on(click){
    _parent.myDataGrid.rows[0].cells[0].mcButton.onPress();
    _parent.myDataGrid.rows[0].cells[0].mcButton.onRelease();
}

grid.rows[0].cells[0].myButton.dispatchEvent([type:"click"]);

import mx.core.UIComponent
import mx.controls.Button

class ButtonCellRenderer extends UIComponent
{
    var mcButton : MovieClip;
    var listOwner : MovieClip;
    var getCellIndex : Function;
    var getDataLabel : Function;

    function ButtonCellRenderer()
    {
    }

    function createChildren(Void) : Void
    {	
        mcButton = createObject("Button", "cmd", 1, {styleName:this, owner:this});
        mcButton.addEventListener("click", this);
        size();
    }

    function size(Void) : Void
    {
        mcButton.setSize(100, 22);
        mcButton._x = (__width-100)/2;
        mcButton._y = (__height-22)/2;
    }

    function setValue(str:String, item:Object, sel:Boolean) : Void
    {
        mcButton._visible = (item!=undefined);
        mcButton.label = "Button" + (getCellIndex().itemIndex + 1);
        mcButton._name = "Button" + (getCellIndex().itemIndex + 1);
	}

    function getPreferredHeight(Void) : Number
    {
        return 22;
    }

    function getPreferredWidth(Void) : Number
    {
        return 100;
    }

    function click()
    {
        trace(getCellIndex().itemIndex + 1 + "行目のボタンをクリックしました！");
    }

}