[reactos] 01/02: [WIN32SS] Require at least the amount of extra memory, not the exact amount This fixes Civ II trying to create scrollbars based on 'native' scrollbars.

[Mark Jansen]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=e022d8d7cb72bc611d699…

commit e022d8d7cb72bc611d6990062ad0f2962c0cab1d
Author:     Mark Jansen <mark.jansen(a)reactos.org>
AuthorDate: Fri Jan 18 00:07:23 2019 +0100
Commit:     Mark Jansen <mark.jansen(a)reactos.org>
CommitDate: Mon Jan 21 22:25:29 2019 +0100

    [WIN32SS] Require at least the amount of extra memory, not the exact amount
    This fixes Civ II trying to create scrollbars based on 'native' scrollbars.
---
 win32ss/user/ntuser/scrollbar.c          | 2 +-
 win32ss/user/user32/controls/scrollbar.c | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/win32ss/user/ntuser/scrollbar.c b/win32ss/user/ntuser/scrollbar.c
index 582a603c1f..325be6fe49 100644
--- a/win32ss/user/ntuser/scrollbar.c
+++ b/win32ss/user/ntuser/scrollbar.c
@@ -90,7 +90,7 @@ IntGetSBData(PWND pwnd, INT Bar)
        case SB_VERT:
          return &pSBInfo->Vert;
        case SB_CTL:
-         if ( pwnd->cbwndExtra != (sizeof(SBWND)-sizeof(WND)) )
+         if ( pwnd->cbwndExtra < (sizeof(SBWND)-sizeof(WND)) )
          {
             ERR("IntGetSBData Wrong Extra bytes for CTL Scrollbar!\n");
             return 0;
diff --git a/win32ss/user/user32/controls/scrollbar.c
b/win32ss/user/user32/controls/scrollbar.c
index 0a4913353c..3eb0242961 100644
--- a/win32ss/user/user32/controls/scrollbar.c
+++ b/win32ss/user/user32/controls/scrollbar.c
@@ -100,7 +100,7 @@ IntGetSBData(PWND pwnd, INT Bar)
        case SB_VERT:
          return &pSBInfo->Vert;
        case SB_CTL:
-         if ( pwnd->cbwndExtra != (sizeof(SBWND)-sizeof(WND)) )
+         if ( pwnd->cbwndExtra < (sizeof(SBWND)-sizeof(WND)) )
          {
             ERR("IntGetSBData Wrong Extra bytes for CTL Scrollbar!\n");
             return 0;
@@ -1186,7 +1186,7 @@ ScrollBarWndProc_common(WNDPROC DefWindowProc, HWND Wnd, UINT Msg,
WPARAM wParam
      if (!pWnd->fnid)
      {
         TRACE("ScrollBar CTL size %d\n", (sizeof(SBWND)-sizeof(WND)));
-        if ( pWnd->cbwndExtra != (sizeof(SBWND)-sizeof(WND)) )
+        if ( pWnd->cbwndExtra < (sizeof(SBWND)-sizeof(WND)) )
         {
            ERR("Wrong Extra bytes for Scrollbar!\n");
            return 0;