I want to draw a simple line chart in my QWidget application. I found this link, but when I add `
#QT += charts
to my .pro file, an error appear that :
Unknown module(s) in QT: charts
You may use QCustomPlot. It's free (GPL), simple (just 2 files), fast and well-documented.
You may use Qt Charts (it is free, qt blog), but you need cloning git repository and building the project manually. Git repository you can find here.
Related
I have created some custom widgets which I can use in my projects by directly using source files or by compiling them to libraries and then using them in my project but I am wondering if I can make a module MyWidgets and use it like Qt += mywidgets, is it even possible? if yes how can I make one?
I have searched the internet for a full day but I did not find any step by step guide showing how to make a custom module.
I have found this article but it doesn't show how to actually make a sample module and build it.
I want to create a qt designer plugin that behaves like the builtin QTreeWidget but i cant find the source code used to create any of the built in widgets. Help will be appreciated.
In my Qt installation (4.7.1), the designer plugin source code can be found in
<QTDIR>/tools/designer/src/plugins
I have compiled OpenCV with QT.
I'm now facing an error which I'm almost certain is related to QT and I would like to output it using the old-fashioned highgui, without the QT interface.
Is this possible?
cvNamedWindow( ``myWindow'', ``CV_WINDOW_NORMAL`` );
will display the windows without any Qt decorations, if you don't want any Qt to be used at all you need to rebuild openCV without Qt
As of 2021 and OpenCV versions 4x (and maybe less), you can disable Qt Decorations associating flags like below:
cv2.namedWindow("main1", cv2.WINDOW_GUI_NORMAL | cv2.WINDOW_AUTOSIZE)
You can check all flags here.
I am getting difficulty in loading 3D models and textures in Qt creator 2.1 while using obj files.It would be really helpful if someone could provide me the examples or material showing how to load 3D models and textures in Qt using obj files.
regards
hurr[i]cane
The Qt Demo has an example program, which shows a 3D Qt logo. As I remember, that logo is a obj 3D file loaded into that program. you can check out that source code.
there are also other Qt demo programs that load textures.
I have VC++ & opencv code and I want to design GUI to it using qtcreator.
First of all, I included the libraries to the project and it ran without any errors.
Now, what should I do after this?
How can I add the code into main.cpp file in the project?
should I change every opencv code to Q... like IpImage to QImage?
Install the VS-addin it will hook the.pro file to a gui editor automatically
About connecting OpenCV to Qt GUI classes , here is an example code QtOpenCV 1 . It takes content ipmage ,IIRC converts into rgb32 and paints it over a QWidget in paintEvent(QPaintEvent*);