From 4e381837a02b9069d2d7593933cc146df1d3400e Mon Sep 17 00:00:00 2001
From: Timo Kreuzer <timo.kreuzer@reactos.org>
Date: Thu, 3 Jun 2010 19:35:05 +0000
Subject: [PATCH] [GDI32API] add IsHandleValid and use it SelectObject test

svn path=/trunk/; revision=47549
---
 rostests/apitests/gdi32api/gdi32api.c           | 16 ++++++++++++++++
 rostests/apitests/gdi32api/gdi32api.h           |  1 +
 rostests/apitests/gdi32api/tests/SelectObject.c |  2 ++
 3 files changed, 19 insertions(+)

diff --git a/rostests/apitests/gdi32api/gdi32api.c b/rostests/apitests/gdi32api/gdi32api.c
index ab8889503a5..245c40112ff 100644
--- a/rostests/apitests/gdi32api/gdi32api.c
+++ b/rostests/apitests/gdi32api/gdi32api.c
@@ -18,6 +18,22 @@ MyGdiQueryTable()
 	return pPeb->GdiSharedHandleTable;
 }
 
+BOOL
+IsHandleValid(HGDIOBJ hobj)
+{
+    USHORT Index = (ULONG_PTR)hobj;
+    PGDI_TABLE_ENTRY pentry = &GdiHandleTable[Index];
+
+    if (pentry->KernelData == NULL ||
+        pentry->KernelData < (PVOID)0x80000000 ||
+        (USHORT)pentry->FullUnique != (USHORT)((ULONG_PTR)hobj >> 16))
+    {
+        return FALSE;
+    }
+    
+    return TRUE;
+}
+
 int APIENTRY
 WinMain(HINSTANCE hInstance,
         HINSTANCE hPrevInstance,
diff --git a/rostests/apitests/gdi32api/gdi32api.h b/rostests/apitests/gdi32api/gdi32api.h
index 73ec2a95a5b..8811be18235 100644
--- a/rostests/apitests/gdi32api/gdi32api.h
+++ b/rostests/apitests/gdi32api/gdi32api.h
@@ -20,6 +20,7 @@
 
 extern HINSTANCE g_hInstance;
 extern PGDI_TABLE_ENTRY GdiHandleTable;
+BOOL IsHandleValid(HGDIOBJ hobj);
 
 #endif /* _GDITEST_H */
 
diff --git a/rostests/apitests/gdi32api/tests/SelectObject.c b/rostests/apitests/gdi32api/tests/SelectObject.c
index 0df71e9837c..cb476f872b7 100644
--- a/rostests/apitests/gdi32api/tests/SelectObject.c
+++ b/rostests/apitests/gdi32api/tests/SelectObject.c
@@ -82,6 +82,8 @@ Test_SelectObject(PTESTINFO pti)
 	DeleteObject(hOldObj);
 	RTEST((UINT_PTR)SelectObject(hDC, hNewObj) == SIMPLEREGION); // ??? Why this?
 	DeleteObject(hNewObj);
+	TEST(IsHandleValid(hNewObj) == TRUE);
+	
 	RTEST(GetLastError() == ERROR_SUCCESS);
 
 	/* Test BITMAP */
-- 
2.17.1