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Font_DecodeMenu
Programmer's Reference Manuals
» Part 8 - Non-kernel input/output
» The Font Manager
» SWI Calls
» Font_DecodeMenu
Font_DecodeMenu
(SWI &400A0)
| Entry | |
|---|---|
| R0 | Font_DecodeMenu Flags |
| R1 | Pointer to menu definition, as per Font_ListFonts |
| R2 | Pointer to menu selection, as per Menu_Selection within Wimp_Poll |
| R3 | Pointer to buffer to contain result, or 0 to return size |
| R4 | Size of buffer (if R3 <> 0) |
| Exit | |
|---|---|
| R0 | Preserved |
| R1 | Preserved |
| R2 | Pointer to rest of menu selections |
| R3 | Preserved |
| R4 | Size of buffer required, or 0 for no font selection |
Use
This purpose of this call is to decode the selection made from a font menu.
Notes
The definition of the font menu is returned in the same format as used by Font_ListFonts.
The format of the returned string depends on whether the names of the fonts or font encodings have been specified in the Messages_n_ file within the font directory.
If no Messagen file was found (and hence the Font Manager has found the font names by scanning the directory tree) the name field is absent.
Details of the Font_DecodeMenu Result are available.
Experimentation of this call suggests that passing in a selection block pointing at System Font will generate an error, rather than set R4 = 0.
See also
- Font_DecodeMenu Flags
- Font_DecodeMenu Result
- Font_ListFonts
- Message_Selection?
- Wimp_Poll