CODEWITHSUNDEEP
c#movemenustripborderless
Sean
Sean

Reputation: 8731

Move window without border

How do I move a window that does not have a border. There is no empty space on the application, all that is available is a webbrowser and a menustrip. I would like the users to be able to move the window by dragging the menu strip. How do I code this? I have tried a few code blocks I have found online, but none of them worked.

Upvotes: 18

Views: 34806

Answers (8)

Ricardo Fercher
Ricardo Fercher

Reputation: 977

Just put the start point into an 2D Array like this:

public partial class mainForm : Form
{
    //Global variables for Moving a Borderless Form
    private bool dragging = false;
    private Point startPoint = new Point(0, 0); 


    public mainForm()
    {
        InitializeComponent();
    }

    private void mainForm_MouseDown(object sender, MouseEventArgs e)
    {
        dragging = true;
        startPoint = new Point(e.X, e.Y);

    }

    private void mainForm_MouseUp(object sender, MouseEventArgs e)
    {
        dragging = false;
    }

    private void mainForm_MouseMove(object sender, MouseEventArgs e)
    {
        if (dragging)
        {
            Point p = PointToScreen(e.Location);
            Location = new Point(p.X - this.startPoint.X, p.Y - this.startPoint.Y);

        }

    }
}

Upvotes: 2

Rekless
Rekless

Reputation: 169

I had to use System.Runtime.InteropServices.DllImportAttribute - just thought I would comment and let you all know.

Upvotes: 0

Dudeman
Dudeman

Reputation: 1

Mbithi Kioko is on the right track but i would do it this way.

    bool dragging = false;
    int xOffset = 0;
    int yOffset = 0;

    private void Form1_MouseDown(object sender, MouseEventArgs e)
    {
        dragging = true;

        xOffset = Cursor.Position.X - this.Location.X;
        yOffset = Cursor.Position.Y - this.Location.Y;
    }

    private void Form1_MouseMove(object sender, MouseEventArgs e)
    {
        if (dragging)
        {
            this.Location = new Point(Cursor.Position.X - xOffset, Cursor.Position.Y - yOffset);
            this.Update();
        }
    }

    private void Form1_MouseUp(object sender, MouseEventArgs e)
    {
        dragging = false;
    }

Upvotes: 0

Ciel Phantomhive
Ciel Phantomhive

Reputation: 251

Here is the .Net Way

    private bool dragging = false;
    private Point dragCursorPoint;
    private Point dragFormPoint;

    private void Form1_MouseDown(object sender, MouseEventArgs e)
    {
        dragging = true;
        dragCursorPoint = Cursor.Position;
        dragFormPoint = this.Location;
    }

    private void Form1_MouseMove(object sender, MouseEventArgs e)
    {
        if (dragging)
        {
            Point dif = Point.Subtract(Cursor.Position, new Size(dragCursorPoint));
            this.Location = Point.Add(dragFormPoint, new Size(dif));
        }
    }

    private void Form1_MouseUp(object sender, MouseEventArgs e)
    {
        dragging = false;
    }

that's it.

Upvotes: 25

h3nk
h3nk

Reputation: 11

If you are using a Panel you have to add this in the

YourForm.Designer.cs

this.panel1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.panel1_MouseDown);

and this in the

YourForm.cs

 public const int WM_NCLBUTTONDOWN = 0xA1;
        public const int HT_CAPTION = 0x2;

        [DllImportAttribute("user32.dll")]
        public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);
        [DllImportAttribute("user32.dll")]
        public static extern bool ReleaseCapture();

        private void panel1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                ReleaseCapture();
                SendMessage(Handle, WM_NCLBUTTONDOWN, HT_CAPTION, 0);
            }
        }

Upvotes: 0

NateShoffner
NateShoffner

Reputation: 16839

This Code Project article should help you accomplish this. I've used this myself with no problems. This is the jist of it:

public const int WM_NCLBUTTONDOWN = 0xA1;
public const int HT_CAPTION = 0x2;

[DllImportAttribute("user32.dll")]
public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);
[DllImportAttribute("user32.dll")]
public static extern bool ReleaseCapture();

private void Form1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{     
    if (e.Button == MouseButtons.Left)
    {
        ReleaseCapture();
        SendMessage(Handle, WM_NCLBUTTONDOWN, HT_CAPTION, 0);
    }
}

This will basically "trick" the window manager into thinking that it is grabbing the title bar of the winform.

To apply it to your project, just use the MouseDown event from the MenuStrip.

Upvotes: 39

Doobi
Doobi

Reputation: 4782

I haven't tried it, but if you can handle the "OnMouseDown" and "onMouseUp" events on the menu bar:

  • On mouse down - Move the window according to the mouse movement
  • Stop tracking the mouse movement on mouse up, or mouse out

Upvotes: 0

escargot agile
escargot agile

Reputation: 22399

You can fake your menustrip, for example using a panel with a label instead. And then you can handle this manually: when the user clicks the label, a popup menu will open, and when the user drags the label, the window will move. But I would advise against such workarounds, because it's not a standard GUI behavior, and you might get your users confused.

Upvotes: 0

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