Function IMGUI_CDECL ChildWindowComparer

imgui_tiny_app/imgui/imgui.cpp:5981–5990

FIXME: Add a more explicit sort order in the window structure.

// FIXME: Add a more explicit sort order in the window structure.
static int IMGUI_CDECL ChildWindowComparer(const void* lhs, const void* rhs)
{
    const ImGuiWindow* const a = *(const ImGuiWindow* const *)lhs;
    const ImGuiWindow* const b = *(const ImGuiWindow* const *)rhs;
    if (int d = (a->Flags & ImGuiWindowFlags_Popup) - (b->Flags & ImGuiWindowFlags_Popup))
        return d;
    if (int d = (a->Flags & ImGuiWindowFlags_Tooltip) - (b->Flags & ImGuiWindowFlags_Tooltip))
        return d;
    return a->BeginOrderWithinParent - b->BeginOrderWithinParent;
}

static void AddWindowToSortBuffer(ImVector<ImGuiWindow*>* out_sorted_windows, ImGuiWindow* window)
{