Visual Basic

private bool DragActive = false;
System.Threading.Timer DragOrClickTimer = null;

private void DragOrClickTimer_Tick(object state)
{
    DragActive = true;
    Control c = (Button)state;
    c.Invalidate();
}

private void button1_MouseDown(object sender, MouseEventArgs e)
{
    DragOrClickTimer = new System.Threading.Timer(new System.Threading.TimerCallback(DragOrClickTimer_Tick), button1, 200, System.Threading.Timeout.Infinite);
}

private void button1_MouseUp(object sender, MouseEventArgs e)
{
    if (DragOrClickTimer != null)
    {
        DragOrClickTimer.Dispose();
        DragOrClickTimer = null;
    }
    if (DragActive)
    {
        DragActive = false;
        button1.Invalidate();
    }
    else
    {
        MessageBox.Show("Click!");
    }
}

private void button1_Paint(object sender, PaintEventArgs e)
{
    if (DragActive)
    {
        Graphics g = e.Graphics;
        Pen p = new Pen(Color.Red, 3);
        g.DrawRectangle(p, 5, 5, button1.Width - 11, button1.Height - 11);
    }
}

eg_Anubhava wrote:

user should be able to move,resize and drag and drop a control (a Textbox in my case).

Henry Minute wrote:

AFAIK you can only resize a non-multiline TextBox horizontally only

Luc Pattyn wrote:

(and you could change font sizes to get different TB heights)