c# 制作不规则形状窗体

 

        private void Form1_Load(object sender, EventArgs e)

        {

            BackgroundImage = Image.FromFile(@"D:\heart.png");

            FormBorderStyle = FormBorderStyle.None;

            BackgroundImageLayout = ImageLayout.None;

            Color c = Color.Blue;

            BackColor = c;

            TransparencyKey = c;

            Width = BackgroundImage.Width;

            Height = BackgroundImage.Height;

        }