Add a micro version parameter to wxGetOsVersion

In addition to getting a major and minor OS version allow a micro
version to be retrieved. In case of running on e.g. OS X 10.10.3 this
allows the "3" to be retrieved again.

include/wx/utils.h

@@ -141,7 +141,8 @@ WXDLLIMPEXP_BASE wxString wxGetOsDescription();
 
 // Get OS version
 WXDLLIMPEXP_BASE wxOperatingSystemId wxGetOsVersion(int *verMaj = NULL,
-                                                    int *verMin = NULL);
+                                                    int *verMin = NULL,
+                                                    int *verMicro = NULL);
 
 // Check is OS version is at least the specified major and minor version
 WXDLLIMPEXP_BASE bool wxCheckOsVersion(int majorVsn, int minorVsn = 0);

interface/wx/utils.h

@@ -842,16 +842,22 @@ wxString wxGetOsDescription();
 /**
     Gets the version and the operating system ID for currently running OS. 
     The returned wxOperatingSystemId value can be used for a basic categorization
-    of the OS family; the major and minor version numbers allows to detect a specific
+    of the OS family; the major, minor, and micro version numbers allows to
-    system.
+    detect a specific system.
+
+    If on Unix-like systems the version can't be detected all three version
+    numbers will have a value of -1.
+
+    On systems where only the micro version can't be detected or doesn't make
+    sense such as Windows, it will have a value of 0.
 
     For Unix-like systems (@c wxOS_UNIX) the major and minor version integers will 
     contain the kernel major and minor version numbers (as returned by the
     'uname -r' command); e.g. "4" and "1" if the machine is using kernel 4.1.4.
 
     For OS X systems (@c wxOS_MAC) the major and minor version integers are the
-    natural version numbers associated with the OS; e.g. "10" and "11" if the machine
+    natural version numbers associated with the OS; e.g. "10", "11" and "2" if
-    is using OS X El Capitan.
+    the machine is using OS X El Capitan 10.11.2.
     
     For Windows-like systems (@c wxOS_WINDOWS) the major and minor version integers will 
     contain the following values:
@@ -878,7 +884,7 @@ wxString wxGetOsDescription();
 
     @header{wx/utils.h}
 */
-wxOperatingSystemId wxGetOsVersion(int* major = NULL, int* minor = NULL);
+wxOperatingSystemId wxGetOsVersion(int* major = NULL, int* minor = NULL, int* micro = NULL);
 
 /**
     Returns @true if the version of the operating system on which the program

src/msw/utils.cpp

@@ -1235,7 +1235,7 @@ bool wxIsPlatform64Bit()
 #endif // Win64/Win32
 }
 
-wxOperatingSystemId wxGetOsVersion(int *verMaj, int *verMin)
+wxOperatingSystemId wxGetOsVersion(int *verMaj, int *verMin, int *verMicro)
 {
     static struct
     {
@@ -1273,6 +1273,8 @@ wxOperatingSystemId wxGetOsVersion(int *verMaj, int *verMin)
         *verMaj = s_version.verMaj;
     if ( verMin )
         *verMin = s_version.verMin;
+    if ( verMicro )
+        *verMicro = 0;
 
     return s_version.os;
 }

src/osx/cocoa/utils_base.mm

@@ -28,7 +28,7 @@
 #endif
 
 // our OS version is the same in non GUI and GUI cases
-wxOperatingSystemId wxGetOsVersion(int *verMaj, int *verMin)
+wxOperatingSystemId wxGetOsVersion(int *verMaj, int *verMin, int *verMicro)
 {
 #ifdef wxHAS_NSPROCESSINFO
     if ([NSProcessInfo instancesRespondToSelector:@selector(operatingSystemVersion)])
@@ -40,6 +40,9 @@ wxOperatingSystemId wxGetOsVersion(int *verMaj, int *verMin)
 
         if ( verMin != NULL )
             *verMin = osVer.minorVersion;
+
+        if ( verMicro != NULL )
+            *verMicro = osVer.patchVersion;
     }
     else
 #endif
@@ -47,13 +50,15 @@ wxOperatingSystemId wxGetOsVersion(int *verMaj, int *verMin)
         // On OS X versions prior to 10.10 NSProcessInfo does not provide the OS version
         // Deprecated Gestalt calls are required instead
 wxGCC_WARNING_SUPPRESS(deprecated-declarations)
-        SInt32 maj, min;
+        SInt32 maj, min, micro;
 #ifdef __WXOSX_IPHONE__
         maj = 7;
         min = 0;
+        micro = 0;
 #else
         Gestalt(gestaltSystemVersionMajor, &maj);
         Gestalt(gestaltSystemVersionMinor, &min);
+        Gestalt(gestaltSystemVersionBugFix, &micro);
 #endif
 wxGCC_WARNING_RESTORE()
 
@@ -62,6 +67,9 @@ wxGCC_WARNING_RESTORE()
 
         if ( verMin != NULL )
             *verMin = min;
+
+        if ( verMicro != NULL )
+            *verMicro = micro;
     }
 
     return wxOS_MAC_OSX_DARWIN;

src/unix/utilsunx.cpp

@@ -1114,7 +1114,7 @@ wxLinuxDistributionInfo wxGetLinuxDistributionInfo()
 // these functions are in src/osx/utilsexc_base.cpp for wxMac
 #ifndef __DARWIN__
 
-wxOperatingSystemId wxGetOsVersion(int *verMaj, int *verMin)
+wxOperatingSystemId wxGetOsVersion(int *verMaj, int *verMin, int *verMicro)
 {
     // get OS version
     int major, minor;
@@ -1131,6 +1131,8 @@ wxOperatingSystemId wxGetOsVersion(int *verMaj, int *verMin)
         *verMaj = major;
     if ( verMin )
         *verMin = minor;
+    if ( verMicro )
+        *verMicro = (major == -1) ? -1 : 0;
 
     // try to understand which OS are we running
     wxString kernel = wxGetCommandOutput(wxT("uname -s"));