Digitalmicrograph DM 脚本 - 从另一个对话框更新下拉项目

Question

我正在开发一个 DM 脚本，该脚本创建了一种包含几个对话框的技术。在此脚本中，我试图从另一个对话框中更新一个对话框中的下拉菜单项。

我目前在对话框中有一个带有下拉菜单的按钮，称为“更新”，它调用对话框 class 中称为“updateDialog”的函数。此函数删除所有下拉菜单项，然后插入存储在标签列表中的所有项目。它还会更改该对话框中几个按钮的状态。

这个更新按钮工作得很好。

现在，如果我从另一个对话框中调用此 updateDialog 函数，按钮状态会按预期更改，但下拉菜单不会更新。

有谁知道为什么会发生这种情况and/or是否有办法使它起作用？

谢谢！

示例代码：

taggroup menuitems = newtaglist()
object firstdialog, seconddialog

interface I_seconddialog{
    void updatedropdowndialog(object self);
}

class firstdialog : uiframe{
    void additemresponse (object self){
        number items = menuitems.taggroupcounttags()+1
        menuitems.taggroupinserttagasstring(infinity(), "Created item #"+items)
        menuitems.taggroupopenbrowserwindow(0)
        seconddialog.updatedropdowndialog()
    }

    taggroup createdialog (object self){
        taggroup dialog, dialogitems, additembutton
        dialog = DLGCreateDialog("first_dialog", dialogItems)
        additembutton = DLGCreatePushButton("Add pulldown item", "additemresponse")
        
        dialogitems.dlgaddelement(additembutton)
        return dialog
    }   

    object init (object self){
        return self.super.init( self.createdialog() )
    }
}

class seconddialog : uiframe{
    number isbuttonenabled
    void updatedropdowndialog (object self){
        // Change the state of the state button to show that that does work
        isbuttonenabled = abs(isbuttonenabled-1)
        self.Setelementisenabled("statebutton",isbuttonenabled);
    
        // Empty the dropdown as the menuitems list might be completely different
        taggroup dropdown = self.lookupelement("dropdown")
        taggroup dropdown_items
        dropdown.taggroupgettagastaggroup("Items",dropdown_items)
        dropdown_items.taggroupdeletealltags()  

        // Add the current tags in menuitems to the dropdown
        for(number i=0;i<menuitems.taggroupcounttags();i++){
            string item_name
            menuitems.taggroupgetindexedtagasstring(i,item_name)
            dropdown.dlgaddchoiceitementry(item_name)   
        }
    }

    taggroup createdialog (object self){
        taggroup dialog, dialogitems, dropdown, updatebutton, statebutton
        dialog = DLGCreateDialog("second_dialog", dialogItems)
        taggroup initial_items
        dropdown = DLGCreateChoice(initial_items,0,"dropdownchange").dlgidentifier("dropdown")
        dropdown.dlgaddchoiceitementry("Initial item")
        updatebutton = DLGCreatePushButton("Update dropdown", "updatedropdowndialog")
        statebutton = DLGCreatePushButton("state changes", "stateresponse").dlgidentifier("statebutton")
        
        dialogitems.dlgaddelement(dropdown)
        dialogitems.dlgaddelement(updatebutton)
        dialogitems.dlgaddelement(statebutton)
        return dialog
    }   

    object init (object self){
        isbuttonenabled = 1
        return self.super.init( self.createdialog() )
    }
}

void main(){
    String techniqueName = "Example"
    Image techniqueIcon := RGBImage( "Test icon", 4, 75, 75 )
    techniqueIcon = RGB( icol, irow, iradius )
    object technique = CreateTechnique( techniqueName, techniqueIcon )
    firstdialog = Alloc( firstdialog ).Init()

    String taskName = "First dialog"
    Number taskID = RegisterWorkflowTask( firstdialog, taskName )
    Number bOpenByDefault = 1
    Number bEssential = 0                
    AddWorkflowTask( technique, taskID, bEssential, bOpenByDefault )
    seconddialog = Alloc( seconddialog ).Init()
    
    taskName = "Second dialog"
    taskID = RegisterWorkflowTask( seconddialog, taskName )
    bOpenByDefault = 1
    bEssential = 0                
    AddWorkflowTask( technique, taskID, bEssential, bOpenByDefault )

    AddCustomTechnique( technique )
}

main()

Answer 1

^{不是答案（还），而是更长的澄清评论}

我正在 GMS 3.4.2 上测试您的脚本代码，这是我看到的行为，运行 GMS 启动后的脚本（一次）：

Custom technique is added:

It shows two dialogs initially as:

Pressing "Update dropdown" on the Second dialog toggles the "state changes" button enabled/disabled:

Pressing the "Add pulldown item" button on the First dialog each time adds to the drop-down and toggles the "state changes" button in the Second dialog (and displays the tagList of entries):

这不正是预期的行为吗？

Digitalmicrograph DM 脚本 - 从另一个对话框更新下拉项目

Digitalmicrograph DM script - updating pulldown items from another dialog

dialog

refresh

items

drop-down-menu

dm-script