From 9f05b8229f1dd0045479021a47e1d3f4701490b6 Mon Sep 17 00:00:00 2001
From: Andreas Mohr <amohr@codeweavers.com>
Date: Mon, 12 Feb 2001 18:08:31 +0000
Subject: [PATCH] Check PROPSHEETPAGEA.pfnCallback for NULL pointer if
 PSP_USECALLBACK is given.

---
 dlls/comctl32/propsheet.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/comctl32/propsheet.c b/dlls/comctl32/propsheet.c
index 087833d9394..1b179513b52 100644
--- a/dlls/comctl32/propsheet.c
+++ b/dlls/comctl32/propsheet.c
@@ -199,7 +199,7 @@ BOOL PROPSHEET_CollectPageInfo(LPCPROPSHEETPAGEA lppsp,
    * Process property page flags.
    */
   dwFlags = lppsp->dwFlags;
-  psInfo->proppage[index].useCallback = dwFlags & PSP_USECALLBACK;
+  psInfo->proppage[index].useCallback = (dwFlags & PSP_USECALLBACK) && (lppsp->pfnCallback);
   psInfo->proppage[index].hasHelp = dwFlags & PSP_HASHELP;
   psInfo->proppage[index].hasIcon = dwFlags & (PSP_USEHICON | PSP_USEICONID);