Add option to fully customize the menu

src/hello_imgui/hello_imgui.cpp

@@ -1,5 +1,7 @@
 #include "hello_imgui/hello_imgui.h"
 #include "hello_imgui/internal/backend_impls/runner_factory.h"
+#include "hello_imgui/internal/menu_statusbar.h"
+#include "hello_imgui/internal/docking_details.h"
 #include "imgui_internal.h"
 #include <deque>
 #include <set>
@@ -162,4 +164,14 @@ std::string LoadUserPref(const std::string& userPrefName)
     return gLastRunner->LoadUserPref(userPrefName);
 }
 
+
+void ShowViewMenu(RunnerParams & runnerParams)
+{
+    DockingDetails::ShowViewMenu(runnerParams);
+}
+void ShowAppMenu(RunnerParams & runnerParams)
+{
+    Menu_StatusBar::ShowDefaultAppMenu_Quit(runnerParams);
+}
+
 }  // namespace HelloImGui

src/hello_imgui/hello_imgui.h

@@ -113,4 +113,26 @@ and it is not intended to store large quantities of text data. Use sparingly.
 */
     void        SaveUserPref(const std::string& userPrefName, const std::string& userPrefContent);
     std::string LoadUserPref(const std::string& userPrefName);
+
+
+
+/**
+@@md# Menu
+
+Hello ImGui provides a default menu and status bar, which you can customize by using the params:
+        `RunnerParams.imGuiWindowParams.` `showMenuBar` / `showMenu_App` / `showMenu_View`
+
+If you want to fully customize the menu:
+    * set `showMenuBar` to true, then set `showMenu_App` and `showMenu_View` params to false
+    * implement the callback `RunnerParams.callbacks.ShowMenus`: it can optionally call `ShowViewMenu` and `ShowAppMenu` (see below).
+
+* `ShowViewMenu(RunnerParams & runnerParams)`: shows the View menu (where you can select the layout
+   and docked windows visibility).
+* `ShowAppMenu(RunnerParams & runnerParams)`: shows the default App menu (including the Quit item)
+@@md
+*/
+void ShowViewMenu(RunnerParams & runnerParams);
+void ShowAppMenu(RunnerParams & runnerParams);
+
+
 }

src/hello_imgui/hello_imgui_api.md

@@ -438,8 +438,10 @@ In order to change the application window settings, change the _AppWindowsParams
     control over what is drawn behind the Gui.
 
   * `showMenuBar`: _bool, default=false_.
-    Show Menu bar on top of imgui main window
-    You can customize the menu via `RunnerCallbacks.ShowMenus()`
+    Show Menu bar on top of imgui main window.
+    In order to fully customize the menu, set showMenuBar to true, and set showMenu_App and showMenu_View params to false.
+    Then, implement the callback `RunnerParams.callbacks.ShowMenus` which can optionally call `HelloImGui::ShowViewMenu`
+    and `HelloImGui::ShowAppMenu`.
 
   * `showMenu_App`: _bool, default=true_.
     If menu bar is shown, include or not the default app menu

src/hello_imgui/imgui_window_params.h

@@ -45,8 +45,10 @@ In order to change the application window settings, change the _AppWindowsParams
     control over what is drawn behind the Gui.
 
   * `showMenuBar`: _bool, default=false_.
-    Show Menu bar on top of imgui main window
-    You can customize the menu via `RunnerCallbacks.ShowMenus()`
+    Show Menu bar on top of imgui main window.
+    In order to fully customize the menu, set showMenuBar to true, and set showMenu_App and showMenu_View params to false.
+    Then, implement the callback `RunnerParams.callbacks.ShowMenus` which can optionally call `HelloImGui::ShowViewMenu`
+    and `HelloImGui::ShowAppMenu`.
 
   * `showMenu_App`: _bool, default=true_.
     If menu bar is shown, include or not the default app menu
@@ -110,4 +112,5 @@ struct ImGuiWindowParams
     bool rememberTheme = true;
 };
 
+
 }  // namespace HelloImGui

src/hello_imgui/internal/menu_statusbar.h

@@ -6,5 +6,7 @@ namespace Menu_StatusBar
 {
     void ShowMenu(RunnerParams & runnerParams);
     void ShowStatusBar(RunnerParams & params);
+
+    void ShowDefaultAppMenu_Quit(RunnerParams & runnerParams);
 }  // namespace Menu_StatusBar
 }  // namespace HelloImGui

src/hello_imgui_demos/hello_imgui_demodocking/hello_imgui_demodocking.main.cpp

@@ -297,8 +297,11 @@ void StatusBarGui(AppState& app_state)
 }
 
 // The menu gui
-void ShowMenuGui()
+void ShowMenuGui(HelloImGui::RunnerParams& runnerParams)
 {
+    HelloImGui::ShowAppMenu(runnerParams);
+    HelloImGui::ShowViewMenu(runnerParams);
+
     if (ImGui::BeginMenu("My Menu"))
     {
         bool clicked = ImGui::MenuItem("Test me", "", false);
@@ -512,9 +515,16 @@ int main(int, char**)
     //
     // Menu bar
     //
-    runnerParams.imGuiWindowParams.showMenuBar = true;          // We use the default menu of Hello ImGui
-    runnerParams.callbacks.ShowMenus = ShowMenuGui;             // where we add items to the default menu
-    runnerParams.callbacks.ShowAppMenuItems = ShowAppMenuItems; // and where add items to the App menu
+    // Here, we fully customize the menu bar:
+    // by setting `showMenuBar` to true, and `showMenu_App` and `showMenu_View` to false,
+    // HelloImGui will display an empty menu bar, which we can fill with our own menu items via the callback `ShowMenus`
+    runnerParams.imGuiWindowParams.showMenuBar = true;
+    runnerParams.imGuiWindowParams.showMenu_App = false;
+    runnerParams.imGuiWindowParams.showMenu_View = false;
+    // Inside `ShowMenus`, we can call `HelloImGui::ShowViewMenu` and `HelloImGui::ShowAppMenu` if desired
+    runnerParams.callbacks.ShowMenus = [&runnerParams]() {ShowMenuGui(runnerParams);};
+    // Optional: add items to Hello ImGui default App menu
+    runnerParams.callbacks.ShowAppMenuItems = ShowAppMenuItems;
 
     //
     // Load user settings at `PostInit` and save them at `BeforeExit`