public DynamicForm()
{
Text = "";
AllowDrop = false;
FormBorderStyle = FormBorderStyle.None;
TopMost = true;
ShowInTaskbar = false;
MinimizeBox = false;
MaximizeBox = false;
DoubleBuffered = true;
MouseDown += _MouseDown;
MouseUp += _MouseUp;
blend = default(BlendOpt);
blend.BlendOp = 0;
blend.BlendFlags = 0;
blend.AlphaFormat = 1;
blend.SourceConstantAlpha = 255;
}
private static extern int UpdateLayeredWindow(IntPtr hwnd, IntPtr screenDc, ref Vector2 topPos, ref Vector2 size, IntPtr memDc, ref Vector2 pointSource, int crKey, ref BlendOpt pblend, int dwFlags);