Introduction - If you have any usage issues, please Google them yourself
Delphi: Delphi7 development achieved by drawing software source code, you can draw a given round, rectangular, linear graphs, select the blank space on the right click on the graphic, you can draw graphics, can also choose the color and graphics filling, but the function is indeed relatively simple, not even Windows built-in drawing powerful, as Delphi programming novice, learn about is useful.