General and Desktop

Resolved! I put ShowImage as a public method.

[quote author="NullCoding" date="1351259018"]Odd thing is, each thread seems to do everything three times.[/quote]Let's have a look at your code [quote]Also, the GUI locks up. I thought by using separate threads, I would be avoiding exactly that.[/quote]Is it just the GUI, or your whole machine? If it's the latter, it just means your laptop doesn't have enough grunt, and no amount of multithreading will help. [quote]All I'm trying to do is update the GUI as the tests are in progress in another thread. Is that too much to ask? Something tells me Qt doesn't really want to do that. It leaves the GUI accessible, but very very laggy.[/quote]How regularly is the GUI getting updated?

I found a working server example: @ m_socket = new QSslSocket(this); m_socket->setSocketDescriptor(handle); m_socket->setProtocol(QSsl::SslV3); QByteArray key; QByteArray cert; QFile file_key("../ssl/server.key"); if(file_key.open(QIODevice::ReadOnly)) { key = file_key.readAll(); file_key.close(); } else { qDebug() << file_key.errorString(); } QFile file_cert("../ssl/server.crt"); if(file_cert.open(QIODevice::ReadOnly)) { cert = file_cert.readAll(); file_cert.close(); } else { qDebug() << file_cert.errorString(); } //qDebug() << key + "\n" + cert; QSslKey ssl_key(key, QSsl::Rsa); QSslCertificate ssl_cert(cert); m_socket->setPrivateKey(ssl_key); m_socket->setLocalCertificate(ssl_cert); m_socket->startServerEncryption(); @ This example works fine. Now how can I avoid certificate sending to client? I'd like to have the certificate already available to the client code so that it can use that certificate to communicate with server .

hi Peter, you can go through the link "Qt and MS Excel ":http://qt-project.org/forums/viewthread/13656

"Setting the Application Icon":http://qt-project.org/doc/qt-4.8/appicon.html

You are right, it works much better with : @ o1.setObjectName("op1"); @ I guess it's time for me to do deeper reading on the priority system. Here i mixed up the object name and the instance name. Thanks again Sierdzio and Chris.

Subclass QLabel, and reimplement its paintEvent instead of the one of your main window. Then, you can simply overpaint the line directly on the widget, instead of on the image. The problem with the code above, is that you create the painter on the this object: the MainWindow itself. If you wanted to paint on the image, you should have created it on the Image object. However, I don't get why you first create an image at all, only to convert it to a pixmap a few lines later.

Thank you very much issam and rcari. It's done well: @ void MyItem::mousePressEvent(QGraphicsSceneMouseEvent *event) { if(event->button()==Qt::LeftButton){ myMouse_koordinat = event->buttonDownScenePos (Qt::LeftButton); qDebug() << myMouse_koordinat.x(); } update(); QGraphicsItem::mousePressEvent(event); } @

Using PlaySound is straight forward: @#include <Windows.h> #include <MMSystem.h> PlaySound(MAKEINTRESOURCE(IDR_WAVE_FOO), GetModuleHandle(NULL), SND_RESOURCE | SND_ASYNC)@ Here IDR_WAVE_FOO is the Resource Id of the Wave file we want to play. But this refers to Win32 resources, which are completely separate from Qt's resource system. But both can be used in the same binary just fine. But if you rneed something that really works platfrom-independant, you might call MPlayer as an external process via QProcess. You need a separate MPlayer binary for each platfrom, but that shouldn't be a problem...

I finally gave up on heightForWidth and am now trying to accomplish this with QResizeEvent. If I re-implement it for the widget, it only controls the resizing of the contents of the sub-window, not the sub-window's frame. When I do it for the sub-window (i.e., in a class inheriting QMdiSubWindow), it has no effect! Someone, please throw me a line; I'm running out of ideas.... [EDIT -- After more testing, I realized that I've got a pointer problem: QMdiArea expects type QMdiSubWindow, so I used an unsafe cast to get it to accept my new class. That means I have a base-class pointer directed at an instance of a derived class, which I think explains why my resize code isn't executing. But I'm not sure how I can get around this. Do I have to re-impement QMdiArea as well?]

I quickly noticed that i was actually trying to turn it on with the code above. Upon further investigation, I found that the flag I was trying to unset isn't set at all in the first place, so unsetting it obviously didn't help. Is there a 'right way' to set a widget (dialog) to not stay on top?

Just access the struct in the same way you do in C.

@pedro79 Thanks. You solution works :) . @issam No I haven't. But due to ugly outcome of a scale ( if it's scaled by x twice and once by y, borders etc are extremly ugly as one is thicker than another etc...), I used my solution. Marked as solved. Regards, Jake

Good to hear :) Please edit your original post and add "[Solved]" to the title

Hi Gerolf, could you explain what exactly you mean by custom positioning? Thanks