I realize that I am very new at using GTK+, but what is the point of having a function that accepts some parameters if I cannot pass any variables to that function. > I did as you suggested and this is the result of the modifications: > ----snip----- > gboolean MessageInfo(GtkButton* btn, char* msg){...} > > g_signal_connect(GTK_OBJECT(btnCreateAccount),"clicked", /*This line > causes the error*/ > GTK_SIGNAL_FUNC(MessageInfo(btnCreateAccount, > strMsg.c_str()) ), NULL); > ----eos---- > > But for some reason I get an error message that reads: > 50: error: cannot convert `GtkWidget*' to `GtkButton*' for argument `1' to > `gboolean > ======= > > I am really lost here, can anybody give me a hand on this? > > TIA > > >> On Wed, Jul 06, 2005 at 10:58:59PM +0200, Jean Bréfort wrote: >>> That is, the first parameter of your callback is the button which was >>> clicked, unless you use g_signal_connect_swapped. >>> SQo you have two solutions, either, you change the signayure of >>> MessageInfo: >>> gboolean MessageInfo(GtkButoon* btn, std::string& msg){...} >>> or you use g_signal_connect_swapped: >>> g_signal_connect_swapped(GTK_OBJECT(btnCreateAccount), "clicked", >>> GTK_SIGNAL_FUNC(MessageInfo), NULL); >> >> Note however, GObject callbacks don't mix very logically >> with C++ pass-by-reference argument style. >> >> You can't pass a std::string variable as the last argument of >> g_signal_connect() as you would in direct function call, you >> have to pass a pointer, and once you do that, it doesn't >> make sense to declare >> >> MessageInfo(std::string &msg) >> >> instead of >> >> MessageInfo(std::string *msg) >> >> Yeti >> >> >> -- >> A: Because it messes up the order in which people normally read text. >> Q: Why is top-posting such a bad thing? >> A: Top-posting. >> Q: What is the most annoying thing on usenet and in e-mail? >> > > _______________________________________________ > > gtk-list@xxxxxxxxx > http://mail.gnome.org/mailman/listinfo/gtk-list > _______________________________________________ gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list