GTK : wait for user input - c

Question

I am using GTK in C and I would like to make a form in order to collect input from user. I use GTK_ENTRY in order to collect user's input.
Unfortunately I don't know how I can put the execution is "pause" in order to wait that user enters its input and resume it as soon as the input is ready.
Can you help me, please?
Thanks

Answer 1

#include <gtk/gtk.h>
static void on_button_clicked(GtkButton *button,gpointer data);
static void on_entry_activate(GtkEntry *entry,gpointer data);
int main(int argc, char *argv[])
{
GtkWidget *window;
GtkWidget *entry;
GtkWidget *button;
GtkWidget *hbox;
gtk_init(&argc,&argv);
window=gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_title(GTK_WINDOW(window),"entry");
gtk_window_set_position(GTK_WINDOW(window),GTK_WIN_POS_CENTER);
gtk_container_set_border_width(GTK_CONTAINER(window),5);
hbox=gtk_box_new(GTK_ORIENTATION_HORIZONTAL,5);
gtk_container_add(GTK_CONTAINER(window),hbox);
entry=gtk_entry_new();
gtk_box_pack_start(GTK_BOX(hbox),entry,TRUE,TRUE,5);
button=gtk_button_new_with_label("Ok");
gtk_box_pack_start(GTK_BOX(hbox),button,FALSE,FALSE,0);
g_signal_connect(G_OBJECT(window),"destroy",
G_CALLBACK(gtk_main_quit),NULL);
g_signal_connect(G_OBJECT(button),"clicked",
G_CALLBACK(on_button_clicked),entry);
g_signal_connect(G_OBJECT(entry),"activate",/* when you press ENTER */
G_CALLBACK(on_entry_activate),NULL);
gtk_widget_show_all(window);
gtk_main();
return 0;
}
static void on_button_clicked(GtkButton *button,gpointer data)
{
GtkWidget *entry=(GtkWidget *)data;
GtkWidget *dialog;
gchar buff[1024];
g_snprintf(buff,1024,"You input '%s' !",
gtk_entry_get_text(GTK_ENTRY(entry)));
dialog=gtk_message_dialog_new(NULL,GTK_DIALOG_MODAL,
GTK_MESSAGE_INFO,GTK_BUTTONS_OK,"%s",buff);
gtk_dialog_run(GTK_DIALOG(dialog));
gtk_widget_destroy(dialog);
gtk_entry_set_text(GTK_ENTRY(entry),"");
}
static void on_entry_activate(GtkEntry *entry,gpointer data)
{
g_printf("%s\n",gtk_entry_get_text(GTK_ENTRY(entry)));
}
This example is very simple. Input is ready when user press ENTER in entry or click OK BUTTON
The code is very easy to read, i think. Good luck!