Re: pointer of functions - what a confusing things :-)

[Bob Caryl <bob fis-cal com>]

thom_schu gmx de wrote:

> Hi,
> since I was not able to get the Gtk::TreeView working under Windows (linker
> error), I decided to write my own Wrapper for a Gtk+-TreeView-Object.
> The Event-Handling of my new class MyTreeView should work just like the
> Event-Handling under Gtkmm.
> Now I do it like this.
>
> MyTreeView::MyTreeView()
> {
>  ....
>  g_signal_connect(gtk_treeview,"row-activated",CALLBACK(on_row_activated),
> this);
>  .....
> }
>
> // function to connect
> SignalRowActivated& MyTreeView::signal_row_activated()
> {
>  return row_activated_;
> }
>
> // callback-function, not a member of MyTreeView
> void on_row_activated(GtkTreeView*,GtkTreePath*,GtkTreeViewColumn*,         
>                 gpointer user_data) 
> {
>  ((MyTreeView*)user_data)->row_activated_.emit(tree_view, path);
> }
>
> The method on_row_activated is not a member-function, and this I think is
> very dirty - but I didnt find a way to give the CALLBACK() a
> member-function. Isnt there a way to do it like this :
>
> CALLBACK(&MyTreeView::on_row_activated) ?
>
> thanks in advance
>
> gizmo
>
>
>
>
>  
Use the macro G_CALLBACK.

bob

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