if( incW > -1 ) { XtSetArg( args[count], XmNwidthInc, incW ); ++count; }
if( incH > -1 ) { XtSetArg( args[count], XmNheightInc, incH ); ++count; }
if( incW > -1 ) { XtSetArg( args[count], XmNwidthInc, incW ); ++count; }
if( incH > -1 ) { XtSetArg( args[count], XmNheightInc, incH ); ++count; }