Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
I have Question 1-how to applay undo/redo for draw panel 2-how to draw string on panel with keypress event 3-how to make image that i draw it in panel not dipeared even click another buttun to draw another ship :(( :((
