[reactos] 01/02: [USER32] Fix SetWindowWord/Long

[Timo Kreuzer]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=05cd3406e7ae5040497fc5...

commit 05cd3406e7ae5040497fc517baa81663802ebc2f
Author:     Timo Kreuzer [e-mail]
AuthorDate: Fri May 12 15:55:47 2023 +0300
Commit:     Timo Kreuzer [e-mail]
CommitDate: Thu May 25 18:56:02 2023 +0300

[USER32] Fix SetWindowWord/Long

These must use the corresponding NtUserSetWindowWord/Long function and cannot use NtUserSetWindowLongPtr, otherwise the function can fail, when there is only space for a LONG, but not for a LONG_PTR at the specified offset.
---
 win32ss/user/ntuser/window.c        | 2 +-
 win32ss/user/user32/windows/class.c | 9 ++++++---
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/win32ss/user/ntuser/window.c b/win32ss/user/ntuser/window.c
index 7bc57864b78..b4ab2d6e69f 100644
--- a/win32ss/user/ntuser/window.c
+++ b/win32ss/user/ntuser/window.c
@@ -4148,7 +4148,7 @@ NtUserSetWindowWord(HWND hWnd, INT Index, WORD NewValue)

if ((ULONG)Index > (Window->cbwndExtra - sizeof(WORD)))
    {
-      EngSetLastError(ERROR_INVALID_PARAMETER);
+      EngSetLastError(ERROR_INVALID_INDEX);
       RETURN( 0);
    }

diff --git a/win32ss/user/user32/windows/class.c b/win32ss/user/user32/windows/class.c
index 6abaf350bc1..63c84a46e60 100644
--- a/win32ss/user/user32/windows/class.c
+++ b/win32ss/user/user32/windows/class.c
@@ -1666,7 +1666,8 @@ SetWindowWord ( HWND hWnd,int nIndex,WORD wNewWord )
         }
         break;
     }
-    return (WORD)NtUserSetWindowLongPtr(hWnd, nIndex, wNewWord, FALSE);
+    /* DO NOT USE NtUserSetWindowLong(Ptr)! */
+    return NtUserSetWindowWord(hWnd, nIndex, wNewWord);
 }

/*
@@ -1680,7 +1681,8 @@ SetWindowLongA(
   int nIndex,
   LONG dwNewLong)
 {
-    return (LONG)NtUserSetWindowLongPtr(hWnd, nIndex, dwNewLong, TRUE);
+    /* DO NOT USE NtUserSetWindowLongPtr! */
+    return NtUserSetWindowLong(hWnd, nIndex, dwNewLong, TRUE);
 }

/*
@@ -1693,7 +1695,8 @@ SetWindowLongW(
   int nIndex,
   LONG dwNewLong)
 {
-    return (LONG)NtUserSetWindowLongPtr(hWnd, nIndex, dwNewLong, FALSE);
+    /* DO NOT USE NtUserSetWindowLongPtr! */
+    return NtUserSetWindowLong(hWnd, nIndex, dwNewLong, FALSE);
 }

#ifdef _WIN64