Create example

.gitignore

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+build

CMakeLists.txt

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+PROJECT ( example )
+
+cmake_minimum_required( VERSION 3.22 )
+
+FIND_PACKAGE ( PkgConfig REQUIRED )
+PKG_CHECK_MODULES( GTK REQUIRED gtkmm-4.0)
+INCLUDE_DIRECTORIES ( ${GTK_INCLUDE_DIRS} )
+
+
+
+ADD_EXECUTABLE ( example main.cpp )
+TARGET_LINK_LIBRARIES( example ${CMAKE_THREAD_LIBS_INIT} ${GTK_LIBRARIES}  )
+

README.md

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+# GTK Example
+
+### Ubuntu
+
+```bash
+sudo apt install libgtkmm-2.4-dev
+```

compile.sh

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+#!/bin/bash
+
+#g++ main.cpp $(pkg-config gtkmm-4.0 --cflags --libs)
+
+mkdir -p build
+cd build
+cmake ..
+make

install.sh

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+#!/bin/bash
+
+set -e
+
+# https://terminalroot.com/how-to-install-gtkmm-4-on-ubuntu-2204/
+# https://www.devdungeon.com/wiki/doku.php?id=programming:gtk4
+
+#sudo apt install build-essential git g++ autotools-dev libgtkmm-3.0-dev \
+#	libgtkmm-3.0-doc mm-common libgtk-4-bin \
+#	libgtk-4-common libgtk-4-dev libgtk-4-doc pkg-config
+
+if [ ! -f libsigc++-3.0.7.tar.xz ]; then
+	wget https://download.gnome.org/sources/libsigc++/3.0/libsigc++-3.0.7.tar.xz
+fi
+tar Jxvf libsigc++-3.0.7.tar.xz
+cd libsigc++-3.0.7/
+./autogen.sh --prefix=/usr/local
+make -j`nproc --ignore=2`
+sudo make install
+
+if [ ! -f glibmm-2.68.2.tar.xz ]; then
+	wget https://download.gnome.org/sources/glibmm/2.68/glibmm-2.68.2.tar.xz
+fi
+tar Jxvf glibmm-2.68.2.tar.xz
+cd glibmm-2.68.2/
+./autogen.sh --prefix=/usr
+make -j`nproc --ignore=2`
+sudo make install
+
+cd ..
+
+if [ ! -d cairomm ]; then
+	git clone https://github.com/freedesktop/cairomm.git
+fi
+cd cairomm
+./autogen.sh --prefix=/usr
+make -j`nproc --ignore=2`
+sudo make install
+
+cd ..
+
+if [ ! -f pangomm-2.50.0.tar.xz ]; then
+	wget https://download.gnome.org/sources/pangomm/2.50/pangomm-2.50.0.tar.xz
+fi
+tar Jxvf pangomm-2.50.0.tar.xz
+cd pangomm-2.50.0/
+./autogen.sh --prefix=/usr
+make -j`nproc --ignore=2`
+sudo make install
+
+cd ..
+
+ls /usr/lib/libsigc-3*
+
+sudo ln -s /usr/local/lib/libsigc-3.0.so.0.0.0 /usr/lib/libsigc-3.0.so.0.0.0
+sudo ln -s /usr/local/lib/libsigc-3.0.la /usr/lib/libsigc-3.0.la
+sudo ln -s /usr/local/lib/libsigc-3.0.so /usr/lib/libsigc-3.0.so
+sudo ln -s /usr/local/lib/libsigc-3.0.so.0 /usr/lib/libsigc-3.0.so.0
+
+if [ ! -f gtkmm-4.6.1.tar.xz ]; then
+	wget https://download.gnome.org/sources/gtkmm/4.6/gtkmm-4.6.1.tar.xz
+	wget https://download.gnome.org/sources/gtkmm/4.6/gtkmm-4.6.1.sha256sum
+	sha256sum -c --ignore-missing gtkmm-4.6.1.sha256sum
+fi
+tar Jxvf gtkmm-4.6.1.tar.xz
+cd gtkmm-4.6.1
+./autogen.sh --prefix=/usr
+make -j`nproc --ignore=2`
+sudo make install

main.cpp

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+#include <gtkmm.h>
+
+class GTKExample : public Gtk::Window {
+public:
+  GTKExample();
+};
+
+GTKExample::GTKExample(){
+  set_title("GTK Example");
+  set_default_size(800, 450);
+}
+
+int main(int argc, char ** argv){
+  auto app = Gtk::Application::create("com.example.gtk");
+  return app->make_window_and_run<GTKExample>(argc, argv);
+}