var doc = app.activeDocument;
var layer = doc.activeLayer;
var strokeO = 2; //Offset from baseline
function drawUnderline(x, y, w, sw, sg, color, ln){
	var h = 1;//height stroke
	var p = sw+sg; //stroke period
	
	prevColor = app.foregroundColor;
	app.foregroundColor = color;
	
	
	// =======================================================
var id2631 = charIDToTypeID( "Mk  " );
    var desc192 = new ActionDescriptor();
    var id2632 = charIDToTypeID( "null" );
        var ref77 = new ActionReference();
        var id2633 = stringIDToTypeID( "contentLayer" );
        ref77.putClass( id2633 );
    desc192.putReference( id2632, ref77 );
    var id2634 = charIDToTypeID( "Usng" );
        var desc193 = new ActionDescriptor();
        var id2635 = charIDToTypeID( "Type" );
        var id2636 = stringIDToTypeID( "solidColorLayer" );
        desc193.putClass( id2635, id2636 );
        var id2637 = charIDToTypeID( "Shp " );
            var desc194 = new ActionDescriptor();
            var id2638 = charIDToTypeID( "Top " );
            var id2639 = charIDToTypeID( "#Pxl" );
            desc194.putUnitDouble( id2638, id2639, y );
            var id2640 = charIDToTypeID( "Left" );
            var id2641 = charIDToTypeID( "#Pxl" );
            desc194.putUnitDouble( id2640, id2641, x );
            var id2642 = charIDToTypeID( "Btom" );
            var id2643 = charIDToTypeID( "#Pxl" );
            desc194.putUnitDouble( id2642, id2643, y+h );
            var id2644 = charIDToTypeID( "Rght" );
            var id2645 = charIDToTypeID( "#Pxl" );
            desc194.putUnitDouble( id2644, id2645, x+sw );
        var id2646 = charIDToTypeID( "Rctn" );
        desc193.putObject( id2637, id2646, desc194 );
    var id2647 = stringIDToTypeID( "contentLayer" );
    desc192.putObject( id2634, id2647, desc193 );
executeAction( id2631, desc192, DialogModes.NO );

for (var i= 0; i < ((w-p)/p); i++){

// =======================================================
	var id2648 = charIDToTypeID( "AddT" );
		var desc195 = new ActionDescriptor();
		var id2649 = charIDToTypeID( "null" );
			var ref78 = new ActionReference();
			var id2650 = charIDToTypeID( "Path" );
			var id2651 = charIDToTypeID( "Ordn" );
			var id2652 = charIDToTypeID( "Trgt" );
			ref78.putEnumerated( id2650, id2651, id2652 );
		desc195.putReference( id2649, ref78 );
		var id2653 = charIDToTypeID( "T   " );
			var desc196 = new ActionDescriptor();
			var id2654 = charIDToTypeID( "Top " );
			var id2655 = charIDToTypeID( "#Pxl" );
			desc196.putUnitDouble( id2654, id2655, y );
			var id2656 = charIDToTypeID( "Left" );
			var id2657 = charIDToTypeID( "#Pxl" );
			desc196.putUnitDouble( id2656, id2657, (p*(i+1))+x );
			var id2658 = charIDToTypeID( "Btom" );
			var id2659 = charIDToTypeID( "#Pxl" );
			desc196.putUnitDouble( id2658, id2659, y+h );
			var id2660 = charIDToTypeID( "Rght" );
			var id2661 = charIDToTypeID( "#Pxl" );
			desc196.putUnitDouble( id2660, id2661, (p*(i+1))+x+sw );
		var id2662 = charIDToTypeID( "Rctn" );
		desc195.putObject( id2653, id2662, desc196 );
	executeAction( id2648, desc195, DialogModes.NO );
	}
app.foregroundColor = prevColor;
var newLayer = doc.activeLayer;
newLayer.link(doc.layers.getByName (ln))
}




dlg = new Window ('dialog', 'Dotted and Dashed Text For Point Text');
dotBtn = dlg.add('button', undefined, 'Dotted');
dashBtn = dlg.add('button', undefined, 'Dashed');

dotBtn.onClick = function(){
	var strokeW = 1; // Width
	var strokeG = 1; // Gitter
	
	ti.underline = UnderlineType.UNDERLINEOFF;
	drawUnderline(Math.round(layer.bounds[0]), Math.round(ti.position[1]+strokeO), layer.bounds[2] - layer.bounds[0], strokeW, strokeG, ti.color, layer.name);
	dlg.hide();
}

dashBtn.onClick = function(){
	var strokeW = 3; // Width
	var strokeG = 2; // Gitter
	
	ti.underline = UnderlineType.UNDERLINEOFF;
	drawUnderline(Math.round(layer.bounds[0]), Math.round(ti.position[1]+strokeO), layer.bounds[2] - layer.bounds[0], strokeW, strokeG, ti.color, layer.name);
	dlg.hide();
}



if (layer.kind == LayerKind.TEXT){
	ti = layer.textItem;
	if (ti.kind = TextType.POINTTEXT){
		dlg.show();
	}
}