wilson@husc8.HARVARD.EDU (Randy Wilson) (05/02/87)
Does anyone know how the Mac accomplishes the displaying of the mouse pointer on the screen? It seems to me that the cursor is actually drawn on the screen, then Quickdraw discovers whenever an operation is going to draw over it, and replaces the original bits, allows the drawing to occur, then replaces the image of the cursor. This would explain the flashing of the cursor that happens when drawing is happening under or near it. Does anyone have a more detailed understanding of the process, or a different explanation? It seems like this method would be inefficient in certain instances. I would like to create other objects that would work in the same way (much like the buggy "System bugs" DA did). Any info would be greatly appreciated. Thanks in advance, Randy Wilson wilson@husc8.UUCP