Re: gtk_widget_set_sensitive and mouse pointer

[John Boncek <jboncek Hunter COM>]

Eric Masson @ Savant Protection wrote:
> Hi All,
>
> I had a small problem that was bugging me for a while, and I figured I'd 
> share the results of my findings.
>
> The problem was this:
> You have several widgets inside of a container and you call 
> gtk_widget_set_sensitive with false to gray out the container + all 
> children.  If you leave your mouse positioned over a button inside that 
> container, and call gtk_widget_set_sensitive with true, you will no 
> longer be able to click on that button.
>
> The explanation is simple, the button widget has not received an enter 
> signal after becoming sensitive.
>
> To fix this, do the following after making the widget sensitive:
> gint x,y;
> GdkWindow *windowUnderMouse=gdk_window_at_pointer(&x,&y);
> if(windowUnderMouse){
>     GdkEventCrossing e;
>     e.type=GDK_ENTER_NOTIFY;
>     e.window=windowUnderMouse;
>     e.send_event=1;
>     e.subwindow=0;
>     e.time=GDK_CURRENT_TIME;
>     e.x=0;
>     e.y=0;
>     e.x_root=0;
>     e.y_root=0;
>     e.mode=GDK_CROSSING_NORMAL;
>     e.detail=GDK_NOTIFY_UNKNOWN;
>     e.focus=true;
>     e.state=0;
>     gdk_event_put((GdkEvent *)&e);
> }

That big chunk of code is not required.  Just hide, then show, the widget
that was set sensitive (noted as a work-around in the bug report).
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