Function ShowExampleAppDocuments

src/imgui/imgui_demo.cpp:10250–10445

};

void ShowExampleAppDocuments(bool* p_open)
{
    static ExampleAppDocuments app;

    // Options
    static bool opt_reorderable = true;
    static ImGuiTabBarFlags opt_fitting_flags = ImGuiTabBarFlags_FittingPolicyDefault_;

    bool window_contents_visible = ImGui::Begin("Example: Documents", p_open, ImGuiWindowFlags_MenuBar);
    if (!window_contents_visible)
    {
        ImGui::End();
        return;
    }

    // Menu
    if (ImGui::BeginMenuBar())
    {
        if (ImGui::BeginMenu("File"))
        {
            int open_count = 0;
            for (MyDocument& doc : app.Documents)
                open_count += doc.Open ? 1 : 0;

            if (ImGui::BeginMenu("Open", open_count < app.Documents.Size))
            {
                for (MyDocument& doc : app.Documents)
                    if (!doc.Open && ImGui::MenuItem(doc.Name))
                        doc.DoOpen();
                ImGui::EndMenu();
            }
            if (ImGui::MenuItem("Close All Documents", NULL, false, open_count > 0))
                for (MyDocument& doc : app.Documents)
                    app.CloseQueue.push_back(&doc);
            if (ImGui::MenuItem("Exit") && p_open)
                *p_open = false;
            ImGui::EndMenu();
        }
        ImGui::EndMenuBar();
    }

    // [Debug] List documents with one checkbox for each
    for (int doc_n = 0; doc_n < app.Documents.Size; doc_n++)
    {
        MyDocument& doc = app.Documents[doc_n];
        if (doc_n > 0)
            ImGui::SameLine();
        ImGui::PushID(&doc);
        if (ImGui::Checkbox(doc.Name, &doc.Open))
            if (!doc.Open)
                doc.DoForceClose();
        ImGui::PopID();
    }

    ImGui::Separator();

    // About the ImGuiWindowFlags_UnsavedDocument / ImGuiTabItemFlags_UnsavedDocument flags.
    // They have multiple effects: