Method ShowDemoWindow

imgui_tiny_app/imgui/imgui_demo.cpp:351–724

Demonstrate most Dear ImGui features (this is big function!) You may execute this function to experiment with the UI and understand what it does. You may then search for keywords in the code when you are interested by a specific feature.

// You may execute this function to experiment with the UI and understand what it does.
// You may then search for keywords in the code when you are interested by a specific feature.
void ImGui::ShowDemoWindow(bool* p_open)
{
    // Exceptionally add an extra assert here for people confused about initial Dear ImGui setup
    // Most functions would normally just assert/crash if the context is missing.
    IM_ASSERT(ImGui::GetCurrentContext() != NULL && "Missing Dear ImGui context. Refer to examples app!");

    // Verify ABI compatibility between caller code and compiled version of Dear ImGui. This helps detects some build issues.
    IMGUI_CHECKVERSION();

    // Stored data
    static ImGuiDemoWindowData demo_data;

    // Examples Apps (accessible from the "Examples" menu)
    if (demo_data.ShowMainMenuBar)          { ShowExampleAppMainMenuBar(); }
    if (demo_data.ShowAppDockSpace)         { ShowExampleAppDockSpace(&demo_data.ShowAppDockSpace); } // Important: Process the Docking app first, as explicit DockSpace() nodes needs to be submitted early (read comments near the DockSpace function)
    if (demo_data.ShowAppDocuments)         { ShowExampleAppDocuments(&demo_data.ShowAppDocuments); } // ...process the Document app next, as it may also use a DockSpace()
    if (demo_data.ShowAppAssetsBrowser)     { ShowExampleAppAssetsBrowser(&demo_data.ShowAppAssetsBrowser); }
    if (demo_data.ShowAppConsole)           { ShowExampleAppConsole(&demo_data.ShowAppConsole); }
    if (demo_data.ShowAppCustomRendering)   { ShowExampleAppCustomRendering(&demo_data.ShowAppCustomRendering); }
    if (demo_data.ShowAppLog)               { ShowExampleAppLog(&demo_data.ShowAppLog); }
    if (demo_data.ShowAppLayout)            { ShowExampleAppLayout(&demo_data.ShowAppLayout); }
    if (demo_data.ShowAppPropertyEditor)    { ShowExampleAppPropertyEditor(&demo_data.ShowAppPropertyEditor, &demo_data); }
    if (demo_data.ShowAppSimpleOverlay)     { ShowExampleAppSimpleOverlay(&demo_data.ShowAppSimpleOverlay); }
    if (demo_data.ShowAppAutoResize)        { ShowExampleAppAutoResize(&demo_data.ShowAppAutoResize); }
    if (demo_data.ShowAppConstrainedResize) { ShowExampleAppConstrainedResize(&demo_data.ShowAppConstrainedResize); }
    if (demo_data.ShowAppFullscreen)        { ShowExampleAppFullscreen(&demo_data.ShowAppFullscreen); }
    if (demo_data.ShowAppLongText)          { ShowExampleAppLongText(&demo_data.ShowAppLongText); }
    if (demo_data.ShowAppWindowTitles)      { ShowExampleAppWindowTitles(&demo_data.ShowAppWindowTitles); }

    // Dear ImGui Tools (accessible from the "Tools" menu)
    if (demo_data.ShowMetrics)              { ImGui::ShowMetricsWindow(&demo_data.ShowMetrics); }
    if (demo_data.ShowDebugLog)             { ImGui::ShowDebugLogWindow(&demo_data.ShowDebugLog); }
    if (demo_data.ShowIDStackTool)          { ImGui::ShowIDStackToolWindow(&demo_data.ShowIDStackTool); }
    if (demo_data.ShowAbout)                { ImGui::ShowAboutWindow(&demo_data.ShowAbout); }
    if (demo_data.ShowStyleEditor)
    {
        ImGui::Begin("Dear ImGui Style Editor", &demo_data.ShowStyleEditor);
        ImGui::ShowStyleEditor();
        ImGui::End();
    }

    // Demonstrate the various window flags. Typically you would just use the default!
    static bool no_titlebar = false;
    static bool no_scrollbar = false;
    static bool no_menu = false;
    static bool no_move = false;
    static bool no_resize = false;
    static bool no_collapse = false;
    static bool no_close = false;
    static bool no_nav = false;
    static bool no_background = false;
    static bool no_bring_to_front = false;
    static bool no_docking = false;
    static bool unsaved_document = false;

    ImGuiWindowFlags window_flags = 0;
    if (no_titlebar)        window_flags |= ImGuiWindowFlags_NoTitleBar;
    if (no_scrollbar)       window_flags |= ImGuiWindowFlags_NoScrollbar;