I don't have any solution to this particular problem, but I want to caution you. Please be careful, there are a few windowmanagers around that do not allow automatic (re)sizing / "iconification" of windows at all (and for good reasons too). Like my current windowmanager - ion. Please make sure that you do not make your programs depend on the windows being a particular size, at least don't if you don't control the environment the programs are running in.