onGridResize

fires when the user is dragging the grid's border to resize the grid

old_width	number	the initial grid's width
new_width	number	the new grid's width

Available only in PRO Edition

Example

gantt.attachEvent("onGridResize", function(old_width, new_width){
    if(!message){
        message = gantt.message({expire:-1,
        text:"Grid is now <b id='width_placeholder'></b><b>px</b> width"});
    }
    document.getElementById("width_placeholder").innerText = new_width;
});

Related samples

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