- XtVaGetSubvalues
- XtVaGetValues
- XtVaOpenApplication
- XtVaSetSubvalues
- XtVaSetValues
- XtWarning
- XtWarningMsg
- XtWidgetToApplicationContext
- XtWindow
- XtWindowOfObject
- XtWindowToWidget
- XUndefineCursor
- XUngrabButton
- XUngrabDevice
- XUngrabDeviceButton
- XUngrabDeviceKey
- XUngrabKey
- XUngrabKeyboard
- XUngrabPointer
- XUngrabServer
- XUninstallColormap
- XUnionRectWithRegion
- XUnionRegion
- XUniqueContext
- XUnloadFont
- XUnlockDisplay
- XUnmapEvent
- XUnmapSubwindows
- XUnmapWindow
- XUnregisterIMInstantiateCallback
- XUnsetICFocus
- Xutf8DrawImageString
- Xutf8DrawString
- Xutf8DrawText
- Xutf8LookupString
- Xutf8ResetIC
- Xutf8SetWMProperties
- Xutf8TextEscapement
- Xutf8TextExtents
- Xutf8TextListToTextProperty
- Xutf8TextPerCharExtents
- Xutf8TextPropertyToTextList
- Xv
- XVaCreateNestedList
- XvCreateImage
- XvFreeAdaptorInfo
- XvFreeEncodingInfo
- XvGetPortAttribute
- XvGetStill
- XvGetVideo
- XvGrabPort
- XVisibilityEvent
- XVisualIDFromVisual
- XVisualInfo
- XvListImageFormats
- XvPortNotify
- XvPutImage
- XvPutStill
- XvPutVideo
- XvQueryAdaptors
- XvQueryBestSize
- XvQueryEncodings
- XvQueryExtension
- XvQueryPortAttributes
- XvSelectPortNotify
- XvSelectVideoNotify
- XvSetPortAttribute
- XvShmCreateImage
- XvShmPutImage
- XvStopVideo
MAN (3)
Library functions, covering in particular the C standard library