I have scoured the internet for information regarding the installation process for plugins into Qt Designer and I have found no helpful/relevant information.
The plugin I want to install is the echo plugin.
I have also looked through the Qt Designer program files and found the echoplugin folder but have no idea how to install it. Here is the file location:
C:\Qt\Examples\Qt-5.5\widgets\tools\echoplugin
This holds the following file types; Qt Project Files, C++ Header, C++ Source and JSON
System Information
Windows 10
PyQt4
Qt Designer 5.5.0
Official documentation describes it very well.
To install plugin for Qt Designer or Qt Creator you need to place the plugin to plugins\designer directory.
For Qt Creator it is located in it's bin directory.
Qt Designer is a part of Qt installation so directory will be QTDIR\plugins\designer where QTDIR is Qt installation path (for me it is "E:\DEV\Qt\5.5\msvc2015_desktop_shared" and full plugins path is "E:\DEV\Qt\5.5\msvc2015_desktop_shared\plugins\designer").
One important thing - Qt Designer / Qt Creator and the plugin must be compiled using the same compiler version. You can not install plugin compiled with MSVC 2015 to Qt Designer compiled with MSVC 2013!
Edit:
I am using C++ version of Qt.
It looks like echo plugin is not a plugin for Qt Designer / Qt Creator.
Related
I am using FileDialog from Qt.labs.platform 1.1 on win 10 in Qt creator, compilator I use is Desktop Qt 5.15.2. MinGW 64 bit.
In the debug mode is working everthing fine but when I change to release mode I get following error in from the compilator:
QQmlApplicationEngine failed to load component
qrc:/main.qml:6:1: module "Qt.labs.platform" is not installed
I tried things like clean and rebuild or restart the computer and also change the number of import version but nothing helps. Any ideas how to solve that, please?
Check folder, where you are building your release (where *.exe is generated):
does it contains some Qt's *.dll's?
If yes: there is two ways to resolve your problem:
Remove all Qt *.dll's and run your application from Qt Creator (then Qt Creator will take all Qt *.dll's from folder, where Qt is installed).
Or add all needed Qt *.dll's with correct folder structure to folder with your release *.exe (to do it for Windows release use windeployqt tool: https://doc.qt.io/qt-6/windows-deployment.html )
Why you have such error from the compilator?
Because you have some Qt *.dll's in your release folder (beside the *.exe), but not all needed (e.g. you have only Qt6Core.dll). So Qt Creator will find this dll and will try to find other dll's in your release folder. Qt Creator will not check its installation directory to get dll's.
But if you have no Qt *.dll's in your release folder, then Qt Creator will find them in its installation directory.
I built the sources of Qt5.8 with the option ./configure -opengl desktop
Then, I did a make and finally sudo make install. Now I changed the .profile file as pointed here: http://doc.qt.io/qt-5/linux-building.html
But I have a question: How can I start now qt creator ide?
It seems you're looking for qt creator, which isn't bundled in the qt sources and must be compiled separately, however if you want qt creator alongside with your new qt build, download the qt creator alone and install it, after that open the qt creator, go to Settings -> Build & Run -> Qt Versions , from there you can add new qt versions, just point to qmake which is located in your new qt installation (Probably /usr/local/qt5/bin/qmake) , now add a new kit via Kit's tab and then you can use your newly installed qt with qt creator.
MMMMMM#unbuntu:~/QT/test4Qml$ qmlscene main.qml
qmlscene: could not exec '/usr/lib/x86_64-linux-gnu/qt4/bin/qmlscene': No such file or directory
My Qt Development Environment does not have qmlscene. I googled it, and I only found *.deb. How should I do it?
As far as I know, Qt is not installed by default in /usr/lib/x86_64-linux-gnu/qt4. That directory is the default path when linux detects a dependency which requires Qt.
Where did you installed Qt? How did you installed it? Did you set the PATH environment variable to where Qt binaries are installed?
Usually, you have to follow the next steps:
1.- Install the the basic requirements for building Qt applications.
2.- Download Qt. I recommend Qt 5 using an offline installer. Otherwise, you'd need to compile from the source. Here you have a list of older versions of Qt.
3.- Set the environment variable PATH to the directory where you Qt bin directory is installed.
I have some difficulties with QT, which I need for school for some GUI applications.
I have recently done these steps:
1) mingw-get-inst-20120426.exefrom SourceForge installed to C:\MinGW\ with default settings.
2) Qt libraries 4.8.4 for Windows (minGW 4.4, 317 MB) from QT Project installed to C:\Qt\ with default settings. Here an error occurs:
!!!There is a problem with your MinQW instalation
!!!g++ not found in c:\MinGW\bin\
!!!Do you still want to continue? Yes
I checked c:\MinGW\bin\ there is no such file
3) Qt Creator 2.6.0 for Windows (51 MB)also from QT installed to C:\Qt\gtcreator-2.6.0 with default settings
4) Run the QT IDE
5) Open project or create new project. Another error occurs here
!!!No valid kits fond.
Qt Creator uses the invalid kit Desktop to parse the project.
6) Open Options->Build & Run->Kits (But I don't know how should I set Kits and where to find them).
7) Can you also help me, how to set Qt version
(Options->Buid&Run->Qt Version)? Where do I find qmake.exe?
I also didn't find how to create GUI Application. There is no such option in New File or Project...
Thanks for help.
That is quite tricky ;)
Precompiled Qt (MinGW) is only win32 (not win64).
Precompiled Qt is compiled with MinGW-g++ 4.4 and won't work with other.
You have to download this one:
http://get.qt.nokia.com/misc/MinGW-gcc440_1.zip
//// Edit: With this version of MinGW, gdb won't work (it's not python-enabled). Although QtSDK is depracted (and you won't find it on qt-project.org), I highly recommend downloading this online installer and, during the selection of components mark only MinGW. It will come with folder named "pythongdb".
http://www.developer.nokia.com/info/sw.nokia.com/id/da8df288-e615-443d-be5c-00c8a72435f8/Qt_SDK.html
(You may need to register. It's free.)
////
Add "Compiler" by g++.exe
Add "Qt Version" by qmake.exe.
Add "Kit" with Compiler and Qt Version configured above. You can try to change debugger from CDB to GDB.
When you installed mingw, did you select the C++ compiler? It is not selected by default but you need it. Re-run the wizard and select that.
The kit is not valid because the C++ compiler cannot be found: try to install it first. If you still cannot setup this read the manual: http://doc-snapshot.qt-project.org/qtcreator-2.6/creator-targets.html. It is very complete.
qmake.exe is in *qt_directory*/bin/qmake.exe.
Try this out:
http://sourceforge.net/projects/mingw-w64/ (Since the mingw-w64 project on sourceforge.net is moving to mingw-w64.org i suggest to use mingw-w64.org)
It works for me.
I've installed the Qt SDK version 4.8.0 (to C:\QtSDK) on a Windows 7 64-bit machine. I've also installed and successfully compiled QWT 6.0.1 with MSVC2010.
I can use QWT in C++ code by linking to the libraries; however when I try to use the plugin I get an error that I can't seem to find on the Googles.
My failed plugin error is:
The plugin 'C:/QtSDK/QtCreator/bin/designer/qwt_designer_plugin.dll' uses an incompatible Qt library. (4.8.0) [release]
My QWTbuild.pri has CONFIG += debug_and_release
I built the plugin by doing:
C:\QtSDK\QWT\qwt-6.0.1\designer > qmake designer.pro
C:\QtSDK\QWT\qwt-6.0.1\designer > nmake release
I then copied the .dll generated (qwt_designer_plugin.dll) in C:\QtSDK\QWT\qwt-6.0.1\designer\plugins\designer to my plugin path for QtCreator (C:\QtSDK\QtCreator\bin\designer)
I've also put the .dll and the .lib generated in the Qt plugins folder (C:\QtSDK\Desktop\Qt\4.8.0\msvc2010\plugins\designer).
I've also linked my libraries in the project file containing the form I'm trying to build.
I'm sure that there's something small I'm missing, but I can't seem to find it. What am I doing wrong here? Any help would be greatly appreciated.
Regards,
Alexis
The Qt plugins should use the same version of Qt or a lower version with the same major number as the application they are loaded in.
Since the Qt Creator currently included in the Qt SDK seems to use Qt 4.7.4, you should probably recompile Qwt for that version of Qt.