XtAppSetTypeConverter, XtSetTypeConverter - register resource converter
#include <X11/Intrinsic.h>
void XtAppSetTypeConverter(XtAppContext app_context,
    const char *from_type, const char * to_type, XtTypeConverter
    converter, XtConvertArgList convert_args, Cardinal
    num_args, XtCacheType cache_type, XtDestructor
    destructor);
void XtSetTypeConverter(const char *from_type, const
    char *to_type, XtTypeConverter converter, XtConvertArgList
    convert_args, Cardinal num_args, XtCacheType
    cache_type, XtDestructor destructor);
  - app_context
- Specifies the application context.
- converter
- Specifies the type converter procedure.
- convert_args
- Specifies how to compute the additional arguments to the converter or
      NULL.
- from_type
- Specifies the source type.
- num_args
- Specifies the number of additional arguments to the converter or
    zero.
- to_type
- Specifies the destination type.
- cache_type
- Specifies whether or not resources produced by this converter are sharable
      or display-specific and when they should be freed.
- destructor
- Specifies a destroy procedure for resources produced by this conversion,
      or NULL if no additional action is required to deallocate resources
      produced by the converter.
XtSetTypeConverter registers the specified type converter and destructor
  in all application contexts created by the calling process, including any
  future application contexts that may be created. XtAppSetTypeConverter
  registers the specified type converter in the single application context
  specified. If the same from_type and to_type are specified in
  multiple calls to either function, the most recent overrides the previous
  ones.
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface