Hi, we're developing a Java project that requires communication with the operating system's window management in order to perform basic operations on windows such as maximizing, minimizing, hiding and so forth. This interface has already been implemented for the Win32 API, and we are now targeting UNIX/Linux platforms running X11. The problem is that there is very few documentation on the web regarding X11 programming and even less documentation on how to interact with window managers in a way that is independent of the actual window manager implementation. As far as I understand, the NetWM standard is an effort to allow just that, is that correct? I have already started work on that wrapper and played around with sending client messages, some of which are successfully interpreted by the window manager I am running (GNOME's Metacity), and some are not. For example, while I am able to send minimize hints to X11 (e.g. via XIconifyWindow), there doesn't seem to be a way to reverse that state to normal. I tried sending a WM_CHANGE_STATE client message with the NormalState flag set but that didn't work. I have since started to read source codes of various window managers but I can't seem to figure out how you do that. Meanwhile, I doubt that this whole NetWM standard thing is really what we need. I feel like I am starting to rewrite functionality the window manager is supposed to implement. I only want to trigger that behaviour via a standard API, not rewrite it from scratch. For example, when I am sending _NET_WM_STATE messages, are these messages interpreted by the window manager at all or are they directly interpreted by the X11 server? So, maybe I'm just completey targeting this issue the wrong way? Can you give me (being new to X11 programming) some advice on how to tackle this problem? Thanks in advance. Best regards, Matthias