I'm developing an application for the Mac, and I'm wicked new at this - what would be the best way to distribute the Qt Framework so that I'm not impacting an already existing framework, and so that my App.app picks up the libraries. I'm also using boost, so I'm curious how a simple bundle works with libraries.
You can use macdeployqt tool that comes with Qt installation. It will copy the needed framework from the Qt installation into your application bundle.
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I need to create windows service from installed components from the installer created with the Qt Installer Framework. Is there any way to handle for each of the components has been installed or not and create a windows service for them. Found this article but it`s not bringing an example.
I've created a Qt calculator app using Qt Creator 3.6.0 purely in C++ code (I didn't use Designer)
I would like to know how to use Qt to make it installable for publishing.
I ran the app in both Release and Debug modes and have both folders of the two.
I also downloaded and installed Qt Installer Framework Opensource 2.0.1 for my Qt Creator 3.6.0 (the IDE I use for Qt).
And I also have the .dll files needed to run the .exe file.
I've searched the Web for it. But since I'm a novice in Qt I can't do the works properly, or I don't understand. (They seem complicated)
Now, is there any straight forward method to use an installer for the app to make as platform independent as possible?
If so, what installer? And how to do the process? This is the first time for me.
I am new to Qt, and I am working in Windows 7.
When I try to run my application directly, I see an error about missing some DLLs. I tried to fix them, but I could not (I tried to build statically).
Is there any correct solution?
My question is:
If I want to run my Qt application on other computers, what do I need? For example, for a .NET application we need to install the .NET framework on the target computer, but what about for Qt?
I searched for its SDK and found a SDK that was about 1.6 GB! Does this mean every time I want to install my application I should install a 1.6 GB sized SDK? That's far too bad.
Thanks.
You have to distribute your application with needed libraries.
If your application is running on Windows you can follow this guide: Deploying an Application on Windows. You can find needed libraries as dll in bin directory inside SDK. A basic Qt gui application needs at least QTCORE4.DLL, QTGUI4.DLL and, if you are using Qt Creator, MINGWM10.DLL. You can leave these libraries in the same directory as you application.
You can't link statically against Qt unless you have built the libraries in that configuration (which you won't if you've just downloaded the pre-built SDK). Be aware that if you do want to link statically there are licensing implications for some components.
If you have built a release configuration then you will need at least the libraries Alessandro mentioned, QtCore4.dll and QtGui4.dll. Depending on the other parts of the library you're using you may also need QtXml4.dll QtWebkit4.dll, QtXmlPatterns4.dll and possibly Phonon.dll. Check that you are building a release configuration rather than a debug configuration, as this won't run as it needs the Visual Studio debug runtimes, which you can't redistribute. If you are in doubt which dlls you need then use DependencyWalker to find out (note that this doesn't show Phonon.dll as it is loaded later).
Generally you'll only need about 4-6 of the dlls, you won't need the whole SDK.
Please consider that many applications use Qt, you have some real chance the DLLs are already installed. Anyway, beware of MSVC dependencies: we had some real nightmare deploying applications on some server, partly related to a policy switch from VS2005 to VS2008. Alessandro already given a good resource: see also this previous post.
If you're working with Qt5, besides the .dlls mentioned by the first answer, you must also add the platforms/ folder from the bin directory inside the SDK.
I just have a little question about running Qt created apps on different operating systems.
As a normal user do i have to install Qt framework to run Qt apps ?
I mean i've created Qt app using Windows , then i made a build for Linux .
Do i need to install the Qt framework on the Linux pc inorder to run that app ?
Or there is a way to package all the needed libraries into the app installer .
Best Regards
You can deliver the dynamic libs you need with your application, as it's described here:
http://doc.qt.io/qt-5/deployment.html
Since Qt is not a system library, it has to be redistributed along
with your application; the minimum is to redistribute the run-time of
the libraries used by the application. Using static linking, however,
the Qt run-time is compiled into the executable.
Depends what you mean by 'framework', you will need the runtime libraries, unless you paid Nokia for a license to allow static linking.
For Linux, I think you would generally ensure that the Qt packages have been installed during installation (i.e. make them a requirement of the package you provide). Under Mac OS you would need to package the .so (shared objects) with your application. Under Windows you do the same (provide the .dlls) and install them with the application (not in the system folders).
The issue with static linking that #cbamber85 is alluding to, is the conformance with the LGPL licence where it's legal to link to the libraries at runtime but not at compile time (i.e. use the .so/.dll but not the .a files).
I am using both Qt Framework and QuickFIX engine to create a financial application with GUI.
My problem is that when I compile a program that implements QickFIX engine and Qt Framework, it gives me a compilation error: it doesn't find some header files in MinGW (socket.h, inet/in.h, etc)
I am on Windows 7 and I know that to use sockets you must use winsock.h and so on, but the problem is I have Visual C++ express edition and it's not supported by Qt, so I used Qt Creator and since I have an open source of Qt, QuickFIX engine uses the header files of Linux (socket.h, etc) rather than windows. So it gave me an error.
Please can you suggest me a solution?
I use Visual Studio Express 2010 with Qt. You will need to build Qt with it. When you configure make sure to specify Visual Studio 2010 as the make spec.Last time I built it got hung up on a couple of projects. To get around this you need to clear out some temporary files that Nokia packaged in the installer for some reason. Just google the error for details.
Once you have Qt built you ought to be able to qmake -tp vc your project and then load up the generated Visual Studio project file.