% matlab + osx ptb demo that will open a window on every attached display
clear all;
try
fprintf('OSX many windows demo\n\n\t');
fprintf('At the end of the demo, press any key to quit\n\n\t');
input('Hit the return key to continue.','s');
fprintf('Thanks.\n');
screens=Screen('Screens'); % vector with valid screen numbers, main is 0
% Open a double buffered fullscreen window on each attached screen
% and draw a gray background with a coloured square on it
for screenNumber=screens
i=screenNumber+1;
fprintf('Opening window on screen #%d\n', screenNumber);
[w(i) sRect]=Screen('OpenWindow', screenNumber, 0,[],32,2);
white=WhiteIndex(w(i));
black=BlackIndex(w(i));
gray=round((white+black)/2);
% not defining some values hangs the program
Screen('TextFont',w(i), 'Courier');
Screen('TextSize',w(i), 100);
Screen('TextStyle', w(i), 0);
[x,y] = RectCenter(sRect);
Screen('FillRect',w(i), gray);
Screen('DrawText',w(i), ['Screen #' num2str(i-1)],x-300,y,[255*rand(1,3)]);
Screen('Flip', w(i));
end
while KbCheck; end
tEnd=GetSecs+5;
while ~KbCheck & GetSecs<tEnd; end
Screen('CloseAll');
fprintf('\nEnd of demo\n');
catch
%this "catch" section executes in case of an error in the "try" section
%above. Importantly, it closes the onscreen window if its open.
Screen('CloseAll');
rethrow(lasterror);
end %try..catch..
