C#无标题Form点击任务栏图标最小化 .

const int WS_MINIMIZEBOX = 0x20000;
        const int CS_DBLCLKS = 0x8;
        protected override CreateParams CreateParams
        {
            get
            {
                CreateParams cp = base.CreateParams;
                cp.Style |= WS_MINIMIZEBOX;
                cp.ClassStyle |= CS_DBLCLKS;
                return cp;
            }
        }

窗体类中重写如上函数即可：
转自： http://blog.csdn.net/woaixiaozhe/article/details/7887641