import mx.core.UIComponent
import mx.controls.ComboBox


class ExtraComboRenderer extends UIComponent
{

var Combo : MovieClip;
var listOwner : MovieClip; // the reference we receive to the list
var getCellIndex : Function; // the function we receive from the list
var getDataLabel : Function; // the function we receive from the list
var cards2 = [ {label:"test1", data:1}, {label:"test2", data:2}, {label:"test3", data:3} ];

var layoutHeight = 22;
var layoutWidth = 100;

function ExtraComboRenderer()
{
}

function createChildren(Void) : Void
{
Combo = createClassObject(ComboBox, "ComboBox", 1, {styleName:this, owner:this});
Combo.addEventListener("change", this);
Combo.dataProvider = cards2;
size();
}

// note that setSize is implemented by UIComponent and calls size(), after setting
// __width and __height
function size(Void) : Void
{
Combo.setSize(100, layoutHeight);
Combo._x = (layoutWidth-100)/2;
Combo._y = (layoutHeight-16)/2;
}

function setValue(str:String, item:Object, sel:Boolean) : Void
{
Combo._visible = (item!=undefined);
Combo.editable=true;
Combo.selectedIndex=Number(str);
}

function getPreferredHeight(Void) : Number
{
return 16;
}

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

function change()
{
listOwner.editField(getCellIndex().itemIndex, getDataLabel(), String(Combo.selectedIndex));
}

}

■flaの方
var dat = new Array();

for(i = 0;i < 50;i++){
	dat.addItem({aaa:i+"行目",bbb:i % 3});
}
grid.dataProvider = dat;
grid.getColumnAt(1).cellRenderer = "ExtraComboRenderer";

■asの方
function setValue(str:String, item:Object, sel:Boolean) : Void
{
Combo._visible = (item!=undefined);
Combo.dataProvider = cards2;
Combo.editable=true;
//Combo.getItemAt(1).label;

Combo.selectedIndex = str;
}

Combo.getItemAt(1).label;