QT creator and Designer difference - Starting QT - c++

I am trying to learn the QT framework so that I could develop GUI based C++ applications using QT. I am currently using Windows 7 64bit . So far I have just downloaded the QT library from here. All the tutorials I came across use QT Creator and I only have QT designer.
My question is should I download QT creator ? if so which one ? Can I simply use forms created in QT designer in my visual studio 2010 console app ?? Any suggestions or links that might help would be appreciated

Qt designer is a part of IDE, it is used to generate a code for widgets(look and fill interface);
Qt creator is IDE;
If you used to work with Visual studio 2010, I advice you to download Qt plugin for it(http://qt-project.org/downloads), which allows to enjoy Qt library in VS (it provides Qt designer).
I have the expirience both with Qt Creator and VS 2010 plugin, difference is subtle.

From QT's own forum
QT Designer is for designing dialog's and Main Windows. QT Creator
is a full IDE for developing your programs It comes with an
integrated version of Qt Designer.

I'm asking for a good re-confirmation! (don't take it otherwise)..
As I'm quite new in the Qt platform, I've found it quite confusing!!
In Windows platform, you've:
Qt 5.4.1 for Windows 32-bit (VS 2012, OpenGL) which is a whooping 644 MB file!
& also the info about "Qt Creator" in download says:
Blockquote
Qt Creator 3.3.1 is included in the Qt 5.4.1 binary packages.
If you need a standalone installer, please select the file according to your operating system from the list below to get the latest Qt Creator for your computer
--- this a layman would understand as Qt Creator is the GUI of Qt IDE & also you need to download "Qt 5.4.1 for Windows" which is a whooping 644MB !!
so, is this the case?
or I've to download just the Qt Creator for my work?

Related

Unable to create "Qt Gui Application" with Visual Studio 2010 and Qt version 4.8.0

I am building a GUI application in which I have to use Visual Studio 2010 build tools. I was told that the correct qt version to use with this VS version is 4.8. I've downloaded Qt 4.8.0 using this link:
https://download.qt.io/archive/qt/4.8/4.8.0/
And I made this version the default in the VS Qt options menu. However, when I try to create a new visual studio project, all of the module options are greyed out.
Which in turn makes it impossible to create the project because upon clicking "next", the "Finish" button is also greyed out. Any Idea of what's going on??
With pre-compiled binaries (that is, you don't have to compile qt yourself) you can use Qt 5.5.1 with VS2010 that you can get from here.
After that, i would create a simple project using qmake and specifying
TEMPLATE = VCAPP
that will tell the qmake (see docs) to generate a .vcprojx file that you can use from VS2010.
Latest Qt version that supports VS2010 is 5.6.3 IIRC, however mind you that even that version is now EOL. (March 2019).
You should try to upgrade to 5.9 or 5.12 (however i am not sure that VS2010 will be able to support those since they rely pretty heavily on c++11 that VS2010 supported very lightly)
P.S. If you'r stuck with Qt4 then greatest version is 4.8.7 (VS2010 supported) that you could get from here

Which Qt to download?

I am new to C++ and have been working with MS VISUAL STUDIO 2010 Express. However, I am in need to shift to Qt as my university recommends. Unfortunately, the qt.nokia.com is redirecting to another site http://qt.digia.com/.
Since everything in that site is not free, I found the following link called "Qt Open Source Version". Is this is the site to download Qt?
When I go there, I can see various options, which means number of downloads. I have windows 7 ultimate and got visual studio 2010 express installed in my machine. But, this site got number of windows downloads. I prefer the one which claims to come with the Qt IDE (Qt Creator??). If you need further more information, I will be using this Qt GUI C++ applications with OpenCV.
I have already installed OpenCV and it works with VS so if you can, please tell me how to set it up with Qt as well.
Please help me to download the correct version of Qt. Thanks
Answering to these kind of question is always hard and dangerous!
I know you had experiences with VS but
I'm going to offer you to choose MinGW instead.
Download link
qt-project is the correct place to get open source Qt.
There are prebuilt binaries of Qt 5.0 for VS2012, but if you want to use Qt 4.8 with VS2012 you'll need to compile it yourself, as there are no prebuilt binaries for VS2012 (yet?). Compiling Qt is not difficult, just open command prompt for VS2012, run configure --help to find out how you can customize your Qt build. Then run configure with appropriate parameters, then nmake.
If you decide to use Qt Creator as an IDE you are welcome to do it - Qt Creator can compile projects using different compilers, including VS2012 compiler. But in order to debug projects compiled with VS2012 compiler you'll either need to use VS2012 or install Debugging Tools for Windows (which Qt Creator will find and use to debug VS2012-generated executables).
http://qt-project.org/downloads
Qt 5.0
Select the file according to your operating system from the list below to get the latest Qt 5.0 for your computer. The binary packages include Qt 5.0.2 libraries and Qt Creator 2.7.0
Qt 5.0.2 for Windows 32-bit (VS 2010, 485 MB)

Qt installation

I am completely confused in installing Qt.
Do I need to download both Qt creator and Qt SDK or Qt.exe?
I have Visual Studio 2010 and Code::Blocksin my PC. So, how can I link if any one of the Qt XXXX listed above with VS-2010 or with Code::Blocks?
Please help
You can download QT creator from http://qt-project.org/downloads for windows you will get a .exe (you will find different .exe for VS Studio and mingw, so you can use what you prefer), once you install it you got
Qt libraries, prebuilt for a particular development platform (operating system
and compiler)
Qt Creator integrated development environment (IDE)
Basic development tools, prebuilt for a particular development platform
Documentation
Some more help.
You can start Qt Creator directly after the installation by selecting the option
on the last page of the installation program. You can start most of
the development tools, such as GUI designers, compilers, and debuggers
directly from Qt Creator. You can also access the installed documentation and
example applications from Qt Creator.
You can open most example applications in the Qt Creator Welcome mode to build
and run them. Additional examples can be opened by browsing
(install_dir)/(version)/(compiler)/examples.
To develop a Qt application, you need to set up a project. Qt Creator contains
wizards that guide you step-by-step through the project creation process. The
wizards prompt you to enter the settings needed for a particular type of project
and create the necessary files for you. To start, select File > New File or
Project.
The wizards create projects that use the Qt build tool, qmake. It is a
cross-platform system for build automation that helps simplify the build process
for development projects across different platforms. You can modify the build
and run settings for qmake projects in the Qt Creator Projects mode.
Qt Creator provides support for building, running, and deploying Qt applications
for different target platforms, or using different compilers, debuggers, or
Qt versions. Kits define the tools, device type and other settings to use when
building and running your project.
The Qt installation program adds the installed Qt version
((install_dir)/(version)/(compiler)/bin/qmake) to Qt Creator and creates a kit
that specifies the installed Qt version and compiler. To use the kit, add it for
your project in the Qt Creator Projects mode. Then select the kit in the Kit
selector before you build or run the project.
To compile C++ Qt applications by some other means, add
(install_dir)/(version)/(compiler)/include to your build tool's search path
for include files, and (install_dir)/(version)/(compiler)/lib to the search
path for libraries.
To work with Visual Studio 2010, you can download the installer "Qt 5.0.1 for Windows 32-bit (VS 2010, 481 MB)", or just download the source code and build it yourself (you'll need to do that if you want 64-bit versions of the libraries).
"Qt Creator" is Qt's IDE, so you don't need that. You just need the "Qt Library" to use Qt with other IDEs. For Visual Studio, you'll also want to download the "Visual Studio Add-in," which allows you to view Qt data structures in the debugger.
The free downloads are available at qt-project. Commercial downloads are on digia.

installing Qt for VS2010

after finding that its too hard to write GUI applications with WIN32API today im going to learn Qt. so I installed qt as follows.
first I installed VS 2010 express. its OK.
then downloaded Qt libraries 4.8.3 for Windows (VS 2010, 235 MB) from http://qt-project.org/downloads and installed it as a normal software. (in C:\Qt\4.8.3) it automatically installed assistant, designer ... ect.
then downloaded Qt Creator 2.6.0 for Windows (51 MB) from http://qt-project.org/downloads and installed it also as a normal program.
now in qt creater when I try to creat a Qt project it says that no valide kits found.
here are some screenshots of the issue im facing.
what should I do now to start qt. please I need someones help to procced.
You don't need QtCreator AND visual studio.
QtCreator is Qt's own IDE and uses g++/mingw as the compiler (included in the download).
Qt includes QtDesigner - the graphical UI designer that you can use with visual studio or QtCreator.
If you want to use VS, install the qt-vs-addin and download the VS builds of the Qt libs.
If you want to use QtCreator, download the mingw builds of Qt.
Or in both cases you can download the source and build it from scratch using wither QtCreator or VS.
edit: You can make QtCreator use the VS compiler backend - in which case you should download the VS build of Qt. Personally I have never done this - if you are using VS then you may as well use the VS ide.
edit2: The free express version of VS can't use plugins - so its a bit of pain to use with Qt. In this case you should probably use QtCreator.

Cannot open include file :'stddef.h' No such file or directory found error when creating a sample Qt application

stddef.h file is there in installed Nokia Qt SDK include folder, but still I am getting compile error on running Qt Simulator. Any ideas?
Thanks in advance!
This error message happened with me when I tried to compile for Windows with the VS2008 version of Qt, but Visual C++ 2008 was in fact not installed to my computer. (VS2010 was, but that didn't matter.)
I have the following ideas for you:
Try installing Visual C++ 2008
or
Try using MinGW instead of VS2008
The Qt simulator itself is not of much use though, so don't feel bad if you don't manage to make it work. Running your application on the target device itself is the best, and for debugging purposes, you can also compile your stuff for desktop OSes.
Some details to "Try using MinGW instead of VS2008": It is not enough having Visual Studio 2008 Visual C++ (compiler) installed. You'll need the Windows platform SDK too. But there is an easier way to compile a Qt application under Windows: MinGW
If having Qt Creator already installed (otherwise: http://qt.nokia.com/downloads --> Qt_SDK_Win_online_v1_1_3_en.exe --> custom installation --> Qt SDK / Development Tools / Qt 4.7.4 / **Desktop Qt 4.7.4 - MinGW):
Start Qt Creator
Menu: Help | Start Updater
Package manager (Maintain Qt SDK)
In the tree view : Qt SDK / Development Tools / Qt 4.7.4 / Desktop Qt 4.7.4 - MinGW
--Harald-René Flasch (aka hfrmobile)