getscreensizeinpixels

function screenSize = getscreensizeinpixels
%GETSCREENSIZEINPIXELS  Get screen size in pixels.
%		SZ = GETSCREENSIZEINPIXELS returns a 1x4 vector of doubles giving the
%		size of the display in pixels. On Windows, mex-function
%		GETSCREENSIZEINPIXELSPC is called to read the current settings rather
%		than reading a static copy made at MATLAB startup time. On other
%		systems, the static screen size is read using get(0, 'ScreenSize').
%
%		Markus Buehren
%		Last modified 20.04.2008 
%
%		See also GETSCREENSIZEINPIXELSPC.

if ispc
	% check if mex-file getscreensizeinpixelspc is available
	whichFile = which('getscreensizeinpixelspc');
	if isempty(whichFile) || strcmp(whichFile(end-1:end), '.m')
		% mex-function needs to be compiled
		mexFileName = which('getscreensizeinpixelspc.c');
		if ~isempty(mexFileName)
			disp(textwrap2(['Function getscreensizeinpixelspc.c needs to be ', ...
				'compiled once on your host. If Matlab asks you to select a ', ...
				'compiler, choose the builtin LCC compiler.', sprintf('\n')]));
			mex(mexFileName, '-outdir', fileparts(mexFileName));
		end
	end
	
	% get screen size
	screenSize = getscreensizeinpixelspc;
else
	currentUnits = get(0, 'Units');
	set(0, 'Units', 'pixels');
	screenSize = get(0, 'ScreenSize');
	set(0, 'Units', currentUnits);
end