diff --git a/c++/carla-backend/carla_backend.h b/c++/carla-backend/carla_backend.h
index 2c49d21..42f304b 100644
--- a/c++/carla-backend/carla_backend.h
+++ b/c++/carla-backend/carla_backend.h
@@ -287,23 +287,35 @@ enum OptionsType {
      */
     OPTION_PATH_BRIDGE_LV2_GTK2 = 21,
 
+    /*!
+     * Set path to the LV2 Gtk3 UI bridge executable.\n
+     * Default unset.
+     */
+    OPTION_PATH_BRIDGE_LV2_GTK3 = 22,
+
     /*!
      * Set path to the LV2 Qt4 UI bridge executable.\n
      * Default unset.
      */
-    OPTION_PATH_BRIDGE_LV2_QT4 = 22,
+    OPTION_PATH_BRIDGE_LV2_QT4 = 23,
 
     /*!
      * Set path to the LV2 X11 UI bridge executable.\n
      * Default unset.
      */
-    OPTION_PATH_BRIDGE_LV2_X11 = 23,
+    OPTION_PATH_BRIDGE_LV2_X11 = 24,
+
+    /*!
+     * Set path to the VST HWND UI bridge executable.\n
+     * Default unset.
+     */
+    OPTION_PATH_BRIDGE_VST_HWND = 25,
 
     /*!
      * Set path to the VST X11 UI bridge executable.\n
      * Default unset.
      */
-    OPTION_PATH_BRIDGE_VST_X11 = 24
+    OPTION_PATH_BRIDGE_VST_X11 = 26
 };
 
 /*!
diff --git a/c++/carla-backend/carla_shared.cpp b/c++/carla-backend/carla_shared.cpp
index 1972a93..1d89069 100644
--- a/c++/carla-backend/carla_shared.cpp
+++ b/c++/carla-backend/carla_shared.cpp
@@ -244,10 +244,14 @@ const char* OptionsType2str(const OptionsType type)
         return "OPTION_PATH_BRIDGE_WIN64";
     case OPTION_PATH_BRIDGE_LV2_GTK2:
         return "OPTION_PATH_BRIDGE_LV2_GTK2";
+    case OPTION_PATH_BRIDGE_LV2_GTK3:
+        return "OPTION_PATH_BRIDGE_LV2_GTK3";
     case OPTION_PATH_BRIDGE_LV2_QT4:
         return "OPTION_PATH_BRIDGE_LV2_QT4";
     case OPTION_PATH_BRIDGE_LV2_X11:
         return "OPTION_PATH_BRIDGE_LV2_X11";
+    case OPTION_PATH_BRIDGE_VST_HWND:
+        return "OPTION_PATH_BRIDGE_VST_HWND";
     case OPTION_PATH_BRIDGE_VST_X11:
         return "OPTION_PATH_BRIDGE_VST_X11";
     }
@@ -558,12 +562,18 @@ void setOption(const OptionsType option, const int value, const char* const valu
     case OPTION_PATH_BRIDGE_LV2_GTK2:
         carlaOptions.bridge_lv2gtk2 = strdup(valueStr);
         break;
+    case OPTION_PATH_BRIDGE_LV2_GTK3:
+        carlaOptions.bridge_lv2gtk3 = strdup(valueStr);
+        break;
     case OPTION_PATH_BRIDGE_LV2_QT4:
         carlaOptions.bridge_lv2qt4 = strdup(valueStr);
         break;
     case OPTION_PATH_BRIDGE_LV2_X11:
         carlaOptions.bridge_lv2x11 = strdup(valueStr);
         break;
+    case OPTION_PATH_BRIDGE_VST_HWND:
+        carlaOptions.bridge_vsthwnd = strdup(valueStr);
+        break;
     case OPTION_PATH_BRIDGE_VST_X11:
         carlaOptions.bridge_vstx11 = strdup(valueStr);
         break;
@@ -589,12 +599,18 @@ void resetOptions()
     if (carlaOptions.bridge_lv2gtk2)
         free((void*)carlaOptions.bridge_lv2gtk2);
 
+    if (carlaOptions.bridge_lv2gtk3)
+        free((void*)carlaOptions.bridge_lv2gtk3);
+
     if (carlaOptions.bridge_lv2qt4)
         free((void*)carlaOptions.bridge_lv2qt4);
 
     if (carlaOptions.bridge_lv2x11)
         free((void*)carlaOptions.bridge_lv2x11);
 
+    if (carlaOptions.bridge_vsthwnd)
+        free((void*)carlaOptions.bridge_vsthwnd);
+
     if (carlaOptions.bridge_vstx11)
         free((void*)carlaOptions.bridge_vstx11);
 
@@ -613,8 +629,10 @@ void resetOptions()
     carlaOptions.bridge_win32   = nullptr;
     carlaOptions.bridge_win64   = nullptr;
     carlaOptions.bridge_lv2gtk2 = nullptr;
+    carlaOptions.bridge_lv2gtk3 = nullptr;
     carlaOptions.bridge_lv2qt4  = nullptr;
     carlaOptions.bridge_lv2x11  = nullptr;
+    carlaOptions.bridge_vsthwnd = nullptr;
     carlaOptions.bridge_vstx11  = nullptr;
 }
 #endif // BUILD_BRIDGE
diff --git a/c++/carla-backend/carla_shared.h b/c++/carla-backend/carla_shared.h
index 48aa4bc..2b36a06 100644
--- a/c++/carla-backend/carla_shared.h
+++ b/c++/carla-backend/carla_shared.h
@@ -73,8 +73,10 @@ struct carla_options_t {
     const char* bridge_win32;
     const char* bridge_win64;
     const char* bridge_lv2gtk2;
+    const char* bridge_lv2gtk3;
     const char* bridge_lv2qt4;
     const char* bridge_lv2x11;
+    const char* bridge_vsthwnd;
     const char* bridge_vstx11;
 
     carla_options_t()
@@ -92,8 +94,10 @@ struct carla_options_t {
           bridge_win32(nullptr),
           bridge_win64(nullptr),
           bridge_lv2gtk2(nullptr),
+          bridge_lv2gtk3(nullptr),
           bridge_lv2qt4(nullptr),
           bridge_lv2x11(nullptr),
+          bridge_vsthwnd(nullptr),
           bridge_vstx11(nullptr) {}
 };
 extern carla_options_t carlaOptions;
diff --git a/c++/carla-bridge/Makefile b/c++/carla-bridge/Makefile
index 06965c5..76cdfc5 100644
--- a/c++/carla-bridge/Makefile
+++ b/c++/carla-bridge/Makefile
@@ -32,7 +32,7 @@ POSIX_LINK_FLAGS  = $(LINK_PLUGIN_FLAGS) $(shell pkg-config --libs QtGui) -ldl
 WIN_BUILD_FLAGS  = $(BUILD_PLUGIN_FLAGS) $(shell pkg-config --cflags QtGui)
 WIN_32BIT_FLAGS  = $(32BIT_FLAGS)
 WIN_64BIT_FLAGS  = $(64BIT_FLAGS)
-WIN_LINK_FLAGS   = $(LINK_PLUGIN_FLAGS) $(shell pkg-config --libs QtGui) -static
+WIN_LINK_FLAGS   = $(LINK_PLUGIN_FLAGS) $(shell pkg-config --libs QtGui) -static -mwindows
 
 WINE_BUILD_FLAGS = $(BUILD_PLUGIN_FLAGS) -DQTCREATOR_TEST # -fpermissive
 WINE_32BIT_FLAGS = $(32BIT_FLAGS) -L/usr/lib32/wine -L/usr/lib/i386-linux-gnu/wine
@@ -66,14 +66,27 @@ LINK_UI_VST_X11_FLAGS   = $(LINK_UI_FLAGS) $(shell pkg-config --libs QtGui)
 
 all: ui
 
-ui: ui_lv2-gtk2 ui_lv2-qt4 ui_lv2-x11 ui_vst-x11
+ui: ui_lv2-gtk2 ui_lv2-gtk3 ui_lv2-qt4 ui_lv2-x11 ui_vst-x11
+
+ifeq ($(shell pkg-config --exists gtk+-2.0 && echo true),true)
 ui_lv2-gtk2: carla-bridge-lv2-gtk2
+else
+ui_lv2-gtk2:
+endif
+
+ifeq ($(shell pkg-config --exists gtk+-3.0 && echo true),true)
 ui_lv2-gtk3: carla-bridge-lv2-gtk3
+else
+ui_lv2-gtk3:
+endif
+
 ui_lv2-qt4:  carla-bridge-lv2-qt4
 ui_lv2-x11:  carla-bridge-lv2-x11
 ui_vst-hwnd: carla-bridge-vst-hwnd.exe
 ui_vst-x11:  carla-bridge-vst-x11
 
+# --------------------------------------------------------------
+
 posix32: carla-bridge-posix32
 posix64: carla-bridge-posix64
 win32:   carla-bridge-win32.exe
diff --git a/c++/carla-bridge/carla_bridge.doxygen b/c++/carla-bridge/carla_bridge.doxygen
index cc606c7..c76d521 100644
--- a/c++/carla-bridge/carla_bridge.doxygen
+++ b/c++/carla-bridge/carla_bridge.doxygen
@@ -4,7 +4,7 @@
 # Project related configuration options
 #---------------------------------------------------------------------------
 DOXYFILE_ENCODING      = UTF-8
-PROJECT_NAME           = "Carla Bridge UI"
+PROJECT_NAME           = "Carla Bridge"
 PROJECT_NUMBER         =
 PROJECT_BRIEF          =
 PROJECT_LOGO           =
@@ -241,7 +241,7 @@ EXPAND_ONLY_PREDEF     = NO
 SEARCH_INCLUDES        = YES
 INCLUDE_PATH           =
 INCLUDE_FILE_PATTERNS  =
-PREDEFINED             = BUILD_BRIDGE BUILD_BRIDGE_UI BUILD_BRIDGE_LV2 BUILD_BRIDGE_VST BRIDGE_LV2_GTK2 BRIDGE_LV2_QT4 BRIDGE_LV2_X11 BRIDGE_VST_X11
+PREDEFINED             = BUILD_BRIDGE BUILD_BRIDGE_PLUGIN BUILD_BRIDGE_UI BRIDGE_LV2 BRIDGE_VST LV2_GTK2 BRIDGE_LV2_GTK3 BRIDGE_LV2_QT4 BRIDGE_LV2_X11 BRIDGE_VST_HWND BRIDGE_VST_X11
 EXPAND_AS_DEFINED      =
 SKIP_FUNCTION_MACROS   = YES
 #---------------------------------------------------------------------------
diff --git a/c++/carla-bridge/carla_bridge_client.h b/c++/carla-bridge/carla_bridge_client.h
index 6d34d19..f450078 100644
--- a/c++/carla-bridge/carla_bridge_client.h
+++ b/c++/carla-bridge/carla_bridge_client.h
@@ -22,9 +22,9 @@
 #include "carla_bridge_toolkit.h"
 
 #ifdef BUILD_BRIDGE_PLUGIN
-#include "carla_engine.h"
+#  include "carla_engine.h"
 #else
-#include "carla_lib_includes.h"
+#  include "carla_lib_includes.h"
 #endif
 
 #include <cmath>
diff --git a/c++/carla-bridge/carla_bridge_osc.cpp b/c++/carla-bridge/carla_bridge_osc.cpp
index c762c48..3ba18ec 100644
--- a/c++/carla-bridge/carla_bridge_osc.cpp
+++ b/c++/carla-bridge/carla_bridge_osc.cpp
@@ -151,6 +151,8 @@ int CarlaOsc::handleMessage(const char* const path, const int argc, const lo_arg
         return handleMsgMidiProgram(argc, argv, types);
     if (strcmp(method, "/midi") == 0)
         return handleMsgMidi(argc, argv, types);
+    if (strcmp(method, "/sample_rate") == 0)
+        return 0; // unused
     if (strcmp(method, "/show") == 0)
         return handleMsgShow();
     if (strcmp(method, "/hide") == 0)
@@ -295,6 +297,8 @@ int CarlaOsc::handleMsgMidi(CARLA_BRIDGE_OSC_HANDLE_ARGS)
 
 int CarlaOsc::handleMsgShow()
 {
+    qDebug("CarlaOsc::handleMsgShow()");
+
     if (! client)
         return 1;
 
@@ -305,6 +309,8 @@ int CarlaOsc::handleMsgShow()
 
 int CarlaOsc::handleMsgHide()
 {
+    qDebug("CarlaOsc::handleMsgHide()");
+
     if (! client)
         return 1;
 
@@ -315,6 +321,8 @@ int CarlaOsc::handleMsgHide()
 
 int CarlaOsc::handleMsgQuit()
 {
+    qDebug("CarlaOsc::handleMsgQuit()");
+
     if (! client)
         return 1;
 
diff --git a/c++/carla-discovery/Makefile b/c++/carla-discovery/Makefile
index c062c51..c971a03 100644
--- a/c++/carla-discovery/Makefile
+++ b/c++/carla-discovery/Makefile
@@ -43,7 +43,7 @@ POSIX_LINK_FLAGS  = $(LINK_FLAGS) -ldl
 WIN_BUILD_FLAGS   = $(BUILD_FLAGS)
 WIN_32BIT_FLAGS   = $(32BIT_FLAGS)
 WIN_64BIT_FLAGS   = $(64BIT_FLAGS)
-WIN_LINK_FLAGS    = $(LINK_FLAGS) -static
+WIN_LINK_FLAGS    = $(LINK_FLAGS) -static -mwindows
 
 WINE_BUILD_FLAGS  = $(BUILD_FLAGS) # -fpermissive
 WINE_32BIT_FLAGS  = $(32BIT_FLAGS) -L/usr/lib32/wine -L/usr/lib/i386-linux-gnu/wine
diff --git a/c++/carla-discovery/Makefile.dbg b/c++/carla-discovery/Makefile.dbg
index 5172ee0..2b064f1 100644
--- a/c++/carla-discovery/Makefile.dbg
+++ b/c++/carla-discovery/Makefile.dbg
@@ -35,31 +35,31 @@ LINK_FLAGS  += $(shell pkg-config --libs linuxsampler)
 endif
 endif
 
-UNIX_BUILD_FLAGS = $(BUILD_FLAGS)
-UNIX_32BIT_FLAGS = $(32BIT_FLAGS) -L/usr/lib32 -L/usr/lib/i386-linux-gnu
-UNIX_64BIT_FLAGS = $(64BIT_FLAGS) -L/usr/lib64 -L/usr/lib/x86_64-linux-gnu
-UNIX_LINK_FLAGS  = $(LINK_FLAGS) -ldl
+POSIX_BUILD_FLAGS = $(BUILD_FLAGS)
+POSIX_32BIT_FLAGS = $(32BIT_FLAGS) -L/usr/lib32 -L/usr/lib/i386-linux-gnu
+POSIX_64BIT_FLAGS = $(64BIT_FLAGS) -L/usr/lib64 -L/usr/lib/x86_64-linux-gnu
+POSIX_LINK_FLAGS  = $(LINK_FLAGS) -ldl
 
-WIN_BUILD_FLAGS  = $(BUILD_FLAGS)
-WIN_32BIT_FLAGS  = $(32BIT_FLAGS)
-WIN_64BIT_FLAGS  = $(64BIT_FLAGS)
-WIN_LINK_FLAGS   = $(LINK_FLAGS) -static
+WIN_BUILD_FLAGS   = $(BUILD_FLAGS)
+WIN_32BIT_FLAGS   = $(32BIT_FLAGS)
+WIN_64BIT_FLAGS   = $(64BIT_FLAGS)
+WIN_LINK_FLAGS    = $(LINK_FLAGS) -static -mwindows
 
-WINE_BUILD_FLAGS = $(BUILD_FLAGS) # -fpermissive
-WINE_32BIT_FLAGS = $(32BIT_FLAGS) -L/usr/lib32/wine -L/usr/lib/i386-linux-gnu/wine
-WINE_64BIT_FLAGS = $(64BIT_FLAGS) -L/usr/lib64/wine -L/usr/lib/x86_64-linux-gnu/wine
-WINE_LINK_FLAGS  = $(LINK_FLAGS) -ldl
+WINE_BUILD_FLAGS  = $(BUILD_FLAGS) # -fpermissive
+WINE_32BIT_FLAGS  = $(32BIT_FLAGS) -L/usr/lib32/wine -L/usr/lib/i386-linux-gnu/wine
+WINE_64BIT_FLAGS  = $(64BIT_FLAGS) -L/usr/lib64/wine -L/usr/lib/x86_64-linux-gnu/wine
+WINE_LINK_FLAGS   = $(LINK_FLAGS) -ldl
 
 # --------------------------------------------------------------
 
 all: carla-discovery-native
 
-unix32: carla-discovery-unix32
-unix64: carla-discovery-unix64
-win32:  carla-discovery-win32.exe
-win64:  carla-discovery-win64.exe
-wine32: carla-discovery-win32.exe.so
-wine64: carla-discovery-win64.exe.so
+posix32: carla-discovery-posix32
+posix64: carla-discovery-posix64
+win32:   carla-discovery-win32.exe
+win64:   carla-discovery-win64.exe
+wine32:  carla-discovery-win32.exe.so
+wine64:  carla-discovery-win64.exe.so
 
 # --------------------------------------------------------------
 
@@ -69,11 +69,11 @@ wine64: carla-discovery-win64.exe.so
 carla-discovery-native: carla-discovery.cpp ../carla-lilv/carla_lilv.a
 	$(CXX) $^ $(BUILD_FLAGS) $(LINK_FLAGS) -o $@
 
-carla-discovery-unix32: $(32BIT_OBJS)
-	$(CXX) $^ $(UNIX_BUILD_FLAGS) $(UNIX_32BIT_FLAGS) $(UNIX_LINK_FLAGS) -o $@
+carla-discovery-posix32: $(32BIT_OBJS)
+	$(CXX) $^ $(POSIX_BUILD_FLAGS) $(POSIX_32BIT_FLAGS) $(POSIX_LINK_FLAGS) -o $@
 
-carla-discovery-unix64: $(64BIT_OBJS)
-	$(CXX) $^ $(UNIX_BUILD_FLAGS) $(UNIX_64BIT_FLAGS) $(UNIX_LINK_FLAGS) -o $@
+carla-discovery-posix64: $(64BIT_OBJS)
+	$(CXX) $^ $(POSIX_BUILD_FLAGS) $(POSIX_64BIT_FLAGS) $(POSIX_LINK_FLAGS) -o $@
 
 carla-discovery-win32.exe: $(32BIT_OBJS)
 	$(CXX) $^ $(WIN_BUILD_FLAGS) $(WIN_32BIT_FLAGS) $(WIN_LINK_FLAGS) -o $@
diff --git a/c++/carla-includes/carla_includes.h b/c++/carla-includes/carla_includes.h
index cef4758..7d40529 100644
--- a/c++/carla-includes/carla_includes.h
+++ b/c++/carla-includes/carla_includes.h
@@ -19,9 +19,9 @@
 #define CARLA_INCLUDES_H
 
 #ifdef __WINE__
-#  define __socklen_t_defined
-#  define __WINE_WINSOCK2__
-#  define HRESULT LONG
+//#  define __socklen_t_defined
+//#  define __WINE_WINSOCK2__
+//#  define HRESULT LONG
 #  define Q_CORE_EXPORT
 #  define Q_GUI_EXPORT
 #  define QT_NO_STL
@@ -57,14 +57,16 @@
 #  endif
 #endif
 
-// needed for qDebug/Warning/Critical sections (FIXME)
-#if __WORDSIZE == 64
-#  define P_INT64   "%li"
+// needed for qDebug/Warning/Critical sections
+#if defined(Q_OS_WIN64) && ! defined(__WINE__)
+#  define P_INTPTR  "%I64i"
+#  define P_UINTPTR "%I64x"
+#  define P_SIZE    "%I64u"
+#elif __WORDSIZE == 64
 #  define P_INTPTR  "%li"
-#  define P_UINTPTR "%llx"
+#  define P_UINTPTR "%lx"
 #  define P_SIZE    "%lu"
 #else
-#  define P_INT64   "%lli"
 #  define P_INTPTR  "%i"
 #  define P_UINTPTR "%x"
 #  define P_SIZE    "%u"
@@ -72,7 +74,7 @@
 
 // set native binary type
 #if defined(Q_OS_HAIKU) || defined(Q_OS_UNIX)
-#  if __LP64__
+#  ifdef __LP64__
 #    define BINARY_NATIVE BINARY_POSIX64
 #  else
 #    define BINARY_NATIVE BINARY_POSIX32
diff --git a/c++/carla-includes/lv2/options.h b/c++/carla-includes/lv2/options.h
index 089464a..b109ab6 100644
--- a/c++/carla-includes/lv2/options.h
+++ b/c++/carla-includes/lv2/options.h
@@ -19,7 +19,7 @@
 
 #include <stdint.h>
 
-#include "lv2/lv2plug.in/ns/ext/urid/urid.h"
+#include "urid.h"
 
 #define LV2_OPTIONS_URI    "http://lv2plug.in/ns/ext/options"
 #define LV2_OPTIONS_PREFIX LV2_OPTIONS_URI "#"
diff --git a/src/carla_backend.py b/src/carla_backend.py
index 2bcafe9..78e0adb 100644
--- a/src/carla_backend.py
+++ b/src/carla_backend.py
@@ -253,8 +253,10 @@ carla_bridge_win32   = ""
 carla_bridge_win64   = ""
 
 carla_bridge_lv2_gtk2 = ""
+carla_bridge_lv2_gtk3 = ""
 carla_bridge_lv2_qt4  = ""
 carla_bridge_lv2_x11  = ""
+carla_bridge_vst_hwnd = ""
 carla_bridge_vst_x11  = ""
 
 if WINDOWS:
@@ -379,6 +381,15 @@ else:
             carla_bridge_lv2_gtk2 = os.path.join(p, "carla-bridge-lv2-gtk2")
             break
 
+# find carla_bridge_lv2_gtk3
+if os.path.exists(os.path.join(CWDpp, "carla-bridge", "carla-bridge-lv2-gtk3")):
+    carla_bridge_lv2_gtk3 = os.path.join(CWDpp, "carla-bridge", "carla-bridge-lv2-gtk3")
+else:
+    for p in PATH:
+        if os.path.exists(os.path.join(p, "carla-bridge-lv2-gtk3")):
+            carla_bridge_lv2_gtk3 = os.path.join(p, "carla-bridge-lv2-gtk3")
+            break
+
 # find carla_bridge_lv2_qt4
 if os.path.exists(os.path.join(CWDpp, "carla-bridge", "carla-bridge-lv2-qt4")):
     carla_bridge_lv2_qt4 = os.path.join(CWDpp, "carla-bridge", "carla-bridge-lv2-qt4")
@@ -397,6 +408,15 @@ else:
             carla_bridge_lv2_x11 = os.path.join(p, "carla-bridge-lv2-x11")
             break
 
+# find carla_bridge_vst_hwnd
+if os.path.exists(os.path.join(CWDpp, "carla-bridge", "carla-bridge-vst-hwnd.exe")):
+    carla_bridge_vst_hwnd = os.path.join(CWDpp, "carla-bridge", "carla-bridge-vst-hwnd.exe")
+else:
+    for p in PATH:
+        if os.path.exists(os.path.join(p, "carla-bridge-vst-hwnd.exe")):
+            carla_bridge_vst_hwnd = os.path.join(p, "carla-bridge-vst-hwnd.exe")
+            break
+
 # find carla_bridge_vst_x11
 if os.path.exists(os.path.join(CWDpp, "carla-bridge", "carla-bridge-vst-x11")):
     carla_bridge_vst_x11 = os.path.join(CWDpp, "carla-bridge", "carla-bridge-vst-x11")
diff --git a/src/shared_carla.py b/src/shared_carla.py
index dd0cfb9..6a2c785 100644
--- a/src/shared_carla.py
+++ b/src/shared_carla.py
@@ -157,9 +157,11 @@ OPTION_PATH_BRIDGE_POSIX64    = 18
 OPTION_PATH_BRIDGE_WIN32      = 19
 OPTION_PATH_BRIDGE_WIN64      = 20
 OPTION_PATH_BRIDGE_LV2_GTK2   = 21
-OPTION_PATH_BRIDGE_LV2_QT4    = 22
-OPTION_PATH_BRIDGE_LV2_X11    = 23
-OPTION_PATH_BRIDGE_VST_X11    = 24
+OPTION_PATH_BRIDGE_LV2_GTK3   = 22
+OPTION_PATH_BRIDGE_LV2_QT4    = 23
+OPTION_PATH_BRIDGE_LV2_X11    = 24
+OPTION_PATH_BRIDGE_VST_HWND   = 25
+OPTION_PATH_BRIDGE_VST_X11    = 26
 
 # enum CallbackType
 CALLBACK_DEBUG                     = 0