说明：  Delphi:今天与Delphi爱好者分享一款十字光标定位的Delphi源码实例，鼠标在地图上移动就会立即出现定位光标，可以应用于诸多需要十字光标的地方，本例仅是对十字光标原理的说明，更详细的应用请参阅相关源码。
(Delphi: today share a cross cursor positioning Delphi Delphi source code examples and lovers, move the mouse cursor will appear immediately locate on a map, can be used in many places need crosshairs, this case is only a description of the principles crosshairs more detailed application, please refer to the relevant source code.)