3rd Party Software

Hi,

Please don't post the same question in multiple sub-forums. One is enough

"Duplicate":http://qt-project.org/forums/viewthread/32565/

Hi..long time already..But did you solve it?

I could manage to link it to GL.h and GLU.h so I could solve for the errors you are getting.

But after it is solved, I cannot move ahead. I am being returned with a dll file..which when i link to my project says its corrupt.

Any help in this regard will be very great.. thank you

Regards
Alok

Hi SGaist,

after getting a bit tired refitting the Mandelbrot Example to my needs I asked this question at StackOverflow. It turns out that there are some issues the way the example uses threads. I don't know if I could have saved my code but I was getting depressed so I recoded the way somebody pointed me out at StackOverflow and this worked instantly and also avoids image conversion as i can use the opencv namendWindow.

@//create new thread
QThread* thread = new QThread;

//init camera with guid, raw color capture, vga format and 50fps
cameraCapture = new CLEyeCameraCapture(winName, folder, userID, guid, CLEYE_COLOR_RAW, CLEYE_VGA, 50);
cameraCapture->moveToThread(thread);

connect(thread, SIGNAL(started()), cameraCapture, SLOT(StartCapture()));
connect(cameraCapture, SIGNAL(finished()), thread, SLOT(quit()));
connect(cameraCapture, SIGNAL(finished()), cameraCapture, SLOT(deleteLater()));
connect(thread, SIGNAL(finished()), thread, SLOT(deleteLater()));
connect(ui.pushButton_startLogging, SIGNAL ( clicked() ),this,SLOT( activateLogging() ) );
connect(ui.pushButton_stopLogging, SIGNAL ( clicked() ),this,SLOT( deactivateLogging() ) );
@

I tried to follow this "example.":http://mayaposch.wordpress.com/2011/11/01/how-to-really-truly-use-qthreads-the-full-explanation/

Here is the "Question on SO.":http://stackoverflow.com/questions/18594528/create-thread-in-qdialog-and-emit-signals-to-qdialog-in-qt

Thank you for your help. Now i avoided the freezes. It might be of interest for people who using any conversion from IplImage to QImage: non of the conversions are fast enough for realtime (I did not measure wether the conversion or the displaying method is slowing down the process).

Thank you anyway for your help. I guess it is wise for anybody who rebuilds this to use their original code and put it in a Worker which then gets moved to a QThread.

It took a while (on top of the while before, and that before, ...) but I just ran two scripts I wrote to test out the Python-support. So far, things look mostly good. A minor problem is that I want my application to be deployable without anybody needing to install additional software, so I have to ship a big chunk of Python-related libraries with it. And so far I have not found a way to at least hide them in a sub-folder of my program.

The header file of my simple wrapper currently looks like this:
@class ScriptEngine
{
public:
enum ScriptingLanguage{Auto = 0, Python = 1, Unknown = 1000};
static void init();
static void reinit();
static void quit();

static QVariant run_function(const QString &file, const QString &function, const QList<QVariant> &vars, ScriptingLanguage lang = Auto); static void run_script(const QString &file, ScriptingLanguage lang = Auto);

private:
static QVariant convertObject(void *obj);
static void *convertVariant(const QVariant &var);
static ScriptingLanguage recognizeLanguageFromFileName(const QString &file);
static QString pathToPythonModule(QString path);
};@

Inside the corresponding .cpp-file are about 350 lines of code, mostly extremely simple (two big switches, lots of error-checking). With a bit of cleaning up and ironing out the kinks, this somewhat simple wrapper will serve me perfectly. If anybody ever would like to obtain the code, answer this post, I'll get a mail and come back to you. But first, I want to polish things a little bit.

ok, I will try that....
Thank you very much

I imagine that the divide by zero is happening in your c++ code and not the matlab code. I haven't tried this in a Compiler generated dll from C++ code but here is what happens in MATLAB:
@

n = int16(5)

n =

5

d = int16(0)

d =

0

q = n/d

q =

32767

intmax('int16')

ans =

32767
@

Check anywhere in your C++ code that you are doing division. Maybe posting your code would help...

Hi,

in the QtCreator sources you find a file named botan.pri.

I have also configured $PATH=/home/myhome/Qt5.1.1/5.1.1/gcc/bin:$PATH

If you are building with Qt 4 you don't have the widgets module

You're welcome !

Hi and welcome to devnet,

Great you found out and shared ! Could you also update the thread's title to solved so other forum users may know a solution has been found :)

Since you're on linux you can take advantage of pkg-config

Hi and welcome to devnet,

In Qt 5 you have the qtwinextras repository for windows platform specific code like QWinWidget, you could try to see if you find it there.

Hope it helps

Hi,
I have proble:
I would like to use mouse to resize QWidget which have set parent = MainWindow like it have set parent = 0 . How I can do this?

yes i sent an email! however they answer every 3 days !!
i could solve some part of it by creating a sub-directory of appPath/crypto/crypto and copying the plugins inside it. now when i run this on another machine it is working properly but inside qt i just have access to qca-pkcs11
and QCA::pluginDiagnosticText() tells me:
qca-ossld2.dll: failed to load: Cannot load library C:/QtSDK/Desktop/Qt/4.7.4/mingw/plugins/crypto/qca-ossld2.dll:
qca-pkcs11d2.dll: (class: pkcs11Plugin) loaded as qca-pkcs11
thanks for your concern :-)

It seems we were running into this bug running qt 4.8.4 and mac osx 10.6:

https://bugreports.qt-project.org/browse/QTBUG-15344?page=com.atlassian.jira.plugin.system.issuetabpanels:changehistory-tabpanel

Yes, this started with Qt 5

Is your picture set to public in Photobucket?