=> R0 = window handle, or -1 for iconbar
R1 = icon handle
R2 = x0
R3 = y0
R4 = x1
R5 = y1
<= All registers preserved
This call resizes the given icon in the given window to the new bounding box coordinates as given in registers R2 to R5.
Justin Fletcher's WimpHack module provides an implementation of this SWI for Wimps pre 3.50. In the event of the Wimp_ResizeIcon not being available (e.g. test using OS_SWINumberFromString, one is able to load the WimpHack module and call WimpHack_ResizeIcon (&C0480) with the same parameters.
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