Mr.Kumar
October 6th, 2015, 07:13 AM
I was trying to switch values from one text entry to another but I am getting a segfault I have looked and didn't seem to find how to resolve it. I am new to gtk/glade so this might be very silly error which I am not able figure out. Any help is appreciated.
Code:
includes/asitor.h:
include <stdio.h>
#include <gtk/gtk.h>
#include <stdlib.h>
#include <string.h>
main.c:
#include "includes/asitor.h"
typedef struct loginer {
GtkEntry *entry_uname; //username textbox
GtkEntry *entry_upass; //pasword textbox
}txtboxes;
G_MODULE_EXPORT void on_login_destroy ()
{
gtk_main_quit ();
}
G_MODULE_EXPORT void on_login_btn_clicked(GtkButton *button, txtboxes* gtexters){
char luemail[255];
char lupass[255];
//getting text from the text boxes
const gchar *emailer = gtk_entry_get_text(gtexters->entry_uname);
const gchar *passer = gtk_entry_get_text(gtexters->entry_upass);
// getting text from text boxes (input)
strcpy(luemail, emailer);
strcpy(lupass, passer);
//reversing and setting new text (output)
gtk_entry_set_text(gtexters->entry_uname, lupass);
gtk_entry_set_text(gtexters->entry_upass, luemail);
}
int main(int argc, char **argv){
GtkBuilder *builder;
GtkWidget *window;
txtboxes gtexters;
GError *error = NULL;
/* Init GTK+ */
gtk_init( &argc, &argv );
/* Create new GtkBuilder object */
builder = gtk_builder_new();
/* Load UI from file. If error occurs, report it and quit application.
Replace "gui/login.glade" with your saved project with your startup form.*/
if( ! gtk_builder_add_from_file( builder, "gui/login.glade", &error )){
g_warning( "%s", error->message );
g_free( error );
return( 1 );
}
/* Get main window pointer from UI */
window = GTK_WIDGET( gtk_builder_get_object( builder, "login" ) );
//connecting each structure member to it appropriate gtkwidget
gtexters.entry_uname = GTK_ENTRY(gtk_builder_get_object(builder, "entry_uname" ));
gtexters.entry_upass = GTK_ENTRY(gtk_builder_get_object(builder, "entry_upass" ));
/* Connect signals with appropriate handlers so that handlers could be called when button is clicked */
gtk_builder_connect_signals( builder, >exters);
/* Destroy builder, since we don't need it anymore */
g_object_unref( G_OBJECT( builder ) );
/* Show window. All other widgets are automatically shown by GtkBuilder */
gtk_widget_show( window );
/* Start main loop */
gtk_main();
return 0;
}
glade file:
<?xml version="1.0" encoding="UTF-8"?>
<interface>
<requires lib="gtk+" version="2.24"/>
<!-- interface-naming-policy project-wide -->
<object class="GtkWindow" id="login">
<property name="can_focus">False</property>
<property name="border_width">46</property>
<property name="title" translatable="yes">Asitor Login</property>
<property name="default_width">440</property>
<property name="default_height">250</property>
<signal name="destroy" handler="gtk_main_quit" swapped="no"/>
<child>
<object class="GtkVBox" id="vbox2">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="spacing">15</property>
<child>
<object class="GtkHBox" id="hbox1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkLabel" id="uname">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">User Email:</property>
<property name="ellipsize">start</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkEntry" id="entry_umail">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="tooltip_text" translatable="yes">Enter your username here</property>
<property name="invisible_char">●</property>
<property name="primary_icon_activatable">False</property>
<property name="secondary_icon_activatable">False</property>
<property name="primary_icon_sensitive">True</property>
<property name="secondary_icon_sensitive">True</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkHBox" id="hbox2">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkLabel" id="upass">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="xalign">0.47999998927116394</property>
<property name="label" translatable="yes">Password:</property>
<property name="ellipsize">start</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkEntry" id="entry_upass">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="tooltip_text" translatable="yes">Enter your password here</property>
<property name="invisible_char">●</property>
<property name="primary_icon_activatable">False</property>
<property name="secondary_icon_activatable">False</property>
<property name="primary_icon_sensitive">True</property>
<property name="secondary_icon_sensitive">True</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
<child>
<object class="GtkHBox" id="hbox3">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="spacing">73</property>
<child>
<object class="GtkButton" id="login_btn">
<property name="label" translatable="yes">Login</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="tooltip_text" translatable="yes">Press to login to Asitor</property>
<property name="use_action_appearance">False</property>
<signal name="clicked" handler="on_login_btn_clicked" swapped="no"/>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="padding">4</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkButton" id="cancle_btn">
<property name="label" translatable="yes">Exit</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="tooltip_text" translatable="yes">Press to exit from Asitor</property>
<property name="use_action_appearance">False</property>
<signal name="clicked" handler="gtk_main_quit" swapped="no"/>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="padding">15</property>
<property name="position">2</property>
</packing>
</child>
</object>
</child>
</object>
</interface>
this is the error I am getting:
(asitor:30027): Gtk-CRITICAL **: IA__gtk_entry_get_text: assertion 'GTK_IS_ENTRY (entry)' failed
Segmentation fault
Code:
includes/asitor.h:
include <stdio.h>
#include <gtk/gtk.h>
#include <stdlib.h>
#include <string.h>
main.c:
#include "includes/asitor.h"
typedef struct loginer {
GtkEntry *entry_uname; //username textbox
GtkEntry *entry_upass; //pasword textbox
}txtboxes;
G_MODULE_EXPORT void on_login_destroy ()
{
gtk_main_quit ();
}
G_MODULE_EXPORT void on_login_btn_clicked(GtkButton *button, txtboxes* gtexters){
char luemail[255];
char lupass[255];
//getting text from the text boxes
const gchar *emailer = gtk_entry_get_text(gtexters->entry_uname);
const gchar *passer = gtk_entry_get_text(gtexters->entry_upass);
// getting text from text boxes (input)
strcpy(luemail, emailer);
strcpy(lupass, passer);
//reversing and setting new text (output)
gtk_entry_set_text(gtexters->entry_uname, lupass);
gtk_entry_set_text(gtexters->entry_upass, luemail);
}
int main(int argc, char **argv){
GtkBuilder *builder;
GtkWidget *window;
txtboxes gtexters;
GError *error = NULL;
/* Init GTK+ */
gtk_init( &argc, &argv );
/* Create new GtkBuilder object */
builder = gtk_builder_new();
/* Load UI from file. If error occurs, report it and quit application.
Replace "gui/login.glade" with your saved project with your startup form.*/
if( ! gtk_builder_add_from_file( builder, "gui/login.glade", &error )){
g_warning( "%s", error->message );
g_free( error );
return( 1 );
}
/* Get main window pointer from UI */
window = GTK_WIDGET( gtk_builder_get_object( builder, "login" ) );
//connecting each structure member to it appropriate gtkwidget
gtexters.entry_uname = GTK_ENTRY(gtk_builder_get_object(builder, "entry_uname" ));
gtexters.entry_upass = GTK_ENTRY(gtk_builder_get_object(builder, "entry_upass" ));
/* Connect signals with appropriate handlers so that handlers could be called when button is clicked */
gtk_builder_connect_signals( builder, >exters);
/* Destroy builder, since we don't need it anymore */
g_object_unref( G_OBJECT( builder ) );
/* Show window. All other widgets are automatically shown by GtkBuilder */
gtk_widget_show( window );
/* Start main loop */
gtk_main();
return 0;
}
glade file:
<?xml version="1.0" encoding="UTF-8"?>
<interface>
<requires lib="gtk+" version="2.24"/>
<!-- interface-naming-policy project-wide -->
<object class="GtkWindow" id="login">
<property name="can_focus">False</property>
<property name="border_width">46</property>
<property name="title" translatable="yes">Asitor Login</property>
<property name="default_width">440</property>
<property name="default_height">250</property>
<signal name="destroy" handler="gtk_main_quit" swapped="no"/>
<child>
<object class="GtkVBox" id="vbox2">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="spacing">15</property>
<child>
<object class="GtkHBox" id="hbox1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkLabel" id="uname">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">User Email:</property>
<property name="ellipsize">start</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkEntry" id="entry_umail">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="tooltip_text" translatable="yes">Enter your username here</property>
<property name="invisible_char">●</property>
<property name="primary_icon_activatable">False</property>
<property name="secondary_icon_activatable">False</property>
<property name="primary_icon_sensitive">True</property>
<property name="secondary_icon_sensitive">True</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkHBox" id="hbox2">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkLabel" id="upass">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="xalign">0.47999998927116394</property>
<property name="label" translatable="yes">Password:</property>
<property name="ellipsize">start</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkEntry" id="entry_upass">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="tooltip_text" translatable="yes">Enter your password here</property>
<property name="invisible_char">●</property>
<property name="primary_icon_activatable">False</property>
<property name="secondary_icon_activatable">False</property>
<property name="primary_icon_sensitive">True</property>
<property name="secondary_icon_sensitive">True</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
<child>
<object class="GtkHBox" id="hbox3">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="spacing">73</property>
<child>
<object class="GtkButton" id="login_btn">
<property name="label" translatable="yes">Login</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="tooltip_text" translatable="yes">Press to login to Asitor</property>
<property name="use_action_appearance">False</property>
<signal name="clicked" handler="on_login_btn_clicked" swapped="no"/>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="padding">4</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkButton" id="cancle_btn">
<property name="label" translatable="yes">Exit</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="tooltip_text" translatable="yes">Press to exit from Asitor</property>
<property name="use_action_appearance">False</property>
<signal name="clicked" handler="gtk_main_quit" swapped="no"/>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="padding">15</property>
<property name="position">2</property>
</packing>
</child>
</object>
</child>
</object>
</interface>
this is the error I am getting:
(asitor:30027): Gtk-CRITICAL **: IA__gtk_entry_get_text: assertion 'GTK_IS_ENTRY (entry)' failed
Segmentation fault