From 370382c71bc7bc02366685a3b2aa4999a558ab5e Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Fri, 7 Aug 1998 22:07:03 +0000
Subject: [PATCH 1/1] added call to _CrtSetDbgFlag(_CRTDBG_REPORT_FLAG) |
 _CRTDBG_LEAK_CHECK_DF) for VC++: it gives at the end of the program report
 about memory leaks if any similar to the one produced by the wxwin memory
 diagnostic classes (but it works without problems with VC++ and costs nothing
 to add)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@457 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 src/msw/app.cpp | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/msw/app.cpp b/src/msw/app.cpp
index af539d7bf0..f236497107 100644
--- a/src/msw/app.cpp
+++ b/src/msw/app.cpp
@@ -52,6 +52,11 @@
 #include <commctrl.h>
 #endif
 
+// use debug CRT functions for memory leak detections in VC++
+#if defined(__WXDEBUG__) && defined(_MSC_VER)
+  #include <crtdbg.h>
+#endif
+
 extern char *wxBuffer;
 extern char *wxOsVersion;
 extern wxList *wxWinHandleList;
@@ -332,6 +337,7 @@ void wxApp::CleanUp()
     delete wxWinHandleList ;
 
   // do it as the very last thing because everything else can log messages
+  wxLog::DontCreateOnDemand();
   delete wxLog::SetActiveTarget(NULL);
 }
 
@@ -424,6 +430,13 @@ int wxEntry(WXHINSTANCE hInstance, WXHINSTANCE WXUNUSED(hPrevInstance), char *m_
 {
   wxhInstance = (HINSTANCE) hInstance;
 
+  #if defined(__WXDEBUG__) && defined(_MSC_VER)
+    // do check for memory leaks on program exit
+    // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
+    //  deallocated memory which may be used to simulate low-memory condition)
+    _CrtSetDbgFlag(_CrtSetDbgFlag(_CRTDBG_REPORT_FLAG) | _CRTDBG_LEAK_CHECK_DF);
+  #endif // debug build under MS VC++
+
 #if (WXDEBUG && USE_MEMORY_TRACING) || USE_DEBUG_CONTEXT
 
 #if !defined(_WINDLL)
@@ -434,7 +447,7 @@ int wxEntry(WXHINSTANCE hInstance, WXHINSTANCE WXUNUSED(hPrevInstance), char *m_
   ostream* oStr = new ostream(sBuf) ;
   wxDebugContext::SetStream(oStr, sBuf);
 
-#endif
+#endif  // USE_MEMORY_TRACING
 
   if (!wxApp::Initialize((WXHINSTANCE) wxhInstance))
     return 0;
-- 
2.47.2