[jgardou] 47386: [USER32] - Change ChangeDisplaySettingsExA to look more like wine's one [WIN32K] - Return correct value if buffer is to small in UserChangeDisplaySettings (wine tests) - Do not set an invalid size to the devmode we're passing ti UserChangeDisplaySettings, we might access garbage Now all ChangeDisplaySettings related wine tests pass.

Author: jgardou
Date: Fri May 28 23:58:33 2010
New Revision: 47386

URL: http://svn.reactos.org/svn/reactos?rev=47386&view=rev
Log:
[USER32]
  - Change ChangeDisplaySettingsExA to look more like wine's one
[WIN32K]
  - Return correct value if buffer is to small in UserChangeDisplaySettings (wine tests)
  - Do not set an invalid size to the devmode we're passing ti UserChangeDisplaySettings, we might access garbage
Now all ChangeDisplaySettings related wine tests pass.

Modified:
    branches/reactos-yarotows/dll/win32/user32/misc/display.c
    branches/reactos-yarotows/subsystems/win32/win32k/ntuser/display.c

Modified: branches/reactos-yarotows/dll/win32/user32/misc/display.c
URL: http://svn.reactos.org/svn/reactos/branches/reactos-yarotows/dll/win32/user3...
==============================================================================
--- branches/reactos-yarotows/dll/win32/user32/misc/display.c [iso-8859-1] (original)
+++ branches/reactos-yarotows/dll/win32/user32/misc/display.c [iso-8859-1] Fri May 28 23:58:33 2010
@@ -457,7 +457,6 @@
   LONG rc;
   UNICODE_STRING DeviceName;
   PUNICODE_STRING pDeviceName = &DeviceName;
-  LPDEVMODEW pDevModeW;

if (lpszDeviceName != NULL)
     {
@@ -471,14 +470,19 @@
     pDeviceName = NULL;

if (lpDevMode != NULL)
+  {
+    LPDEVMODEW pDevModeW;
     pDevModeW = GdiConvertToDevmodeW(lpDevMode);
+    if(pDevModeW)
+    {
+      rc = NtUserChangeDisplaySettings ( pDeviceName, pDevModeW, hwnd, dwflags, lParam );
+      RtlFreeHeap(GetProcessHeap(), 0, pDevModeW);
+    }
+    else
+      rc = DISP_CHANGE_SUCCESSFUL;
+  }
   else
-    pDevModeW = NULL;
-
-  rc = NtUserChangeDisplaySettings ( pDeviceName, pDevModeW, hwnd, dwflags, lParam );
-
-  if (pDevModeW != NULL)
-    RtlFreeHeap(GetProcessHeap(), 0, pDevModeW);
+    rc = NtUserChangeDisplaySettings ( pDeviceName, NULL, hwnd, dwflags, lParam );

if (lpszDeviceName != NULL)
     RtlFreeUnicodeString ( &DeviceName );
@@ -539,6 +543,6 @@
   DWORD dwflags)
 {
   if(lpDevMode)
-    lpDevMode->dmDriverExtra = 0; 
+    lpDevMode->dmDriverExtra = 0;
   return ChangeDisplaySettingsExW ( NULL, lpDevMode, NULL, dwflags, 0 );
 }

Modified: branches/reactos-yarotows/subsystems/win32/win32k/ntuser/display.c
URL: http://svn.reactos.org/svn/reactos/branches/reactos-yarotows/subsystems/win3...
==============================================================================
--- branches/reactos-yarotows/subsystems/win32/win32k/ntuser/display.c [iso-8859-1] (original)
+++ branches/reactos-yarotows/subsystems/win32/win32k/ntuser/display.c [iso-8859-1] Fri May 28 23:58:33 2010
@@ -708,7 +708,7 @@
         }
     }
     else if (pdm->dmSize < FIELD_OFFSET(DEVMODEW, dmFields))
-        return DISP_CHANGE_FAILED;
+        return DISP_CHANGE_BADMODE; /* This is what winXP SP3 returns */
     else
         dm = *pdm;

@@ -899,7 +899,6 @@
             /* Probe and copy the full DEVMODE */
             ProbeForRead(lpDevMode, dmLocal.dmSize, 1);
             RtlCopyMemory(&dmLocal, lpDevMode, dmLocal.dmSize);
-            dmLocal.dmSize = sizeof(dmLocal);
         }
         _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
         {