Using resources instead of .ui files.

CMakeLists.txt

@@ -1,10 +1,12 @@
 cmake_minimum_required(VERSION 3.30)
-project(BillyGui LANGUAGES CXX)
+project(BillyGui LANGUAGES C CXX)
 
 include(FetchContent)
 find_package(PkgConfig REQUIRED)
 pkg_check_modules(GTKMM4 REQUIRED IMPORTED_TARGET gtkmm-4.0)
 
+find_program(GLIB_COMPILE_RESOURCES NAMES glib-compile-resources REQUIRED)
+
 fetchcontent_declare(BillySheet
         GIT_REPOSITORY https://gitea.pcornatcloud.fr/Pcornat/BillySheet.git
         GIT_TAG main
@@ -73,13 +75,41 @@ set(SPDLOG_NO_TLS ON)
 set(SPDLOG_NO_ATOMIC_LEVELS ON)
 fetchcontent_makeavailable(spdlog)
 
+set(GRESOURCE_C resources.c)
+set(GRESOURCE_XML billy_gui.gresource.xml)
+
+# Step 2:
+add_custom_command(
+        OUTPUT ${GRESOURCE_C}
+        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+        COMMAND ${GLIB_COMPILE_RESOURCES}
+        ARGS
+        --target=${CMAKE_CURRENT_BINARY_DIR}/${GRESOURCE_C} ${GRESOURCE_XML} --generate-source
+        VERBATIM
+        MAIN_DEPENDENCY ${GRESOURCE_XML}
+        DEPENDS window_ui.ui menu_bar.ui
+)
+
+# Step 3:
+add_custom_target(
+        dummy-resource
+        DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${GRESOURCE_C}
+)
+
 add_executable(${PROJECT_NAME} main.cpp
         hello_world.cpp
         hello_world.hpp
         app_win_2_back.cpp
         app_win_2_back.hpp
+        ${CMAKE_CURRENT_BINARY_DIR}/${GRESOURCE_C}
 )
 
+set_source_files_properties(
+        ${CMAKE_CURRENT_BINARY_DIR}/${GRESOURCE_C}
+        PROPERTIES GENERATED TRUE
+)
+add_dependencies(${PROJECT_NAME} dummy-resource)
+
 set_target_properties(${PROJECT_NAME} spdlog_header_only PROPERTIES
         CXX_STANDARD 23
         CXX_STANDARD_REQUIRED ON

app_win_2_back.cpp

@@ -25,7 +25,7 @@ namespace gui_to_app {
         Application::on_startup();
         const auto menu_bar = [this]() -> Glib::RefPtr<Gio::Menu> {
             try {
-                menu_builder = Gtk::Builder::create_from_file("menu_bar.ui");
+                menu_builder = Gtk::Builder::create_from_resource("/org/gtkmm/billy_gui/menu_bar.ui");
                 if (menu_builder != nullptr) {
                     return menu_builder->get_object<Gio::Menu>("menu");
                 } else {
@@ -150,7 +150,7 @@ namespace gui_to_app {
 
         window_builder = [] -> Glib::RefPtr<Gtk::Builder> {
             try {
-                return Gtk::Builder::create_from_file("window_ui.ui");
+                return Gtk::Builder::create_from_resource("/org/gtkmm/billy_gui/window_ui.ui");
             } catch (const std::exception &e) {
                 spdlog::critical("Error occurred while loading Window's UI: {}", e.what());
                 return nullptr;

billy_gui.gresource.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<gresources>
+  <gresource prefix="/org/gtkmm/billy_gui">
+    <file preprocess="xml-stripblanks">window_ui.ui</file>
+    <file preprocess="xml-stripblanks">menu_bar.ui</file>
+  </gresource>
+</gresources>