gtk callback problem in C++
I have a callback function which I want to pass two Entrys to a read the text from the entry boxes. It appears the convention is to pass the data to the callback function as a gpointer. I am attempting to then cast this back to a struct which holds the two Entries. Here is the relevant code
Code:
class ChatWindow
{
struct connectEntryStruct
{
GtkEntry *ipEntry;
GtkEntry *portEntry;
};
public:
.
.
void connect(GtkWidget *widget, gpointer connectEntry);
static void staticWrapperConnect(void *ptfncHello, GtkWidget *widget, gpointer connectEntry);
.
.
}
Code:
GtkWidget * ChatWindow::connectLayOut(GtkWidget * window)
{
.
.
.
GtkWidget *ipEntry = gtk_entry_new();
GtkWidget *portEntry = gtk_entry_new();
.
.
connectEntryStruct * connectEntry = new connectEntryStruct;
connectEntry->ipEntry = GTK_ENTRY(ipEntry);
connectEntry->portEntry = GTK_ENTRY(portEntry);
.
g_signal_connect (G_OBJECT (connectButton), "clicked",
G_CALLBACK (staticWrapperConnect), connectEntry);
}
Code:
void ChatWindow::connect( GtkWidget *widget, gpointer connectData)
{
connectEntryStruct * connectEntry = reinterpret_cast<connectEntryStruct*>(connectData);
const gchar * ipAdress = gtk_entry_get_text(connectEntry->ipEntry);
const gchar * portNumber = gtk_entry_get_text(connectEntry->portEntry);
g_print ("ipAdress\n");
g_print ("portAdress\n");
}
void ChatWindow::staticWrapperConnect(void *ptfncHello, GtkWidget *widget, gpointer connectEntry)
{
ChatWindow *chatHello = (ChatWindow*) ptfncHello; //cast to member function
chatHello->connect(widget, connectEntry);
}
here are the errors
(gtkwindow:13584): Gtk-CRITICAL **: file gtkentry.c: line 3871 (gtk_entry_get_text): assertion `GTK_IS_ENTRY (entry)' failed
/bin/sh: line 1: 13584 Segmentation fault ./gtkwindow
Press Enter to continue!
Is it possible to do this somehow so that I can pass my Entries without making them global.
