A fast and easily customised operating system
for ARM devices
Font_Paint
FontManager
» SWI Calls
» Font_Paint
Font_Paint
(SWI &40086)
| Entry | |
|---|---|
| R0 | Font handle (if applicable) |
| R1 | Pointer to string (may include control characters) |
| R2 | Flags |
| R3 | X |
| R4 | Y |
| R5 | Pointer to block (if applicable) |
| R6 | Pointer to transformation matrix (if applicable) |
| R7 | Length (if applicable) |
| Exit | |
|---|---|
| - | All registers preserved |
Use
This call paints a string to the screen using the currently selected font, or a specific font (as per flags).
Notes
Any VDU origin previously specified is ignored and absolute co-ordinates are assumed.
Underline and rubout do not work unless the transformed x-axis is parallel (not anti-parallel) to the output x-axis. (Anti-parallel means being parallel, but in the opposite direction to the original.)
See also
Social
Follow us on
and
and
ROOL Store
Buy RISC OS Open merchandise here, including SD cards for Raspberry Pi and more.