Windows requires a click to activate a window before a second click will select a button. How can I change this?

Question

My application is a C# Windows Forms Application and .Net somehow makes the default behavior of my main menu bar and tool strip buttons to be that you have to first click on my

Answer 1

easy and clean solution

public class MyToolStrip : System.Windows.Forms.ToolStrip
{
    protected override void OnMouseEnter(EventArgs e)
    {
        if (this.CanFocus && !this.Focused)
            this.Focus();

        base.OnMouseEnter(e);
    }
}