Problem when transform command is invoked in a dialog

Question

Hi friends
I´m having a problem with the script UI. I tried various things to correct but I´m not able to get sucess.
The code in the script is correct. The problem is: when I run the script and click the "execute" button...Photoshop would need to execute the "Transform" function it is called and would allow me to freely transform the selected layer.
BUT...it does not allow me to drag the axis of bounding boxes to transform. This is because Photoshop is understanding my dialog box UI is still active, ---even calling dlg.close()--- (and I cannot transform since a dialog box is active).
See it:
function transform(){
var desc = new ActionDescriptor();
var ref = new ActionReference();
ref.putEnumerated( charIDToTypeID('Lyr '), charIDToTypeID('Ordn'), charIDToTypeID('Trgt') );
desc.putReference( charIDToTypeID('null'), ref );
desc.putEnumerated( charIDToTypeID('FTcs'), charIDToTypeID('QCSt'), charIDToTypeID('Qcsa') );
var desc2 = new ActionDescriptor();
desc2.putUnitDouble( charIDToTypeID('Hrzn'), charIDToTypeID('#Rlt'), 0.000000 );
desc2.putUnitDouble( charIDToTypeID('Vrtc'), charIDToTypeID('#Rlt'), 0.000000 );
desc.putObject( charIDToTypeID('Ofst'), charIDToTypeID('Ofst'), desc2 );
desc.putUnitDouble( charIDToTypeID('Hght'), charIDToTypeID('#Prc'), 100.001);
try{ executeAction( charIDToTypeID('Trnf'), desc, DialogModes.ALL ); }catch(e){};
var dlg = new Window ("dialog", "Processamento de imagens v10", [0,0,0,0])
dlg.size = [120,120]
dlg.center ()
var run = dlg.add ("button", [0,0,0,0], "Executar")
run.size = [80,30]
run.location = [30,40]
run.onClick = function (){
    dlg.close()
    var doc = app.activeDocument
    var layer = doc.activeLayer
    layer.isBackgroundLayer = false
    transform()
dlg.show()
What Am I missing?
Photoshop does not accept Window of type ("palette") so I do not know how to handle it
Thank you for the help
Best Regards
Gustavo.

Answer 1

You can not have more than one modal dialogs running at once. The scriptUI dialog is modal and so is your transform function. All you can do for this example is move the transform line to after the dlg.show(); line.
Photoshop does have a 'palette' window but because it is non-modal it is really only useful for progressbars or other 'please wait' messages. For the example you posted if it were a palette the script would not stop at dlg.show() and wait for the user to do something. It would try to run the next line and, not finding one, end. At best you would only see the window flash before the script finished.