[GDI32|User32|Win32k]

- Fix ScrollDC ApiTest.

svn path=/trunk/; revision=51179

reactos/dll/win32/gdi32/misc/misc.c

@@ -275,7 +275,7 @@ HGDIOBJ
 FASTCALL
 hGetPEBHandle(HANDLECACHETYPE Type, COLORREF cr)
 {
-    int Number, Count, MaxNum, GdiType;
+    int Number, Offset, MaxNum, GdiType;
     HANDLE Lock;
     HGDIOBJ Handle = NULL;
 
@@ -289,19 +289,19 @@ hGetPEBHandle(HANDLECACHETYPE Type, COLORREF cr)
 
     if (Type == hctBrushHandle)
     {
-       Count = 0;
+       Offset = 0;
        MaxNum = CACHE_BRUSH_ENTRIES;
        GdiType = GDILoObjType_LO_BRUSH_TYPE;
     }
     else if (Type == hctPenHandle)
     {
-       Count = CACHE_BRUSH_ENTRIES;
+       Offset = CACHE_BRUSH_ENTRIES;
        MaxNum = CACHE_PEN_ENTRIES;
        GdiType = GDILoObjType_LO_PEN_TYPE;
     }
     else if (Type == hctRegionHandle)
     {
-       Count = CACHE_BRUSH_ENTRIES+CACHE_PEN_ENTRIES;
+       Offset = CACHE_BRUSH_ENTRIES+CACHE_PEN_ENTRIES;
        MaxNum = CACHE_REGION_ENTRIES;
        GdiType = GDILoObjType_LO_REGION_TYPE;
     }
@@ -314,7 +314,7 @@ hGetPEBHandle(HANDLECACHETYPE Type, COLORREF cr)
     {
        PBRUSH_ATTR pBrush_Attr;
        HGDIOBJ *hPtr;
-       hPtr = GdiHandleCache->Handle + Count;
+       hPtr = GdiHandleCache->Handle + Offset;
        Handle = hPtr[Number - 1];
 
        if (GdiGetHandleUserData( Handle, GdiType, (PVOID) &pBrush_Attr))
@@ -335,6 +335,10 @@ hGetPEBHandle(HANDLECACHETYPE Type, COLORREF cr)
              }
           }
        }
+       else
+       {
+          Handle = NULL;
+       }
     }
     (void)InterlockedExchangePointer((PVOID*)&GdiHandleCache->ulLock, Lock);
     return Handle;

reactos/dll/win32/user32/windows/paint.c

@@ -107,19 +107,19 @@ GetUpdateRect(
   pWnd = ValidateHwnd(Wnd);
   if (!pWnd)
      return FALSE;
-/*
+
   if ( pWnd->hrgnUpdate ||
        pWnd->state & (WNDS_SENDERASEBACKGROUND|WNDS_SENDNCPAINT|WNDS_UPDATEDIRTY|WNDS_PAINTNOTPROCESSED))
-  {*/
+  {
      return NtUserGetUpdateRect(Wnd, Rect, Erase);
-/*  }
+  }
 
   if (Rect)
   { // Did the Rgn update? No! Back set and shutup!
      Rect->left = Rect->right = Rect->top = Rect->bottom = 0;
   }
   return FALSE;  // msdn: "If there is no update region, the return value is zero."
-*/
+
 }
 
 
@@ -144,14 +144,14 @@ GetUpdateRgn(
   pWnd = ValidateHwnd(hWnd);
   if (!pWnd)
      return ERROR;
-/*
+
   if ( pWnd->hrgnUpdate ||
        pWnd->state & (WNDS_SENDERASEBACKGROUND|WNDS_SENDNCPAINT|WNDS_UPDATEDIRTY|WNDS_PAINTNOTPROCESSED))
-  {*/
+  {
      return NtUserGetUpdateRgn(hWnd, hRgn, bErase);
-/*  }
+  }
   SetRectRgn(hRgn, 0, 0, 0, 0);
-  return NULLREGION;*/
+  return NULLREGION;
 }
 
 
@@ -239,14 +239,14 @@ UpdateWindow(
 
   if (!pWnd)
      return FALSE;
-/*
+
   if ( pWnd->hrgnUpdate ||
        pWnd->state & WNDS_INTERNALPAINT ||
        pWnd->spwndChild )
-  {*/
+  {
      return NtUserCallHwndLock(hWnd, HWNDLOCK_ROUTINE_UPDATEWINDOW);
-/*  }
+  }
-  return TRUE;*/
+  return TRUE;
 }
 
 /*
@@ -286,7 +286,7 @@ GetWindowRgn(
   if (!Ret)
      return ERROR;
 
-  if (pWnd->fnid != FNID_DESKTOP)
+  if (hWnd != GetDesktopWindow()) // pWnd->fnid != FNID_DESKTOP)
      Ret = OffsetRgn(hRgn, -pWnd->rcWindow.left, -pWnd->rcWindow.top);
 
   if (pWnd->ExStyle & WS_EX_LAYOUTRTL)
@@ -320,7 +320,7 @@ GetWindowRgnBox(
   if (!Ret)
      return ERROR;
 
-  if (pWnd->fnid != FNID_DESKTOP)
+  if (hWnd != GetDesktopWindow()) // pWnd->fnid != FNID_DESKTOP)
      OffsetRect(lprc, -pWnd->rcWindow.left, -pWnd->rcWindow.top);
 
   if (pWnd->ExStyle & WS_EX_LAYOUTRTL)

reactos/subsystems/win32/win32k/ntuser/painting.c

@@ -1248,6 +1248,7 @@ UserScrollDC(
          hrgnOwn = hrgnUpdate;
          if (!NtGdiSetRectRgn(hrgnOwn, rcDst.left, rcDst.top, rcDst.right, rcDst.bottom))
          {
+            DC_UnlockDc(pDC);
             return ERROR;
          }
       }

reactos/subsystems/win32/win32k/objects/region.c

@@ -2080,6 +2080,7 @@ REGION_AllocUserRgnWithHandle(INT nRgn)
     {
        Entry = GDI_HANDLE_GET_ENTRY(GdiHandleTable, pRgn->BaseObject.hHmgr);
        Entry->UserData = AllocateObjectAttr();
+       RtlZeroMemory(Entry->UserData, sizeof(RGN_ATTR));
     }
     return pRgn;
 }
@@ -2090,6 +2091,7 @@ RGNOBJAPI_Lock(HRGN hRgn, PRGN_ATTR *ppRgn_Attr)
 {
   PGDI_TABLE_ENTRY Entry;
   PRGN_ATTR pRgn_Attr;
+  BOOL Hit = FALSE;
   PROSRGNDATA pRgn = NULL;
 
   pRgn = REGION_LockRgn(hRgn);
@@ -2103,8 +2105,9 @@ RGNOBJAPI_Lock(HRGN hRgn, PRGN_ATTR *ppRgn_Attr)
      {
         _SEH2_TRY
         {
-           if ( !(pRgn_Attr->AttrFlags & ATTR_CACHED) &&
+           if ( !(pRgn_Attr->AttrFlags & ATTR_CACHED) )
-                 pRgn_Attr->AttrFlags & (ATTR_RGN_VALID|ATTR_RGN_DIRTY) )
+           {
+              if ( pRgn_Attr->AttrFlags & (ATTR_RGN_VALID|ATTR_RGN_DIRTY) )
               {
                  switch (pRgn_Attr->Flags)
                  {
@@ -2123,11 +2126,21 @@ RGNOBJAPI_Lock(HRGN hRgn, PRGN_ATTR *ppRgn_Attr)
                  pRgn_Attr->AttrFlags &= ~ATTR_RGN_DIRTY;
               }
            }
+           else
+           { // This object is cached an waiting for it's resurrection by the users.
+              Hit = TRUE;
+           }
+        }
         _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
         {
         }
         _SEH2_END;
 
+        if (Hit)
+        {
+           REGION_UnlockRgn(pRgn);
+           return NULL;
+        }
         if (ppRgn_Attr)
            *ppRgn_Attr = pRgn_Attr;
      }