The mod attribute contains information about the state of keyboard modifiers (SHIFT, CTRL, ALT, etc.). The key attribute of keyboard events contains the value of what key was pressed or released. You can also find a list of constants for keyboard keysĪ keyboard event occurs when a key is pressed ( KEYDOWN) and when a key is released ( KEYUP) Note that ACTIVEEVENT, VIDEORESIZE and VIDEOEXPOSE are consideredĪs "legacy" events, the use of pygame2 WINDOWEVENT API is recommended over The following is a list event types with theirĬhanged in pygame 2.0.1: The unicode attribute was added to KEYUP event. The function _name() get the string name from an event idĬan be used to get a string representing the name of the event type.Įvents that come from the system will have a guaranteed set of memberĪttributes based on the type. While debugging and experimenting, you can print an event object for a quickĭisplay of its type and members. They are the same type and have identical attribute values. It is recommended all user events follow this system.Įvents support equality and inequality comparisons. User defined events can get a customĮvent number with _type() make custom user event type. User defined events should have a value in the inclusive range The event type identifier is in between the values of NOEVENT and Their own new events with the () pygame object for representing events function. The event object has no method functions. Of the event object (as member lookups are passed through to the object'sĭictionary values). _dict_ event attribute dictionary attribute or directly as an attribute Any of theĮvent specific attributes can be accessed through the The event type identifier isĪccessible as the event type identifier. By default, all event types can be placed on the queue.Īll pygame object for representing events instances contain an event type identifierĪnd attributes specific to that event type. _allowed() control which events are allowed on the queue and _blocked() control which events are allowed on the queue toĬhange this filtering. Performance by blocking certain event types from the queue. The event queue also offers some simple filtering which can slightly help There are a variety of ways to access the queued events, from simplyĬhecking for the existence of events, to grabbing them directly off the stack. The event queue contains pygame object for representing events event objects. Note: Joysticks will not send any events until the device has been initialized. Usually, this should be called once per game loop. With the system, you will need to call () internally process pygame event handlers to keepĮverything current. System window manager and other parts of the platform. This method, remember that pygame requires some form of communication with the Pygame.mouse pygame module to work with the mouse, pygame.key pygame module to work with the keyboard, and pygame.joystick Pygame module for interacting with joysticks, gamepads, and trackballs. To get the state of various input devices, you can forego the event queue andĪccess the input devices directly with their appropriate modules: _blocked() control which events are allowed on the queue to limit which events get queued. Not handling events may cause your system to decide your To prevent lost events,Įspecially input events which signal a quit command, your program must handleĮvents every frame (with (), (), The queue becomes full new events are quietly dropped. The event queue has an upper limit on the number of events it can hold. Initialized and a video mode not set, the event queue may not work properly. The input queue is heavilyĭependent on the pygame.display pygame module to control the display window and screen module. This module help you manage that event queue. handles all its event messaging through an event queue. ("Element at the top of the queue: "+queue.poll()) If the queue is empty this method returns null. The poll() method of the Queue interface returns the object at the top of the current queue and removes it. } Output Element at the top of the queue: Java ("Element at the top of the queue: "+queue.peek()) The p eek() method returns the object at the top of the current queue, without removing it. The first element put in the queue is the first element taken out from it. It is an arrangement of the type First-In-First-Out (FIFO). This represents a collection that is indented to hold data before processing.
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