How and where to start Qt5

JKSH

Thank you all very much. You are really nice guys and I'm happy to be a member of here programming in Qt :)

You're welcome! :)

I like to first learn to write code for creating iOS and Android apps (applicable on smartphones). It is my first goal. After that I like to create programs for MS Windows.

I think it's easier to learn how to create programs for Windows than for Android and iOS. Because of this, I recommend you first spend a few days learning how to build a simple Qt program for Windows. This experience will help you learn how to write and build Qt programs for Android and iOS.

This is the sequence I recommend:

Follow http://doc.qt.io/qt-5/gettingstartedqt.html closely. This teaches you how to use the Qt Creator IDE and build a small program for Windows.
Follow http://doc.qt.io/qt-5/androidgs.html. This teaches you how to set up your system for creating Android apps.
Follow http://doc.qt.io/qtcreator/creator-mobile-app-tutorial.html. This teaches you how to build a small program for Android and run it on your device.
Follow http://doc.qt.io/qtcreator/creator-developing-ios.html. This teaches you how to set up your system for creating iOS apps.
Go back to #3 and run the same program on your iOS device. (Note: You need to use OS X to develop iOS apps)

Another note: In #1, you will use the C++ language and the Qt Widgets module. In #3, you will use the QML language and the Qt Quick module. Qt Widgets is easier for beginners to learn (especially if you already know C++), but Qt Quick is more suitable for mobile apps.

Dear JKSH suggested a start point. Now, for example, how to start from http://doc.qt.io/qt-5/index.html and then find a link that points to http://doc.qt.io/qt-5/gettingstartedqt.html?
That is, it's not clear how to use the documentation, at least in my experience.

The Qt documentation uses a reference format. As you have found out, you shouldn't try to read it from start to finish like a book.

Instead, use a search engine to find information about the topics that you are interested in. For example, you can fo to http://doc.qt.io/qt-5/index.html and type "getting started" into the search box.

First I want (if you agree) to start from http://doc.qt.io/qt-5/index.html (because I think I should be familiar with Qt that what the Qt is at all) then find a link there that leads to http://doc.qt.io/qt-5/gettingstartedqt.html? (if it's good for my first directions that is being able to write iOS and Android apps).

Personally, I think http://doc.qt.io/qt-5/index.html is not a good place to start. It leads to too many advanced topics, but It doesn't lead to http://doc.qt.io/qt-5/gettingstartedqt.html easily.

tomy

I thank both of you very much. I'm sorry for asking those many questions.
According to what I understood from your explanations, I'm going to do the following works, respectively. If any work is not suitable for me or you don't recommend it to me, please aware me of that.

1- First I go to qt-unified-windows-x86-online.exe. and install Qt creator in default mode. Although I have MS VS 2015 licensed installed on my Windows machine, but I don't like Qt creator as an add-in to it. I like to have Qt creator as a complete IDE on my system.

2- Then after installing Qt creator I go through number 1 to number 5 of the last post of JKSH. I try to completely read and do the tasks/codes written there.

3- Then, I install a Mac OS on as virtual machine on my Windows machine. I think I should install another Qt creator on it to begin to write codes for iOS. Am I right?

4- And at the end, if I have any problem or question, I'll try to create a new thread about that or post the matter here.

Do you guys agree with these please?

? Offline

Don't know about your point number 3 (I don't develop for OS X and iOS) but the rest sounds like a good plan. And don't hesitate to ask the forum. Good luck, young Padawan! ;-)

mrjj

" I'm sorry for asking those many questions."

Well we kind lurk around here hoping people will in fact, ask questions :)

One note for 1:
You can use VS with Creator. as its compiler. So its also a full solution.
That said. Its less fuss just to use mingw
and install and have all just work out of the box.

tomy

@Wieland said:

Don't know about your point number 3 (I don't develop for OS X and iOS) but the rest sounds like a good plan. And don't hesitate to ask the forum. Good luck, young Padawan! ;-)

Thanks. I appreciate your helps :-)

@mrjj said:

" I'm sorry for asking those many questions."
Well we kind lurk around here hoping people will in fact, ask questions :)

Thank you. :-) That's very kind of you.

@mrjj said:

One note for 1:
You can use VS with Creator. as its compiler. So its also a full solution.
That said. Its less fuss just to use mingw
and install and have all just work out of the box.

I'm sorry I didn't understand the above part completely. I'm not an English native speaker. :(
Do you mean that I can use Qt creator with VS 2015? Is it like an add-in item? Can it offer all of the stuff the Qt creator as a separate program offer? If so and you recommend it to me, where and how can I install it on my VS please?

mrjj

note part 1:
I was trying to say that using visual studio can also be good.
However, vs 2015 is so new that im not sure there is good support yet.
So I suggest just use the standard setup so U can get going fast.
sorry for the confusion.

tomy

@mrjj said:

note part 1:
I was trying to say that using visual studio can also be good.
However, vs 2015 is so new that im not sure there is good support yet.
So I suggest just use the standard setup so U can get going fast.

OK. I tried to install Qt creator in its normal way (connecting to the Qt resources) but faced an error. It's in the link below:
http://uploads.im/QXBsp.png
Is there any other way to download that Qt creator completely as a file please?

@mrjj said:

sorry for the confusion.

Not at all, that's fine :-)

mrjj

hi
http://download.qt.io/official_releases/qt/5.5/5.5.1/qt-opensource-windows-x86-mingw492-5.5.1.exe
Note: this is full packet and do not use visual studio but mingw compiler.

tomy

@mrjj said:

http://download.qt.io/official_releases/qt/5.5/5.5.1/qt-opensource-windows-x86-mingw492-5.5.1.exe

Thanks. I'm downloading it now. But one small question! In the normal method (downloading through Qt) that installation would occupy about 3.8 GB on the computer but this file's size is even less than 1 GB! should I update/add the missed stuff to that smaller one after installing?

mrjj

hi u get a maintenance tool that can update stuff/add elements.

tomy

Thank you.

mrjj

@tomy
as final remark.
this book
http://www.bogotobogo.com/cplusplus/files/c-gui-programming-with-qt-4-2ndedition.pdf
i found pretty ok when starting with qt.
Its for qt4 but much of it still the same in Qt5.5.

SGaist

To develop for iOS and OS X you will indeed need to install Qt Creator on your Mac machine (be it virtual or not) but you will be using the same for both platform. Xcode is mandatory to develop for OS X and iOS. It provides the SDKs and emulators needed as well as the software stack needed to connect to your device and make your application available through the App Store.

tomy

@mrjj said:

@tomy
as final remark.
this book
http://www.bogotobogo.com/cplusplus/files/c-gui-programming-with-qt-4-2ndedition.pdf
i found pretty ok when starting with qt.
Its for qt4 but much of it still the same in Qt5.5.

I have that book but haven't read it still! I like to start straightly with Qt5. Anyway, thanks for your remarks :-)

@SGaist said:

To develop for iOS and OS X you will indeed need to install Qt Creator on your Mac machine (be it virtual or not) but you will be using the same for both platform. Xcode is mandatory to develop for OS X and iOS. It provides the SDKs and emulators needed as well as the software stack needed to connect to your device and make your application available through the App Store.

Thanks, these are great info. Now I've VmWare workstation containing Win XP, Win 10, Linux(Ubuntu) and FreeBSD installed on my Win 7 machine. I'll add another virtual machine (the Mac OS) on it before starting developing iOS apps.
Thanks. :-)

tomy

Hi guys,

Along the way I chose for starting to learn Qt 5, I went to create a Qt Quick Application in here: http://doc.qt.io/qtcreator/qtcreator-transitions-example.html
Now one of my problems is that I cannot find that (Export) button (said in item #11 of Creating the Main View section of the above link) in the navigator pane on my Qt creator IDE :-(
Can anybody please help me?

Charby

@tomy This button is aside the "eye" button for each element listed in the navigator pane.
In the example, in the bottom left, you will see the navigator panel. The panel contains Item which contains "Icon" and at the end of this "Icon" row you will find the toggle property export and toggle visibity controls.
Hope this helps. If not just send me a screenshot and I will return it to you with a marking.

tomy

@Charby said:

@tomy This button is aside the "eye" button for each element listed in the navigator pane.
In the example, in the bottom left, you will see the navigator panel. The panel contains Item which contains "Icon" and at the end of this "Icon" row you will find the toggle property export and toggle visibity controls.
Hope this helps. If not just send me a screenshot and I will return it to you with a marking.

Thanks for the reply.
I retried that application creation for 5 times from beginning to the end, but neither that export button appeared nor my code (the one below) is exactly like this (http://doc.qt.io/qtcreator/qtcreator-transitions-mainform-ui-qml.html) :-(
I don't know how I can learn Qt from the documentation if I have those many problems at the first step! :-( Very disappointing.

import QtQuick 2.5
import QtQuick.Controls 1.4
import QtQuick.Layouts 1.2

Item {
id: item1
width: 640
height: 480

property alias button1: button1
property alias button2: button2

Image {
    id: icon
    x: 10
    y: 20
    source: "qt-logo.PNG"
}

Rectangle {
    id: topLeftRect
    width: 46
    height: 55
    color: "#00000000"
    radius: 6
    anchors.left: parent.left
    anchors.leftMargin: 10
    anchors.top: parent.top
    anchors.topMargin: 20
    border.color: "#808080"
    
    MouseArea {
        id: mouseArea1
        anchors.fill: parent
    }
}

Rectangle {
    id: middleRightRect
    x: -9
    y: -7
    width: 46
    height: 55
    color: "#00000000"
    radius: 6
    anchors.right: parent.right
    anchors.rightMargin: 10
    anchors.horizontalCenter: parent.horizontalCenter
    border.color: "#808080"
    MouseArea {
        id: mouseArea2
        anchors.fill: parent
    }
}

Rectangle {
    id: bottomLeftRect
    y: 1
    width: 46
    height: 55
    color: "#00000000"
    radius: 6
    anchors.left: parent.left
    anchors.leftMargin: 10
    anchors.bottom: parent.bottom
    anchors.bottomMargin: 20
    border.color: "#808080"
    MouseArea {
        id: mouseArea3
        anchors.fill: parent
    }
}

}

Apparently uploading images to the posts is not allowed so I uploaded my design page of the IDE of that code here: http://uploads.im/ip2hb.png

JKSH

@tomy said:

I uploaded my design page of the IDE of that code here: http://uploads.im/ip2hb.png

The "Export" button is a new feature in Qt Creator 3.6. It looks like you are using Qt Creator 3.5 (which is the version that was bundled with Qt 5.5.1)

If you want to use that tutorial as a starting point, you have 2 options:

Use the older version of the documentation. In Qt Creator 3.5, click Help -> Index and search for "Creating a Qt Quick Application", OR
Go to http://www.qt.io/download-open-source/ and download Qt Creator 3.6 (Note: This means you will have 2 copies of Qt Creator on your system)

eureka

As a rank beginner myself I'm following this thread with some interest.
Please view this post as beginner's notes to add to advice you receive from experts.

I had to jump through the same hoops in getting Qt 5.5.1 up and running.
Recently I started on my Qt 5+ learning curve by first installing the older version of Qt 4 from Ubuntu Software Centre. But I soon realised that I needed Qt 5.5.1.
So I uninstalled all older versions of Qt to avoid conflicts and started afresh.
It seems that you are on Windows 64 and previously you installed Qt 5.1.0.
My experiences are on Linux Ubuntu 14.04 32bit.
However I see that you have installed several OS virtual machines including Ubuntu so you could use Ubuntu VM to try the following Qt 5.5.1 installation workflow.

http://softmemos.blogspot.co.uk/2015/11/qt551-on-ubuntu-1404-at-virtualbox.html

Note: VirtualBox is similar to VMWare.

I followed just Step 2A: The easy way
and Qt 5.5.1 was installed successfully in directory /opt/qt55 (I didn't use /opt/qt5.5.1 as suggested).

More details here on Qt 5.5.1 PPA installation on Ubuntu ..
https://launchpad.net/~beineri/+archive/ubuntu/opt-qt551-trusty

After installation run terminal commands

qtchooser -print-env
and
qmake -v

Now since I wanted Python bindings and to use eric6 Python IDE I next installed PyQt5.
https://www.riverbankcomputing.com/software/pyqt/download5
Prerequisites .. qscintilla and eric6 installation advice found here ...
http://stackoverflow.com/questions/30730288/how-do-i-compile-qscintilla-and-eric6-on-linux

After all this I now have under Applications > Programming these launchers

eric6
Qt 5.5 Assistant
Qt 5.5 Creator (this is Qt Creator 3.6.0 based on Qt 5.5.1)
Qt 5.5 Designer
Qt 5.5 Linguist

I use Sublime Text 3 as my editor.

eric6 launches Qt 5.5 Designer from its IDE.
...

Regarding getting into Qt 5.5.1 I refer to examples in Qt Creator to get an idea of the app layout.
Qt 5 + documentation does seem to be scattered around so it helps to keep notes.
I use CherryTree from http://www.giuspen.com/cherrytree/ as notes manager.
...

This book can be added to your reading list.
https://qmlbook.github.io/

tomy

Thank you very much eureka for your comprehensive explanations. I want to firstly go for Qt on Windows. Some later time I may go for it on Linux. At that time I will follow and do your instructions carefully. :-)

Thank you JKSH.
I went for your link and the system is downloading it. But apparently this one is also Qt creator 5.5! Further more, I had tried downloading the Qt using that file before. And I had faced an error when downloading. The error at the time was: http://uploads.im/QXBsp.png
But this I hope it can be downloaded successfully.

If that version be downloaded, is it the most recent version (Qt creator 3.6) please?