dirs: openbox - core of the WM render - librender, rendering routines for the WM and for apps parser - libparser, for parsing config files Beware the Client.transient_for. It can be set to a !NULL value of TRAN_GROUP, which is not a valid pointer. You must ALWAYS check for TRAN_GROUP before following transient_for. However if it is transient for the group, this excludes other windows whom are transient for the group, and windows which are children of the window (infinite loops would result)! When using coordinates/sizes of windows, make sure you use the right area. The Client.area rect is the reference point and size of the *CLIENT* window. This value is not what you see in any shape or form, and gravity is applied to it to translate it into what you see. The Client.frame.area is the actual position and size of the entire frame. This is usually the value you want to use, unless you are in client.c (probably) and adjusting/using the position or size from the client's perspective. Indentation ----------- For openbox, we aim to have consistent coding style. Some, but surely not all, guidelines: * use 4 space indents * tabs should not appear in source files * functions should have the opening and closing braces on their own lines * most other constructs should have braces on the same line as the statement * else appears on a new line, just like an if * when in doubt look at the rest of the source * vim users can use "set expandtab tabstop=4 shiftwidth=4 softtabstop=4" for some of this