|
Table of Contents
AllPlanes, BlackPixel,
WhitePixel, ConnectionNumber, DefaultColormap, DefaultDepth, XListDepths,
DefaultGC, DefaultRootWindow, DefaultScreenOfDisplay, DefaultScreen, DefaultVisual,
DisplayCells, DisplayPlanes, DisplayString, XMaxRequestSize, XExtendedMaxRequestSize,
LastKnownRequestProcessed, NextRequest, ProtocolVersion, ProtocolRevision,
QLength, RootWindow, ScreenCount, ScreenOfDisplay, ServerVendor, VendorRelease
- Display macros and functions
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)
- 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.
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.
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 window 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 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 functions: XDrawPoints, XDrawRectangles,
XDrawSegments, XFillArcs, XFillRectangles, and XPutImage.
The
XExtendedMaxRequestSize function returns zero if the specified display
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 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 functions (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.
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 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-terminated
string that provides some identification of the owner of the X server implementation.
The VendorRelease macro returns a number related to a vendor's release
of the X server.
BlackPixelOfScreen(3X11)
, ImageByteOrder(3X11)
,
IsCursorKey(3X11)
, XOpenDisplay(3X11)
Xlib - C Language X Interface
Table of Contents
|
