DlangUI: how to change AppFrames?

[GrimMaple]

On Tuesday, 24 October 2023 at 08:20:19 UTC, Ki Rill wrote:
> On Tuesday, 24 October 2023 at 05:03:51 UTC, Imperatorn wrote:
>> On Tuesday, 24 October 2023 at 04:38:58 UTC, Ki Rill wrote:
>>> I know how to change the current AppFrame:
>>> ```D
>>> window.mainWidget = myFrame;
>>> ```
>>>
>>> But how do I exit this frame?
>>>
>>> I press the button, change to new frame, do the work, and now 
>>> I want to return to the previous frame. How would I do this?
>>
>> Saving the previous frame not an option?
>
> It crashes if I reset it to the previous one.
> ```d
> button.click = delegate(Widget src) {
>     // window.mainWidget = homeLayout.child(0);
>     window.mainWidget = myPreviousFrame;
>     return true;
> };
>
> // crash
> ```

I think there was some kind of issue when changing widgets like 
that. Please try doing this instead:
```d
window.executeInUiThread(() => window.mainWidget = 
myPreviousFrame);
```

Also, please post whole code so maybe I can fix this later