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XtGetClassExtension(3Xt)   XT FUNCTIONS	 XtGetClassExtension(3Xt)


NAME
       XtGetClassExtension - locate a class extension record

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


ARGUMENTS
       object_class
		 Specifies the widget class containing the exten
		 sion 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.  XtGetClass_
       Extension 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 modi
       fied or freed by the caller, except possibly to be modi
       fied by the widget class owner.

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









X Version 11		   Release 6.1				1


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