Both the parameters are required in this method. The onkey() and onkeyrelease() method calls the user-defined function and performs the action defined inside the function when the specified key is pressed. It should be string data type such as “a”, “b”, etc… or if you want to use key-symbols then metion the key name as a string such as “space”, “up”, “down”, “left”, etc… fun – the name of a function with no argument.event QMouseEvent (QEvent.MouseButtonPress, event.pos (), Qt.LeftButton, Qt.LeftButton, Qt.NoModifier) QTextEdit.mousePressEvent (self, event) Example 3. Note: A listen() method with dummy arguments from the turtle module is used along with the keyboard events method to set focus on the Turtle screen.Īll the keyboard events methods accept two parameters mentioned below: def mousePressEvent (self, event): if event.button () Qt.RightButton: Rewrite the mouse event to a left button event so the cursor is moved to the location of the pointer. Keyboard EventsĪction will be triggered when a user presses a key on a keyboard. It is used to call Tkinter main loop function. In the above example, we have used mainloop() which must be the last statement in a turtle graphics program. Now, let us look into all four methods of mouse events with an example.Ī Turtle performs an action when the user clicks a mouse on the turtle. You will understand more when the methods are explained with an example. No need to worry if you are not clear about the parameters. add – True or False ( if True, a new binding will be added, otherwise, it will replace a former binding ).btn – number of a mouse button, default is 1 (i.e, left button).fun – a function with two arguments which will be called with the coordinates of the clicked point on the canvas.All four methods accept three parameters as listed below: ![]() ![]() We can perform a mouse event in four ways:īefore we look into all the four methods of mouse events, let us talk about the parameters the method takes in. Keyboard event – action triggered when a key from the keyboard is pressed.Īn action triggered due to clicks on the mouse button is called a mouse event.Mouse event – action triggered when a mouse button is clicked.Such actions performed when clicking a mouse or pressing the keys on a keyboard are called events in python turtle. The turtle performs some actions when the user hits certain keys on the keyboard or when the user clicks/moves the mouse.
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