getViewportLeftColumn Method

Gets the index of the left column in the viewport.

Syntax

Javascript (Usage)
Javascript (Specification)

var instance = new GC.Spread.Sheets.Worksheet(name);
var value; // Type: number
value = instance.getViewportLeftColumn(columnViewportIndex);

function getViewportLeftColumn( 
   columnViewportIndex : number
) : number;

Parameters

columnViewportIndex: The index of the viewport.

Return Value

The index of the left column in the viewport.

Example

This example uses the getViewportLeftColumn method.

Javascript

$("#button1").click(function () {  
    //Acquire top row (column) index
    var topRow = activeSheet.getViewportTopRow(1);
    var leftCol = activeSheet.getViewportLeftColumn(1);
    alert("Index of top row being displayed: " + topRow + "\n" +
        "Index of first column being displayed: " + leftCol);
});

//Add button control to page
<input type="button" id="button1" value="button1"/>

This example returns the indices for the bottom and top rows and left and right columns in the current sheet view.

Javascript

var brow = activeSheet.getViewportBottomRow(1);
var lcol = activeSheet.getViewportLeftColumn(1);
var rcol = activeSheet.getViewportRightColumn(1);
var trow = activeSheet.getViewportTopRow(1);
alert(brow);
alert(lcol);
alert(rcol);
alert(trow);

Reference

Worksheet type