XmCommandAppendValue - Man Page
A Command function that appends the passed XmString to the end of the string displayed in the command area of the widget
Synopsis
#include <Xm/Command.h> void XmCommandAppendValue( Widget widget, XmString command);
Description
XmCommandAppendValue appends the passed XmString to the end of the string displayed in the command area of the Command widget.
- widget
- Specifies the Command widget ID 
- command
- Specifies the passed XmString 
For a complete definition of Command and its associated resources, see XmCommand(3).