Question

I often use FormBorderStyle = SizableToolWindow with forms on smaller resolution displays (ie netbooks) for the smaller title-bar height and border sizes.

The MaximimizeBox and MinimizeBox properties are also set to True however it appears they are ignored because only the Close button is displayed.

I have also tried the customizing the window style using the following:

protected override CreateParams CreateParams
{
    get
    {

        CreateParams cp = base.CreateParams;



        cp.Style |= 0x00020000; // Turn on Minimize button

        cp.Style |= 0x00010000; // Turn on Maximize button

        return cp;
    }
}

But the Maximize and Minimize buttons are still not shown.

Sizable tool windows are actually shown in the taskbar by default, and can be minimized/maximized by right clicking on the taskbar icon, but this is far less convenient then just showing the buttons on the title-bar as usual.

Any suggestions?

Answer 1

Short of implementing a custom title bar and non-client area, you can’t do it. As nobugz says, that combination of styles simply isn’t supported by Windows. You could roll your own min/max buttons on top of the standard toolwindow title bar, but I don’t recommend it.