Implement IEditController2::openHelp

src/common/logging/vst3.cpp

@@ -262,6 +262,15 @@ bool Vst3Logger::log_request(bool is_host_vst,
     });
 }
 
+bool Vst3Logger::log_request(bool is_host_vst,
+                             const YaEditController2::OpenHelp& request) {
+    return log_request_base(is_host_vst, [&](auto& message) {
+        message << request.instance_id
+                << ": IEditController2::openHelp(onlyCheck = "
+                << (request.only_check ? "true" : "false") << ")";
+    });
+}
+
 bool Vst3Logger::log_request(
     bool is_host_vst,
     const YaPlugView::IsPlatformTypeSupported& request) {

src/common/logging/vst3.h

@@ -89,6 +89,7 @@ class Vst3Logger {
                      const YaEditController::SetComponentHandler&);
     bool log_request(bool is_host_vst, const YaEditController::CreateView&);
     bool log_request(bool is_host_vst, const YaEditController2::SetKnobMode&);
+    bool log_request(bool is_host_vst, const YaEditController2::OpenHelp&);
     bool log_request(bool is_host_vst,
                      const YaPlugView::IsPlatformTypeSupported&);
     bool log_request(bool is_host_vst, const YaPlugView::Attached&);

src/common/serialization/vst3.h

@@ -82,6 +82,7 @@ using ControlRequest = std::variant<Vst3PlugViewProxy::Destruct,
                                     YaEditController::SetComponentHandler,
                                     YaEditController::CreateView,
                                     YaEditController2::SetKnobMode,
+                                    YaEditController2::OpenHelp,
                                     YaPlugView::IsPlatformTypeSupported,
                                     YaPlugView::Attached,
                                     YaPlugView::Removed,

src/common/serialization/vst3/plugin/edit-controller-2.h

@@ -81,6 +81,25 @@ class YaEditController2 : public Steinberg::Vst::IEditController2 {
 
     virtual tresult PLUGIN_API
     setKnobMode(Steinberg::Vst::KnobMode mode) override = 0;
+
+    /**
+     * Message to pass through a call to
+     * `IEditController2::openHelp(only_check)` to the Wine plugin host.
+     */
+    struct OpenHelp {
+        using Response = UniversalTResult;
+
+        native_size_t instance_id;
+
+        TBool only_check;
+
+        template <typename S>
+        void serialize(S& s) {
+            s.value8b(instance_id);
+            s.value1b(only_check);
+        }
+    };
+
     virtual tresult PLUGIN_API openHelp(TBool onlyCheck) override = 0;
     virtual tresult PLUGIN_API openAboutBox(TBool onlyCheck) override = 0;
 

src/plugin/bridges/vst3-impls/plugin-proxy.cpp

@@ -399,9 +399,8 @@ Vst3PluginProxyImpl::setKnobMode(Steinberg::Vst::KnobMode mode) {
 }
 
 tresult PLUGIN_API Vst3PluginProxyImpl::openHelp(TBool onlyCheck) {
-    // TODO: Implement
-    bridge.logger.log("TODO: IEditController2::openHelp()");
-    return Steinberg::kNotImplemented;
+    return bridge.send_message(YaEditController2::OpenHelp{
+        .instance_id = instance_id(), .only_check = onlyCheck});
 }
 
 tresult PLUGIN_API Vst3PluginProxyImpl::openAboutBox(TBool onlyCheck) {

src/wine-host/bridges/vst3.cpp

@@ -341,6 +341,11 @@ void Vst3Bridge::run() {
                 return object_instances[request.instance_id]
                     .edit_controller_2->setKnobMode(request.mode);
             },
+            [&](const YaEditController2::OpenHelp& request)
+                -> YaEditController2::OpenHelp::Response {
+                return object_instances[request.instance_id]
+                    .edit_controller_2->openHelp(request.only_check);
+            },
             [&](const YaPlugView::IsPlatformTypeSupported& request)
                 -> YaPlugView::IsPlatformTypeSupported::Response {
                 // The host will of course want to pass an X11 window ID for the