恶魔界

模仿QQ主窗体自动收缩的功能，展示部分功能。

        private void Timer1_Tick(object sender, EventArgs e)
        {
            if (Top < 3 && Tem_place == 0)//如果窗体被移到屏幕的顶部
            {
                if (Handle == FormNameAt(Cursor.Position.X, Cursor.Position.Y))//当鼠标移致到该窗体上
                {
                    panel_Title.Tag = 1;//设置标识，用于判断窗体在屏幕顶部
                    timer2.Enabled = false;//不对窗体进行拉伸操作
                    Top = 0;//使窗体致顶
                }
                else
                {
                    panel_Title.Tag = 1;//设置标识，用于判断窗体在屏幕顶部
                    timer2.Enabled = true;//将窗体在顶部进行隐藏
                }
            }
            else
            {
                if (Left < 3 || Right > GetSystemMetrics(0) - 3)//如果窗体被移到屏幕的左端或右端
                {
                    if (Left < 3)//如果窗体被移到屏幕的左端
                    {
                        if (Handle == FormNameAt(Cursor.Position.X, Cursor.Position.Y))//当鼠标移致到该窗体上
                        {
                            panel_Title.Tag = 2;//设置标识，用于判断窗体在屏幕左端
                            timer2.Enabled = false;
                            Frm_Height = Height;
                            Left = 0;//使窗体致左
                            Top = 0;
                            Height = Screen.AllScreens[0].Bounds.Height;
                            Tem_place = 1;
                        }
                        else
                        {
                            panel_Title.Tag = 2;
                            timer2.Enabled = true;//将窗体在左端进行隐藏
                        }
                    }
                    if (Right > GetSystemMetrics(0) - 3)//如果窗体被移到屏幕的右端
                    {
                        if (Handle == FormNameAt(Cursor.Position.X, Cursor.Position.Y))//当鼠标移致到该窗体上
                        {
                            panel_Title.Tag = 3;//设置标识，用于判断窗体在屏幕右端
                            timer2.Enabled = false;
                            Frm_Height = Height;
                            Left = GetSystemMetrics(0) - Width;//使窗体致右
                            Top = 0;
                            Height = Screen.AllScreens[0].Bounds.Height;
                            Tem_place = 1;
                        }
                        else
                        {
                            panel_Title.Tag = 3;
                            timer2.Enabled = true;//将窗体在右端进行隐藏
                        }
                    }
                }
            }
        }