Re: Help, how write a program to conect a server...

[ZB <zb197 yahoo com>]

It is crashing because you are not handling memory
correctly. 
Firstly, look at this login function

> void login(GtkWidget *widget, gpointer data)
> {
> gchar tmplog;
>
> tmplog=gtk_entry_get_text(GTK_ENTRY(data));
> strcpy(host.user,tmplog);
> }

gtk_entry_get_text returns a gchar* not a gchar.
secondly, gtk_entry_get_text is deprecated and you
should use gtk_editable_get_chars
Also, you are passing a gpointer into a GTK_ENTRY
field? why not create a GtkWidget, and set that to a
GTK_ENTRY with a lookup_widget function and then pass
than in.

Your function should read

void login(GtkWidget *widget, gpointer data)
{
  gchar* tmplog;

  tmplog=gtk_editable_get_chars(GTK_EDITABLE(widget),
0, -1);
  strcpy(host.user,tmplog);
  g_free(tmplog);
}

All the functions need to be fixed like the above one.
Secondly, where are allocating memory for your host
structure? 
Zev.

--- javiercmx correo unam mx wrote:
> Hello 
>
> excuse me, I write a program which is connected a
> server, I was seeing his code
> of gftp, but I do not understand some things.
>
> I need to know, how to get the text in GtkEntry and
> GtkCombo for example the
> code is:
>
> include <gtk/gtk.h>
>
> ....
>
> struct register
> {
> char *user;
> char *clav;
> char *srv;
> } host;
> ...
>
> label=gtk_label_new("User");
> gtk_box_pack_start(GTK_BOX(box),label,TRUE,8,0)
> gtk_widget_show(label);
>
> login=gtk_entry_new();
> gtk_widget_set_usize(login,155,-1);
> gtk_signal_connect(GTK_OBJECT(login),"activate",
>                    GTK_SIGNAL_FUNC(login), login)
>
> label=gtk_label_new("Passwd");
> gtk_box_pack_start(GTK_BOX(box),label,TRUE,10,0)
> gtk_widget_show(label);
>
> passwd=gtk_entry_new();
> gtk_widget_set_usize(login,155,-1);
> gtk_signal_connect(GTK_OBJECT(passwd),"activate",
>                    GTK_SIGNAL_FUNC(passwd), passwd)
>
> label=gtk_label_new("Server");
> gtk_box_pack_start(GTK_BOX(box),label,TRUE,10,0)
> gtk_widget_show(label);
>
> server=gtk_combo_new();
> gtk_widget_set_usize(170,-1);
gtk_signal_connect(GTK_OBJECT(GTK_COMBO(server)->entry,"activate",
>                    GTK_SIGNAL_FUNC,server)
> gtk_combo_disable_activate(GTK_COMBO(server));
> gtk_box_pack_start(GTK_BOX(box),server,TRUE,10,0)
>
> this is a widget with User:, Passwd, and server.
>
> User and passwd use a GtkEntry
> server use a GtkCombo
>
> the functions that they are called are:
>
> for User is
>
> void login(GtkWidget *widget, gpointer data)
> {
> gchar tmplog;
>
> tmplog=gtk_entry_get_text(GTK_ENTRY(data));
> strcpy(host.user,tmplog);
> }
>
> for Passwd is
>
> void passwd(GtkWidget *widget, gpointer data)
> {
> gchar tmppass;
>
> tmppass=gtk_entry_get_text(GTK_ENTRY(data));
> strcpy(host.clav,tmppass);
> }
>
> for server is
>
> void server(GtkWidget *widget, gpointer data)
> {
> gchar tmpsrv;
>
> tmpsrv=gtk_entry_get_text(GTK_ENTRY(data));
> strcpy(host.srv,tmpsrv);
> }
>
> ......
>
> when press de button conect call de function
> call_host
>
> the function is 
>
> void call_host(GtkWidget *widget, gpointer data)
> {
> ServerConnect();
> }
>
> In the function ServerConnect write the code that it
> makes the connection to the
> server. this function 
>
> int ServerConect(void);
> {
> ...
> }
>
> My problem is when write de user, passwd and server
> in the widget and press the
> button connect, appears the following message:
>
> Illegal instruction(core dumped)
>  
> not where this my error or of which another form can
> be done
>
> any idea?
>
> THANKS
>
>
>
> -------------------------------------------------
> Obtén tu correo en www.correo.unam.mx
> UNAMonos Comunicándonos
>
> _______________________________________________
> gtk-app-devel-list mailing list
> gtk-app-devel-list gnome org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list


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