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 XtConvert has been replaced by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 XtDirectConvert has been replaced by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(3Xt), XtStringConversionWarning(3Xt),
XtConvertAndStore(3Xt), XtCallConverter(3Xt)
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface