Method InvisibleButton

imgui_tiny_app/imgui/imgui_widgets.cpp:841–863

Tip: use ImGui::PushID()/PopID() to push indices or pointers in the ID stack. Then you can keep 'str_id' empty or the same for all your buttons (instead of creating a string based on a non-string id)

// Tip: use ImGui::PushID()/PopID() to push indices or pointers in the ID stack.
// Then you can keep 'str_id' empty or the same for all your buttons (instead of creating a string based on a non-string id)
bool ImGui::InvisibleButton(const char* str_id, const ImVec2& size_arg, ImGuiButtonFlags flags)
{
    ImGuiContext& g = *GImGui;
    ImGuiWindow* window = GetCurrentWindow();
    if (window->SkipItems)
        return false;

    // Ensure zero-size fits to contents
    ImVec2 size = CalcItemSize(ImVec2(size_arg.x != 0.0f ? size_arg.x : -FLT_MIN, size_arg.y != 0.0f ? size_arg.y : -FLT_MIN), 0.0f, 0.0f);

    const ImGuiID id = window->GetID(str_id);
    const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);
    ItemSize(size);
    if (!ItemAdd(bb, id, NULL, (flags & ImGuiButtonFlags_EnableNav) ? ImGuiItemFlags_None : ImGuiItemFlags_NoNav))
        return false;

    bool hovered, held;
    bool pressed = ButtonBehavior(bb, id, &hovered, &held, flags);
    RenderNavCursor(bb, id);

    IMGUI_TEST_ENGINE_ITEM_INFO(id, str_id, g.LastItemData.StatusFlags);
    return pressed;
}

bool ImGui::ArrowButtonEx(const char* str_id, ImGuiDir dir, ImVec2 size, ImGuiButtonFlags flags)
{