Re: [gtkmm] Access CheckMenuItem after inserted into menu?

[D Bently <dbently bigpond com>]

Thanks Bryan, a bit of playing around and that worked. What I have done 
is create an array:
    struct {
        CheckMenuItem *item;
        const char *str;
    } data[MAX_CITEMS];

At run time I open the configuration file, and load in the items, 
filling in the array as you have suggested. Then when one of the items 
is changed I simply go through the array, and can identify exactly which 
items are currently set. It is actually a better solution than I 
expected to find.

Thanks.

Bryan Forbes wrote:

> I had this problem trying to implement a message in a status bar when the user moves
> his/her mouse over the menu item (yeah, I reimplemented something from libgnomeuimm... oh
> well), but I found a solution that I've adapted to your problem:
>
> 1. Make some pointers to Gtk::CheckMenuItem (the number depends on how many
> CheckMenuElems you have and/or how many you want to access.  For our example, we'll use
> m_abc, m_def, and m_ghi (remember, this is in your class):
>
> Gtk::CheckMenuItem *m_abc, *m_def, *m_ghi;
>
> 2. After push_back'ing the CheckMenuElems into the menu, assign one of your pointers the
> address (I think) of the back method of menulist. Here's an example using your code:
>
>     ClassTest::ClassTest() : somelabel("fred") {
>       /* Construct the popup menu */
>       Menu::MenuList &menulist = popup.items();
>           menulist.push_back(Menu_Helpers::CheckMenuElem("abc",
>               SigC::slot(*this, &ClassTest::ChangeLabel)));
>           m_abc = &menulist.back();
>           menulist.push_back(Menu_Helpers::CheckMenuElem("def",
>               SigC::slot(*this, &ClassTest::ChangeLabel)));
>           m_def = &menulist.back();
>           menulist.push_back(Menu_Helpers::CheckMenuElem("ghi",
>               SigC::slot(*this, &ClassTest::ChangeLabel)));
>           m_ghi = &menulist.back();
>           /* ... could be any number of elements added ... */
>       popup.accelerate(*this);
>       ...
>
> 3. Now access the check menu items by dereferencing them (->)
>
> m_abc->toggled();
>
> Disclaimer: I've only used this to check if the menu item (Gtk::MenuItem) has the mouse
> over it, so this should work (given my limited experience) with Gtk::CheckMenuItem. I
> hope this helps.  If I'm wrong, someone please correct me :).
>
> -Bryan

> <original message snipped>

>

--------------------------------------------------------------------------
Damian (Winter)