NAME

       XtConvert, XtDirectConvert - invoke resource converters

SYNTAX

       void XtConvert(Widget w, String from_type, XrmValuePtr from, String to_type, XrmValuePtr
              to_return);

       void XtDirectConvert(XtConverter converter, XrmValuePtr args, Cardinal num_args,
              XrmValuePtr from, XrmValuePtr to_return);

ARGUMENTS

       args      Specifies the argument list that contains the additional arguments needed to
                 perform the conversion (often NULL).

       converter Specifies the conversion procedure that is to be called.

       from      Specifies the value to be converted.

       from_type Specifies the source type.

       num_args  Specifies the number of additional arguments (often zero).

       to_type   Specifies the destination type.

       to_return Returns the converted value.

       w         Specifies the widget to use for additional arguments (if any are needed).

DESCRIPTION

       The XtConvert function looks up the type converter registered to convert from_type to
       to_type, computes any additional arguments needed, and then calls XtDirectConvert.
       XtConvert has been replaced by XtConvertAndStore.

       The XtDirectConvert function looks in the converter cache to see if this conversion
       procedure has been called with the specified arguments.  If so, it returns a descriptor
       for information stored in the cache; otherwise, it calls the converter and enters the
       result in the cache.

       Before calling the specified converter, XtDirectConvert sets the return value size to zero
       and the return value address to NULL.  To determine if the conversion was successful, the
       client should check to_return.address for non-NULL.  XtDirectConvert has been replaced by
       XtCallConverter.

SEE ALSO

       XtAppAddConverter(3), XtStringConversionWarning(3), XtConvertAndStore(3),
       XtCallConverter(3)
       X Toolkit Intrinsics - C Language Interface
       Xlib - C Language X Interface