main.cpp

#include <iostream>
#include "imgui.h"
#include "imgui_impl_glfw.h"
#include "imgui_impl_opengl3.h"
#include <glfw3.h>

int main()
{
    // Initialize GLFW
    if (!glfwInit())
    {
        std::cerr << "Failed to initialize GLFW" << std::endl;
        return -1;
    }

    // Create a window
    GLFWwindow* window = glfwCreateWindow(800, 600, "ImGui Example", nullptr, nullptr);
    if (!window)
    {
        std::cerr << "Failed to create a window" << std::endl;
        glfwTerminate();
        return -1;
    }

    // Make the window's context current
    glfwMakeContextCurrent(window);

    // Setup ImGui context
    ImGui::CreateContext();
    ImGui_ImplGlfw_InitForOpenGL(window, true);
    ImGui_ImplOpenGL3_Init("#version 150");

    // Main loop
    while (!glfwWindowShouldClose(window))
    {
        // Poll events
        glfwPollEvents();

        // Start a new ImGui frame
        ImGui_ImplOpenGL3_NewFrame();
        ImGui_ImplGlfw_NewFrame();
        ImGui::NewFrame();

        // Create a button and check if it was pressed
        if (ImGui::Button("Print Hello"))
        {
            std::cout << "hello" << std::endl;
        }

        // Render ImGui
        ImGui::Render();
        int display_w, display_h;
        glfwGetFramebufferSize(window, &display_w, &display_h);
        glViewport(0, 0, display_w, display_h);
        glClear(GL_COLOR_BUFFER_BIT);
        ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());

        // Swap buffers
        glfwSwapBuffers(window);
    }

    // Cleanup ImGui
    ImGui_ImplOpenGL3_Shutdown();
    ImGui_ImplGlfw_Shutdown();
    ImGui::DestroyContext();

    // Terminate GLFW
    glfwDestroyWindow(window);
    glfwTerminate();

    return 0;
}