Quite often there are questions in one way or another related to the work of the graphic scene, with custom figures, drawing lines on the graphic scene, and even all sorts of broken lines. And then I remembered about one …

In the last article I was considered an example of how to save objects in a graphical scene SVG file, and then we were able to open it in CorelDraw. Now try the same file open and restore the graphics …

Using Qt, you can save the contents of the graphic scene QGraphicsScene to SVG vector graphics files that are opened without problems after such editors as CorelDraw. I propose to write a small application that will save the contents of …

My attention was drawn to the fact that for working with signals and slots instead of a class inherited from QGraphicsItem and from QObject , you can use a class inherited from QGraphicsObject . Indeed, if a little rummage in …

Polymorphism is one of the paradigms of OOP (Object Oriented Programming). Polymorphism implements the ability to provide base-class properties and methods, the implementation of which is not known for future classes that inherit from this class. That is the base …

Let's say that you make an application that will be displayed the elements of the network infrastructure on the graphic scene . The question is how to make the movement of these elements with the mouse, you have to implement …

Everyone remembers the game Crimsonland ? There had to cut stacks of monsters. To move on the playing field, we used the keys W, A, S, D, and shooting direction the mouse cursor, which was produced track. So, in itself …

In this lesson, let us learn drawing with the mouse in Qt, based on the most primitive analogue Paint using QGraphicsScene . No adjustments or brush size, or palette, or special effects, and a red line, which we will draw …

Continuing the theme of how to write a play on Qt. Once in past articles a fly was created, that eating apples, it is time to create her enemy. And the enemy flies, as is well known, the spider. Creation …

Once the game has animated fly, which moves under the influence of the keyboard shortcuts, it is time to add meaning to the game. Add goal Fly, for example, it will eat the apples that will be counted. That is, …