Re: tooltips for each cell of treeview?

[Taura Milana <learfox furry ao net>]

On 2002.04.03 20:00 Kang Jeong-Hee wrote:
> What I wanna do is like that of Windows Explorer do for long filename.
> if long filename cutoff, full length come up as tooltip of the cell.
> I've wonder how but can't.
> Is there some way?

It's been a while, but I had to do something similar for
Vertex's primitives palette.  It had objects but with no
labels at all and relied on tooltips for each object.

What I did was watch for the motion_notify_event and updated
the tooltip for the GtkDrawable (the main widget for
the primitives palette).  Since you are using a GtkCList
or similar, it should work just fine.

First you need to update the tooltip's message whenever the
motion_notify_event occures over the GtkCList and changes
to a different cell.  When that occures, update the
tooltip message and then force it to reshow by calling
a function similar to:

void GUIShowTipsNow(GtkWidget *w)
{
        GdkEventCrossing e;
        GdkWindow *window;


        if((w == NULL) || !gui_tooltips_state)
            return;

        if(GTK_WIDGET_NO_WINDOW(w))
            return;
        else
            window = w->window;
        if(window == NULL)
            return;

        /* Send a fake enter notify event to make widget think
         * its time to show the tooltips. Note that the widget
         * should be watching for the enter_notify_event.
         */
        e.type = GDK_ENTER_NOTIFY;
        e.window = window;
        e.send_event = 1;               /* True if we're sending event. */
        e.subwindow = window;
        e.time = GDK_CURRENT_TIME;
        e.x = 0.0;
        e.y = 0.0;
        e.x_root = 0.0;
        e.y_root = 0.0;
        e.mode = GDK_CROSSING_NORMAL;
        e.detail = GDK_NOTIFY_ANCESTOR;
        e.focus = TRUE;                 /* Focus. */
        e.state = 0;                    /* Key modifiers. */
        gdk_event_put((GdkEvent *)&e);
}


This is the function I use and it seems to work, pass
the GtkCList as the widget.


--
Sincerely,                  ,"-_                         \|/
-Capt. Taura M.             ,   O=__                    --X--
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                  http://furry.ao.net/~learfox/