In my application I have QGraphicsScene with pixmap added and all is viewed in QGraphicsView with scrollbars off. The program window is smaller then pixmap and when I press arrow keys or move mouse...

Sorry for my beginner's question... What is the easiest way to define procedures, which are executed when MousePressEvent or MouseReleaseEvent occurs? For now I am defining my own class (MyGraphi...

How to write text in a certain cordinate in QGraphicsScene? I was trying to do like this, but with no success. Text has black borders but inside the letters it is white, and I can't make it black. ...

I am working on a mapping application and need to display the data objects using a table, a form and as graphical objects in the map. I'm using PyQt, but that's not really important as this is a Qt...

How do I draw interactive widgets such as QButtons and Line Edits over a QGraphicsView? For ex, I have selected a region over an image in an image editing app which displays an image with QGraphics...

This has been bugging me for more than two days now, so i thought i should ask. I am using Qt 4.5.3 (compiled with VC2008) on Win7. I have MyGraphicsView (inherits QGraphicsView) and MyFilter (inh...

I'm using Qt/C++ and trying to draw a large and complex QGraphicsScene. Once I add a lot of objects, panning and zooming become unpleasantly slow. (No surprise here, of course). I've played with de...

I'm trying to test whether a given point (x, y) is located on or close to the outline of a QGraphicsPathItem. Using QGraphicsItem.contains() or .collidesWithItem() / Path() will not do: those als...

I'm creating some graphic data displaying widget in Qt4 and I was tempted to use the QGraphicsScene for it, create QGraphicsItems for the data items etc. However, I wanted to add some layer of con...