#include <gtk/gtk.h>
#include<string.h>
#include<stdio.h>
#include <stdbool.h>
#include<stdlib.h>
static GtkWidget *textlabel_question_no;
static GtkWidget *textlabel_answer1;
static GtkWidget *textlabel_answer2;
static GtkWidget *textlabel_answer3;
static GtkWidget *textlabel_answer4;
static GtkWidget *textlabel_question;
static GtkWidget *textlabel_timer;
static GtkWidget *textlabel_timeleft;
static GtkWidget *button_next;
static GtkWidget *window2;
static GtkWidget *window31;
static GThread *thread;
void show_info(GtkWidget *window2);
// thread for timer
static gpointer thread_Func(gpointer data)
{
// gdk_threads_enter();
int min=0,sec;//min=29
while(min > -1 )
{
sec = 10;
while(sec>=0)
{
sleep(1);
char* timer_text=malloc(sizeof(char)*40);
if(sec>9)
{
sprintf(timer_text,"%d : %d",min,sec);
}
else
{
sprintf(timer_text,"%d : 0%d",min,sec);
}
gtk_label_set_text(GTK_LABEL(textlabel_timer),timer_text);
sec--;
}
min--;
}
// gdk_threads_leave();
// gdk_threads_enter();
g_printf("in show_info\n");
GtkWidget *dialog;
dialog = gtk_message_dialog_new(GTK_WINDOW(window2),
GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_INFO,
GTK_BUTTONS_OK,
"Your Time is UP !!!\n Lets see the Result & Statistics...","title");
gtk_window_set_title(GTK_WINDOW(dialog), "Time Finished");
gint result=gtk_dialog_run(GTK_DIALOG(dialog));
switch(result)
{
case GTK_RESPONSE_OK:
gtk_widget_hide(window2);
g_printf("in show_info\n");
system("./result &");
//gtk_main_quit();
break;
}
//sleep(10);
gtk_widget_destroy(dialog);
/*
window31 = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_position(GTK_WINDOW(window31), GTK_WIN_POS_CENTER);
gtk_window_set_title(GTK_WINDOW(window31), "Examination Panel");
gtk_container_set_border_width(GTK_CONTAINER(window31),12);
gtk_window_set_resizable(GTK_WINDOW(window31),FALSE);
gtk_widget_set_size_request(window31,300,150);
gtk_widget_show_all(window31);
//sleep(10);
gdk_threads_leave();*/
return NULL;
}
static void next_question_label_change(GtkWidget *button_next,gpointer data)
{
g_printf("in button_next\n");
static int question_value=2;
char *question_label = malloc(sizeof(char)*50);
sprintf(question_label,"Question %d of 10.",question_value);
gtk_label_set_text(GTK_LABEL(textlabel_question_no),question_label);
if(question_value<10)
question_value++;
}
//For Submit button dialog box
static void test_submit_window(GtkWidget *button_next,GtkWidget *window2)
{
GtkWidget *dialog;
dialog = gtk_message_dialog_new(GTK_WINDOW(window2),
GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_QUESTION,
GTK_BUTTONS_YES_NO,
"Are you sure to Submit the Test?");
gtk_window_set_title(GTK_WINDOW(dialog), "Submit Test Confirmation");
gint result = gtk_dialog_run (GTK_DIALOG (dialog));
switch(result)
{
case GTK_RESPONSE_YES:
system("./result &");
gtk_widget_hide(window2);
break;
case GTK_RESPONSE_NO:
break;
}
gtk_widget_destroy(dialog);
}
int
main (int argc,char *argv[])
{
GTimer *g_time;
GtkWidget *fixed;
GtkWidget *radio1,*radio2,*radio3,*radio4;
GtkWidget *button_submit;
GtkWidget *textlabel_title;
GtkWidget *image;
GtkWidget *image2;
GError *error = NULL;
GdkPixbuf *pixbuf;
GtkWidget *scrolled_window;
/* Secure glib */
if( ! g_thread_supported() )
g_thread_init( NULL );
//g_threads_init(NULL);
//g_thread_init(NULL);
/* Secure gtk */
gdk_threads_init();
/* Obtain gtk's global lock */
// intialiazation
gtk_init (&argc, &argv);
//window attributes position,size,title
window2 = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_position(GTK_WINDOW(window2), GTK_WIN_POS_CENTER);
gtk_window_set_title(GTK_WINDOW(window2), "Examination Panel");
gtk_container_set_border_width(GTK_CONTAINER(window2),12);
gtk_window_set_resizable(GTK_WINDOW(window2),FALSE);
gtk_widget_set_size_request(window2,800,450);
button_next = gtk_button_new_with_label("Next>>");
button_submit = gtk_button_new_with_label("Submit");
textlabel_title = gtk_label_new("-> TECHNICAL EXAM <-");
textlabel_question = gtk_label_new("question placed here");
textlabel_question_no = gtk_label_new(" Question 1 of 10.");
textlabel_answer1 = gtk_label_new(" answer 1");
textlabel_answer2 = gtk_label_new(" answer 2");
textlabel_answer3 = gtk_label_new(" answer 3");
textlabel_answer4 = gtk_label_new(" answer 4");
textlabel_timer = gtk_label_new("30:00");
textlabel_timeleft = gtk_label_new("Time Left :");
//radio button for option
radio1 = gtk_radio_button_new_with_label (NULL , "A. ");
radio2 = gtk_radio_button_new_with_label_from_widget
(GTK_RADIO_BUTTON(radio1),"B.");
radio3 = gtk_radio_button_new_with_label_from_widget
(GTK_RADIO_BUTTON (radio1),"C. ");
radio4 = gtk_radio_button_new_with_label_from_widget
(GTK_RADIO_BUTTON (radio1),"D. ");
// For image
pixbuf = gdk_pixbuf_new_from_file_at_size
("/home/trilok/trantorlogo.png", 100, 100, &error);
if(!pixbuf)
{
g_print ("Error: %s\n",error->message);
g_error_free (error);
/* Handle error here */
}
image = gtk_image_new_from_pixbuf(pixbuf);
image2 = gtk_image_new_from_pixbuf(pixbuf);
g_object_unref (pixbuf);
//For Signals
g_signal_connect (window2, "destroy", G_CALLBACK (gtk_main_quit), NULL);
g_signal_connect (button_next,"clicked",G_CALLBACK
(next_question_label_change), NULL);
g_signal_connect (button_submit,"clicked",G_CALLBACK(test_submit_window),window2);
//timer
// pthread_create(&pth,NULL,threadFunc,"foo");
/* Create new thread */
thread = g_thread_create( thread_Func,NULL,
FALSE,&error);
if( ! thread )
{
g_print( "Error: %s\n", error->message );
return( -1 );
}
// For scrolled window
scrolled_window = gtk_scrolled_window_new (NULL, NULL);
gtk_container_set_border_width (GTK_CONTAINER (scrolled_window),10);
gtk_scrolled_window_set_policy
(GTK_SCROLLED_WINDOW
(scrolled_window)
,GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
//fixed
fixed = gtk_fixed_new();
gtk_container_add(GTK_CONTAINER(window2), fixed);
gtk_widget_show(fixed);
gtk_scrolled_window_add_with_viewport
(GTK_SCROLLED_WINDOW(scrolled_window),textlabel_question);
gtk_widget_set_size_request(scrolled_window,580,150);
//scrolled border
gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_window),
GTK_SHADOW_IN);
gtk_scrolled_window_set_placement (GTK_SCROLLED_WINDOW (scrolled_window),
GTK_CORNER_TOP_LEFT);
gtk_fixed_put(GTK_FIXED(fixed), scrolled_window, 70, 110);
gtk_fixed_put(GTK_FIXED(fixed), image, 0, 0);
gtk_fixed_put(GTK_FIXED(fixed), image2, 0, 510);
gtk_fixed_put(GTK_FIXED(fixed), textlabel_title, 300, 20);
gtk_fixed_put(GTK_FIXED(fixed), textlabel_timeleft, 610, 70);
gtk_fixed_put(GTK_FIXED(fixed), textlabel_timer, 690, 70);
gtk_fixed_put(GTK_FIXED(fixed), textlabel_question_no, 65, 70);
gtk_fixed_put(GTK_FIXED(fixed), textlabel_answer1,170, 300);
gtk_fixed_put(GTK_FIXED(fixed), textlabel_answer2,170, 350);
gtk_fixed_put(GTK_FIXED(fixed), textlabel_answer3,170, 400);
gtk_fixed_put(GTK_FIXED(fixed), textlabel_answer4,170, 450);
gtk_fixed_put(GTK_FIXED(fixed), radio1, 100,300);
gtk_fixed_put(GTK_FIXED(fixed), radio2, 100,350);
gtk_fixed_put(GTK_FIXED(fixed), radio3, 100,400);
gtk_fixed_put(GTK_FIXED(fixed), radio4, 100,450);
gtk_fixed_put(GTK_FIXED(fixed), button_next,620, 500);
gtk_fixed_put(GTK_FIXED(fixed), button_submit,690, 500);
gtk_widget_show_all(window2);
//gdk_threads_enter();
GDK_THREADS_ENTER();
gtk_main();
/* Release gtk's global lock */
//gdk_threads_leave();
GDK_THREADS_LEAVE();
return 0;
}
Actually i am making an timer on exam simulator . My timer is working correctly but the problem is this i have to open an dialog box when timer goes to 0:00. her i am have implemented the threads to make an timer. Problem is this when timer goes to 0:00 then i segmentation fault. the gdk thread is not allowing any call to gtk widget.
Thanks for the help in advance. Some rectify the above code an make it happen will be appreciated
