Find if cursor is on borders and corners of the textbox or on the remaining part of the control

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Hi Forum

I want to change the cursor style depending on mouse position in run time.
If the mouse is on borders of the text-box, then cursor style should be either SizeNS or SizeWE. If the mouse is on other part of the text-box, cursor style should be SizeAll.
Problem I am facing is, I am not able to find whether the current position of mouse is on borders or remaining portion of the text-box.

I will be highly thankful if anyone can guide a bit to solve this issue

Thanking in anticipation

NamitaS!!!

Posted 20-Apr-10 20:45pm

NamitaS

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OriginalGriff · Accepted Answer · 2010-04-20T21:22:00

Use the MouseMove event:

C#

private void button1_MouseMove(object sender, MouseEventArgs e)
    {
    Button b = sender as Button;
    if (b != null)
        {
        if (((e.X <= b.Margin.Left) || (e.X >= b.Width - b.Margin.Right)) ||
            ((e.Y <= b.Margin.Top) || (e.Y >= b.Height - b.Margin.Bottom)))
            {
            Cursor = Cursors.SizeAll;
            }
        else
            {
            Cursor = Cursors.Default;
            }
        }
    }

private void button1_MouseLeave(object sender, EventArgs e)
    {
    Cursor = Cursors.Default;
    }

The MouseLeave event is just there to ensure the cursor is restored to normal if it is moved quickly.
This shows a button and uses the margins, but it works for all controls, and you can specify your own edge limits.