diff --git a/rostests/apitests/w32knapi/osver.c b/rostests/apitests/w32knapi/osver.c
new file mode 100644
index 00000000000..d9639b1f197
--- /dev/null
+++ b/rostests/apitests/w32knapi/osver.c
@@ -0,0 +1,49 @@
+#include "w32knapi.h"
+
+OSVERSIONINFOW g_OsVer;
+UINT g_OsIdx;
+
+ASPI gNOPARAM_ROUTINE_CREATEMENU = {-1,-1,0x00,-1,0x00};
+ASPI gNOPARAM_ROUTINE_CREATEMENUPOPUP = {-1,-1,0x01,-1,0x01};
+ASPI gNOPARAM_ROUTINE_LOADUSERAPIHOOK = {-1,-1,0x1d,-1,0x0e};
+ASPI gONEPARAM_ROUTINE_MAPDEKTOPOBJECT = {-1,-1,0x30,-1,0x31};
+ASPI gONEPARAM_ROUTINE_SWAPMOUSEBUTTON = {-1,-1,0x42,-1,0x44};
+
+ASPI gHWND_ROUTINE_DEREGISTERSHELLHOOKWINDOW = {-1,-1,0x45,-1,0x46};
+ASPI gHWND_ROUTINE_GETWNDCONTEXTHLPID = {-1,-1,0x47,-1,0x48};
+ASPI gHWNDPARAM_ROUTINE_SETWNDCONTEXTHLPID = {-1,-1,0x51,-1,0x52};
+
+BOOL InitOsVersion()
+{
+	g_OsVer.dwOSVersionInfoSize = sizeof(OSVERSIONINFOW);
+	GetVersionExW((LPOSVERSIONINFOW)&g_OsVer);
+	if (g_OsVer.dwMajorVersion == 4)
+	{
+		g_OsIdx = 0;
+		return TRUE;
+	}
+	else if (g_OsVer.dwMajorVersion == 5)
+	{
+		if (g_OsVer.dwMinorVersion == 0)
+		{
+			g_OsIdx = 1;
+			return TRUE;
+		}
+		else if (g_OsVer.dwMinorVersion == 1)
+		{
+			g_OsIdx = 2;
+			return TRUE;
+		}
+		else if (g_OsVer.dwMinorVersion == 2)
+		{
+			g_OsIdx = 3;
+			return TRUE;
+		}
+	}
+	else if (g_OsVer.dwMajorVersion == 6)
+	{
+		g_OsIdx = 4;
+		return TRUE;
+	}
+	return FALSE;
+}