Font_ListFonts (Menu) (changes)
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FontManager
» SWI Calls
» Font_ListFonts
» Font_ListFonts (Menu)
Font_ListFonts
(SWI &400A7)
| Entry | |
|---|---|
| R1 | Pointer to buffer for font menu, or 0 to find required size |
| R2 | Counter and flags |
| R3 | Size of buffer in R1 |
| R4 | Pointer to buffer for indirected data, or 0 to find required size |
| R5 | Size of buffer in R4 |
| R6 | Pointer to identifier to tick, or 0 for none, or 1 for System Font |
| Exit | |
|---|---|
| R2 | New count, or -1 if no more |
| R3 | Required size of buffer in R1 if R1 = 0, or 0 if the menu is null, otherwise length of data placed in buffer |
| R5 | Required size of buffer in R4 if R4 = 0, otherwise length of data placed in buffer |
Flags values
| Bit | Meaning |
|---|---|
| 0-15 | Counter, or 0 for first call |
| 19 | Return menu definition in R1, indirected data in R4 |
| 20 | Place System Font at head of menu |
| 21 | Tick font in R6, and its parent |
| 22 | Return list of encodings rather than fonts |
| 23-31 | Reserved; must be 0 |
Use
This call creates a list of fonts arranged as a menu.
Notes
For this form of the call, only bits 19-22 of the flags in R2 should be used. All other bits must be clear.
The returning definition is suitable for opening with Wimp_CreateMenu. Font_DecodeMenu can be used to work out which font was selected.
See also
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