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Font_StringWidth
Programmer's Reference Manuals
» Part 8 - Non-kernel input/output
» The Font Manager
» SWI Calls
» Font_StringWidth
Font_StringWidth
(SWI &40085)
| Entry | |
|---|---|
| R1 | Pointer to string |
| R2 | Max width in millipoints |
| R3 | Max height in millpoints |
| R4 | Split character, or -1 for none |
| R5 | Max string length |
| Exit | |
|---|---|
| R1 | Pointer to where scan ended |
| R2 | Width of scanned string |
| R3 | Height of scanned string |
| R4 | Number of split characters found |
| R5 | Length of scanned string |
Use
The purpose of this call is to calculate how wide a string would in the current font under the given limits.
Notes
This call is deprecated. Font_ScanString should be used instead.
The call can be used to calculate any of the following:
- Finding the caret position in a string if the co-ordinates are known
- Finding the caret co-ordinates if you know the position
- Finding the length of a string when using justification
- Calculating where to split lines when formatting (set R4=32)
- Calculating the required data for justification