diff --git a/build/cmake/setup.h.in b/build/cmake/setup.h.in
index 1a487555e8..72e69714d0 100644
--- a/build/cmake/setup.h.in
+++ b/build/cmake/setup.h.in
@@ -669,7 +669,7 @@
 
 #define wxUSE_GRAPHICS_GDIPLUS wxUSE_GRAPHICS_CONTEXT
 
-#if defined(_MSC_VER) && _MSC_VER >= 1600
+#if defined(_MSC_VER)
     #define wxUSE_GRAPHICS_DIRECT2D wxUSE_GRAPHICS_CONTEXT
 #else
     #cmakedefine01 wxUSE_GRAPHICS_DIRECT2D
@@ -684,7 +684,7 @@
 
 #cmakedefine01 wxUSE_ACTIVEX
 
-#if defined(_MSC_VER) && _MSC_VER >= 1700 && !defined(_USING_V110_SDK71_)
+#if defined(_MSC_VER)
     #cmakedefine01 wxUSE_WINRT
 #else
     #cmakedefine01 wxUSE_WINRT
diff --git a/include/msvc/wx/setup.h b/include/msvc/wx/setup.h
index cd7f2ca0d7..8958328f1f 100644
--- a/include/msvc/wx/setup.h
+++ b/include/msvc/wx/setup.h
@@ -54,20 +54,8 @@
 #ifdef wxMSVC_VERSION
     #define wxCOMPILER_PREFIX wxCONCAT(vc, wxMSVC_VERSION)
 #elif defined(wxMSVC_VERSION_AUTO) || defined(wxMSVC_VERSION_ABI_COMPAT)
-    #if _MSC_VER == 1300
-        #define wxCOMPILER_PREFIX vc70
-    #elif _MSC_VER == 1310
-        #define wxCOMPILER_PREFIX vc71
-    #elif _MSC_VER == 1400
-        #define wxCOMPILER_PREFIX vc80
-    #elif _MSC_VER == 1500
-        #define wxCOMPILER_PREFIX vc90
-    #elif _MSC_VER == 1600
-        #define wxCOMPILER_PREFIX vc100
-    #elif _MSC_VER == 1700
-        #define wxCOMPILER_PREFIX vc110
-    #elif _MSC_VER == 1800
-        #define wxCOMPILER_PREFIX vc120
+    #if _MSC_VER < 1900
+        #error "Unsupported MSVC compiler version, 2015 or later is required."
     #elif _MSC_VER >= 1900 && _MSC_VER < 2000
         #ifdef wxMSVC_VERSION_ABI_COMPAT
             #define wxCOMPILER_PREFIX vc14x
diff --git a/include/wx/compiler.h b/include/wx/compiler.h
index 59eab263a1..30a904c2ef 100644
--- a/include/wx/compiler.h
+++ b/include/wx/compiler.h
@@ -35,18 +35,8 @@
       define special symbols for different VC version instead of writing tests
       for magic numbers such as 1200, 1300 &c repeatedly
     */
-#if __VISUALC__ < 1400
-#   error "This Visual C++ version is not supported any longer (at least MSVC 2005 required)."
-#elif __VISUALC__ < 1500
-#   define __VISUALC8__
-#elif __VISUALC__ < 1600
-#   define __VISUALC9__
-#elif __VISUALC__ < 1700
-#   define __VISUALC10__
-#elif __VISUALC__ < 1800
-#   define __VISUALC11__
-#elif __VISUALC__ < 1900
-#   define __VISUALC12__
+#if __VISUALC__ < 1900
+#   error "This Visual C++ version is not supported any longer (at least MSVC 2015 required)."
 #elif __VISUALC__ < 2000
     /* There is no __VISUALC13__! */
 #   define __VISUALC14__
diff --git a/include/wx/defs.h b/include/wx/defs.h
index 8060b89808..928419066b 100644
--- a/include/wx/defs.h
+++ b/include/wx/defs.h
@@ -113,20 +113,6 @@
 #if wxUSE_STD_CONTAINERS
 #   pragma warning(disable:4275)
 #endif /* wxUSE_STD_CONTAINERS */
-
-#   ifdef __VISUALC5__
-    /* For VC++ 5.0 for release mode, the warning 'C4702: unreachable code */
-    /* is buggy, and occurs for code that does actually get executed */
-#   ifndef __WXDEBUG__
-#       pragma warning(disable:4702)    /* unreachable code */
-#   endif
-
-    /* The VC++ 5.0 warning 'C4003: not enough actual parameters for macro'
-     * is incompatible with the wxWidgets headers since it is given when
-     * parameters are empty but not missing. */
-#       pragma warning(disable:4003)    /* not enough actual parameters for macro */
-#   endif
-
     /*
        When compiling with VC++ 7 /Wp64 option we get thousands of warnings for
        conversion from size_t to int or long. Some precious few of them might
@@ -135,26 +121,22 @@
        everywhere this method is used though we are quite sure that using >4GB
        strings is a bad idea anyhow) so just disable it globally for now.
      */
-    #if wxCHECK_VISUALC_VERSION(7)
-        /* conversion from 'size_t' to 'unsigned long', possible loss of data */
-        #pragma warning(disable:4267)
-    #endif /* VC++ 7 or later */
+    /* conversion from 'size_t' to 'unsigned long', possible loss of data */
+    #pragma warning(disable:4267)
 
     /*
        VC++ 8 gives a warning when using standard functions such as sprintf,
        localtime, ... -- stop this madness, unless the user had already done it
      */
-    #if wxCHECK_VISUALC_VERSION(8)
-        #ifndef _CRT_SECURE_NO_DEPRECATE
-            #define _CRT_SECURE_NO_DEPRECATE 1
-        #endif
-        #ifndef _CRT_NON_CONFORMING_SWPRINTFS
-            #define _CRT_NON_CONFORMING_SWPRINTFS 1
-        #endif
-        #ifndef _SCL_SECURE_NO_WARNINGS
-            #define _SCL_SECURE_NO_WARNINGS 1
-        #endif
-    #endif /* VC++ 8 */
+    #ifndef _CRT_SECURE_NO_DEPRECATE
+        #define _CRT_SECURE_NO_DEPRECATE 1
+    #endif
+    #ifndef _CRT_NON_CONFORMING_SWPRINTFS
+        #define _CRT_NON_CONFORMING_SWPRINTFS 1
+    #endif
+    #ifndef _SCL_SECURE_NO_WARNINGS
+        #define _SCL_SECURE_NO_WARNINGS 1
+    #endif
 #endif /*  __VISUALC__ */
 
 /*
@@ -310,7 +292,7 @@ typedef short int WXTYPE;
 #elif defined(__clang__)
     #define wx_truncate_cast(t, x) static_cast<t>(x)
 
-#elif defined(__VISUALC__) && __VISUALC__ >= 1310
+#elif defined(__VISUALC__)
     template <typename T, typename X>
     inline T wx_truncate_cast_impl(X x)
     {
@@ -549,7 +531,7 @@ typedef short int WXTYPE;
     #endif
 #elif defined(__GNUC__)
     #define wxDEPRECATED_MSG(msg) __attribute__((deprecated(msg)))
-#elif wxCHECK_VISUALC_VERSION(8)
+#elif defined(__VISUALC__)
     #define wxDEPRECATED_MSG(msg) __declspec(deprecated("deprecated: " msg))
 #else
     #define wxDEPRECATED_MSG(msg) wxDEPRECATED_DECL
diff --git a/include/wx/features.h b/include/wx/features.h
index 7465b9fc5b..df4557ea64 100644
--- a/include/wx/features.h
+++ b/include/wx/features.h
@@ -71,8 +71,7 @@
 /* This is defined when the compiler provides some type of extended locale
    functions.  Otherwise, we implement them ourselves to only support the
    'C' locale */
-#if defined(HAVE_LOCALE_T) || \
-    (wxCHECK_VISUALC_VERSION(8))
+#if defined(HAVE_LOCALE_T) || defined(__VISUALC__)
     #define wxHAS_XLOCALE_SUPPORT
 #else
     #undef wxHAS_XLOCALE_SUPPORT
diff --git a/include/wx/filefn.h b/include/wx/filefn.h
index c2743864bc..b61282ec35 100644
--- a/include/wx/filefn.h
+++ b/include/wx/filefn.h
@@ -138,7 +138,7 @@ enum wxPosixPermissions
     #endif
 
     // detect compilers which have support for huge stdio files
-    #if wxCHECK_VISUALC_VERSION(8)
+    #if defined(__VISUALC__)
         #define wxHAS_HUGE_STDIO_FILES
         #define wxFseek _fseeki64
         #define wxFtell _ftelli64
diff --git a/include/wx/gtk/setup.h b/include/wx/gtk/setup.h
index 4504bd73b4..2a83959081 100644
--- a/include/wx/gtk/setup.h
+++ b/include/wx/gtk/setup.h
@@ -1629,14 +1629,12 @@
 
 // Enable support for Direct2D-based implementation of wxGraphicsContext.
 //
-// Default is 1 for compilers which support it, i.e. VC10+ currently. If you
-// use an earlier MSVC version or another compiler and installed the necessary
-// SDK components manually, you need to change this setting.
+// Default is 1 for compilers which support it, i.e. MSVS currently. If you
+// use another compiler and installed the necessary SDK components manually,
+// you need to change this setting.
 //
-// Recommended setting: 1 for faster and better quality graphics under Windows
-// 7 and later systems (if wxUSE_GRAPHICS_GDIPLUS is also enabled, earlier
-// systems will fall back on using GDI+).
-#if defined(_MSC_VER) && _MSC_VER >= 1600
+// Recommended setting: 1 for faster and better quality graphics.
+#if defined(_MSC_VER)
     #define wxUSE_GRAPHICS_DIRECT2D wxUSE_GRAPHICS_CONTEXT
 #else
     #define wxUSE_GRAPHICS_DIRECT2D 0
@@ -1683,12 +1681,10 @@
 
 // Enable WinRT support
 //
-// Default is 1 for compilers which support it, i.e. VS2012+ currently. If you
-// use an earlier MSVC version or another compiler and installed the necessary
-// SDK components manually, you need to change this setting.
+// Default is 1 for compilers which support it, i.e. MSVS currently.
 //
 // Recommended setting: 1
-#if defined(_MSC_VER) && _MSC_VER >= 1700 && !defined(_USING_V110_SDK71_)
+#if defined(_MSC_VER)
     #define wxUSE_WINRT 1
 #else
     #define wxUSE_WINRT 0
diff --git a/include/wx/msw/chkconf.h b/include/wx/msw/chkconf.h
index 1af43a6f98..e7a0c933ef 100644
--- a/include/wx/msw/chkconf.h
+++ b/include/wx/msw/chkconf.h
@@ -133,27 +133,6 @@
 #    endif
 #endif  /* wxUSE_WINSOCK2 */
 
-/*
- * Unfortunately we can't use compiler TLS support if the library can be used
- * inside a dynamically loaded DLL under Windows XP, as this can result in hard
- * to diagnose crashes due to the bugs in Windows TLS support, see #13116.
- *
- * So we disable it unless we can be certain that the code will never run under
- * XP, as is the case if we're using a compiler which doesn't support XP such
- * as MSVC 11+, unless it's used with the special "_xp" toolset, in which case
- * _USING_V110_SDK71_ is defined.
- *
- * However defining wxUSE_COMPILER_TLS as 2 overrides this safety check, see
- * the comments in wx/setup.h.
- */
-#if wxUSE_COMPILER_TLS == 1
-    #if !wxCHECK_VISUALC_VERSION(11) || defined(_USING_V110_SDK71_)
-        #undef wxUSE_COMPILER_TLS
-        #define wxUSE_COMPILER_TLS 0
-    #endif
-#endif
-
-
 /*
  * disable the settings which don't work for some compilers
  */
diff --git a/include/wx/msw/msvcrt.h b/include/wx/msw/msvcrt.h
index d79bdb3ac7..3411bcc7e7 100644
--- a/include/wx/msw/msvcrt.h
+++ b/include/wx/msw/msvcrt.h
@@ -37,15 +37,6 @@
 
     #include <stdlib.h>
 
-    // Defining _CRTBLD should never be necessary at all, but keep it for now
-    // as there is no time to retest all the compilers before 3.0 release.
-    // Definitely do not use it with MSVS 2013 as defining it results in errors
-    // if the standard <assert.h> is included afterwards.
-    #if !defined(_CRTBLD) && !wxCHECK_VISUALC_VERSION(12)
-        // Needed when building with pure MS SDK
-        #define _CRTBLD
-    #endif
-
     #include <crtdbg.h>
 
     #undef WXDEBUG_NEW
diff --git a/include/wx/msw/setup.h b/include/wx/msw/setup.h
index 81e409e428..4b132886b9 100644
--- a/include/wx/msw/setup.h
+++ b/include/wx/msw/setup.h
@@ -1629,14 +1629,12 @@
 
 // Enable support for Direct2D-based implementation of wxGraphicsContext.
 //
-// Default is 1 for compilers which support it, i.e. VC10+ currently. If you
-// use an earlier MSVC version or another compiler and installed the necessary
-// SDK components manually, you need to change this setting.
+// Default is 1 for compilers which support it, i.e. MSVS currently. If you
+// use another compiler and installed the necessary SDK components manually,
+// you need to change this setting.
 //
-// Recommended setting: 1 for faster and better quality graphics under Windows
-// 7 and later systems (if wxUSE_GRAPHICS_GDIPLUS is also enabled, earlier
-// systems will fall back on using GDI+).
-#if defined(_MSC_VER) && _MSC_VER >= 1600
+// Recommended setting: 1 for faster and better quality graphics.
+#if defined(_MSC_VER)
     #define wxUSE_GRAPHICS_DIRECT2D wxUSE_GRAPHICS_CONTEXT
 #else
     #define wxUSE_GRAPHICS_DIRECT2D 0
@@ -1683,12 +1681,10 @@
 
 // Enable WinRT support
 //
-// Default is 1 for compilers which support it, i.e. VS2012+ currently. If you
-// use an earlier MSVC version or another compiler and installed the necessary
-// SDK components manually, you need to change this setting.
+// Default is 1 for compilers which support it, i.e. MSVS currently.
 //
 // Recommended setting: 1
-#if defined(_MSC_VER) && _MSC_VER >= 1700 && !defined(_USING_V110_SDK71_)
+#if defined(_MSC_VER)
     #define wxUSE_WINRT 1
 #else
     #define wxUSE_WINRT 0
diff --git a/include/wx/msw/setup_inc.h b/include/wx/msw/setup_inc.h
index bd420c2938..86c7c25c98 100644
--- a/include/wx/msw/setup_inc.h
+++ b/include/wx/msw/setup_inc.h
@@ -23,14 +23,12 @@
 
 // Enable support for Direct2D-based implementation of wxGraphicsContext.
 //
-// Default is 1 for compilers which support it, i.e. VC10+ currently. If you
-// use an earlier MSVC version or another compiler and installed the necessary
-// SDK components manually, you need to change this setting.
+// Default is 1 for compilers which support it, i.e. MSVS currently. If you
+// use another compiler and installed the necessary SDK components manually,
+// you need to change this setting.
 //
-// Recommended setting: 1 for faster and better quality graphics under Windows
-// 7 and later systems (if wxUSE_GRAPHICS_GDIPLUS is also enabled, earlier
-// systems will fall back on using GDI+).
-#if defined(_MSC_VER) && _MSC_VER >= 1600
+// Recommended setting: 1 for faster and better quality graphics.
+#if defined(_MSC_VER)
     #define wxUSE_GRAPHICS_DIRECT2D wxUSE_GRAPHICS_CONTEXT
 #else
     #define wxUSE_GRAPHICS_DIRECT2D 0
@@ -77,12 +75,10 @@
 
 // Enable WinRT support
 //
-// Default is 1 for compilers which support it, i.e. VS2012+ currently. If you
-// use an earlier MSVC version or another compiler and installed the necessary
-// SDK components manually, you need to change this setting.
+// Default is 1 for compilers which support it, i.e. MSVS currently.
 //
 // Recommended setting: 1
-#if defined(_MSC_VER) && _MSC_VER >= 1700 && !defined(_USING_V110_SDK71_)
+#if defined(_MSC_VER)
     #define wxUSE_WINRT 1
 #else
     #define wxUSE_WINRT 0
diff --git a/include/wx/propgrid/property.h b/include/wx/propgrid/property.h
index 50ebdb8c49..e995189de8 100644
--- a/include/wx/propgrid/property.h
+++ b/include/wx/propgrid/property.h
@@ -462,7 +462,7 @@ wxPG_PROP_CLASS_SPECIFIC_3          = 0x00400000
 #define wxPG_DEPRECATED_MACRO_VALUE(value, msg) value
 #endif // clang || GCC
 
-#if wxCHECK_VISUALC_VERSION(10) && !defined(WXBUILDING)
+#if defined(__VISUALC__) && !defined(WXBUILDING)
 #define wxPG_MUST_DEPRECATE_MACRO_NAME
 #endif
 
diff --git a/include/wx/stc/stc.h b/include/wx/stc/stc.h
index 37af238994..c78e8ce0bc 100644
--- a/include/wx/stc/stc.h
+++ b/include/wx/stc/stc.h
@@ -2479,7 +2479,7 @@ class WXDLLIMPEXP_FWD_CORE wxScrollBar;
 
 // The wxSTC_INDIC{0,1,2,S}_MASK values are no longer used in Scintilla
 
-#if wxCHECK_VISUALC_VERSION(10)
+#if defined(__VISUALC__)
     #pragma deprecated(wxSTC_INDIC0_MASK, wxSTC_INDIC1_MASK, \
                        wxSTC_INDIC2_MASK, wxSTC_INDICS_MASK)
 #endif
@@ -2496,7 +2496,7 @@ class WXDLLIMPEXP_FWD_CORE wxScrollBar;
 
 // The following entries have non-conformant prefixes.
 
-#if wxCHECK_VISUALC_VERSION(10)
+#if defined(__VISUALC__)
     #pragma deprecated(wxSTC_SCMOD_NORM, wxSTC_SCMOD_SHIFT, wxSTC_SCMOD_CTRL, \
                        wxSTC_SCMOD_ALT, wxSTC_SCMOD_SUPER, wxSTC_SCMOD_META, \
                        wxSTC_SCVS_NONE, wxSTC_SCVS_RECTANGULARSELECTION, \
diff --git a/include/wx/typeinfo.h b/include/wx/typeinfo.h
index c20106df30..015da80a7a 100644
--- a/include/wx/typeinfo.h
+++ b/include/wx/typeinfo.h
@@ -31,7 +31,7 @@
 // RTTI well enough, so we can use it and work around harmless memory
 // leaks reported by the static run-time libraries.
 //
-#if wxCHECK_VISUALC_VERSION(9)
+#ifdef __VISUALC__
     #define wxTRUST_CPP_RTTI    1
 #else
     #define wxTRUST_CPP_RTTI    0
diff --git a/include/wx/univ/setup.h b/include/wx/univ/setup.h
index 7fd17c8b93..babf336bb9 100644
--- a/include/wx/univ/setup.h
+++ b/include/wx/univ/setup.h
@@ -1628,14 +1628,12 @@
 
 // Enable support for Direct2D-based implementation of wxGraphicsContext.
 //
-// Default is 1 for compilers which support it, i.e. VC10+ currently. If you
-// use an earlier MSVC version or another compiler and installed the necessary
-// SDK components manually, you need to change this setting.
+// Default is 1 for compilers which support it, i.e. MSVS currently. If you
+// use another compiler and installed the necessary SDK components manually,
+// you need to change this setting.
 //
-// Recommended setting: 1 for faster and better quality graphics under Windows
-// 7 and later systems (if wxUSE_GRAPHICS_GDIPLUS is also enabled, earlier
-// systems will fall back on using GDI+).
-#if defined(_MSC_VER) && _MSC_VER >= 1600
+// Recommended setting: 1 for faster and better quality graphics.
+#if defined(_MSC_VER)
     #define wxUSE_GRAPHICS_DIRECT2D wxUSE_GRAPHICS_CONTEXT
 #else
     #define wxUSE_GRAPHICS_DIRECT2D 0
@@ -1682,12 +1680,10 @@
 
 // Enable WinRT support
 //
-// Default is 1 for compilers which support it, i.e. VS2012+ currently. If you
-// use an earlier MSVC version or another compiler and installed the necessary
-// SDK components manually, you need to change this setting.
+// Default is 1 for compilers which support it, i.e. MSVS currently.
 //
 // Recommended setting: 1
-#if defined(_MSC_VER) && _MSC_VER >= 1700 && !defined(_USING_V110_SDK71_)
+#if defined(_MSC_VER)
     #define wxUSE_WINRT 1
 #else
     #define wxUSE_WINRT 0
diff --git a/include/wx/wxcrtbase.h b/include/wx/wxcrtbase.h
index 4a3c1156ae..23c89f1e69 100644
--- a/include/wx/wxcrtbase.h
+++ b/include/wx/wxcrtbase.h
@@ -126,7 +126,7 @@
 
 /* Almost all compilers have strdup(), but VC++ and MinGW call it _strdup().
    And we need to declare it manually for MinGW in strict ANSI mode. */
-#if (defined(__VISUALC__) && __VISUALC__ >= 1400)
+#if defined(__VISUALC__)
     #define wxCRT_StrdupA _strdup
 #elif defined(__MINGW32__)
     wxDECL_FOR_STRICT_MINGW32(char*, _strdup, (const char *))
@@ -202,9 +202,9 @@ extern unsigned long android_wcstoul(const wchar_t *nptr, wchar_t **endptr, int
 #endif
 
 /*
-    Only VC8 and later provide strnlen() and wcsnlen() functions under Windows.
+    Only MSVC provides strnlen() and wcsnlen() functions under Windows.
  */
-#if wxCHECK_VISUALC_VERSION(8)
+#ifdef __VISUALC__
     #ifndef HAVE_STRNLEN
         #define HAVE_STRNLEN
     #endif
diff --git a/include/wx/xlocale.h b/include/wx/xlocale.h
index c433d25d05..317f4b9ccf 100644
--- a/include/wx/xlocale.h
+++ b/include/wx/xlocale.h
@@ -36,7 +36,7 @@
 // The platform-specific locale type
 // If wxXLocale_t is not defined, then only "C" locale support is provided
 #ifdef wxHAS_XLOCALE_SUPPORT
-    #if wxCHECK_VISUALC_VERSION(8)
+    #if defined(__VISUALC__)
         typedef _locale_t wxXLocale_t;
         #define wxXLOCALE_IDENT(name) _ ## name
     #elif defined(HAVE_LOCALE_T)
diff --git a/setup.h.in b/setup.h.in
index 091ecf8b79..2e4c01e150 100644
--- a/setup.h.in
+++ b/setup.h.in
@@ -669,7 +669,7 @@
 
 #define wxUSE_GRAPHICS_GDIPLUS wxUSE_GRAPHICS_CONTEXT
 
-#if defined(_MSC_VER) && _MSC_VER >= 1600
+#if defined(_MSC_VER)
     #define wxUSE_GRAPHICS_DIRECT2D wxUSE_GRAPHICS_CONTEXT
 #else
     #define wxUSE_GRAPHICS_DIRECT2D 0
@@ -684,7 +684,7 @@
 
 #define wxUSE_ACTIVEX 0
 
-#if defined(_MSC_VER) && _MSC_VER >= 1700 && !defined(_USING_V110_SDK71_)
+#if defined(_MSC_VER)
     #define wxUSE_WINRT 0
 #else
     #define wxUSE_WINRT 0
diff --git a/src/common/time.cpp b/src/common/time.cpp
index 3a99a26982..478bcf2c8e 100644
--- a/src/common/time.cpp
+++ b/src/common/time.cpp
@@ -157,16 +157,9 @@ int wxGetTimeZone()
     static bool s_tzSet = (_tzset(), true);
     wxUnusedVar(s_tzSet);
 
-    // Starting with VC++ 8 timezone variable is deprecated and is not even
-    // available in some standard library version so use the new function for
-    // accessing it instead.
-    #if wxCHECK_VISUALC_VERSION(8)
-        long t;
-        _get_timezone(&t);
-        return t;
-    #else // VC++ < 8
-        return timezone;
-    #endif
+    long t;
+    _get_timezone(&t);
+    return t;
 #else // Use some kind of time zone variable.
     // In any case we must initialize the time zone before using it.
     static bool s_tzSet = (tzset(), true);
diff --git a/src/common/xlocale.cpp b/src/common/xlocale.cpp
index d164bbf6fa..81c1a56cbd 100644
--- a/src/common/xlocale.cpp
+++ b/src/common/xlocale.cpp
@@ -98,7 +98,7 @@ wxXLocale::wxXLocale(wxLanguage lang)
 }
 #endif // wxUSE_INTL
 
-#if wxCHECK_VISUALC_VERSION(8)
+#if defined(__VISUALC__)
 
 // ----------------------------------------------------------------------------
 // implementation using MSVC locale API
diff --git a/src/generic/bmpsvg.cpp b/src/generic/bmpsvg.cpp
index 738bac2f86..1741d0c9ee 100644
--- a/src/generic/bmpsvg.cpp
+++ b/src/generic/bmpsvg.cpp
@@ -49,12 +49,6 @@
     #pragma warning(push)
     #pragma warning(disable:4456)
     #pragma warning(disable:4702)
-
-    // Also make nanosvg.h compile with older MSVC versions which didn't have
-    // strtoll().
-    #if _MSC_VER < 1800
-        #define strtoll _strtoi64
-    #endif
 #endif
 
 #if !wxUSE_NANOSVG_EXTERNAL || defined(wxUSE_NANOSVG_EXTERNAL_ENABLE_IMPL)
diff --git a/src/msw/graphicsd2d.cpp b/src/msw/graphicsd2d.cpp
index ef79ce4c00..c4a07d2bda 100644
--- a/src/msw/graphicsd2d.cpp
+++ b/src/msw/graphicsd2d.cpp
@@ -565,7 +565,7 @@ ID2D1Factory* wxD2D1Factory()
         // https://msdn.microsoft.com/en-us/library/windows/desktop/ee794287(v=vs.85).aspx
         // the Direct2D Debug Layer is only available starting with Windows 8
         // and Visual Studio 2012.
-#if defined(__WXDEBUG__) && defined(__VISUALC__) && wxCHECK_VISUALC_VERSION(11)
+#if defined(__WXDEBUG__) && defined(__VISUALC__)
         if ( wxTheAssertHandler && wxGetWinVersion() >= wxWinVersion_8 )
         {
             factoryOptions.debugLevel = D2D1_DEBUG_LEVEL_WARNING;
diff --git a/src/stc/stc.h.in b/src/stc/stc.h.in
index 0dc8e32493..3782673292 100644
--- a/src/stc/stc.h.in
+++ b/src/stc/stc.h.in
@@ -76,7 +76,7 @@ class WXDLLIMPEXP_FWD_CORE wxScrollBar;
 
 // The wxSTC_INDIC{0,1,2,S}_MASK values are no longer used in Scintilla
 
-#if wxCHECK_VISUALC_VERSION(10)
+#if defined(__VISUALC__)
     #pragma deprecated(wxSTC_INDIC0_MASK, wxSTC_INDIC1_MASK, \
                        wxSTC_INDIC2_MASK, wxSTC_INDICS_MASK)
 #endif
@@ -93,7 +93,7 @@ class WXDLLIMPEXP_FWD_CORE wxScrollBar;
 
 // The following entries have non-conformant prefixes.
 
-#if wxCHECK_VISUALC_VERSION(10)
+#if defined(__VISUALC__)
     #pragma deprecated(wxSTC_SCMOD_NORM, wxSTC_SCMOD_SHIFT, wxSTC_SCMOD_CTRL, \
                        wxSTC_SCMOD_ALT, wxSTC_SCMOD_SUPER, wxSTC_SCMOD_META, \
                        wxSTC_SCVS_NONE, wxSTC_SCVS_RECTANGULARSELECTION, \
diff --git a/tests/archive/archivetest.cpp b/tests/archive/archivetest.cpp
index 165afba9bf..d788c8febd 100644
--- a/tests/archive/archivetest.cpp
+++ b/tests/archive/archivetest.cpp
@@ -1034,11 +1034,6 @@ void ArchiveTestCase<ClassFactoryT>::TestSmartIterator(wxInputStream& in)
 template <class ClassFactoryT>
 void ArchiveTestCase<ClassFactoryT>::TestSmartPairIterator(wxInputStream& in)
 {
-#if defined _MSC_VER && defined _MSC_VER < 1200
-    // With VC++ 5.0 the '=' operator of std::pair breaks when the second
-    // type is Ptr<EntryT>, so this iterator can't be made to work.
-    (void)in;
-#else
     typedef std::map<wxString, Ptr<EntryT> > ArchiveCatalog;
     typedef typename ArchiveCatalog::iterator CatalogIter;
     typedef wxArchiveIterator<InputStreamT,
@@ -1052,7 +1047,6 @@ void ArchiveTestCase<ClassFactoryT>::TestSmartPairIterator(wxInputStream& in)
 
     for (CatalogIter it = cat.begin(); it != cat.end(); ++it)
         CPPUNIT_ASSERT(m_testEntries.count(it->second->GetName(wxPATH_UNIX)));
-#endif
 }
 
 // try reading two entries at the same time
diff --git a/tests/strings/vararg.cpp b/tests/strings/vararg.cpp
index 3b8a7ef6b8..b29395678a 100644
--- a/tests/strings/vararg.cpp
+++ b/tests/strings/vararg.cpp
@@ -211,7 +211,7 @@ TEST_CASE("ArgsValidation", "[wxString][vararg][error]")
     // default starting from VC8 and somehow even calling
     // _set_printf_count_output() doesn't help here, so don't use "%n" at all
     // with it.
-#if wxCHECK_VISUALC_VERSION(8)
+#if defined(__VISUALC__)
     #define wxNO_PRINTF_PERCENT_N
 #endif // VC8+
 
diff --git a/tests/testprec.h b/tests/testprec.h
index e26630271e..d546f987f7 100644
--- a/tests/testprec.h
+++ b/tests/testprec.h
@@ -28,7 +28,7 @@
     #define wxHAVE_U_ESCAPE
 
     // and disable warning that using them results in with MSVC 8+
-    #if wxCHECK_VISUALC_VERSION(8)
+    #if defined(__VISUALC__)
         // universal-character-name encountered in source
         #pragma warning(disable:4428)
     #endif
@@ -48,8 +48,7 @@
         (__MINGW64_VERSION_MAJOR == 5 && __MINGW64_VERSION_MINOR == 0 && __MINGW64_VERSION_BUGFIX >= 4)))
 #define wxMINGW_WITH_FIXED_MANTISSA
 #endif
-#if (defined(__VISUALC__) && !wxCHECK_VISUALC_VERSION(14)) || \
-        (defined(__MINGW32__) && !defined(wxMINGW_WITH_FIXED_MANTISSA) && \
+#if (defined(__MINGW32__) && !defined(wxMINGW_WITH_FIXED_MANTISSA) && \
         (!defined(__USE_MINGW_ANSI_STDIO) || !__USE_MINGW_ANSI_STDIO))
     #define wxDEFAULT_MANTISSA_SIZE_3
 #endif