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POgtk - close window form with button in C
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  1. POgtk - close window form with button in C
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    copied!<p>I have a main window with a menu wich opens another window. This secondary window has a button Close. That button has the signal clicked connected. My problem is that I don't know how to close/destroy that parent window. I have tried with gtk_widget_destroy, but an error appears because window is not a widget .... I haven't found any function to destroy the parent window ....</p> <p>Can anyone show me the way, please? Thanks in advance.</p> <p><em>-----------------------------------------------</em></p> <p>Ok. I post a piece of code. When I execute the program I click in "Open window" button. A new window is openned with one button "Close". If I click in "Close" button I get next error in terminal: (Windows:13801): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed</p> <p>The code is:</p> <pre><code>#include &lt;stdlib.h&gt; #include &lt;gtk/gtk.h&gt; #include &lt;gdk/gdkkeysyms.h&gt; void open_window(GtkWidget *widget, gpointer window); void close_window(GtkWidget *widget, gpointer window); int main( int argc, char *argv[]) { GtkWidget *window; GtkWidget *fixed; GtkWidget *button; gtk_init(&amp;argc, &amp;argv); window = gtk_window_new(GTK_WINDOW_TOPLEVEL); gtk_window_set_title(GTK_WINDOW(window), "Windows"); gtk_window_set_default_size(GTK_WINDOW(window), 230, 150); gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER); fixed = gtk_fixed_new(); gtk_container_add(GTK_CONTAINER(window), fixed); button = gtk_button_new_with_label("Open window"); gtk_fixed_put(GTK_FIXED(fixed), button, 50, 50); gtk_widget_set_size_request(button, 80, 35); g_signal_connect(G_OBJECT(button), "clicked", G_CALLBACK(open_window), G_OBJECT(window)); g_signal_connect_swapped(G_OBJECT(window), "destroy", G_CALLBACK(gtk_main_quit), NULL); gtk_widget_show_all(window); gtk_main(); return 0; } void open_window(GtkWidget *widget, gpointer window) { GtkBuilder *builder; GtkWidget *secondWindow = NULL; builder = gtk_builder_new (); gtk_builder_add_from_file (builder, "secondWindow.glade", NULL); secondWindow = GTK_WIDGET (gtk_builder_get_object (builder, "secondWindow")); gtk_builder_connect_signals (builder, NULL); g_object_unref (G_OBJECT (builder)); gtk_window_set_modal(GTK_WINDOW(secondWindow), TRUE); gtk_widget_show_all(secondWindow); } void close_window(GtkWidget *widget, gpointer window) { gtk_widget_destroy(GTK_WIDGET(window)); } </code></pre> <p>In file "secondWindow.glade" is defined a window, a table and a button placed in the middle cell of the table. Also, it is defined a handle for the "clicked" event button named "close_window".</p> <p>Link to glade file if anyone wants to execute it: <a href="https://sites.google.com/site/marvalsiteimages/secondWindow.glade" rel="nofollow">https://sites.google.com/site/marvalsiteimages/secondWindow.glade</a></p> <p>I hope this could help you to understand my problem. Thansk.</p> <p><em>-------------------------------------------------</em></p> <p>Final code based on the response:</p> <pre><code>void open_window(GtkWidget *widget, gpointer window) { GtkBuilder *builder; GtkWidget *secondWindow = NULL; GtkWidget *closeButton = NULL; builder = gtk_builder_new (); gtk_builder_add_from_file (builder, "secondWindow.glade", NULL); secondWindow = GTK_WIDGET (gtk_builder_get_object (builder, "secondWindow")); closeButton = GTK_WIDGET (gtk_builder_get_object (builder, "closeWindowButton")); g_signal_connect (G_OBJECT (closeButton), "clicked", G_CALLBACK (close_window), G_OBJECT (secondWindow)); // here is the magic: the callback will get the window to close g_object_unref (G_OBJECT (builder)); gtk_window_set_modal(GTK_WINDOW(secondWindow), TRUE); gtk_widget_show_all(secondWindow); } </code></pre>
 

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