linking of combox with lineEdit.

**Lykurg** · 24th July 2009, 08:54

Originally Posted by Devoraz

after closing the dialog. i would need to use case method with the combobox i think? as there are 8 choice to select.

After closing the dialog use QComboBox::currentIndex() or QComboBox::currentText() to determinate the box. Either use switch or if/else unless you don't have stored your nodes in a QList etc.

**Devoraz** · 24th July 2009, 08:58

okay first of all. to kickstart. i suppose i have to connect the combobox to the qlineEdit right?

i had look through the some examples and the QT Assistant. but i am still confuse of how to go about connecting it.

**Lykurg** · 24th July 2009, 09:03

Originally Posted by Devoraz

okay first of all. to kickstart. i suppose i have to connect the combobox to the qlineEdit right?

i had look through the some examples and the QT Assistant. but i am still confuse of how to go about connecting it.

Come on, what's the problem QCombobox::currentIndexChanged(const QString&) -> QLineEdit::setText()! REad about signal and slot mechanism.

**Devoraz** · 24th July 2009, 09:27

come on. i am very new to this QT library. i am dump to do this project for my Final Year of Diaploma. please be patience with me

**nish** · 24th July 2009, 09:31

Originally Posted by Devoraz

come on. i am very new to this QT library. i am dump to do this project for my Final Year of Diaploma. please be patience with me

then first of all stop using words that made us think you are exp. And use the newbie section..

**faldzip** · 24th July 2009, 13:50

hmm so i think your problem is quite simple:
1. You open a dialog with combo box and line edit
2. Then you edit this dialog and close it
3. After close you want to set the right bubble (yellow for example) with the right text.
Right?

If yes then:
1. If you have some custom dialog (your own subclass of QDialog) just make two methods for it: one to get the selected index and one to get the line edit text. I assume you use QDialog::exec() to open it, so after exec() just read those values and set the right bubble with right text calling your method which paints it (whith QPainter and so on).

2. If you have QDialog object and you set the ui to it (setupUi()) then you can get the values staight form ui object (Ui::SomeDialog).

**Devoraz** · 27th July 2009, 07:17

faldzip. i dont know how to get the selected index of the combobox.

**nish** · 27th July 2009, 07:22

QComboBox::currentIndex ()

**Devoraz** · 27th July 2009, 07:38

can i have an example of code for me try out or something.

**nish** · 27th July 2009, 07:48

brother... just for two minutes try to put yourself in our shoes.. first of all we still dont know what is your exact problem.. secondly you dont seem to be intrested in showing a bit your your code.. thirdly .. you dont know how to use the currentIndex...

seriously... i really doubt your exp. in programming... Did you jumped directly to Qt before learning C++ or flow charts even?? ... I dont want to be harsh.. but you would do yourself a favour if you start reading more of assistant.

or you can wait for our gurus for answers... i am out of luck...

**Devoraz** · 27th July 2009, 08:29

MrDeath. yes i understand. dun doubt my programming. i got all A for my programming module for my diaploma course. i've learn c# c++ htm and mp 8051.

but the problem here is QT library. i am really totally new to it. i am dump with this project for my Final Year Project. i myself is really struggling. i had done alot of change to my GUI.

if i were to show my codes. its a whole lot of things to show =X

i did try to understant the assistant. but it didnt work. i am doing this project on my own, my only hope is you guys from forum.

really need the help. alright. so what izzit that you dun understand of my problems?

**nish** · 27th July 2009, 08:33

ok... the very first process of solving a problem is to isolate it from the rest of the program.
please make a very small compilable program which reproduces your problem. I will not take more than 30 min to make one..

**faldzip** · 27th July 2009, 08:36

Originally Posted by Devoraz

can i have an example of code for me try out or something.

There are a lot of examples in Qt Examples & Demos, and a lot of descriptions of methods, classes and everything in Qt Assistant. Just run it and read some text!

**Devoraz** · 27th July 2009, 08:45

alright i will use the example codes to try.

**wysota** · 29th July 2009, 08:39

Guys, just reminding you we're dealing with a school project here. Remember about our policy on helping with school projects - only hints, no ready solutions. The guy has to learn and based on the content of this lenghty thread, he needs it. Foremost the "concept of programming" is required. The programming language is just a tool.