4866 bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)  in Begin()  argument
4903     window->HasCloseButton = (p_open != NULL);  in Begin()
5380             if (p_open != NULL)  in Begin()
5385                     *p_open = false;  in Begin()
5399 …float pad_right = (p_open == NULL)                     ? style.FramePadding.x : (style.FramePaddin…  in Begin()
5405 …clip_rect.Max.x = window->Pos.x + window->Size.x - (p_open ? title_bar_rect.GetHeight() - 3 : styl…  in Begin()
5489 bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_first_use, float bg_alpha_over…  in Begin()  argument
5499     return Begin(name, p_open, flags);  in Begin()
6938 bool ImGui::BeginPopupModal(const char* name, bool* p_open, ImGuiWindowFlags flags)  in BeginPopupModal()  argument
6955     const bool is_open = Begin(name, p_open, flags);  in BeginPopupModal()
6956 …if (!is_open || (p_open && !*p_open)) // NB: is_open can be 'false' when the popup is completely c…  in BeginPopupModal()
9279 void ImGui::ShowMetricsWindow(bool* p_open)  in ShowMetricsWindow()  argument
9281     if (!ImGui::Begin("ImGui Metrics", p_open))  in ShowMetricsWindow()