How do you prevent a windows from being moved?

Question

How would i go about stopping a form from being moved. I have the form border style set as FixedSingle and would like to keep it this way because it looks good in vista :)

Answer 1

It's not all pretty (there is some flashing going on when you try to move the form), but you can use the LocationChanged property to keep the form where you want it:

private Point _desiredLocation;
// assign the _desiredLocation variable with the form location at some
// point in the code where you know that the form is in the "correct" position


private void Form_LocationChanged(object sender, EventArgs e)
{
    if (this.Location != _desiredLocation)
    {
        this.Location = _desiredLocation;
    }
}

Out of curiousity; why would you want to do this?

Answer 2

It's not a good practice to make your form immovable. I'd think agfain about it if I were you.
Anyway, you can do this by overridding the WinProc to disable the [Move] menuitem from the system menu.

[DllImport("user32.dll")]
private static extern Int32 EnableMenuItem ( System.IntPtr hMenu , Int32uIDEnableItem, Int32 uEnable);  
private const Int32 HTCAPTION = 0×00000002;  
private const Int32 MF_BYCOMMAND =0×00000000;  
private const Int32 MF_ENABLED =0×00000000;  
private const Int32 MF_GRAYED =0×00000001;  
private const Int32 MF_DISABLED =0×00000002; 
private const Int32 SC_MOVE = 0xF010; 
private const Int32 WM_NCLBUTTONDOWN = 0xA1;
private const Int32 WM_SYSCOMMAND = 0×112;
private const Int32 WM_INITMENUPOPUP = 0×117;

protected override void WndProc(ref System.Windows.Forms.Message m )
{
if (m.Msg == WM_INITMENUPOPUP)
{
    //handles popup of system menu
    if ((m.LParam.ToInt32() / 65536) != 0) // 'divide by 65536 to get hiword
    {
        Int32 AbleFlags = MF_ENABLED;
        if (!Moveable)
        {
            AbleFlags = MF_DISABLED | MF_GRAYED; // disable the move
        }
        EnableMenuItem(m.WParam, SC_MOVE, MF_BYCOMMAND | AbleFlags);
    }
}
if (!Moveable)
{
    if (m.Msg == WM_NCLBUTTONDOWN) //cancels the drag this is IMP
    {
        if (m.WParam.ToInt32() == HTCAPTION) return;
    }
    if (m.Msg == WM_SYSCOMMAND) // Cancels any clicks on move menu
    {
        if ((m.WParam.ToInt32() & 0xFFF0) == SC_MOVE) return;
    }
}
base.WndProc(ref m);
}  

Also, you can handle OnMove event of your form. But I think this will cause some flickering:

private void Form1_Move(object sender, EventArgs e)
{
    this.Location = defaultLocation;
}

Answer 3

1. Go to form events-> Location changed

write the following code

Location = new Point(this.Width,this.Height);