Window manager

In Windows and Mac OS X the window manager is tied into the OS. That's not the case for Linux or BSD. Window Maker is the recommended window manager for GNUstep, but a standard feature-set is needed. GNUstep-based applications have additional needs beyond traditional window managers, like handling the dock icon or the menus. Collecting the requirements here will lead to a specification, so any window manager can clearly state whether or not it is GNUstep-compliant.

Backend WM Attributes

Headers/x11/XGServerWindow.h defines

 unsigned long flags
 unsigned long window_style
 unsigned long window_level
 unsigned long reserved
 Pixmap miniaturize_pixmap;    // pixmap for miniaturize button
 Pixmap close_pixmap;    // pixmap for close button.
 Pixmap miniaturize_mask;    // miniaturize pixmap mask
 Pixmap close_mask;      // close pixmap mask
 unsigned long extra_flags;