button 위젯 추가 및 click event 추가

button 추가 및 click 시 button label 변경하는 예제

  #include <gtk/gtk.h> void destroy(GtkWidget *window, gpointer data) { printf("destroy function is called\n"); gtk_main_quit(); } gboolean delete_event_handler(GtkWidget *window, GdkEvent *event, gpointer data) { printf("delete event handler is called\n"); return FALSE; /* return FALSE --> destroy */ } GtkWidget *button = NULL; gboolean button_click_handler(GtkWidget *window, GdkEvent *event, gpointer data) { if(NULL != button) gtk_button_set_label(GTK_BUTTON(button), "Button Clicked"); return FALSE; } int main(int argc, char *argv[]) { GtkWidget *window = NULL; gtk_init(&argc, &argv); window = gtk_window_new(GTK_WINDOW_TOPLEVEL); gtk_window_set_title(GTK_WINDOW(window), "Hello World"); gtk_container_set_border_width(GTK_CONTAINER (window), 10); gtk_widget_set_size_request(window, 200, 100); g_signal_connect(G_OBJECT(window), "destroy", G_CALLBACK(destroy), NULL); g_signal_connect(G_OBJECT(window), "delete_event", G_CALLBACK(delete_event_handler), NULL); button = gtk_button_new_with_label("Click Me"); g_signal_connect(G_OBJECT(button), "clicked", G_CALLBACK(button_click_handler), NULL); gtk_container_add(GTK_CONTAINER (window), button); gtk_widget_show_all(window); gtk_main(); return 0; }