Analysis of information sources in references of the Wikipedia article "X Window System protocols and architecture" in English language version.
The ICCCM is unbelievably dense, it must be followed to the last letter, and it still doesn't work. ICCCM compliance is one of the most complex ordeals of implementing X toolkits, window managers, and even simple applications. It's so difficult, that many of the benefits just aren't worth the hassle of compliance.
libXi - library for the X Input Extension
X11 does not permit the read back of all information that may have been stored in the server (for example, the X11 protocol does not permit querying the GC state). This makes modularity somewhat harder to accomplish.
ICCCM is about as horrible as the [Unix Hater's Handbook's] authors describe, but that's hard to notice these days because modern toolkits and window managers do a pretty good job of hiding the ugliness from applications.
X11 does not permit the read back of all information that may have been stored in the server (for example, the X11 protocol does not permit querying the GC state). This makes modularity somewhat harder to accomplish.
The ICCCM is unbelievably dense, it must be followed to the last letter, and it still doesn't work. ICCCM compliance is one of the most complex ordeals of implementing X toolkits, window managers, and even simple applications. It's so difficult, that many of the benefits just aren't worth the hassle of compliance.
