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Wimp_GetRectangle Icon Filter Code
Programmer's Reference Manuals
» Part 7 - The Desktop
» The Filter Manager
» SWI Calls
» Filter_RegisterPostIconFilter
» Wimp_GetRectangle Icon Filter Code
Wimp_GetRectangle Icon Filter Code
| 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 |
| Exit | |
|---|---|
| R0 | All registers preserved |
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.