pygame.mouse

pygame module to work with the mouse

The mouse functions can be used to get the current state of the mouse device. These functions can also alter the system cursor for the mouse.

When the display mode is set, the event queue will start receiving mouse events. The mouse buttons generate pygame.MOUSEBUTTONDOWN and pygame.MOUSEBUTTONUP events when they are pressed and released. These events contain a button attribute representing which button was pressed. The mouse wheel will generate pygame.MOUSEBUTTONDOWN and pygame.MOUSEBUTTONUP events when rolled. The button will be set to 4 when the wheel is rolled up, and to button 5 when the wheel is rolled down. Whenever the mouse is moved it generates a pygame.MOUSEMOTION event. The mouse movement is broken into small and accurate motion events. As the mouse is moving many motion events will be placed on the queue. Mouse motion events that are not properly cleaned from the event queue are the primary reason the event queue fills up.

If the mouse cursor is hidden, and input is grabbed to the current display the mouse will enter a virtual input mode, where the relative movements of the mouse will never be stopped by the borders of the screen. See the functions pygame.mouse.set_visible() and pygame.event.set_grab() to get this configured.

pygame.mouse.get_pressed() -> (button1, button2, button3)

get the state of the mouse buttons

Returns a sequence of booleans representing the state of all the mouse buttons. A true value means the mouse is currently being pressed at the time of the call.

Note, to get all of the mouse events it is better to use either

pygame.event.wait() or pygame.event.get() and check all of those events

to see if they are MOUSEBUTTONDOWN, MOUSEBUTTONUP, or MOUSEMOTION.

Note, that on X11 some X servers use middle button emulation. When you click both buttons 1 and 3 at the same time a 2 button event can be emitted.

Note, remember to call pygame.event.get() before this function. Otherwise it will not work.

pygame.mouse.get_pos() -> (x, y)

get the mouse cursor position

Returns the X and Y position of the mouse cursor. The position is relative the the top-left corner of the display. The cursor position can be located outside of the display window, but is always constrained to the screen.

pygame.mouse.get_rel() -> (x, y)

get the amount of mouse movement

Returns the amount of movement in X and Y since the previous call to this function. The relative movement of the mouse cursor is constrained to the edges of the screen, but see the virtual input mouse mode for a way around this. Virtual input mode is described at the top of the page.

pygame.mouse.set_pos([x, y]) -> None

set the mouse cursor position

Set the current mouse position to arguments given. If the mouse cursor is visible it will jump to the new coordinates. Moving the mouse will generate a new pygame.MOUSEMOTION event.

pygame.mouse.set_visible(bool) -> bool

hide or show the mouse cursor

If the bool argument is true, the mouse cursor will be visible. This will return the previous visible state of the cursor.

pygame.mouse.get_focused() -> bool

check if the display is receiving mouse input

Returns true when pygame is receiving mouse input events (or, in windowing terminology, is "active" or has the "focus").

This method is most useful when working in a window. By contrast, in full-screen mode, this method always returns true.

Note: under MS Windows, the window that has the mouse focus also has the keyboard focus. But under X-Windows, one window can receive mouse events and another receive keyboard events. pygame.mouse.get_focused() indicates whether the pygame window receives mouse events.

pygame.mouse.set_cursor(size, hotspot, xormasks, andmasks) -> None

set the image for the system mouse cursor

When the mouse cursor is visible, it will be displayed as a black and white bitmap using the given bitmask arrays. The size is a sequence containing the cursor width and height. Hotspot is a sequence containing the cursor hotspot position. xormasks is a sequence of bytes containing the cursor xor data masks. Lastly is andmasks, a sequence of bytes containing the cursor bitmask data.

Width must be a multiple of 8, and the mask arrays must be the correct size for the given width and height. Otherwise an exception is raised.

See the pygame.cursor module for help creating default and custom masks for the system cursor.

pygame.mouse.get_cursor() -> (size, hotspot, xormasks, andmasks)

get the image for the system mouse cursor

Get the information about the mouse system cursor. The return value is the same data as the arguments passed into pygame.mouse.set_cursor().