XmContainerCopy — Container widget function to copy primary
selection to the clipboard

     #include <Xm/Container.h>
Boolean XmContainerCopy(
Widget container,
Time timestamp);

     XmContainerCopy copies the primary selected container
items to the clipboard.  This routine calls the
XmNconvertCallback procedures, possibly multiple times, with
the selection member of the XmConvertCallbackStruct set to
CLIPBOARD and with the parm member set to XmCOPY.

container Specifies the Container widget ID.

timestamp Specifies the server time at which to modify the
          selection value.

     For a complete definition of Container and its
associated resources, see XmContainer(3).

     The function returns False in the following cases: if
the primary selection is NULL, if the widget does not own
the primary selection, or if the function is unable to gain
ownership of the clipboard selection.  Otherwise, it returns