1.首先,窗体的FormBorderStyle设置成None,不要控制边框。
2.然后,TransparencyKey和BackColor颜色设置成相同的,这样,窗体就透明了。
3.最后,窗体的拖动
private void pictureBox1_MouseMove(object sender, MouseEventArgs e){if (e.Button == MouseButtons.Left){this.Left += e.Location.X - this.oldX;//新的鼠标位置this.Top += e.Location.Y - this.oldY;}}private int oldX = 0; private int oldY = 0; private void pictureBox1_MouseDown(object sender, MouseEventArgs e) { if (e.Button == MouseButtons.Left) {this.oldX = e.Location.X; //鼠标原来位置this.oldY = e.Location.Y; } }