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This routine invalidates a region of the window by firing the [[on.paint]] event, thus forcing it get repainted.<br />
This routine invalidates a region of the window by firing the [[on.paint]] event, thus forcing it get repainted.<br />
x and y default to (0, 0) and width and height default to the pixel width and height of the window.<br />
x and y default to (0, 0) and width and height default to the pixel width and height of the window.<br />These arguments are optional.
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== Good to know ==
== 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.
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.
Repainting only a part of the widget (thanks to providing the necessary arguments) only currently works on-calc, not on the software.
== See also ==
== See also ==
