Need help for a TreeView

[Fheanor]

Looks like you have to use a TreeView with Rectangle Delegate on each line

[Arkning]

@Fheanor Thanks for the answer do you have a code example ?

[Fheanor]

I don't have an example that correspond to your example, but these are two examples of how you can use Delegate inside a TreeView.

• You can use the itemDelegate property of a TreeView . This example will change the color of each line:

itemDelegate: Rectangle {
       color: ( styleData.row % 2 == 0 ) ? "white" : "lightblue"
       Text {
           anchors.verticalCenter: parent.verticalCenter
           anchors.left: parent.left
           text: styleData.value // this points to the role we defined in the TableViewColumn below; which one depends on which column this delegate is instantiated for.
       }
}

• You can also define a special Delegate for each column of your TreeView like that:

TableViewColumn {
       id : someColumn
       role: "someRole"
       title: someRole
       delegate : Rectangle {
           ...
     }
}

Now you have to play with this to draw what you want

[Arkning]

@Fheanor Ok thanks i'll try I will let you know about my situation. Again thanks for the answers and your time !

[Fheanor]

You are welcome :)

[Arkning]

@Fheanor Hi, so I didn't manage to make it work, now just forget about the Rectangle thing, I just want to make a Treeview so can you help me ?

[Fheanor]

@Arkning You need to share what you try to do so we can help you. What is not working when you try to make a TreeView ?
This example that was linked before works perfectly.

[Arkning]

@Fheanor I have some assigning the model value, the example that you gave me the TableViewColumn part work but not the model one, Qt tell me that fileSystemModel doesn't exist. Actually I just want to add some "node" or p"parent" to my Treeview and of course some "children" I suppose it has a link with the model but I don't know how to do it. Hope it is more clear now. Thanks again for your time !

[Fheanor]

@Arkning
This example is in your QtExample folder.
Just open your IDE, click on Examples and then write : TreeView. You will see the project.

[Arkning]

@Fheanor I don't have Examples on my IDE... Where should it be on the screen ?

[Fheanor]

You can also create a TreeModel in C++ and then bind it to your Qml TreeView :

model: myTreeModel

If you don't understand how to bind model and view, have a look on this

[Fheanor]

@Arkning Do you use QtCreator ? Because there are Examples folders in it.
If you don't use it, download and install QtCreator.

[Arkning]

@Fheanor Yes I'm using QtCreator

[Fheanor]

@Arkning This is on the Welcome page of your IDE... There is an Example Button

[Arkning]

@Fheanor Ok I found it but how can it help me ? I don't see were they create parent or children.

[Fheanor]

@Fheanor said in Need help for a TreeView:

You can also create a TreeModel in C++ and then bind it to your Qml TreeView :

model: myTreeModel

If you don't understand how to bind model and view, have a look on this

[Arkning]

@Fheanor The problem is for now I only use Qml I'm not coding in C++ so do you know how to do it in Qml ?

[Fheanor]

@Arkning I don't know any way to create a TreeModel in Qml, sorry. I think you need to create your model in C++ if you want to use a TreeView

[Arkning]

@Fheanor Ok, anyway thanks for your time I hope I will find how to do it...

[Eddy]

Hi Arkning,

As Fheanor already suggested, you need to make a model.

To do it in Qt C++ you can follow The simple Tree model example to help you fully understand how it works.

You're lucky because It has been converted to QML

Hope it helps

Eddy