Xmgetxmdisplay a display function that returns the xmdisplay object id for a specified display "xmgetxmdisplay" "display functions" "xmgetxmdisplay"
#include <Xm/Display.h> Widget XmGetXmDisplay( Display *display);
XmGetXmDisplay returns the XmDisplay object ID associated with a display. The application can access Display resources with XtGetValues.
Specifies the display for which the XmDisplay object ID is to be returned
For a complete definition of Display and its associated resources, see XmDisplay(3).
Returns the XmDisplay object ID for the specified display.