@javad935
Google for: QSqlDatabase: QMYSQL driver not loaded
There are plenty of answers.
I forget what it is for Windows, but you have to install some kind of libmysql.dll to allow it to load QMYSQL driver.

@wrosecrans
Hoping I can get an answer from the mailing list. As soon as I figure it out I will post the solution here.

@nour.m

if you mean here:
http://freetexthost.com/l5wzgtntzb
than no, you did not make the changes @aha_1980 told you to do

SOURCES += main.cpp mainwindow.cpp my_polyhedron.cpp myqglwidget.cpp HEADERS += mainwindow.h My_CGAL_Config.h My_Face_base.h My_Halfedge_base.h my_polyhedron.h My_Vertex_base.h myqglwidget.h

still mising \ at the end of the line

also you are adding the widgets module twice. I'm not sure in what that will result, but you should remove one

QT += core gui QT += widgets //remove me DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x000000 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

@hassene
Hi and welcome
Is there a reason you simply dont use a layout ?
To make it autofollow the size of window ?
if you place a QLabel on a form ( mainwindow.ui) , right click somewhere on
empty form, and select Layout menu and select layout, the label will follow maniform.
https://doc.qt.io/qt-5.10/examples-layouts.html

@Maluna34 maybe the qrc file mechanism is not the best approach for what you intend to use; however you only know your actual requirements.
From documentation about Qt resource system:

The Qt resource system is a platform-independent mechanism for storing binary files in the application's executable. This is useful if your application always needs a certain set of files (icons, translation files, etc.) and you don't want to run the risk of losing the files.

so a music file for a whole opera concert is not a suitable candidate for being stored in the qrc file as it ends up into your executable.

Given that said, you could get the file from the resource and save it somewhere to disk so the external tool can access it.

QFile::copy(":/sounds/ocean.mp3", "/tmp/ocean.mp3");

you can even use QTemporaryFile to avoid worrying about file naming and deletion.

Please show the complete code you are using for that part.

Hi,

AFAIK, PNG doesn't contain the same meta data so you won't be able to use QExifImageHader to read them.

Hi
Just as note.
You should do it in same shell
(start x server)
export DISPLAY=:0.0; /path/app

Hi @jsulm and @Paul-Colby,

if (segs) { delete[] segs; segs = nullptr; }

This is an anti-pattern! Just make sure segs is nullptr before you call new and set it to nullptr after delete. No need to check for nullptr before delete:

delete segs; segs = nullptr;

Quoting the C++ Reference:

"If this is a null-pointer, the function does nothing."

Regards

Hi
Not as far as i know.
You can use the MS ActiveX if you want (MSHTML)
http://doc.qt.io/qt-5/activeqt-activeqt-webbrowser-example.html
and other techs on the other platforms.

BTW, keep in mind that there is no such thing as "universal ref" in C++ standard. It's just a way of thinking about rvalue ref T&& in contexts which provide type deduction for T

mkdir build_qtspeech pushd build_qtspeech /path/to/Qt/bin/qmake /path/to/qtspeech/ make make install popd

@Valveware said in Promoting to custom widget in QtDesigner '*.hpp' no such file or directory [cmake]:

file(GLOB_RECURSE QT_MOC RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} FOLLOW_SYMLINKS include/dashboard/*.hpp)

Ok that looks like it would indeed moc your cameraframe.hpp.. So that's probably not the issue.

Can you share the build log from gcc? And also the ui_main_window.h file as well as ui_cameraframe.h?

@VRonin I don't doubt that Visual Studio can do this, my poins are

qmake doesn't have native way to set source-specific flags, you need to create your own custom target with all gory details of building C++ file, so it's much easier to move it into library I don't know if mixing EH flags in the same binary is reliable with MSVC

@Jerwinprabu Thank You. It is working fine now.

Did you have any system update happening in between ?

I think you have to add a QMultiSampleAntiAliasing to either a QRenderStateSet or a QRenderPassFilter. Did you also enable it in the OpenGL format that you set?

From the looks of it I would say there's somehow a mismatch with the C++ standard used and this stackoverflow answer goes in the same direction.

Thanks for your help.

It's an application that runs on a big screen that people will use standing up. So they will be using touch rather than a keyboard.

The reason for Windows 7 is that the application will need to attach to hardware, D2K-DASK http://www.adlinktech.com/PD/web/PD_detail.php?pid=350. The hardware drivers are only guaranteed for Windows 7 and 8. Its possible it might work on Windows 10 anyway but it's not clear.

Also, they want to use a touch number pad for number only entry. Not sure how much extra effort that would involve? I just found this artical http://www.cplusplus.com/forum/windows/128603/ , is ok?

@kshegunov yes that is exactly what I was wondering. I was not sure if plugins can be loaded into other C++ plugins or not. I will give this a shot.

@SGaist good point about creating a library. I think isolating the communication API into a dynamic library would be an even better solution as you suggested. I will have to do some refactoring.

Thank you both for sharing the quick and helpful response!

The lib prefix should be dropped like @jsulm suggested.

Resolution:
The final puzzle piece was in the QML. I had to set the max x, y, z axis values appropriately for a polar graph which differed from the original square-image values.

axisX.min: 0 axisY.min: 0 axisZ.min: 0 axisX.max: 360 // [Degrees] axisY.max: 256 // Max data value axisZ.max: 90 // Max calculated radius

Final c++ was:

float xo = x - 64.0f; float zo = z - 64.0f; float radius {0.0f}; float angle {0.0f}; radius = std::hypot(xo, zo); angle = std::atan2(zo, xo) * (180/M_PI); angle +=90; angle = std::fmod(angle, 360); if (angle < 0.0) angle += 360; row[x] = QVector3D(angle, value, radius);

@Eeli-K Correct :-)
Wow i don't know if it good or bad that i just spent almost 2 days for less than 10 rows of code :-)

@Lasith You should open the database only once. Currently you do it each time button is pressed.

Hi,

There's no need for any global objects all the more if you only have one active connection for your application but it's also valid if you are managing multiple connections. The QSqlDatabase class already provides everything you need.

Like written in the documentation, if you are only using one connection, don't give it a name, it will become the default connection and all the SQL related classes will use it by default.

If you have several connections, it's easy to retrieve the one you are interested in by using QSqlDatabase::database.

On a side note, you should properly test the outcome of your open call. Right now it could be failing and you don't care about that possibility.

Put a QSortFilterProxy model in-between. then save from the proxy instead of the main model.

P.S.
connect(currentTableHeader, SIGNAL(sectionClicked(int)), this, SLOT(on_sectionClicked(int))); and void mainWidget::on_sectionClicked(int index) are useless. this is the default behaviour of QTableView, you don't have to implement it manually

@johngod Okay, Thanks, i try it.

http://download.qt.io/official_releases/qt/

You also have the MaintenanceTool that offers that possibility.

@Kushan
basically Oracle supports requests via ODBC driver. So this is more a matter of your DB configuration.

@J.Hilk Thanx alot

@SGaist
I sincerely want to thank you for your help! This project took six-months and your assistance was crucial in getting over the goal line in the final week. If I missed that hard deadline my six-month contract-to-hire would have been terminated. Partly because of your assistance I made it work and was hired full-time permanent! We shipped Version 1.0 and two weeks later I delivered a significant V1.1 follow up!.

I momentarily had it setup as a (static?)linked library but backtracked to direct #includes from the /common/ folder, mainly because I understood it better. I intend to switch again to the library method because of compile times as you suggested. I was also scared off by an article suggesting I would need to add C++ #EXTERN statements, etc. to create a public interface for the library. Is that true, or can the .pro/.pri files define that folder as a library with NO changes to the C++?

I still have to migrate *.qml files to the /common/ but I assume it's basically the same pattern as the C++. I haven't replied because I thought I had more questions but the project has been moving too rapidly.

Thank you!

While I'm here, you can use https://github.com/VSRonin/Qt-Model-Serialisation/tree/dev

CsvModelSerialiser modelSaver; modelSaver->setModel(ui->tableWidget_2->model()); modelSaver->setCsvSeparator(" "); QFile mFile("C:/Users/Desktop/Qt/textfiles/test.txt"); modelSaver->saveModel(&mFile);

I built qt and font show up now. Thanks a lot jsulm for the support.

@Ashwinimehra
Hi and welcome
Its outside the scope of Qt but linux does support it
http://www.thegeekstuff.com/2012/04/linux-file-locking-types/