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digitalmars.D.learn - DlangUI: how to change AppFrames?

reply Ki Rill <rill.ki yahoo.com> writes:
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?
Oct 23 2023
parent reply Imperatorn <johan_forsberg_86 hotmail.com> writes:
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?
Oct 23 2023
parent reply Ki Rill <rill.ki yahoo.com> writes:
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
```
Oct 24 2023
parent reply GrimMaple <grimmaple95 gmail.com> writes:
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
Oct 24 2023
parent Ki Rill <rill.ki yahoo.com> writes:
On Tuesday, 24 October 2023 at 11:23:05 UTC, GrimMaple wrote:

 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


It does not work. It does accept new widgets though, but crashes 
if I try to change to the previous one.

I posted the whole code to GitHub 
[issue](https://github.com/buggins/dlangui/issues/677).
Oct 26 2023