General and Desktop

I almost forgot, you may want to take a look here: http://vmpk.sourceforge.net/ It is a piano controller application, the project is quite big and you may have problems finding what you need in there, but it has the type of input you want to achieve. It uses QGraphicsScene thou.

Ok, I found the problem. its from my code. I thought that I should use QGuiApplication instead of QApplication for gui app, and after debugging it appears that the crash happened when QWidget try to get QApplication instance to know the type of the application. Here is my first Qt5 app :) @#include <QtWidgets/QApplication> #include <QtWidgets/QWidget> int main(int argc, char *argv[]) { QApplication a(argc, argv); QWidget w; w.show(); return a.exec(); }@ Thanks.

Yes, the error message is no longer there. Thanks.

Thanks! was pretty simple

welcome to devnet Good to know that you have solved your issue. It is also good to leave your input here for inspiration for others. You may want to mark your input as [Solved] in the title. Go to first post at the right under your avatar is a edit field. This allows you to edit this post and the title line. I will do for you this time.

There is no direct way to set the line color (something like "setColor(foo)" does not exist). You either do need to change the palette, or use CSS style sheets. The latter is usually simpler and slightly slower.

Indeed. It'll just be a case of performance if i just stick the flags into the source model / have another model and sync the contact part with the original model and build on top of it. For now i'm gonna go with option 1 cos it seems obvious enuff to be a better performance solution

Thanks worked like a charm!

I created widget using QT Designer.Tab order I set using "Edit Tab order" in QT Designer.

Ah, yes. I always forget that those exist too :-)

Hi, I have finally found the problem. In the post I used as "reference" they are creating a filter for a fixed directory. I have modified it, by addind the method SetRootDir, to be able to change of directory. But I have not seem that in the QT doc it is written that in this case I must call the method InvalidateFilter().

I think I found the answer: The interface will connect signal to the dbus dynamically. I found @QDBusAbstractInterface::connectNotify@ in the source of QDBusAbstractInterface which calls connection->connectRelay. If you investigate a little bit further you will find the calls to connection->connect(..) somewhere. Vice versa you can find the same stuff for the disconnectNotify. So in my opinion: Smart Qt :D

Connect the currentIndexChanged signal from the box to a slot where you set the font of the editor using QWidget::setFont().

Hi, it is Qt not QT, and Qt Creator is just an editor... Also doing cross compilation is always tricky and I am not really a friend of it. But where is the problem to install e.g. VirtualBox and set up a Linux environment and compile your application natively. Then you can also debug it. Best

Hi, I got the answer, it is through itemsBoundingRect

Thanks, Lucas. QToolButton is actually what I need.

Thanks a lot, it worked like a charm. I needed image (QImage) object too, for some other features, so i retained that also. @if(fileInfo.fileName()!=fileInfo.baseName()+".svg") { displayImage.addPixmap(QPixmap::fromImage(image)); // add image to QGraphicsScene object } else if(fileInfo.fileName()==fileInfo.baseName()+".svg") { QGraphicsSvgItem *svgItem = new QGraphicsSvgItem( fileName ); displayImage.addItem( svgItem ); }@ @void aViewer::on_actionZoom_In_triggered() { ui->graphicsView->scale(1.1,1.1); }@