oldSettings =
Screen('
ConfigureDisplay', setting, screenNumber, outputId
[, newwidth
][, newheight
][, newHz
][, newX
][, newY
]);
Query or change 'setting' for display output 'outputId' of screen
'screenNumber'.
This function allows you to configure the different attached display outputs of
a virtual screen.
Optionally sets new settings for that output.
Possible values for subfunction parameter 'setting':
'Brightness': Return or set brightness of an attached display device. Many
displays and systems don't support this function. brightness values are in the
range 0.0 to 1.0 from darkest to brightest. Returns old brightness setting.
'
NumberOutputs': Return number of active separate display outputs for given
screen 'screenNumber'.
'Scanout': Retrieve or set scanout parameters for a given output 'outputId' of
screen 'screenNumber'. Returns a struct 'oldSettings' with the current settings
for that output. Only supported on Linux.
It returns and accepts the following optional parameters:
* Display resolution "newwidth" x "newheight", and nominal refresh rate "newHz".
* Panning ('newX','newY') - The location of the top-left corner of the display
in the framebuffer.
Providing invalid or incompatible settings will raise an error.
Screen('Resolutions'), Screen('Resolution');