Move form without titlebar

Question

Hello,

How can I move a form without a titlebar?

Answer 1

Declare 2 Member variables in Form:

private Point lastPoint;

private bool mouseDown;

Add Event handlers to 3 events of the form i.e MouseDown, MouseMove and MouseUP

In MouseDown Handler put this code:

this.mouseDown = true;

this.lastPoint = new Point(e.X, e.Y);

In MouseMove Handler put this code:

if(this.mouseDown)

     this.Location = new Point(this.Left - (this.lastPoint.X - e.X), this.Top - (this.lastPoint.Y - e.Y));

In Last Put this In MouseUP:

this.mouseDown = false;

That's it! Cheers ;)

Answer 2

Hi,

Two ways. First:

//API functions to move the form
public const int WM_NCLBUTTONDOWN = 0xA1;
public const int HTCAPTION = 0x2;
[DllImportAttribute("user32.dll")]
public static extern bool ReleaseCapture();
[DllImportAttribute("user32.dll")]
public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);

And in your mouse down event of the form:

public void Form1_MouseDown(object sender, MouseEventArgs e)
{
//If the left mouse is pressed, release form for movement
if (e.Button == MouseButtons.Left)
{
ReleaseCapture();
SendMessage(Handle, WM_NCLBUTTONDOWN, HTCAPTION, 0);
}

 

Second:

protected override void WndProc(ref Message m)
{
            base.WndProc(ref m);

            int WM_NCHITTEST = 0x84;
            if (m.Msg == WM_NCHITTEST)
            {
                int HTCLIENT = 1;
                int HTCAPTION = 2;
                if (m.Result.ToInt32() == HTCLIENT)
                    m.Result = (IntPtr)HTCAPTION;
            }
}

I use the second. Its much simplier and doesn't use any API's. Though the first method is the one that I was using during my VB6 days...

 

cheers,

Paul June A. Domag

Answer 3

Thanks, this will help me!

Answer 4

 

RizwanSharp that was such a great help. You rule!!!