Custom Widget :A class extending a Qwidget, I dont see anything...

[tonnot]

I test your code and I have nothing (a transparent widget)
But

1.- I have tested the class in 'old' style (creating the instance, givin size, etc) and It is showed. ( an empty white QTreeView)
2.- If I extend the A_table to Qpushbutton.... promote works fine, I see an empty space at my form, but I see a button when run. (so, it is ok).
So, finally, I cannot extend a basic QTreeView using promote ?

Thanks

[wysota]

Please attach a complete archive with all the source files of your test project.

[tonnot]

Here you are. If you see the code you can view the 'manually' added:

// This is 'manually' added.
   tabla=new A_tabla;
   tabla->setParent(ui->centralWidget);
   tabla->setGeometry(20,20,100,100);

// This is 'manually' added.
   tabla=new A_tabla;
   tabla->setParent(ui->centralWidget);
   tabla->setGeometry(20,20,100,100);

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which works.
Thanks

[wysota]

Geeezzz tonnot.... you're missing layouts in your ui...

[tonnot]

Wysota, Why I need layouts ?
This is the reason because a Widget extending Qtreeview is not viewed using promote ?
And :

1.- I have tested the class in 'old' style (creating the instance, givin size, etc) and It is showed. ( an empty white QTreeView)
2.- If I extend the A_table to Qpushbutton.... promote works fine, I see an empty space at my form, but I see a button when run. (so, it is ok).
So, finally, I cannot extend a basic QTreeView using promote ?

[Lykurg]

Geeezzz tonnot.... you're missing layouts in your ui...

You sound surprised.

Ok, if you want here is the code, simply a skeleton.
[...]

#include "a_table.h"
A_table::A_table(QWidget *parent) : QTreeView()
{ }

#include "a_table.h"
A_table::A_table(QWidget *parent) : QTreeView()
{ }

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Yeah, an incomplete one. You might want to pass the parent to the base class... That's why you don't see anything.

[tonnot]

Ok, it works.
And, as a newbie, Why? A_table is already a Qobject....
Thanks

[wysota]

You sound surprised.

I am surprised. I thought that after writing 200 posts one would at least know how to use layouts. At times like this my hands fall down and I want to sit down and cry.