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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.
<br />
<br />
! Parameter !! Type !! Description
! Parameter !! Type !! Description
|-
|-
| <u>x</u> || number || x-coordinate of the upper-left origin.
| <u><center>x</center></u> || number || x-coordinate of the upper-left origin.
|-
|-
| <u>y</u> || number || y-coordinate of the upper-left origin.
| <u><center>y</center></u> || number || y-coordinate of the upper-left origin.
|-
|-
| <u>width</u> || number || width of the region to be refreshed.
| <u><center>width</center></u> || number || width of the region to be refreshed.
|-
|-
| <u>height</u> || number || height of the region to be refreshed.
| <u><center>height</center></u> || number || height of the region to be refreshed.
|}
|}
== 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 ==
