diff --git a/common/engine/keyboardprocessor/include/keyboardprocessor.h.in b/common/engine/keyboardprocessor/include/keyboardprocessor.h.in
index 6e0a38b527..52037f86eb 100644
--- a/common/engine/keyboardprocessor/include/keyboardprocessor.h.in
+++ b/common/engine/keyboardprocessor/include/keyboardprocessor.h.in
@@ -90,7 +90,7 @@ typedef uint32_t    km_kbp_status;      // Status return code.
 typedef struct km_kbp_context     km_kbp_context;
 typedef struct km_kbp_keyboard    km_kbp_keyboard;
 typedef struct km_kbp_state       km_kbp_state;
-typedef struct km_kbp_options_set  km_kbp_options_set;
+typedef struct km_kbp_options_set km_kbp_options_set;
 
 // Forward declarations
 //
@@ -148,7 +148,7 @@ enum km_kbp_context_type {
 
 typedef struct {
   uint8_t   type;
-  uint8_t   reserved[3];
+  uint8_t   _reserved[3];
   union {
     km_kbp_usv  character;
     uint32_t    marker;
@@ -332,7 +332,7 @@ services framework to acheive the expected effect.
 */
 typedef struct {
   uint8_t   type;
-  uint8_t   __reserved[3];
+  uint8_t   _reserved[3];
   union {
     uintptr_t           marker;     // MARKER type
     km_kbp_option const * option;    // OPT types
diff --git a/common/engine/keyboardprocessor/meson.build b/common/engine/keyboardprocessor/meson.build
index 0cccf42be6..0b816683e7 100644
--- a/common/engine/keyboardprocessor/meson.build
+++ b/common/engine/keyboardprocessor/meson.build
@@ -13,6 +13,10 @@ project('keyboardprocessor', 'cpp', 'c',
 
 compiler = meson.get_compiler('cpp')
 
+if compiler.get_id() == 'msvc'
+  add_global_arguments('/source-charset:utf-8', language: ['c', 'cpp'])
+endif
+
 py = import('python3')
 python = py.find_python()
 
diff --git a/common/engine/keyboardprocessor/src/keyboard.hpp b/common/engine/keyboardprocessor/src/keyboard.hpp
index c936d0ec2a..844108504e 100644
--- a/common/engine/keyboardprocessor/src/keyboard.hpp
+++ b/common/engine/keyboardprocessor/src/keyboard.hpp
@@ -14,7 +14,7 @@
 #include <keyboardprocessor.h>
 
 namespace std {
-  using namespace std::experimental;
+  namespace filesystem = std::experimental::filesystem;
 }
 
 // Forward declartions
@@ -28,7 +28,7 @@ namespace kbp
   {
     std::string const _keyboard_id;
     std::string const _version_string;
-    std::filesystem::path const _folder_path;
+    std::string const _folder_path;
 
   public:
     keyboard(std::filesystem::path const &);
@@ -36,13 +36,14 @@ namespace kbp
 
   inline
   keyboard::keyboard(std::filesystem::path const & path)
-  : _keyboard_id(path.stem()),
+  : _keyboard_id(path.stem().string()),
     _version_string("3.145"),
-    _folder_path(path.parent_path())
+    _folder_path(path.parent_path().string())
   {
     version_string = _version_string.c_str();
     id = _keyboard_id.c_str();
     folder_path = _folder_path.c_str();
+    default_options = nullptr;
   }
 
 }
diff --git a/common/engine/keyboardprocessor/src/keyboardprocessor.cpp b/common/engine/keyboardprocessor/src/keyboardprocessor.cpp
index 6bb167f2a0..07dd21ec75 100644
--- a/common/engine/keyboardprocessor/src/keyboardprocessor.cpp
+++ b/common/engine/keyboardprocessor/src/keyboardprocessor.cpp
@@ -86,6 +86,7 @@ km_kbp_status km_kbp_process_event(km_kbp_state *state,
         break;
 
       default:
+      {
         auto shift_state = modifier_state & KM_KBP_MODIFIER_SHIFT;
         // Only process further one of the shift states has something to output.
         if (table[0][vk][0] || table[1][vk][0])
@@ -96,7 +97,7 @@ km_kbp_status km_kbp_process_event(km_kbp_state *state,
           {
             km_kbp_usv usv = *c;
             state->context().emplace_back(km_kbp_context_item {KM_KBP_CT_CHAR,{0,},{usv}});
-            state->actions.emplace_back(km_kbp_action_item {KM_KBP_IT_CHAR, {0,}, {.character = usv}});
+            state->actions.emplace_back(km_kbp_action_item {KM_KBP_IT_CHAR, {0,}, {usv}});
           }
           state->actions.emplace_back(km_kbp_action_item {KM_KBP_IT_END, {0,}, {0}});
 
@@ -107,6 +108,7 @@ km_kbp_status km_kbp_process_event(km_kbp_state *state,
         state->actions.emplace_back(km_kbp_action_item {KM_KBP_IT_ALERT, {0,}, {0}});
         state->actions.emplace_back(km_kbp_action_item {KM_KBP_IT_END, {0,}, {0}});
         break;
+      }
     }
   }
   catch (std::bad_alloc)
diff --git a/common/engine/keyboardprocessor/src/km_kbp_keyboard_api.cpp b/common/engine/keyboardprocessor/src/km_kbp_keyboard_api.cpp
index c98093a6ae..bda8464e16 100644
--- a/common/engine/keyboardprocessor/src/km_kbp_keyboard_api.cpp
+++ b/common/engine/keyboardprocessor/src/km_kbp_keyboard_api.cpp
@@ -36,7 +36,7 @@ km_kbp_status km_kbp_keyboard_load(char const *kb_path,
   // if (stat.type() != std::filesystem::file_type::regular)
   //   return KM_KBP_STATUS_INVALID_ARGUMENT;
 
-  *keyboard = static_cast<km_kbp_keyboard *>(new km::kbp::keyboard("/dev/null/unk_dummy.kmx"));
+  *keyboard = static_cast<km_kbp_keyboard *>(new km::kbp::keyboard(kb_path));
   return KM_KBP_STATUS_OK;
 }
 
diff --git a/common/engine/keyboardprocessor/src/km_kbp_state_api.cpp b/common/engine/keyboardprocessor/src/km_kbp_state_api.cpp
index d8ea53e94f..ea7cb3268a 100644
--- a/common/engine/keyboardprocessor/src/km_kbp_state_api.cpp
+++ b/common/engine/keyboardprocessor/src/km_kbp_state_api.cpp
@@ -12,6 +12,7 @@
 #include <algorithm>
 #include <iterator>
 #include <list>
+#include <sstream>
 #include <utility>
 #include <vector>
 
diff --git a/common/engine/keyboardprocessor/src/meson.build b/common/engine/keyboardprocessor/src/meson.build
index 27e8f9caf4..471ce5a298 100644
--- a/common/engine/keyboardprocessor/src/meson.build
+++ b/common/engine/keyboardprocessor/src/meson.build
@@ -21,6 +21,7 @@ if compiler.get_id() == 'gcc' or compiler.get_id() == 'clang'
     '-fvisibility=hidden',
     '-fvisibility-inlines-hidden'
   ]
+  links = ['-lstdc++fs']
 
   if compiler.get_id() == 'clang'
     warns += [
@@ -38,11 +39,12 @@ endif
 if compiler.get_id() == 'msvc'
   warns = []
   flags = []
-  defns = [
+  defns += [
     '-D_SCL_SECURE_NO_WARNINGS',
     '-D_CRT_SECURE_NO_WARNINGS',
     '-DUNICODE'
   ]
+  links = []
 endif
 
 pkg = import('pkgconfig')
@@ -59,7 +61,7 @@ lib = library('kmnkbp0',
     'km_kbp_state_api.cpp',
     'json.cpp',
     cpp_args: defns + warns + flags,
-    link_args: ['-lstdc++fs'],
+    link_args: links,
     version: meson.project_version(),
     include_directories: inc,
     install: true)
diff --git a/common/engine/keyboardprocessor/tests/unit/json/meson.build b/common/engine/keyboardprocessor/tests/unit/json/meson.build
index 24adc83903..6b1f31633c 100644
--- a/common/engine/keyboardprocessor/tests/unit/json/meson.build
+++ b/common/engine/keyboardprocessor/tests/unit/json/meson.build
@@ -5,7 +5,7 @@
 #
 
 e = executable('jsontest', 'jsontest.cpp',
-    include_directories: [inc, libsrc],
+    include_directories: [libsrc],
     objects: lib.extract_objects('json.cpp'))
 test('jsontest', e, args: 'jsontest.json')
 test('jsontestOutput', python, is_parallel: false, args:
diff --git a/common/engine/keyboardprocessor/tests/unit/kmnkbd/context_api.cpp b/common/engine/keyboardprocessor/tests/unit/kmnkbd/context_api.cpp
index ec747a5808..cb12c568cf 100644
--- a/common/engine/keyboardprocessor/tests/unit/kmnkbd/context_api.cpp
+++ b/common/engine/keyboardprocessor/tests/unit/kmnkbd/context_api.cpp
@@ -30,8 +30,8 @@ namespace
   auto const bmp_ctxt_size = count_codepoints(initial_bmp_context),
              smp_ctxt_size = count_codepoints(initial_smp_context);
   km_kbp_context_item test_marker_ctxt[2] = {
-    {KM_KBP_CT_MARKER, {0,}, 0xDEADBEEF},
-    {KM_KBP_CT_END, {0,}, 0}
+    {KM_KBP_CT_MARKER, {0,}, {0xDEADBEEF}},
+    {KM_KBP_CT_END, {0,}, {0}}
   };
 
 
@@ -40,7 +40,7 @@ namespace
 #define   try_status(expr) \
 {auto __s = (expr); if (__s != KM_KBP_STATUS_OK) return 100*__LINE__+__s;}
 
-int main(int argc, char * argv[])
+int main(int, char * [])
 {
   km_kbp_context_item *ctxt1, *ctxt2;
   // Test UTF16 to context_item conversion.
diff --git a/common/engine/keyboardprocessor/tests/unit/kmnkbd/keyboard_api.cpp b/common/engine/keyboardprocessor/tests/unit/kmnkbd/keyboard_api.cpp
new file mode 100644
index 0000000000..2ab38c8759
--- /dev/null
+++ b/common/engine/keyboardprocessor/tests/unit/kmnkbd/keyboard_api.cpp
@@ -0,0 +1,39 @@
+/*
+  Copyright:    © 2018 SIL International.
+  Description:  Tests for the Keyboard API family of functions.
+  Create Date:  30 Oct 2018
+  Authors:      Tim Eves (TSE)
+*/
+#include <string>
+
+#include <keyboardprocessor.h>
+#include <experimental/filesystem>
+
+namespace std {
+  namespace filesystem = std::experimental::filesystem;
+}
+
+
+//#include "keyboard.hpp"
+
+namespace
+{
+  std::filesystem::path const test_kb_path = "/a/dummy/keyboard.mock";
+}
+
+#define   try_status(expr) \
+{auto __s = (expr); if (__s != KM_KBP_STATUS_OK) return 100*__LINE__+__s;}
+
+int main(int, char *[])
+{
+  km_kbp_keyboard * test_kb = nullptr;
+
+  try_status(km_kbp_keyboard_load(test_kb_path.string().c_str(), &test_kb));
+  auto kb_attrs = km_kbp_keyboard_get_attrs(test_kb);
+  if (kb_attrs->folder_path != test_kb_path.parent_path().string())
+    return __LINE__;
+
+  km_kbp_keyboard_dispose(test_kb);
+
+  return 0;
+}
diff --git a/common/engine/keyboardprocessor/tests/unit/kmnkbd/meson.build b/common/engine/keyboardprocessor/tests/unit/kmnkbd/meson.build
index f69b6bb335..f3329ebe35 100644
--- a/common/engine/keyboardprocessor/tests/unit/kmnkbd/meson.build
+++ b/common/engine/keyboardprocessor/tests/unit/kmnkbd/meson.build
@@ -7,5 +7,10 @@
 
 ctxt = executable('context-api', 'context_api.cpp',
     include_directories: [inc, libsrc],
-    dependencies: [kmnkbp])
+    objects: lib.extract_objects('km_kbp_context_api.cpp', 'json.cpp'))
+keyb = executable('keyboard-api', 'keyboard_api.cpp',
+    include_directories: [inc, libsrc],
+    link_args: links,
+    objects: lib.extract_objects('km_kbp_keyboard_api.cpp', 'json.cpp', 'km_kbp_options_api.cpp'))
 test('context-api', ctxt)
+test('keyboard-api', keyb)
diff --git a/common/engine/keyboardprocessor/tests/unit/utftest/meson.build b/common/engine/keyboardprocessor/tests/unit/utftest/meson.build
index 8374075478..456b7a5391 100644
--- a/common/engine/keyboardprocessor/tests/unit/utftest/meson.build
+++ b/common/engine/keyboardprocessor/tests/unit/utftest/meson.build
@@ -4,5 +4,5 @@
 # Authors:      Tim Eves (TSE)
 #
 
-e = executable('utftest', 'utftest.cpp', include_directories: [inc, libsrc])
+e = executable('utftest', 'utftest.cpp', include_directories: [libsrc])
 test('utftest', e)