C++ Qt 21 - QTreeWidget 

Still helpful in 2023, really appreciated

Thank you good sir for making these tutorials, really helped me a lot.

Great tutorials! And if you want an easier way for prototyping, Press alt + enter on your prototype to insert a definition to your sourcefile and jump to it. Refactoring with qtcreator is so easy

loving these tutorials thanks so much!!! can't wait to make it to threading!! I have to take a break from these or i'll forget about the world around me!!

Best of the web stuff! Thanks Brian!

The most concise tutorial on Qt Tree Widget... Simply awesome... Thanks for sharing..

First of all: Thank you Brian!

Great Tutorial. Thank you :)

your vids R simply awesome! thanks for that

thank you!!! You have a gift to instruct :)

Very good tutorial, thanks!

Excellent tutorials.

Thanks, very good

thank you a lot

Thanxs!

Not sure why but mine insists that I include in Dialog.h

I'm pretty confused :/

@Notes90 I think you have to add in manually. I got the same problem so I just add it manually, it's not a big stuff i reckon. Have fun !

how to add gridlines inside the treeview .same how it looks like .if u open the .ui window on the right side ...?? please if anybody knows tell me ..thanks inadvance

thanks you

Thanks

A good last minute explanation would be how to "get" a root/parent from an existing treeWidget, using only the string name/combination and touching on duplicate record management.

You're right about the religous Qt/Java thing though. And besides, classic Java UI's are horrific. If you want a good looking cross platform application with java you want to use a GUI framework like Qt anyway

I always have to manually add include QtCore and QtGui directives, how can i have them always while creating new dialog ?

I have a question. How do we construct roots that have different children? I mean adding children to the root node, can't it be done outside AddRoot function?

For those using Qt5+ replace QtGui with #include

For the record, it is very poor style to create a function named AddRoot that does anything other than only adding the root. Either (1) the root nodes should be moved out of the local function scope or (2) the function should be renamed "AddExampleTree" (or whatever) instead of "AddRoot" so that it does not mislead the user about what it actually does. The fact that few tutorials ever give the proper amount of attention to matters of clarity and style is probably a major contributing factor in why so many programmers out of school have such profoundly poor code clarity and style. It is not enough for code to merely work, the source code should also be as conceptually correct and clear as possible and have no extraneous side effects. Anyway (concerning AddRoot), if you have only one root and you want to move it outside of the local function you can add "QTreeWidgetItem *rootItem;" to the dialog header file and call AddRoot in the Dialog::Dialog(QWidget *parent) just as before and then you will have separated the root out of the local scope of AddRoot so that you can remove the AddChild calls in AddRoot that have been included in it in poor taste. Likewise you can extend the idea to having multiple root members using either a fixed number of named root pointer variables or a dynamically growable data structure such as vector from STL for example.

Could you please add a tutorial on how to create TreeView of XML File

i changed the example somewhat: look at pastebin /fVH6J3D2 add the .com

in void Dialog::addChild in QTreeWidgetItem *itm = new QTreeWidgetItem(); need a parent? if not, where did it deleted?

On this line: "QTreeWidgetItem *itm = new QTreeWidgetItem( ui->treeWidget );" It says that 'ui' was not declared. =/