X Protocol Requests and Corresponding Xlib Functions

This table maps X protocol requests to the Xlib functions that use them. The reverse mapping of Xlib functions to X protocol requests is available separately.

Note that the mapping is not one-to-one. Some Xlib functions generate more than one X protocol request. Conversely, some X protocol requests are used by more than one Xlib function.

These tables should help X Window System programmers debug X protocol error messages. A tutorial on debugging X protocol errors is also available separately.

X Protocol Request	Xlib Function
AllocColor	XAllocColor
AllocColorCells	XAllocColorCells
AllocColorPlanes	XAllocColorPlanes
AllocNamedColor	XAllocNamedColor
AllowEvents	XAllowEvents
Bell	XBell
SetAccessControl	XDisableAccessControl XEnableAccessControl XSetAccessControl
ChangeActivePointerGrab	XChangeActivePointerGrab
SetCloseDownMode	XSetCloseDownMode
ChangeGC	XChangeGC XSetArcMode XSetBackground XSetClipMask XSetClipOrigin XSetFillRule XSetFillStyle XSetFont XSetForeground XSetFunction XSetGraphicsExposures XSetLineAttributes XSetPlaneMask XSetState XSetStipple XSetSubwindowMode XSetTile XSetTSOrigin
ChangeHosts	XAddHost XAddHosts XRemoveHost XRemoveHosts
ChangeKeyboardControl	XAutoRepeatOff XAutoRepeatOn XChangeKeyboardControl
ChangeKeyboardMapping	XChangeKeyboardMapping
ChangePointerControl	XChangePointerControl
ChangeProperty	XChangeProperty XSetClassHint XSetCommand XSetIconName XSetIconSizes XSetNormalHints XSetRGBColormaps XSetSizeHints XSetStandardProperties XSetTextProperty XSetTransientForHint XSetWMClientMachine XSetWMColormapWindows XSetWMHints XSetWMIconName XSetWMName XSetWMNormalHints XSetWMProperties XSetWMProtocols XSetWMSizeHints XSetZoomHints XStoreBuffer XStoreBytes XStoreName
ChangeSaveSet	XAddToSaveSet XChangeSaveSet XRemoveFromSaveSet
ChangeWindowAttributes	XChangeWindowAttributes XDefineCursor XSelectInput XSetWindowBackground XSetWindowBackgroundPixmap XSetWindowBorder XSetWindowBorderPixmap XSetWindowColormap XUndefineCursor
CirculateWindow	XCirculateSubwindowsDown XCirculateSubwindowsUp XCirculateSubwindows
ClearArea	XClearArea XClearWindow
CloseFont	XFreeFont XUnloadFont
ConfigureWindow	XConfigureWindow XLowerWindow XMapRaised XMoveResizeWindow XMoveWindow XRaiseWindow XReconfigureWMWindow XResizeWindow XRestackWindows XSetWindowBorderWidth
ConvertSelection	XConvertSelection
CopyArea	XCopyArea
CopyColormapAndFree	XCopyColormapAndFree
CopyGC	XCopyGC
CopyPlane	XCopyPlane
CreateColormap	XCreateColormap
CreateCursor	XCreatePixmapCursor
CreateGC	XCreateGC XCreateBitmapFromData XCreatePixmapFromData XOpenDisplay XReadBitmapFile
CreateGlyphCursor	XCreateFontCursor XCreateGlyphCursor
CreatePixmap	XCreatePixmap XCreateBitmapFromData XCreatePixmapFromData XReadBitmapFile
CreateWindow	XCreateSimpleWindow XCreateWindow
DeleteProperty	XDeleteProperty
DestroySubwindows	XDestroySubwindows
DestroyWindow	XDestroyWindow
FillPoly	XFillPolygon
ForceScreenSaver	XActivateScreenSaver XForceScreenSaver XResetScreenSaver
FreeColormap	XFreeColormap
FreeColors	XFreeColors
FreeCursor	XFreeCursor
FreeGC	XFreeGC XCreateBitmapFromData XCreatePixmapFromData XReadBitmapFile
FreePixmap	XFreePixmap
GetAtomName	XGetAtomName
GetFontPath	XGetFontPath
GetGeometry	XGetGeometry XGetWindowAttributes
GetImage	XGetImage
GetInputFocus	XGetInputFocus XSync XSynchronize
GetKeyboardControl	XGetKeyboardControl
GetKeyboardMapping	XGetKeyboardMapping
GetModifierMapping	XGetModifierMapping
GetMotionEvents	XGetMotionEvents
GetPointerControl	XGetPointerControl
GetPointerMapping	XGetPointerMapping
GetProperty	XFetchBytes XFetchName XGetClassHint XGetIconName XGetIconSizes XGetNormalHints XGetRGBColormaps XGetSizeHints XGetTextProperty XGetTransientForHint XGetWMClientMachine XGetWMColormapWindows XGetWMHints XGetWMIconName XGetWMName XGetWMNormalHints XGetWMProtocols XGetWMSizeHints XGetWindowProperty XGetZoomHints
GetSelectionOwner	XGetSelectionOwner
GetWindowAttributes	XGetWindowAttributes
GrabButton	XGrabButton
GrabKey	XGrabKey
GrabKeyboard	XGrabKeyboard
GrabPointer	XGrabPointer
GrabServer	XGrabServer
ImageText16	XDrawImageString16
ImageText8	XDrawImageString
InstallColormap	XInstallColormap
InternAtom	XGetWMColormapWindows XGetWMProtocols XIconifyWindow XInternAtom XSetWMColormapWindows XSetWMProtocols
KillClient	XKillClient
ListExtensions	XListExtensions
ListFonts	XListFonts
ListFontsWithInfo	XListFontsWithInfo
ListHosts	XListHosts
ListInstalledColormaps	XListInstalledColormaps
ListProperties	XListProperties
LookupColor	XLookupColor XParseColor
MapSubwindows	XMapSubwindows
MapWindow	XMapRaised XMapWindow
NoOperation	XNoOp
OpenFont	XLoadFont XLoadQueryFont
PolyArc	XDrawArc XDrawArcs
PolyFillArc	XFillArc XFillArcs
PolyFillRectangle	XFillRectangle XFillRectangles
PolyLine	XDrawLines
PolyPoint	XDrawPoint XDrawPoints
PolyRectangle	XDrawRectangle XDrawRectangles
PolySegment	XDrawLine XDrawSegments
PolyText16	XDrawString16 XDrawText16
PolyText8	XDrawString XDrawText
PutImage	XPutImage XCreateBitmapFromData XCreatePixmapFromData XReadBitmapFile
QueryBestSize	XQueryBestCursor XQueryBestSize XQueryBestStipple XQueryBestTile
QueryColors	XQueryColor XQueryColors
QueryExtension	XInitExtension XQueryExtension
QueryFont	XLoadQueryFont XQueryFont
QueryKeymap	XQueryKeymap
QueryPointer	XQueryPointer
QueryTextExtents	XQueryTextExtents XQueryTextExtents16
QueryTree	XQueryTree
RecolorCursor	XRecolorCursor
ReparentWindow	XReparentWindow
RotateProperties	XRotateBuffers XRotateWindowProperties
SendEvent	XIconifyWindow XReconfigureWMWindow XSendEvent XWithdrawWindow
SetClipRectangles	XSetClipRectangles
SetCloseDownMode	XSetCloseDownMode
SetDashes	XSetDashes
SetFontPath	XSetFontPath
SetInputFocus	XSetInputFocus
SetModifierMapping	XSetModifierMapping
SetPointerMapping	XSetPointerMapping
SetScreenSaver	XGetScreenSaver XSetScreenSaver
SetSelectionOwner	XSetSelectionOwner
StoreColors	XStoreColor XStoreColors
StoreNamedColor	XStoreNamedColor
TranslateCoordinates	XTranslateCoordinates
UngrabButton	XUngrabButton
UngrabKey	XUngrabKey
UngrabKeyboard	XUngrabKeyboard
UngrabPointer	XUngrabPointer
UngrabServer	XUngrabServer
UninstallColormap	XUninstallColormap
UnmapSubwindows	XUnmapSubWindows
UnmapWindow	XUnmapWindow XWithdrawWindow
WarpPointer	XWarpPointer