XmSetFontUnits — A function that sets the font unit value for a display "XmSetFontUnits"

XmSetFontUnits  provides  an  external  function to initialize font unit values. Applications may want to
       specify resolution-independent data based on a global font size. This function must be called before  any
       widgets  with  resolution-independent  data  are created. See the XmNunitType resource description in the
       reference pages for XmGadget, XmManager, and XmPrimitive for more information on resolution independence.

       This function sets the font units for all screens on the display.

       NOTE:XmSetFontUnits is obsolete and exists for compatibility with previous releases.  Instead  of  using
       this   function,   provide   initial   values   or   call   XtSetValues   for   the   XmScreen  resources
       XmNhorizontalFontUnit and XmNverticalFontUnit.

       display   Defines the display for which this font unit value is to be applied.

       h_value   Specifies the value to be used for horizontal units in the conversion calculations.

       h_value   Specifies the value to be used for vertical units in the conversion calculations.

XmSetFontUnits — A function that sets the font unit value for a display "XmSetFontUnits"

XmConvertUnits(3), XmSetFontUnit(3), XmGadget(3), XmManager(3), XmPrimitive(3), and XmScreen(3).

                                                                                               XmSetFontUnits(3)

       #include <Xm/Xm.h>
       voidXmSetFontUnits(
       Display*display,
       inth_value,
       intv_value);