Added hide/show for darwin

example/main.go

@@ -25,9 +25,9 @@ func onReady() {
 	systray.SetIcon(icon.Data)
 	systray.SetTitle("Awesome App")
 	systray.SetTooltip("Lantern")
-	mQuit := systray.AddMenuItem("Quit", "Quit the whole app")
+	mQuitOrig := systray.AddMenuItem("Quit", "Quit the whole app")
 	go func() {
-		<-mQuit.ClickedCh
+		<-mQuitOrig.ClickedCh
 		fmt.Println("Requesting quit")
 		systray.Quit()
 		fmt.Println("Finished quitting")
@@ -44,6 +44,8 @@ func onReady() {
 		systray.AddMenuItem("Ignored", "Ignored")
 		mUrl := systray.AddMenuItem("Open Lantern.org", "my home")
 		mQuit := systray.AddMenuItem("退出", "Quit the whole app")
+		mToggle := systray.AddMenuItem("Toggle", "Toggle the Quit button")
+		shown := true
 		for {
 			select {
 			case <-mChange.ClickedCh:
@@ -61,6 +63,14 @@ func onReady() {
 				mEnabled.Disable()
 			case <-mUrl.ClickedCh:
 				open.Run("https://www.getlantern.org")
+			case <-mToggle.ClickedCh:
+				if shown {
+					mQuitOrig.Hide()
+					shown = false
+				} else {
+					mQuitOrig.Show()
+					shown = true
+				}
 			case <-mQuit.ClickedCh:
 				systray.Quit()
 				fmt.Println("Quit2 now...")

systray.go

@@ -129,6 +129,16 @@ func (item *MenuItem) Disable() {
 	item.update()
 }
 
+// Hide hides a menu item
+func (item *MenuItem) Hide() {
+	hideMenuItem(item)
+}
+
+// Show shows a previously hidden menu item
+func (item *MenuItem) Show() {
+	showMenuItem(item)
+}
+
 // Checked returns if the menu item has a check mark
 func (item *MenuItem) Checked() bool {
 	return item.checked

systray.h

@@ -7,4 +7,6 @@ void setIcon(const char* iconBytes, int length);
 void setTitle(char* title);
 void setTooltip(char* tooltip);
 void add_or_update_menu_item(int menuId, char* title, char* tooltip, short disabled, short checked);
+void hide_menu_item(int menuId);
+void show_menu_item(int menuId);
 void quit();

systray_darwin.m

@@ -108,6 +108,28 @@
   }
 }
 
+- (void) hide_menu_item:(NSNumber*) menuId
+{
+  NSMenuItem* menuItem;
+  int existedMenuIndex = [menu indexOfItemWithRepresentedObject: menuId];
+  if (existedMenuIndex == -1) {
+    return;
+  }
+  menuItem = [menu itemAtIndex: existedMenuIndex];
+  [menuItem setHidden:TRUE];
+}
+
+- (void) show_menu_item:(NSNumber*) menuId
+{
+  NSMenuItem* menuItem;
+  int existedMenuIndex = [menu indexOfItemWithRepresentedObject: menuId];
+  if (existedMenuIndex == -1) {
+    return;
+  }
+  menuItem = [menu itemAtIndex: existedMenuIndex];
+  [menuItem setHidden:NO];
+}
+
 - (void) quit
 {
   [NSApp terminate:self];
@@ -156,6 +178,16 @@ void add_or_update_menu_item(int menuId, char* title, char* tooltip, short disab
   runInMainThread(@selector(add_or_update_menu_item:), (id)item);
 }
 
+void hide_menu_item(int menuId) {
+  NSNumber *mId = [NSNumber numberWithInt:menuId];
+  runInMainThread(@selector(hide_menu_item:), (id)mId);
+}
+
+void show_menu_item(int menuId) {
+  NSNumber *mId = [NSNumber numberWithInt:menuId];
+  runInMainThread(@selector(show_menu_item:), (id)mId);
+}
+
 void quit() {
   runInMainThread(@selector(quit), nil);
 }

systray_nonwindows.go

@@ -60,6 +60,18 @@ func addOrUpdateMenuItem(item *MenuItem) {
 	)
 }
 
+func hideMenuItem(item *MenuItem) {
+	C.hide_menu_item(
+		C.int(item.id),
+	)
+}
+
+func showMenuItem(item *MenuItem) {
+	C.show_menu_item(
+		C.int(item.id),
+	)
+}
+
 //export systray_ready
 func systray_ready() {
 	systrayReady()