// Setup Dear ImGui context
IMGUI_CHECKVERSION();
ImGui::CreateContext();
ImGuiIO& io = ImGui::GetIO(); (void)io;// Setup Dear ImGui style
ImGui::StyleColorsDark();
//ImGui::StyleColorsClassic();// Setup Platform/Renderer bindings
ImGui_ImplGlfw_InitForOpenGL(window, true);
ImGui_ImplOpenGL3_Init(glsl_version); //glsl_version可以使用字符串"#version 150"替代bool show_demo_window = true;
bool show_another_window = false;
ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);// Main loop
while (!glfwWindowShouldClose(window))
{glfwPollEvents();// Start the Dear ImGui frameImGui_ImplOpenGL3_NewFrame();ImGui_ImplGlfw_NewFrame();ImGui::NewFrame();// 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).if (show_demo_window)ImGui::ShowDemoWindow(&show_demo_window);// 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.{static float f = 0.0f;static int counter = 0;ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close stateImGui::Checkbox("Another Window", &show_another_window);ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0fImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a colorif (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)counter++;ImGui::SameLine();ImGui::Text("counter = %d", counter);ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);ImGui::End();}// 3. Show another simple window.if (show_another_window){ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)ImGui::Text("Hello from another window!");if (ImGui::Button("Close Me"))show_another_window = false;ImGui::End();}// RenderingImGui::Render();int display_w, display_h;glfwMakeContextCurrent(window);glfwGetFramebufferSize(window, &display_w, &display_h);glViewport(0, 0, display_w, display_h);glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);glClear(GL_COLOR_BUFFER_BIT);ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());glfwMakeContextCurrent(window);glfwSwapBuffers(window);
}// Cleanup
ImGui_ImplOpenGL3_Shutdown();
ImGui_ImplGlfw_Shutdown();
ImGui::DestroyContext();
