I am having some seemingly basic problems using the TreeWidget from DLangUI on Windows.  I posted on the project's gitter channel some time ago but did not get any response.

All I am trying to do is add children to the tree's nodes at runtime.  The simple code below attempts to add a new node when a button is pressed.  As far as I can tell, the node does indeed get added, since the new node responds to keyboard events, but it does not render.  I have tried everything to get it to render, using all the available invalidate/redraw methods, even as far as removing and re-adding the control again to its layout, but nothing seems to work.  Any advice would be greatly received!

extern (C) int UIAppMain(string[] args) {
  auto window  = Platform.instance.createWindow("DlangUI example - HelloWorld", null);
  auto vlayout = new VerticalLayout();
  TreeWidget tree = new TreeWidget("Root");
  TreeItem tree2 = tree.items.newChild("machinesroot", "Machines"d, null);
  auto machine0 = tree2.newChild("machine0", "Machine 0"d, null);
  machine0.newChild("machine0stack", "Stack", null);
  auto btn = (new Button("btn1", "Button 1"d));
  btn.click = delegate(Widget src) {
    // this gets added but does not render
    tree2.newChild("machine1", "Machine 1"d, null);
    return true;
  };
  vlayout.addChild(btn);
  vlayout.addChild(tree);
  window.mainWidget = vlayout;
  window.show();
  return Platform.instance.enterMessageLoop();
}

Thanks

On Friday, 8 September 2017 at 12:10:23 UTC, pezi_pink wrote:
> I am having some seemingly basic problems using the TreeWidget from DLangUI on Windows.  I posted on the project's gitter channel some time ago but did not get any response.
>
> All I am trying to do is add children to the tree's nodes at runtime.  The simple code below attempts to add a new node when a button is pressed.  As far as I can tell, the node does indeed get added, since the new node responds to keyboard events, but it does not render.  I have tried everything to get it to render, using all the available invalidate/redraw methods, even as far as removing and re-adding the control again to its layout, but nothing seems to work.  Any advice would be greatly received!
>
> extern (C) int UIAppMain(string[] args) {
>   auto window  = Platform.instance.createWindow("DlangUI example - HelloWorld", null);
>   auto vlayout = new VerticalLayout();
>   TreeWidget tree = new TreeWidget("Root");
>   TreeItem tree2 = tree.items.newChild("machinesroot", "Machines"d, null);
>   auto machine0 = tree2.newChild("machine0", "Machine 0"d, null);
>   machine0.newChild("machine0stack", "Stack", null);
>   auto btn = (new Button("btn1", "Button 1"d));
>   btn.click = delegate(Widget src) {
>     // this gets added but does not render
>     tree2.newChild("machine1", "Machine 1"d, null);
>     return true;
>   };
>   vlayout.addChild(btn);
>   vlayout.addChild(tree);
>   window.mainWidget = vlayout;
>   window.show();
>   return Platform.instance.enterMessageLoop();
> }
>
> Thanks

It's known issue:

https://github.com/buggins/dlangui/issues/278

Not sure if there is any workaround.

On Friday, 8 September 2017 at 15:08:27 UTC, Vadim Lopatin wrote:
> On Friday, 8 September 2017 at 12:10:23 UTC, pezi_pink wrote:
>> [...]
>
> It's known issue:
>
> https://github.com/buggins/dlangui/issues/278
>
> Not sure if there is any workaround.


Ah, thanks for the reply. I did check the issues on git, obviously not well enough!

That's a shame, it renders (no pun intended) DLangUI basically useless for my project :(  maybe I will have to get the debugger out ...

On Friday, 8 September 2017 at 15:39:21 UTC, pezi_pink wrote:
> On Friday, 8 September 2017 at 15:08:27 UTC, Vadim Lopatin wrote:
>> On Friday, 8 September 2017 at 12:10:23 UTC, pezi_pink wrote:
>>> [...]
>>
>> It's known issue:
>>
>> https://github.com/buggins/dlangui/issues/278
>>
>> Not sure if there is any workaround.
>
>
> Ah, thanks for the reply. I did check the issues on git, obviously not well enough!
>
> That's a shame, it renders (no pun intended) DLangUI basically useless for my project :(  maybe I will have to get the debugger out ...

Will try to fix it in a few days.

On Friday, 8 September 2017 at 15:39:21 UTC, pezi_pink wrote:
> On Friday, 8 September 2017 at 15:08:27 UTC, Vadim Lopatin wrote:
>> On Friday, 8 September 2017 at 12:10:23 UTC, pezi_pink wrote:
>>> [...]
>>
>> It's known issue:
>>
>> https://github.com/buggins/dlangui/issues/278
>>
>> Not sure if there is any workaround.
>
>
> Ah, thanks for the reply. I did check the issues on git, obviously not well enough!
>
> That's a shame, it renders (no pun intended) DLangUI basically useless for my project :(  maybe I will have to get the debugger out ...

Fixed in v0.9.121

See example1 / TreeWidget for sample of adding / removing of items.

On Monday, 11 September 2017 at 09:00:36 UTC, Vadim Lopatin wrote:
> On Friday, 8 September 2017 at 15:39:21 UTC, pezi_pink wrote:
>> On Friday, 8 September 2017 at 15:08:27 UTC, Vadim Lopatin wrote:
>>> On Friday, 8 September 2017 at 12:10:23 UTC, pezi_pink wrote:
>>>> [...]
>>>
>>> It's known issue:
>>>
>>> https://github.com/buggins/dlangui/issues/278
>>>
>>> Not sure if there is any workaround.
>>
>>
>> Ah, thanks for the reply. I did check the issues on git, obviously not well enough!
>>
>> That's a shame, it renders (no pun intended) DLangUI basically useless for my project :(  maybe I will have to get the debugger out ...
>
> Fixed in v0.9.121
>
> See example1 / TreeWidget for sample of adding / removing of items.

Fantasic!  Thank you very much :)

On Monday, 11 September 2017 at 17:57:14 UTC, pezi_pink wrote:
> On Monday, 11 September 2017 at 09:00:36 UTC, Vadim Lopatin
>> Fixed in v0.9.121
>>
>> See example1 / TreeWidget for sample of adding / removing of items.
>
> Fantasic!  Thank you very much :)

Feel free to submit issues on https://github.com/buggins/dlangui/issues if something is unclear or does not work as expected.