Question

I’ve been doing this for years. But now it’s just not working.

private void Form1_Deactivate(object sender, EventArgs e)
        {
            this.Size = new Size(30, 29);
            txt.Visible = false;
            lbl.Visible = false;
        }

The form just does not change Width. But, as above, the 3 controls DO become invisible.

Any suggestions?

Answer 1

Windows have an absolute minimum width of 134 pixels (at least on Windows 7)

To circumvent this minimum, you can set FormBorderStyle to FixedToolWindow or SizableToolWindow. (Or handle Windows messages)