ScreenOfDisplay(3)

NAME

       AllPlanes, BlackPixel, WhitePixel, ConnectionNumber, DefaultColormap,
       DefaultDepth, XListDepths, DefaultGC, DefaultRootWindow, Default-
       ScreenOfDisplay, DefaultScreen, DefaultVisual, DisplayCells, Display-
       Planes, DisplayString, XMaxRequestSize, XExtendedMaxRequestSize, Last-
       KnownRequestProcessed, NextRequest, ProtocolVersion, ProtocolRevision,
       QLength, RootWindow, ScreenCount, ScreenOfDisplay, ServerVendor, Ven-
       dorRelease - Display macros and functions

SYNTAX

       unsigned long AllPlanes;

       unsigned long BlackPixel(Display *display, int screen_number);

       unsigned long WhitePixel(Display *display, int screen_number);

       int ConnectionNumber(Display *display);

       Colormap DefaultColormap(Display *display, int screen_number);

       int DefaultDepth(Display *display, int screen_number);

       int *XListDepths(Display *display, int screen_number, int
              count_return);

       GC DefaultGC(Display *display, int screen_number);

       Window DefaultRootWindow(Display *display);

       Screen *DefaultScreenOfDisplay(Display *display);

       int DefaultScreen(Display *display);

       Visual *DefaultVisual(Display *display, int screen_number);

       int DisplayCells(Display *display, int screen_number);

       int DisplayPlanes(Display *display, int screen_number);

       char *DisplayString(Display *display);

       long XMaxRequestSize(Display *display)

       long XExtendedMaxRequestSize(Display *display)

       unsigned long LastKnownRequestProcessed(Display *display);

       unsigned long NextRequest(Display *display);

       int ProtocolVersion(Display *display);

       int ProtocolRevision(Display *display);

       int QLength(Display *display);

       Window RootWindow(Display *display, int screen_number);

       int ScreenCount(Display *display);

       Screen *ScreenOfDisplay(Display *display, int screen_number);

       char *ServerVendor(Display *display)

       int VendorRelease(Display *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 speci-
       fied display.

       The DefaultColormap macro returns the default colormap ID for alloca-
       tion 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.

       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 speci-
       fied screen.

       The DisplayCells macro returns the number of entries in the default
       colormap.

       The DisplayPlanes macro returns the depth of the root window of the
       specified screen.

       The DisplayString macro returns the string that was passed to XOpenDis-
       play 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 protocol 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 necessary for the following func-
       tions: XDrawPoints, XDrawRectangles, XDrawSegments, XFillArcs, XFill-
       Rectangles, and XPutImage.

       The XExtendedMaxRequestSize function returns zero if the specified dis-
       play does not support an extended-length protocol encoding; otherwise,
       it returns the maximum request size (in 4-byte units) supported by the
       server using the extended-length encoding.  The Xlib functions XDraw-
       Lines, 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 functions (for example, XDrawPoints, XDrawRectangles, XDrawSeg-
       ments, 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.

       The ProtocolVersion macro returns the major version number (11) of the
       X protocol associated with the connected display.

       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 con-
       nected 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 speci-
       fied display.

       The ServerVendor macro returns a pointer to a null-terminated string
       that provides some identification of the owner of the X server imple-
       mentation.

       The VendorRelease macro returns a number related to a vendor's release
       of the X server.

ScreenOfDisplay(3)

NAME

SYNTAX

ARGUMENTS

DESCRIPTION

SEE ALSO