XtStringConversionWarning() - issue a conversion warning message
void XtStringConversionWarning (String src, dst_type)
The XtStringConversionWarning(3) function issues a warning message with name ``conversionError'', type ``string'', class ``XtToolkitError, and the default message string ``Cannot convert src to type dst_type''.
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface