Tells Allegro to display a mouse pointer on the screen.
Tells Allegro to display a mouse pointer on the screen. This will only
work if the timer module has been installed. The mouse pointer will be
drawn onto the specified bitmap, which should normally be `screen' (see
later for information about bitmaps). To hide the mouse pointer, call
Warning: if you draw anything onto the screen while the pointer is
visible, a mouse movement interrupt could occur in the middle of your
drawing operation. If this happens the mouse buffering and graphics drawing
code will get confused and will leave 'mouse droppings' all over the
screen. To prevent this, you must make sure you turn off the mouse
pointer whenever you draw onto the screen. This is not needed if you are
using a hardware cursor.
Note: you must not be showing a mouse pointer on a bitmap at the time that
the bitmap is destroyed with destroy_bitmap(), e.g. call show_mouse(NULL);
before destroying the bitmap. This does not apply to `screen' since you
never destroy `screen' with destroy_bitmap().
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