win32: rework CHECK_MEMORY_LEAKS to dump after static object deinit

win32/DumpAtEnd.cpp

@@ -0,0 +1,17 @@
+// uncomment to find memory leaks at end
+// #define CHECK_MEMORY_LEAKS
+
+// to also display file locations in some cases define _CRTDBG_MAP_ALLOC in the project properties
+
+#ifdef CHECK_MEMORY_LEAKS
+// hack to make sure this object is destructed last
+// msvc merges .CRT$XC in alphabetic order
+// might not work in other versions of MSVC
+#pragma init_seg(".CRT$XCB")
+struct CallDumpMemLeaksLast {
+	~CallDumpMemLeaksLast() {
+		_CrtDumpMemoryLeaks();
+	}
+};
+static CallDumpMemLeaksLast dump_last;
+#endif

win32/snes9xw.vcxproj

@@ -534,6 +534,7 @@
     <ClCompile Include="COpenGL.cpp" />
     <ClCompile Include="CXAudio2.cpp" />
     <ClCompile Include="CXML.cpp" />
+    <ClCompile Include="DumpAtEnd.cpp" />
     <ClCompile Include="dxerr.cpp" />
     <ClCompile Include="InputCustom.cpp" />
     <ClCompile Include="render.cpp" />

win32/snes9xw.vcxproj.filters

@@ -539,6 +539,9 @@
     <ClCompile Include="..\msu1.cpp">
       <Filter>APU</Filter>
     </ClCompile>
+    <ClCompile Include="DumpAtEnd.cpp">
+      <Filter>GUI</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="rsrc\nodrop.cur">

win32/wsnes9x.cpp

@@ -244,13 +244,6 @@
 #include "wlanguage.h"
 #include "../language.h"
 
-//uncomment to find memory leaks, with a line in WinMain
-//#define CHECK_MEMORY_LEAKS
-
-#ifdef CHECK_MEMORY_LEAKS
-	#include <crtdbg.h>
-#endif
-
 #include <commctrl.h>
 #include <io.h>
 #include <time.h>