platform.window:invalidate

platform.window:invalidate is a function that is part of platform.window.

This routine invalidates a region of the window and forces it to repaint.
x and y default to (0, 0) and width and height default to the pixel width and height of the window.

This has been introduced in TI-Nspire OS 3.0 (Changes).

Syntax

platform.window:invalidate([x, y, width, height])

Parameter	Type	Description
x	number	Description of arg1
y	number	Description of arg2
width	number	Description of arg3
height	number	Description of arg4

Examples

platform.window:invalidate()

platform.window:invalidate(0, 0, 50, 10)

Good to know

The entire window can be forced to repaint with by calling the function with no arguments : platform.window:invalidate() , allowing all parameters to take their default values.

See also

• platform.window
• on.paint