XmTextFieldGetSelectionWcs man page
XmTextFieldGetSelectionWcs — A TextField function that retrieves the value of a wide character encoded primary selection
#include <Xm/TextF.h> wchar_t * XmTextFieldGetSelectionWcs( Widget widget);
XmTextFieldGetSelectionWcs retrieves the value of the primary selection, encoded in a wide character format. It returns a NULL pointer if no text is selected in the widget. The application is responsible for freeing the storage associated with the wide character buffer by calling XtFree.
Specifies the TextField widget ID
For a complete definition of TextField and its associated resources, see XmTextField(3).
Returns the wide character string that is associated with the primary selection in the TextField widget.
XmTextField(3) and XmTextFieldGetSelection(3).