h6. [[FilterManager]] h6(. » [[FilterManager SWI Calls|SWI Calls]] h6((. » [[Filter_RegisterPostIconFilter]] h6(((. » Wimp_GetRectangle Icon Filter Code h2. Wimp_GetRectangle Icon Filter Code |_<^{width:5em}. Entry | | |<^. R0 |<^. Window handle| |<^. R2 |<^. Task handle| |<^. R6 |<^. Minimum x| |<^. R7 |<^. Minimum y| |<^. R8 |<^. Maximum x| |<^. R9 |<^. Maximum y| |<^. R10 |<^. Window handle – 1| |<^. R12|<^. Value of R2 when filter registered| |_<^{width:5em}. Exit | | |<. R0|<. All registers preserved| h4. Notes This is called after the Wimp has redrawn the icons in a window, before moving onto the next rectangle. This allows applications to plot over the window's icons. You can probably modify the updated block, but R0 and R1 should probably remain as passed. h4. See also * [[Filter_DeRegisterPostIconFilter]] * [[Filter_RegisterPostIconFilter]]