while (!glfwWindowShouldClose(window)) {
    // Poll and handle events (inputs, window resize, etc.)
    glfwPollEvents();
    if (glfwGetWindowAttrib(window, GLFW_ICONIFIED) != 0) {
      ImGui_ImplGlfw_Sleep(10);
      continue;
    }
}

static int clicked = 0;
	// 按钮
       if (ImGui::Button("Button"))
           clicked++;
       if (clicked & 1)
       {
           ImGui::SameLine();
           ImGui::Text("Thanks for clicking me!");
       }
       // 选择框
       static bool check = true;
       ImGui::Checkbox("checkbox", &check);
	// 选择按钮
       static int e = 0;
       ImGui::RadioButton("radio a", &e, 0); ImGui::SameLine();
       ImGui::RadioButton("radio b", &e, 1); ImGui::SameLine();
       ImGui::RadioButton("radio c", &e, 2);

       // Color buttons, demonstrate using PushID() to add unique identifier in the ID stack, and changing style.
       for (int i = 0; i < 7; i++)
       {
           if (i > 0)
               ImGui::SameLine();
           ImGui::PushID(i);
           ImGui::PushStyleColor(ImGuiCol_Button, (ImVec4)ImColor::HSV(i / 7.0f, 0.6f, 0.6f));
           ImGui::PushStyleColor(ImGuiCol_ButtonHovered, (ImVec4)ImColor::HSV(i / 7.0f, 0.7f, 0.7f));
           ImGui::PushStyleColor(ImGuiCol_ButtonActive, (ImVec4)ImColor::HSV(i / 7.0f, 0.8f, 0.8f));
           ImGui::Button("Click");
           ImGui::PopStyleColor(3);
           ImGui::PopID();
       }

       // Use AlignTextToFramePadding() to align text baseline to the baseline of framed widgets elements
       // (otherwise a Text+SameLine+Button sequence will have the text a little too high by default!)
       // See 'Demo->Layout->Text Baseline Alignment' for details.
       ImGui::AlignTextToFramePadding();
       ImGui::Text("Hold to repeat:");
       ImGui::SameLine();