I created that calculator using one canvas and 2 text actors ......You can't find any file inside the data folder !!!
Everything else including the frame are created using lines by the canvas ! [ there is only lines now , i will extent the frame ]
I think this demo will be a good file to draw lines in what shape we want ....That code is tooooo long , please be patient ... hehehehehehe
Info :
Press 0 to 9 keys to get your number into the text file....
Press + to add one number ...
Press = to get your answer ...
Press Back space to clear the text box.
The numbers are limited to 9999999.For the very first time when you reached that limit it show an error [ i mean mistake ]...sorry ....
Try it......
More file on this will come soon .......