Alistair Leslie-Hughes : msdasql: IColumnsRowset::GetAvailableColumns return 3 meta columns to allow updating of a row.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 2690984822a8462aef5ad0b15aaf27a982f4f8ae
URL:    https://gitlab.winehq.org/wine/wine/-/commit/2690984822a8462aef5ad0b15aaf27a...

Author: Alistair Leslie-Hughes 
Date:   Wed Nov  8 20:01:28 2023 +1100

msdasql: IColumnsRowset::GetAvailableColumns return 3 meta columns to allow updating of a row.

---

dlls/msdasql/session.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/dlls/msdasql/session.c b/dlls/msdasql/session.c
index 056468f1054..1aa1132f40a 100644
--- a/dlls/msdasql/session.c
+++ b/dlls/msdasql/session.c
@@ -1202,6 +1202,7 @@ static ULONG WINAPI column_rs_Release(IColumnsRowset *iface)
 static HRESULT WINAPI column_rs_GetAvailableColumns(IColumnsRowset *iface, DBORDINAL *count, DBID **columns)
 {
     struct msdasql_rowset *rowset = impl_from_IColumnsRowset( iface );
+    const DBORDINAL extra_columns = 3;

TRACE("%p, %p, %p\n", rowset, count, columns);

@@ -1209,7 +1210,14 @@ static HRESULT WINAPI column_rs_GetAvailableColumns(IColumnsRowset *iface, DBORD
         return E_INVALIDARG;

*count = 0;
-    *columns = NULL;
+    *columns = CoTaskMemAlloc(sizeof(DBID) * extra_columns);
+    if (!*columns)
+        return E_OUTOFMEMORY;
+
+    *count = extra_columns;
+    *columns[0] = DBCOLUMN_BASETABLENAME;
+    *columns[1] = DBCOLUMN_BASECOLUMNNAME;
+    *columns[2] = DBCOLUMN_KEYCOLUMN;

return S_OK;
 }