FSH PREVCHAR: Difference between revisions

Revision as of 04:44, 20 February 2020

This function provides the mechanism for decrementing a character point, taking into account DBCS considerations.

Syntax

FSH_PREVCHAR(pBeg, ppStr)

Parameters

pBeg: is a pointer to the beginning of a string.

ppStr: is a pointer to the character pointer of a string.

The value is decremented appropriately upon return. If it is at the beginning of a string, the pointer is not decremented. If it points to the second byte of a DBCS character, it will be decremented to point to the first byte of the character.

Returns

There are no error returns.

Calling Sequence

void far pascal FSH_PREVCHAR(pBeg, ppStr)

char far * pBeg;
char far * far * ppStr;

Remarks

The FSD is responsible for verifying the string pointer and checking for segment boundaries.

Note: OS/2 does not validate input parameters. An FSD, therefore, should call FSH_PROBEBUF where appropriate.

@@ Line 24: / Line 24: @@
 ;Note:   OS/2 does not validate input parameters. An FSD, therefore, should call FSH_PROBEBUF where appropriate.
-[[Category:FSH_PREVCHAR]]
+[[Category:IFS Interfaces]]
 {{DISPLAYTITLE:FSH_PREVCHAR}}