AllPlanes(3X11) XLIB FUNCTIONS AllPlanes(3X11)NAME
AllPlanes, BlackPixel, WhitePixel, ConnectionNumber,
DefaultColormap, DefaultDepth, XListDepths, DefaultGC,
DefaultRootWindow, DefaultScreenOfDisplay, DefaultScreen,
DefaultVisual, DisplayCells, DisplayPlanes, DisplayString,
XMaxRequestSize, XExtendedMaxRequestSize, LastKnownRe-
questProcessed, NextRequest, ProtocolVersion, ProtocolRe-
vision, QLength, RootWindow, ScreenCount, ScreenOfDisplay,
ServerVendor, VendorRelease - Display macros and functions
SYNTAX
AllPlanes
BlackPixel(display, screen_number)
WhitePixel(display, screen_number)
ConnectionNumber(display)
DefaultColormap(display, screen_number)
DefaultDepth(display, screen_number)
int *XListDepths(display, screen_number, count_return)
Display *display;
int screen_number;
int *count_return;
DefaultGC(display, screen_number)
DefaultRootWindow(display)DefaultScreenOfDisplay(display)DefaultScreen(display)
DefaultVisual(display, screen_number)
DisplayCells(display, screen_number)
DisplayPlanes(display, screen_number)
DisplayString(display)
long XMaxRequestSize(display) Display *display;
long XExtendedMaxRequestSize(display) Display
*display;
LastKnownRequestProcessed(display)NextRequest(display)ProtocolVersion(display)X Version 11 Release 6.4 1
AllPlanes(3X11) XLIB FUNCTIONS AllPlanes(3X11)ProtocolRevision(display)QLength(display)
RootWindow(display, screen_number)
ScreenCount(display)
ScreenOfDisplay(display, screen_number)
ServerVendor(display)VendorRelease(display)ARGUMENTS
display Specifies the connection to the X server.
screen_number
Specifies the appropriate screen number on the
host server.
count_return
Returns the number of depths.
DESCRIPTION
The AllPlanes macro returns a value with all bits set to 1
suitable for use in a plane argument to a procedure.
The BlackPixel macro returns the black pixel value for the
specified screen.
The WhitePixel macro returns the white pixel value for the
specified screen.
The ConnectionNumber macro returns a connection number for
the specified display.
The DefaultColormap macro returns the default colormap ID
for allocation on the specified screen.
The DefaultDepth macro returns the depth (number of
planes) of the default root window for the specified
screen.
The XListDepths function returns the array of depths that
are available on the specified screen. If the specified
screen_number is valid and sufficient memory for the array
can be allocated, XListDepths sets count_return to the
number of available depths. Otherwise, it does not set
count_return and returns NULL. To release the memory
allocated for the array of depths, use XFree.
The DefaultGC macro returns the default GC for the root
window of the specified screen.
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AllPlanes(3X11) XLIB FUNCTIONS AllPlanes(3X11)
The DefaultRootWindow macro returns the root window for
the default screen.
The DefaultScreenOfDisplay macro returns the default
screen of the specified display.
The DefaultScreen macro returns the default screen number
referenced in the XOpenDisplay routine.
The DefaultVisual macro returns the default visual type
for the specified screen.
The DisplayCells macro returns the number of entries in
the default colormap.
The DisplayPlanes macro returns the depth of the root win-
dow of the specified screen.
The DisplayString macro returns the string that was passed
to XOpenDisplay when the current display was opened.
The XMaxRequestSize function returns the maximum request
size (in 4-byte units) supported by the server without
using an extended-length protocol encoding. Single proto-
col requests to the server can be no larger than this size
unless an extended-length protocol encoding is supported
by the server. The protocol guarantees the size to be no
smaller than 4096 units (16384 bytes). Xlib automatically
breaks data up into multiple protocol requests as neces-
sary for the following functions: XDrawPoints,
XDrawRectangles, XDrawSegments, XFillArcs,
XFillRectangles, and XPutImage.
The XExtendedMaxRequestSize function returns zero if the
specified display does not support an extended-length pro-
tocol encoding; otherwise, it returns the maximum request
size (in 4-byte units) supported by the server using the
extended-length encoding. The Xlib functions XDrawLines,
XDrawArcs, XFillPolygon, XChangeProperty,
XSetClipRectangles, and XSetRegion will use the extended-
length encoding as necessary, if supported by the server.
Use of the extended-length encoding in other Xlib func-
tions (for example, XDrawPoints, XDrawRectangles,
XDrawSegments, XFillArcs, XFillRectangles, XPutImage) is
permitted but not required; an Xlib implementation may
choose to split the data across multiple smaller requests
instead.
The LastKnownRequestProcessed macro extracts the full
serial number of the last request known by Xlib to have
been processed by the X server.
The NextRequest macro extracts the full serial number that
is to be used for the next request.
X Version 11 Release 6.4 3
AllPlanes(3X11) XLIB FUNCTIONS AllPlanes(3X11)
The ProtocolVersion macro returns the major version number
(11) of the X protocol associated with the connected dis-
play.
The ProtocolRevision macro returns the minor protocol
revision number of the X server.
The QLength macro returns the length of the event queue
for the connected display.
The RootWindow macro returns the root window.
The ScreenCount macro returns the number of available
screens.
The ScreenOfDisplay macro returns a pointer to the screen
of the specified display.
The ServerVendor macro returns a pointer to a null-termi-
nated string that provides some identification of the
owner of the X server implementation.
The VendorRelease macro returns a number related to a ven-
dor's release of the X server.
SEE ALSOBlackPixelOfScreen(3X11), ImageByteOrder(3X11), IsCur-
sorKey(3X11), XOpenDisplay(3X11)
Xlib - C Language X Interface
X Version 11 Release 6.4 4
