trying to clear the context menu, but that does not work

build_menu_from_json.cpp

@@ -3,6 +3,7 @@
 #include <QJsonObject>
 #include <QMenu>
 #include "rktwebview_qt.h"
+#include "utils.h"
 
 static QAction *addMenuItemFromJson(Rktwebview_qt *owner,
                                     QMenu *menu,
@@ -87,6 +88,7 @@ QMenu *buildMenuFromJson(Rktwebview_qt *self, const QString &menu_json, int sour
     QJsonDocument doc = QJsonDocument::fromJson(menu_json.toUtf8(), &err);
 
     if (err.error != QJsonParseError::NoError || !doc.isObject()) {
+        ERROR2("Json parse error for menu: %d, '%s'\n", err.error, err.errorString().toUtf8().constData());
         return nullptr;
     }
 

main.cpp

@@ -384,6 +384,12 @@ void Handler::run()
                 result_queue->enqueue(r);
             }
             break;
+            case CMD_TRAY_CLEAR_MENU: {
+                int tray = data_obj["wv"].toInt();
+                result_t r = webview_handler->rktTraySetMenu(tray, nullptr);
+                result_queue->enqueue(r);
+            }
+            break;
             case CMD_TRAY_SET_MENU: {
                 int tray = data_obj["wv"].toInt();
                 QString menu_json = data_obj["menu_json"].toString();

rkt_protocol.h

@@ -34,6 +34,7 @@
 #define CMD_TRAY_SET_TOOLTIP  31    // arguments: tray: int, tooltip: string -> result_t: int
 #define CMD_TRAY_SHOW_MESSAGE 32    // arguments: tray: int, title: string, message: string -> result_t: int
 #define CMD_TRAY_SET_MENU     33    // arguments: tray: int, menu_json: string -> result_t: int
+#define CMD_TRAY_CLEAR_MENU   34    // arguments: tray: int
 
 
 #define CMD_NOOP        33621

rktwebview.cpp

@@ -966,6 +966,10 @@ result_t rkt_webview_tray_show_message(rktwebview_t tray, const char *title, con
 
 result_t rkt_webview_tray_set_menu(rktwebview_t tray, const char *menu_json)
 {
-    CMDRES(CMD_TRAY_SET_MENU, tray, "menu", menu_json)
+    if (menu_json == nullptr) {
+        CMDRES0(CMD_TRAY_CLEAR_MENU, tray)
+    } else {
+        CMDRES(CMD_TRAY_SET_MENU, tray, "menu_json", menu_json)
+    }
 }
 

rktwebview_qt.cpp

@@ -567,7 +567,8 @@ void Rktwebview_qt::processCommand(Command *cmd)
     break;
     case COMMAND_TRAY_SET_MENU: {
         int tray_id = cmd->args[0].toInt();
-        QString menu_json = cmd->args[1].toString();
+        int has_menu = cmd->args[1].toInt();
+        QString menu_json = cmd->args[2].toString();
 
         if (!_trays.contains(tray_id)) {
             cmd->result = false;
@@ -581,10 +582,20 @@ void Rktwebview_qt::processCommand(Command *cmd)
             delete old;
         }
 
-        QMenu *menu = buildMenuFromJson(this, menu_json, tray_id);
+        QMenu *menu = (has_menu) ? buildMenuFromJson(this, menu_json, tray_id) : nullptr;
         if (menu == nullptr) {
-            cmd->result = false;
+            if (!has_menu) {
-            cmd->done = true;
+                INFO1("null menu, setting null menu on tray %d\n", tray_id);
+                _trays[tray_id]->setContextMenu(nullptr);
+                INFO0("Done setting tray menu to null menu\n");
+                WARN0("Note: on Linux, this will not clear the context menu\n");
+                cmd->result = true;
+                cmd->done = true;
+            } else {
+                ERROR2("menu json '%s' for tray %d is not oke\n", menu_json.toUtf8().constData(), tray_id);
+                cmd->result = false;
+                cmd->done = true;
+            }
         } else {
             _tray_menus[tray_id] = menu;
             _trays[tray_id]->setContextMenu(menu);
@@ -606,6 +617,17 @@ void Rktwebview_qt::handleTrayActivation(QSystemTrayIcon::ActivationReason reaso
 {
     QObject *obj = sender();
 
+    QSystemTrayIcon *icn = qobject_cast<QSystemTrayIcon *>(obj);
+
+    // If a context menu has been set, pop it up and leave.
+    /*if (reason == QSystemTrayIcon::ActivationReason::Context) {
+        QMenu *mnu = icn->contextMenu();
+        if (mnu != nullptr) {
+            mnu->popup(QCursor::pos());
+            return;
+        }
+    }*/
+
     int tray_wv = obj->property("tray-id").toInt();
     QString evt = "tray-activated";
     QString reason_str = activationReasonToString(reason);
@@ -1123,7 +1145,8 @@ result_t Rktwebview_qt::rktTraySetMenu(rktwebview_t tray, const char *menu_json)
 {
     Command c(COMMAND_TRAY_SET_MENU);
     c.args.push_back(tray);
-    c.args.push_back(menu_json);
+    c.args.push_back(menu_json != nullptr);
+    c.args.push_back((menu_json == nullptr) ? "" : menu_json);
 
     postCommand(&c);
     while(!c.done) { doEvents(); }