hmm ok the idea i do it is : i put sprite with all buttons i want like pause,resume , levels,... these stuffs doesn't need text they need shapes for that so in 1 sprite i have about 8-10 frames so put them with animation speed 0 and i put them on screen and choose the frame i want ,
so in event if mouse click and frame = 1 -->> pause game or whatever... and so on with all frames if you want create many buttons in screen like you want to create 3 buttons with i click pause you have to make 3 different sprites or there is another way but i think its harder to understand on the future ^^
good luck on buttons :P