PacketReader Class that encapsulates reading packets from Fvwm. Packet Exceptions PipeReadError Indicates an error while reading the file descriptor from Fvwm. SynchronizationError Indicates that a partial, incomplete, or invalid packet was read from the Fvwm file descriptor. This function writes an error message to the module's standard error. Typically, this will get displayed on the system console.
Optional flag is a prefix to use when printing the message.
Print a debugging message on standard error. As above, msg must be a string. This dictionary also contains a reverse mapping. Types A dictionary of mappings between Packet Types as strings and their numeric values. This dictionary also contains a reverse mapping.