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XtGetClassExtension - locate a class extension
record
- XtPointer XtGetClassExtension(WidgetClass object_class, Cardinal
- byte_offset, XrmQuark type, long version, Cardinal record_size);
Specifies
the widget class containing the extension list to be searched.
Specifies
the offset in bytes form the base of the widget class of the extension
field to be searched.
Specifies the name of the class extension to be located.
Specifies the minimum acceptable version of the class extension required
for a match.
Specifies the minimum acceptable length of the class extension
record required for match, or 0.
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.
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface
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