Delphi实现图像热点功能,实现一张图片上不同形状区域的热点,定义椭圆形、四边形、三角形的区域变量的热点,相关代码如下:   var   thepoint:array[1..8]oftpoint;//存储多边形顶点坐标   count:integer;   pointnum:array[1..2]ofinteger;   begin   //四边形顶点坐标,首末点封闭   thepoint[1]:=point(135,99);   thepoint[2]:=point(105,183);   thepoint[3]:=point(129,20