Returns always #t.
Returns #t iff the Xlib extension is linked together with the X11 Release 5 Xlib or later versions of the Xlib.
Returns #t iff the Xlib extension is linked together with the X11 Release 6 Xlib or later versions of the Xlib.
(get-default display program option)
See XGetDefault. program and option are strings or symbols. Returns a string of #f if the option does not exist for the specified program.
See XResourceManagerString. Returns a string or #f if the RESOURCE_MANAGER property does not exist on the root window.
See XParseGeometry. Returns a list of six elements: two booleans indicating whether x or or y are negative and four integers (x, y, width, and height). Each of the elements can be #f to indicate that the respective value was not found in the string.
(parse-color colormap string)
See XParseColor. Returns an object of type color or #f if XParseColor fails.
(store-buffer display bytes buffer)
See XStoreBuffer. bytes is a string; buffer is an integer between 0 and 7.
(store-bytes display bytes)
See XStoreBytes. bytes is a string.
(fetch-buffer display buffer)
See XFetchBuffer. buffer is an integer between 0 and 7. Returns a string.
See XFetchBytes. Returns a string.
(rotate-buffers display delta)
See XRotateBuffers. delta is an integer (the amount to rotate the buffers).
(with object . body-forms)
with is a macro. object must be a drawable, a graphics context, or a font. The body-forms are evaluated in order; with returns the value of the last body-form.
Within the scope of the with, the first call to an accessor
function accessing object (such as window-attribute
or font-attribute) causes the result of the corresponding
Xlib function to be retained in a cache; subsequent calls just return
the value from the cache.
Likewise, calls to Xlib functions for mutator functions modifying
object (such as set-window-attribute!)
are delayed until exit of the with body or until an accessor
function is called and the cached data for this accessor function
has been invalidated by the call to a mutator function.