Winform 窗体实现圆角展示

#region 界面实现圆角
private void LoginForm_Resize(object sender, EventArgs e)
{
if (this.WindowState == FormWindowState.Normal)
{
SetWindowRegion();
}
else
{
this.Region = null;
}
} public void SetWindowRegion()
{
System.Drawing.Drawing2D.GraphicsPath FormPath;
FormPath = new System.Drawing.Drawing2D.GraphicsPath();
Rectangle rect = new Rectangle(0, 0, this.Width, this.Height);
FormPath = GetRoundedRectPath(rect, 10);//10代表圆角角度大小
this.Region = new Region(FormPath);
} /// <summary>
///
/// </summary>
/// <param name="rect">窗体大小</param>
/// <param name="radius">圆角大小</param>
/// <returns></returns>
private GraphicsPath GetRoundedRectPath(Rectangle rect, int radius)
{
int diameter = radius;
Rectangle arcRect = new Rectangle(rect.Location, new Size(diameter, diameter));
GraphicsPath path = new GraphicsPath(); path.AddArc(arcRect, 180, 90);//左上角 arcRect.X = rect.Right - diameter;//右上角
path.AddArc(arcRect, 270, 90); arcRect.Y = rect.Bottom - diameter;// 右下角
path.AddArc(arcRect, 0, 90); arcRect.X = rect.Left;// 左下角
path.AddArc(arcRect, 90, 90);
path.CloseFigure();
return path;
} #endregion