How to check/uncheck Menu Items without closing a Menu

[Flix01]

I've quickly found an easy way to do it:

            // Just a test to check/uncheck multiple checkItems without closing the Menu (with the RMB)
            static bool booleanProps[3]={true,false,true};
            static const char* names[3]={"Boolean Test 1","Boolean Test 2","Boolean Test 3"};
            const bool isRightMouseButtonClicked = ImGui::IsMouseClicked(1);    // cached
            for (int i=0;i<3;i++)   {
                ImGui::MenuItem(names[i], NULL, &booleanProps[i]);
                if (isRightMouseButtonClicked && ImGui::IsItemHovered()) booleanProps[i]=!booleanProps[i];
            }

... just in case someone is interested...

@ocornut: you can close this issue at any time, since I've solved it.

[ocornut]

This is a rather commonly asked question, but I don't think I have answered it on the github.
As part as some refactor/merging from last month (where I have merged bits from the Nav branch), you can use this which is exposed in imgui_internal.h:

ImGui::PushItemFlag(ImGuiItemFlags_SelectableDontClosePopup, true);
ImGui::PopItemFlag()

I envision it will be moved to imgui.h at some point, perhaps with some renaming/tidying up of some of the available flags. e.g Here the naming Selectable may be confusing (MenuItem is a Selectable).

The reason it's not exposed directly by MenuItem() is because that API doesn't have room for flags at the moment. I think I could however add flags to BeginMenu() soonish, as menu-wide flags will be definitively used for other things. e.g.
BeginMenu(const char* label, bool enabled = true, ImGuiMenuFlags flags = 0)
w/ ImGuiMenuFlags_MenuItemDontCloseMenu

[ocornut]

It is now possible using public API:

ImGui::PushItemFlag(ImGuiItemFlags_AutoClosePopups, false);
ImGui::MenuItem(....);
ImGui::PopItemFlags();