem, then the whole 
kiw framework could be dropped.

What do you think?

Aurélien

[1]: http://git.reviewboard.kde.org/r/112685/