memory debugging using VC++ debug CRT works for DLL wxWin builds as well.

The relevant macros are now in include/wx/msw/msvcrt.h


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1540 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/msvcrt.h

@@ -0,0 +1,49 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/msw/msvcrt.h
+// Purpose:     macros to use some non-standard features of MS Visual C++
+//              C run-time library
+// Author:      Vadim Zeitlin
+// Modified by:
+// Created:     31.01.1999
+// RCS-ID:      $Id$
+// Copyright:   (c) Vadim Zeitlin
+// Licence:     wxWindows license
+/////////////////////////////////////////////////////////////////////////////
+
+// the goal of this file is to define wxCrtSetDbgFlag() macro which may be
+// used like this:
+//      wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
+// to turn on memory leak checks for programs compiled with Microsoft Visual
+// C++ (5.0+). The macro will expand to nothing under other compilers.
+
+#ifndef _MSW_MSVCRT_H_
+#define _MSW_MSVCRT_H_
+
+// use debug CRT functions for memory leak detections in VC++ if we're not
+// using wxWindows own methods
+#if defined(__WXDEBUG__) && defined(_MSC_VER) && !wxUSE_GLOBAL_MEMORY_OPERATORS && !defined(__NO_VC_CRTDBG__)
+    #define wxUSE_VC_CRTDBG
+#else
+    #undef wxUSE_VC_CRTDBG
+#endif
+
+#ifdef wxUSE_VC_CRTDBG
+    // VC++ uses this macro as debug/release mode indicator
+    #ifndef _DEBUG
+        #define _DEBUG
+    #endif
+
+    // Need to undef new if including crtdbg.h which redefines new itself
+    #ifdef new
+        #undef new
+    #endif
+
+    #include <crtdbg.h>
+
+    #define wxCrtSetDbgFlag(flag) \
+        _CrtSetDbgFlag(_CrtSetDbgFlag(_CRTDBG_REPORT_FLAG) | (flag))
+#else // !using VC CRT
+    #define wxCrtSetDbgFlag(flag)
+#endif // wxUSE_VC_CRTDBG
+
+#endif // _MSW_MSVCRT_H_