MsiUseFeature utility extended with installed language check

MsiUseFeature/Main.cpp

@@ -52,6 +52,26 @@ static int MsiUseFeature()
         return 2;
     }
 
+    if (nArgs > 2) {
+        reg_key key;
+        if (!key.open(HKEY_LOCAL_MACHINE, _T("SOFTWARE\\") _T(VENDOR_NAME_STR) _T("\\") _T(PRODUCT_NAME_STR), 0, KEY_READ)) {
+            OutputDebugStr(_T("Product registry key cannot be opened (error %u).\n"), GetLastError());
+            return 3;
+        }
+
+        wstring lang;
+        LSTATUS s = RegQueryStringValue(key, _T("Language"), lang);
+        if (s != ERROR_SUCCESS) {
+            OutputDebugStr(_T("Error reading registry value (error %u).\n"), s);
+            return 3;
+        }
+
+        if (_wcsicmp(pwcArglist[2], lang.c_str()) != 0) {
+            OutputDebugStr(_T("Different language (%ls, %ls).\n"), pwcArglist[2], lang.c_str());
+            return 3;
+        }
+    }
+
     return 0;
 }
 

MsiUseFeature/MsiUseFeature.vcxproj

@@ -100,6 +100,11 @@
   <ItemGroup>
     <ResourceCompile Include="MsiUseFeature.rc" />
   </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\lib\WinStd\build\WinStd.vcxproj">
+      <Project>{47399d91-7eb9-41de-b521-514ba5db0c43}</Project>
+    </ProjectReference>
+  </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>

MsiUseFeature/README.md

@@ -3,15 +3,17 @@ Checks the installation state of the given feature of G
 
 ##Usage
 ```
-MsiUseFeature <feature name>
+MsiUseFeature <feature name> [language]
 ```
 
 - `feature name` - The name of the feature to check (i.e. "featEAPTTLS"; see Feature table of product MSI file)
+- `language`     - The user preferred language of the product
 
 Note: The MSI product code changes on every release. Therefore, `MsiUseFeature` utility with identical version should be used.
 
 Return codes:
 - -1 = Invalid parameters
 - 0  = Success
-- 1  = The product is not installed or feature state is unknown
+- 1  = The product is not installed, or feature state is unknown
 - 2  = The feature is not installed locally
+- 3  = The installed user preferred language is different

lib/WinStd

@@ -1 +1 @@
-Subproject commit 3948924124385430fd86e5c986d2f2c7c20f0c86
+Subproject commit 983bcbf9a2b0d9429b32aabf09efcbef9b73eef2