Function ShowExampleAppDocuments

imgui_tiny_app/imgui/imgui_demo.cpp:10750–11014

};

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

    // Options
    enum Target
    {
        Target_None,
        Target_Tab,                 // Create documents as local tab into a local tab bar
        Target_DockSpaceAndWindow   // Create documents as regular windows, and create an embedded dockspace
    };
    static Target opt_target = Target_Tab;
    static bool opt_reorderable = true;
    static ImGuiTabBarFlags opt_fitting_flags = ImGuiTabBarFlags_FittingPolicyDefault_;

    // When (opt_target == Target_DockSpaceAndWindow) there is the possibily that one of our child Document window (e.g. "Eggplant")
    // that we emit gets docked into the same spot as the parent window ("Example: Documents").
    // This would create a problematic feedback loop because selecting the "Eggplant" tab would make the "Example: Documents" tab
    // not visible, which in turn would stop submitting the "Eggplant" window.
    // We avoid this problem by submitting our documents window even if our parent window is not currently visible.
    // Another solution may be to make the "Example: Documents" window use the ImGuiWindowFlags_NoDocking.

    bool window_contents_visible = ImGui::Begin("Example: Documents", p_open, ImGuiWindowFlags_MenuBar);
    if (!window_contents_visible && opt_target != Target_DockSpaceAndWindow)
    {
        ImGui::End();
        return;
    }
    IMGUI_DEMO_MARKER("Examples/Documents");

    // 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++)