Lua Ti-nspire platform.window:invalidate()

0
votes

I've searched many places for what platform.window:Invalidate() exactly does to the drawing screen on the Ti-Nspire, but sadly no in-depth answers come up.

Some sources say that by calling it 'invalidates' the window, or calls on.paint function. I don't exactly understand this, including why arguments can be included in the Invalidate(blah,blah2,blah3,blah4); does this mean that the on.paint function is called and can only repaint the portion defined, as if the other area not included in the argument is permanent?

1
luati-nspire

1 Answers

1
votes

I just found here that the on.paint gets 'flagged to fire' upon calling platform.window:Invalidate().

The entire window can be forced to repaint with by calling the function with no arguments : platform.window:invalidate()

If arguments are given, it will only be able to paint onto the area of x, y, width, height. The area outside of this outline is unaffected.