Delphi源码实现在窗口中限制鼠标的移动范围，中允许鼠标在特定的范围内移动，在编写游戏或图像处理软件的时候能用上的Delphi小技巧。-Delphi source code to limit the range of movement of the mouse in the window, allows the mouse to move within a specific range, in the preparation of the game or image processing software can be used on Delphi tips.