X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a97cd79840edc011b8d2f4331b0f36c678c8abbf..a6cb8040a8f73935791c44b8f1b8ac4711cb84f6:/include/wx/msw/wrapwin.h

diff --git a/include/wx/msw/wrapwin.h b/include/wx/msw/wrapwin.h
index a9a927d839..b7b6d6e24c 100644
--- a/include/wx/msw/wrapwin.h
+++ b/include/wx/msw/wrapwin.h
@@ -13,15 +13,37 @@
 
 #include "wx/platform.h"
 
+// strict type checking to detect conversion from HFOO to HBAR at compile-time
 #ifndef STRICT
     #define STRICT 1
 #endif
 
-// don't define min() and max() as macros, they conflict with standard C++ ones
+// this macro tells windows.h to not define min() and max() as macros: we need
+// this as otherwise they conflict with standard C++ functions
 #ifndef NOMINMAX
     #define NOMINMAX
 #endif // NOMINMAX
 
+
+// before including windows.h, define version macros at (currently) maximal
+// values because we do all our checks at run-time anyhow
+#ifndef WINVER
+    // the only exception to the above is MSVC 6 which has a time bomb in its
+    // headers: they warn against using them with WINVER >= 0x0500 as they
+    // contain only part of the declarations and they're not always correct, so
+    // don't define WINVER for it at all as this allows everything to work as
+    // expected both with standard VC6 headers (which define WINVER as 0x0400
+    // by default) and headers from a newer SDK (which may define it as 0x0500)
+    #if !defined(__VISUALC__) || (__VISUALC__ >= 1300)
+        #define WINVER 0x0600
+    #endif
+#endif
+
+#ifndef _WIN32_WINNT
+    #define _WIN32_WINNT 0x0600
+#endif
+
+
 #include <windows.h>
 
 #ifdef __WXWINCE__
@@ -37,21 +59,22 @@
     #include <shellapi.h>
 #endif // __WXWINCE__
 
+
+// #undef the macros defined in winsows.h which conflict with code elsewhere
 #include "wx/msw/winundef.h"
 
-// types DWORD_PTR, ULONG_PTR and so on might be not defined in old headers but
-// unfortunately I don't know of any standard way to test for this (as they're
-// typedefs and not #defines), so simply overwrite them in any case in Win32
-// mode -- and if compiling for Win64 they'd better have new headers anyhow
-//
-// this is ugly but what else can we do? even testing for compiler version
-// wouldn't help as you can perfectly well be using an older compiler (VC6)
-// with newer SDK headers
-#if !defined(__WIN64__) && !defined(__WXWINCE__)
+
+// Types DWORD_PTR, ULONG_PTR and so on are used for 64-bit compatability 
+// in the WINAPI SDK (they are an integral type that is the size of a
+// pointer) on MSVC 7 and later. However, they are not available in older 
+// Platform SDKs, and since they are typedefs and not #defines we simply 
+// overwrite them if there is a chance that they're not defined
+#if !defined(_MSC_VER) || (_MSC_VER < 1300)
     #define UINT_PTR unsigned int
+    #define LONG_PTR long
     #define ULONG_PTR unsigned long
     #define DWORD_PTR unsigned long
-#endif // !__WIN64__
+#endif // !defined(_MSC_VER) || _MSC_VER < 1300
 
 #endif // _WX_WRAPWIN_H_