[gadamopoulos] 74127: [UXTHEME] -Fix most new tests for DrawThemeParentBackground. Hackfix CloseThemeData.

Author: gadamopoulos
Date: Wed Mar  8 15:08:56 2017
New Revision: 74127

URL: http://svn.reactos.org/svn/reactos?rev=74127&view=rev
Log:
[UXTHEME] -Fix most new tests for DrawThemeParentBackground. Hackfix CloseThemeData.

Modified:
    trunk/reactos/dll/win32/uxtheme/draw.c
    trunk/reactos/dll/win32/uxtheme/system.c

Modified: trunk/reactos/dll/win32/uxtheme/draw.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/uxtheme/draw.c?r…
==============================================================================
--- trunk/reactos/dll/win32/uxtheme/draw.c	[iso-8859-1] (original)
+++ trunk/reactos/dll/win32/uxtheme/draw.c	[iso-8859-1] Wed Mar  8 15:08:56 2017
@@ -78,9 +78,17 @@
     int hasClip = -1;
     
     TRACE("(%p,%p,%p)\n", hwnd, hdc, prc);
+
+    if (!IsWindow(hwnd) || !hdc)
+        return E_HANDLE;
+
+    if (prc && IsBadReadPtr (prc, sizeof(RECT)))
+        return E_POINTER;
+
     hParent = GetParent(hwnd);
     if(!hParent)
-        hParent = hwnd;
+        return S_OK;
+
     if(prc) {
         rt = *prc;
         MapWindowPoints(hwnd, hParent, (LPPOINT)&rt, 2);

Modified: trunk/reactos/dll/win32/uxtheme/system.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/uxtheme/system.c…
==============================================================================
--- trunk/reactos/dll/win32/uxtheme/system.c	[iso-8859-1] (original)
+++ trunk/reactos/dll/win32/uxtheme/system.c	[iso-8859-1] Wed Mar  8 15:08:56 2017
@@ -897,6 +897,8 @@
     TRACE("(%p)\n", hTheme);
     if(!hTheme || hTheme == INVALID_HANDLE_VALUE)
         return E_HANDLE;
+    if(IsBadReadPtr (hTheme, sizeof(THEME_CLASS))) /* This check is a hack! */
+        return E_HANDLE;
     return MSSTYLES_CloseThemeClass(hTheme);
 }