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Left or Right?

On mouse move determine if the mouse is on left or right of form

Left or Right?

On mouse move determine if the mouse is on left or right of form

The code below uses a Boolean expression that said to display "Left" if the mouse was on the left, or "Right" otherwise.
Notice that the X and Y value display and the word "Left" or "Right" is concatenated to that using +=.

In the properties of the form, click the and select the MouseMove event. Write the code as shown below:

 private void Form1_MouseMove(object sender, MouseEventArgs e)
 {
    this.Text = "X=" + e.X + " Y=" + e.Y;
    if(e.X <this.Width/2)
    {
       this.Text += " Left";
    }
    else
    {
       this.Text += " Right";
    }
}

Experiment: Change the code above to display "Top" or "Bottom"