Making a window full screen (fully)

[Duck]

I'm building a full screen menu page for a front end, using the Taharez style. I'm using the layout editor.

The base of the page is a normal 'window' which tiles a texture across the screen. I have the title bar, and window border all turned off, to just get a plain rectangular window.

The window doesn't quite fill the screen, despite being scaled to 1.0 and positioned at 0. I think that the gaps are where the border of the window would normally render.

I tried setting the scale to greater than 1 (in the editor and in code), but CEGUI clamps it to 1, and so the gaps remain.

Is there a workaround for this? What else can I try?

Thanks,

PS. Great system. A big time saving over writing my own.