Opening a dialog window from the JSX file

Question

I can open a new window in a normal jsx script with
var dlgMain = new Window();
dlgMain.show();
But this code will give an EvalScript error when run inside a JSX file in an HTML5 extension. (What I actually need is to open a file selector window and get the full path of the file). How can I do this with an HTML5 extension?

Answer 1

Solved with the following code:
                    var inFolder = File.openDialog("Select File");
                    var idPlc = charIDToTypeID("Plc ");
                    var desc1 = new ActionDescriptor();
                    var idnull = charIDToTypeID("null");
                    desc1.putPath(idnull, new File(inFolder));
                    var idFTcs = charIDToTypeID("FTcs");
                    var idQCSt = charIDToTypeID("QCSt");
                    var idQcsa = charIDToTypeID("Qcsa");
                    desc1.putEnumerated(idFTcs, idQCSt, idQcsa);
                    var idOfst = charIDToTypeID("Ofst");
                    var desc2 = new ActionDescriptor();
                    var idHrzn = charIDToTypeID("Hrzn");
                    var idPxl = charIDToTypeID("#Pxl");
                    desc2.putUnitDouble(idHrzn, idPxl, 0.000000);
                    var idVrtc = charIDToTypeID("Vrtc");
                    var idPxl = charIDToTypeID("#Pxl");
                    desc2.putUnitDouble(idVrtc, idPxl, -0.000000);
                    var idOfst = charIDToTypeID("Ofst");
                    desc1.putObject(idOfst, idOfst, desc2);
                    executeAction(idPlc, desc1, DialogModes.NO);