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authordkf <donal.k.fellows@manchester.ac.uk>2012-07-04 07:09:40 (GMT)
committerdkf <donal.k.fellows@manchester.ac.uk>2012-07-04 07:09:40 (GMT)
commit9dee089fa2567d307056363c20eb69c53b4e1655 (patch)
treef601a0cf95af6e9aeea8f330063f37565515f418 /doc/GetIndex.3
parent6de91b6b7d469c5f8d511700b75689df23e43fd1 (diff)
parentd3104ac52bdca1849c62445954323c841fcd5009 (diff)
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-rw-r--r--doc/GetIndex.310
1 files changed, 8 insertions, 2 deletions
diff --git a/doc/GetIndex.3 b/doc/GetIndex.3
index f60feb5..50607ae 100644
--- a/doc/GetIndex.3
+++ b/doc/GetIndex.3
@@ -32,10 +32,16 @@ table entry.
.AP "const char *const" *tablePtr in
An array of null-terminated strings. The end of the array is marked
by a NULL string pointer.
+Note that references to the \fItablePtr\fR may be retained in the
+internal representation of \fIobjPtr\fR, so this should represent the
+address of a statically-allocated array.
.AP "const void" *structTablePtr in
An array of arbitrary type, typically some \fBstruct\fR type.
The first member of the structure must be a null-terminated string.
The size of the structure is given by \fIoffset\fR.
+Note that references to the \fIstructTablePtr\fR may be retained in the
+internal representation of \fIobjPtr\fR, so this should represent the
+address of a statically-allocated array of structures.
.AP int offset in
The offset to add to structTablePtr to get to the next entry.
The end of the array is marked by a NULL string pointer.
@@ -51,10 +57,10 @@ The index of the string in \fItablePtr\fR that matches the value of
.BE
.SH DESCRIPTION
.PP
-This procedure provides an efficient way for looking up keywords,
+These procedures provide an efficient way for looking up keywords,
switch names, option names, and similar things where the value of
an object must be one of a predefined set of values.
-\fIObjPtr\fR is compared against each of
+\fBTcl_GetIndexFromObj\fR compares \fIobjPtr\fR against each of
the strings in \fItablePtr\fR to find a match. A match occurs if
\fIobjPtr\fR's string value is identical to one of the strings in
\fItablePtr\fR, or if it is a non-empty unique abbreviation