JCL Help:StrRNScanW
JCL Help: StrRNScanW Function
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Summary
StrRNScan returns the length of the consecutive characters from the end of S1 which do not appear in S2.
Pascal
function StrRNScanW(const Str1: PWideChar; const Str2: PWideChar): SizeInt;
Parameters
| Parameters | Description |
| S1 | Pointer to the end of the source string which must have have a #0 character at the start. |
| S2 | The sequence (set) of characters to test against. |
Description
StrRNScanW is identical to StrNScanW with 2 small differences. The first one is that the number of consecutive characters at the END of S1 is returned (not from the start). Secondly, S1 is traversed in backward direction, so it should point to the end of the actual string to be determined and there should a #0 character at the beginning of S1 to terminate the loop. S2 is used as it is in StrNScanW and points to the beginning of a sequence of characters. This function is useful for buffers which contain a string in reversed order. This is often the case for macro buffers which get the content of a string a single character at a time, ending with #0 which is then at the physical start of the string.
See Also
StrNScan
About
Unit
Donator
Mike Lischke
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