Some mice have more than 3 buttons. Although Xlib.h doesn't provide
definitions for these buttons, button 6 to 9 is reported through the
XButtonEvent struct.
This adds support for mapping actions to mouse button 6 to 9.
Conditional Compilation
-----------------------
The following is a listing of the conditional compilation switches that
are "not obvious." Excluded are hardware or OS identifiers (e.g. __ultrix),
header file include flags, and macros (e.g. ABS).
DEBUG
Turns on code that prints out error messages (specifically
protocol errors).
DEBUGGER
Turns on code to help debugging Help-on-item.
DEBUG_ICON_BOX
Turns on code that alters iconbox spacing to help debug iconbox.
(?)
DEBUG_RESOURCE_DATABASE
Turns on code that dumps out dtwm's local resource database
to aid in debugging resource problems.
DEBUG_SESSION_HINTS
If defined, the session hints property is left on the root
window after being read. Normally, it is deleted.
ICCC_COMPLIANT
This enables stricter ICCCM compliance. Specifically, some
clients didn't get WM_PROTOCOLS quite right.
INTEGRATION_TESTING_
Swaps assignment of black and white on wait state cursor as
a quick indicator of which client is showing the wait state.
LARGECURSORS
Allows cursors larger than 16x16.
MESSAGE_CAT
Enables message catalog code for local language support.
MOTIF_DEFAULT_ICON
Enables the default window icon with four buttons.
OLD_CODE
Vestigal code.
R2_COMPAT
Enables support for old clients that still pass window geometry
hint information in WM_NORMAL_HINTS.
UNMAP_ON_RESTART
All windows are unmapped on restart.
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