12 Flushing

1	Basic Commands
2	Position Operations
3	Color Operations
4	Draw, Clear, and Flip Operations
5	World Operations
6	Miscellaneous Operations
7	An Example
8	A More Complicated Example
9	Protecting Graphics Operations
10	Mouse Operations
11	Keyboard Operations
12	Flushing
13	Graphics Library as a Unit

在本页中：

函数
(viewport-flush-input viewport) → void?
viewport : viewport?

Empties all mouse and keyboard events in the input buffer of viewport.