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XtGetClassExtension(3)           XT FUNCTIONS           XtGetClassExtension(3)


NAME

       XtGetClassExtension - locate a class extension record


SYNTAX

       #include <X11/Intrinsic.h>

       XtPointer XtGetClassExtension(WidgetClass object_class, Cardinal
              byte_offset, XrmQuark type, long version, Cardinal record_size);


ARGUMENTS

       object_class
                 Specifies the widget class containing the extension list to
                 be searched.

       byte_offset
                 Specifies the offset in bytes form the base of the widget
                 class of the extension field to be searched.

       type      Specifies the name of the class extension to be located.

       version   Specifies the minimum acceptable version of the class
                 extension required for a match.

       record_size
                 Specifies the minimum acceptable length of the class
                 extension record required for match, or 0.


DESCRIPTION

       The list of extension records at the specified offset in the specified
       widget_class will be searched for a match on the specified type, a
       version greater than or equal to the specified version, and a record
       size greater than or equal the specified record_size if it is nonzero.
       XtGetClassExtension returns a pointer to a matching extension record or
       NULL if no match is found.  The returned extension record is owned by
       the widget class and must not be modified or freed by the caller,
       except possibly to be modified by the widget class owner.


SEE ALSO

       X Toolkit Intrinsics - C Language Interface
       Xlib - C Language X Interface

X Version 11                      libXt 1.2.1           XtGetClassExtension(3)

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