Delphi编写的一个特效程序， 限制鼠标移动，隐藏标题栏上的按钮，窗体背景渐变，透明背景-Delphi effects of a procedure, the mouse movement restrictions, hidden Biaodilanshang button Windows Background gradual, transparent background

标题栏重绘,重载WindowProc。使用Delphi系统编写，请测试-The title bar is redrawn, heavy WindowProc. Written using Delphi system, test