My latest foray into X windowing got me stuck in a couple places. I'll give a brief overview today of my issues and resolutions, and perhaps if I find some time I'll go through in more detail later.
Issue: Finding a call to locate the focused window.
Resolution: XGetInputFocus
Issue: Finding a call to get the window title.
Resolution1: XGetWindowProperty
Resolution2: XFetchName (much much easier)
Issue: Window title is null?
Reason: There appears to be an invisible window overlayed on it. Often "FocusProxy".
Resolution: XQueryTree to find the parent. This resolution is iffy.
Issue: Finding a call to get a process ID from a window.
Resolution: XGetWindowProperty -> _NET_WM_PID (though it's not always set)
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