I'm trying to integrate maliit virtual keyboard into an embedded board.
environmental details:
qt4 with X11
imx6 board.
maliit framework version 0.81
maliit plugin version 0.80
cross-compilation details:
maliit framework
qmake M_IM_PREFIX=/home/root/maliit/usr M_IM_DEFAULT_PLUGIN=libmaliit-keyboard-plugin.so CONFIG+=disable-gtk-cache-update CONFIG+=notests -r
make
sudo make install
maliit plugin
qmake M_IM_PREFIX=/home/root/maliit/usr -r
make
sudo make install
I copied the output folder to the embedded board and tried to start the virtual keyboard
export QT_PLUGIN_PATH=/home/root/maliit/usr/lib/maliit/plugin-0.80
export QT_IM_MODULE=Maliit
maliit-server &
and started maliit test application
maliit-exampleapp-plainqt
but the keyboard is not coming when I touch the text field.
am I missing anything here?
Related
I'm trying to build a CMakeLists project using Qt Creator 4.8.1. The problem is, I need to run CMake inside a different nativesysroot.
I tried to create a bash script that runs CMake inside the other environment and added it to my kit. As follows:
#!/bin/bash
cd ~/Desktop/Workspace/my_proj/build &&\
~/Desktop/Workspace/my_proj/sdk-x86_64/opt/nativesysroot/usr/bin/sysroot\
~/Desktop/Workspace/my_proj/sdk-vmwx86-x86_64/opt/nativesysroot/usr/bin/cmake "$#"
Such that, sysroot is an executable that changes the current nativesysroot.
The problem is this does not work because Qt Creator is trying to run CMake using the following configuration:
Running "/home/***/Desktop/Workspace/my_proj/script.sh -E server --pipe=/tmp/cmake-.ewYqvn/socket --experimental" in /tmp/QtCreator-kruzfX/qtc-cmake-YOZsCIQx.
This of course causes CMake server connection lost. I tried the look around how to disable the CMake running in server mode but I did not find anything in Qt Creator.
My question is, how to disable CMake in server mode? Or, how to instruct Qt Creator to run my script without adding any flags or options?
Thanks.
I'm new to opencv. I installed it on my computer using cmake following the tutorial in their website.
mkdir Desctop/opencv
cd Desctop/opencv
git clone https://github.com/Itseez/opencv.git
cd opencv
mkdir release
cd release
cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local ..
make
sudo make install
And to compile with opencv using cmake, I add the CMakeLists.txt file in the cpp file directory then execute
cd <cpp file directory>
cmake .
make
But now I know more about opencv. I know that I can make GUI windows with it; I can make buttons, scroll bars and many other UI controls.
But I can't use the GUI tools unless I integrated cmake with QT.I'm not sure how should it be, but I thing it would be something like
cmake -D WITH_QT=ON ..
Reference
But the problem is that I've already installed opencv and I don't know how can I change it's configurations to use QT.
I tried to install cmake-gui to change the opencv installation configurations but I didn't find anything for opencv in the program.
My questions
Do I need to re-install opencv or it's possible to change the settings or changing the content of CMakeLists.txt file?
How can I change the configurations of the current opencv installation so it support QT?
would I need to change the CMakeLists.txt file after changing opencv's configurations?
I have installed qt creator on raspberry pi. sudo apt-get install qtcreator. The program launches and seems to be working except when I load in a cmake project I cannot run cmake through qt creator because qt creator does not detect any cmake generators. When I run cmake -h from the command line there are many cmake generators listed. I want to use the standard Unix Makefiles generator. I have also checked that make is installed and working from the command line on my raspberry pi.
Other details: Running the latest Raspbian, qt creator 2.5, qt 4.8.2,
I had the same problem on Ubuntu after messing with my GCC installation. Maybe the following fix will also work on a Raspberry Pi:
Go to View -> Options -> Build & Run
Go to the "Kits" tab and make sure that a compiler is selected.
Go to the "CMake" tab and hit "Add" to specify the path to your cmake, e.g./usr/bin/cmake. Do this even if the same path is already there as an autodetected cmake.
Select your newly added cmake and hit "Make Default".
I installed qtcreator on a Ubuntu 11.10
sudo apt-get install qtcreator
the versions installed are: QT Creator 2.2.1, QT 4.7.3
When i start qtcreator, to explore QT C++ examples the button is greyed out/disabled and it says Examples not installed.
Neither does qtdemo show any demo/documentation?
Do i have to install examples, doc separately? If yes, how?
How can i enable examples in qtcreator and documentation in qtdemo?
EDIT:
In response to one answer below from #Murtuza Kabul, I tried many things to point qtcreator to correct qt but could not. So I did uninstall qtcreator and qt-sdk and reinstalled qt-sdk. So now qtcreator is what comes with qt-sdk . It still says examples not installed.
I downloaded Qt 5.1 directly from qt-project.org and installed as admin (with sudo) on Linux Mint 12 (based on Ubuntu).
If I started qtcreator as normal user I didn't have examples but if started qtcreator as admin (with sudo) I had all examples.
My problem was with examples folder privilages. It was the only folder without read/execute privilage for all users (/opt/Qt5.1.0/5.1.0/gcc/examples). All other folders inside (and outside) examples had privilages for all users.
EDIT:
I forgot to say - as HostileFork mentioned in comment - sudo chown -R +rx /opt/Qt/5.1.0/gcc/examples was solution to this problem.
EDIT:
As noted by Climax - it should be chmod instead of chown
sudo chmod -R +rx /opt/Qt/5.1.0/gcc/examples
You also need to install qtsdk. It comes with the examples and binaries required to run the qt project. If you install the sdk, it will provide you an interface to update the sdk and install/uninstall different parts of the sdk whereby you will be able to choose if you want to install the examples or not
Install the qt4-demos package.
sudo apt-get install qt4-demos
I found the sample code installed in /usr/lib/qt4/demos/. Also the qtdemo program was installed at /usr/lib/x86_64-linux-gnu/qt4/bin/qtdemo.
It seems only a limited set of examples are installed by this package.
I had the same problem on Windows 7.
How I solved this:
I open QT Creator.
I select menu-option [Tools]
From there I select [Options...]
From there I select the [Kits] option on the left-hand side
I select the tab [QT Versions]
I click The [Add...] button: to add the QT version that I am using...
... I am presented with a windows-explorer screen to select something...
... I go to the main directory on which QT is installed (in my case: C:\Qt)...
... In the explorer "Search" I enter qmake (without the quotes)...
... There is a single qmake EXECUTABLE file displayed - I double-click it!...
... I press [Apply], then [OK].
Walla - it works! I now have examples!
I wanted to migrate my Qt 4 app to use Qt 5 instead. These instructions failed, due to some differences with how MXE builds Qt 5, including the fact that it uses modularised Qt tarballs, instead of one large tarball.
Here are the full instructions:
Get it:
git clone https://github.com/mxe/mxe.git
Install build dependencies
Build Qt 5 for Windows:
cd mxe && make qtbase
This will first build its dependencies and the cross-build tools;
It should take less than an hour on a fast machine with decent internet access.
Due to the new modular nature of Qt 5, various major Qt components are now in different tarballs. The one selected above, qtbase, should give you enough functionality to run ordinary GUI apps, which is all I needed for my own (smallish) app.
If you want to build all of Qt 5 instead, you'll need to run make qt5 (instead of make qtbase). Note that it will take a lot longer to complete, so be sure that you need the extra functionality.
Get to the directory of your app, and run the Qt Makefile generator tool:
<mxe root>/usr/bin/i686-w64-mingw32.static-qmake-qt5
Build your project:
make
You should find the binary in the ./release directory:
wine release/foo.exe
Some notes:
This was tested on my 64-bit Debian 8, and on Windows of course.
The output is a 32-bit static executable, which will work well on 64-bit Windows.
If you want a 64-bit executable, build Qt with:
make MXE_TARGETS=x86_64-w64-mingw32.static qtbase
The default MXE_TARGETS value is i686-w64-mingw32.static.
The git checkout command is not correct. You now have to get their stable branch or it will fail building.
git clone https://github.com/mxe/mxe.git
should be...
git clone -b stable https://github.com/mxe/mxe.git
That alone fixed all my issues with qtbase building but leaving no qt folder when done. Then qt5 target would fail with obscure errors. Deleted folder, checked out stable and it worked flawlessly.
For those who directly want a GCC10 64bit compiled Qt5 (for filesystem lib for example),
Here are the full instructions:
Get it:
git clone https://github.com/mxe/mxe.git
Install build dependencies
Build Qt 5 for Windows with gcc10 64bits plugin activated :
cd mxe && make MXE_TARGETS=x86_64-w64-mingw32.shared MXE_PLUGIN_DIRS=plugins/gcc10 qt5
After 2-3 hours of build you can build your app (in your .pro directory) :
<mxe root>/usr/x86_64-w64-mingw32.shared/qt5/bin/qmake
Export path of compiler & build your project:
export PATH=<mxe root>/usr/bin:$PATH
make
You should find the binary in the ./release directory & start it with wine (or wine64) :
wine foo.exe
I don't really know why, but I needed to add the MXE compiler directory to the wine path because it's couldn't find the DLLs :
WINEPATH="<mxe root>/usr/x86_64-w64-mingw32.shared/bin/" wine64 foo.exe
If you try to do this, for me work fine!
su
mv mxe /opt/mxe
cd /opt/mxe && make