Width of the form can not be less than 140 pixels. Why?

Question

I created default Windows Forms Application project in Visual Studio 2012. When I run program then saw that width of form can not be less than 140 pixels. Why? And how to overcome this strange restriction?

Answer 1

I was looking for a solution and MinimumSize(0,0) didn't had any effect. Figured out, that MinimumSize set to (1,1) actually fixed the problem and after showing my form it was properly sized smaller than 140px.

Column click event on (ListView)_csvLv that should trigger a popup dialog:

        var topAnchor = _csvLv.PointToScreen(new Point(
            _csvLv
                .Columns
                .OfType<ColumnHeader>()
                .Where(c => c.DisplayIndex < e.Column)
                .Sum(c => c.Width),
            0));

        Left = topAnchor.X;
        Top = topAnchor.Y;

        MinimumSize = new Size(1,1);
        ClientSize = new Size(_csvLv.Columns[e.Column].Width, 100);

        ShowDialog();

Answer 2

Users wouldn't be able to use the window's minimize, maximize, and close buttons at that top. I don't believe you can change that behaviour with the Sizable FormBorderStyle. It's a usability thing.

If you remove the border, by setting it to None for example, you can set it to whatever you want programmatically by doing:

form.Width = [...];

You can resize further forms with border types: None, FixedToolWindow, and SizableToolWindow. The ToolWindows won't let you go below a certain amount as well, but None will let you do anything above 2px. You could set it to some value below that, without getting an exception, but it won't do anything.

Answer 3

Try this. Autosize no AutosizeMode growOnly FormBorderStyle SizableToolWindow <== this one did it I still can move the form and resize it (width) less tan 112