Wanna select multiple folders in the open dialog box, but it’s impossible, isn’t it?

As suggested, a possible approach :

Folder.prototype.selectMultipleDialog = function (prompt,multiselect){
  var w = new Window('dialog','MultipleSelectDialog'),
  st,
  ls,
  btnGp,
    koBtn,
    okBtn,
    folderFilter = function(f){
        return (f instanceof Folder)
    },
    u,
    folders = this.getFiles(folderFilter),
    getFolderNames = function(foldersObjectArray){
        var n = foldersObjectArray.length,
        namesArray = [];
        while ( n--){
            namesArray = decodeURI(foldersObjectArray.name);
        }
        return namesArray;
    },
    folderListItems = getFolderNames(folders),
    n = 0;
   
  
   
    st = w.add('statictext',u,prompt);
    ls = w.add('listbox',undefined, folderListItems, {multiselect:multiselect} );

    btnGp = w.add('group');
   
    koBtn = btnGp.add('button',u,'Cancel');
    okBtn = btnGp.add('button',u,'Select');


    koBtn.onClick = function(){
  w.close(0);
  }


  okBtn.onClick = function(){
  w.close(1);
  }
   
    ls.onChange = function() {
        okBtn.enabled = ls.selection!==null;
    }
   
    w.preferredSize.width = 450;
    w.alignChildren = ["fill","top"];
    ls.preferredSize.height = 200;
    btnGp.alignChildren = ["right","top"];


  okBtn.enabled = false;

    if ( w.show()==1 ){
  if ( ls.selection instanceof Array ) {
  n = ls.selection.length;
            while ( n-- ) folders[ls.selection.index].execute();
  }
  else {
  folders[ls.selection.index].execute();
  }
  }
}


var fo = Folder.desktop;
fo.selectMultipleDialog("test", true)

HTH

Loic

www.ozalto.com