资 源 简 介
设计一个鼠标程序,在按下Ctrl键的同时按下鼠标左键,在窗口中拖动鼠标,可以画出一个圆;在按下Shift键的同时按下鼠标左键,在窗口中拖动鼠标,画出一个矩形。-The design of a mouse procedures, press the Ctrl key while pressing the left mouse button, drag the mouse in the window, you can draw a circle in pressing Shift key while pressing the left mouse button, drag the mouse in the window , draw a rectangle.