eg.rar_gtk_gtk实例

//thread.c #include <gtk/gtk.h> typedef struct _Ourarg Ourarg; struct _Ourarg { GtkWidget *fixed; GtkWidget *image; gint right; gint left; }; void image_go(Ourarg *arg) { gint x, y, toward; x = y = arg->left; toward = 1; for(;;) { g_usleep(1500); gdk_threads_enter(); gtk_fixed_move(GTK_FIXED(arg->fixed),arg->image, x, y); switch(toward) { case 1: x = x + 10; if( x > arg->right ) toward = 2; break; case 2: y = y + 10; if( y > arg->right ) toward = 3; break; case 3: x = x - 10; if( x < arg->left ) toward = 4; break; case 4: y = y -10; if( y < arg->left ) toward = 1; } gdk_threads_leave(); } } int main(int argc, char* argv[]) { GtkWidget *window; GtkWidget *vbox, *viewport, *button; GtkWidget *image, *fixed; Ourarg *arg; if(!g_thread_supported()) g_thread_init(NULL); gdk_threads_init(); gtk_init(&argc,&argv); window = gtk_window_new(GTK_WINDOW_TOPLEVEL); gtk_window_set_title(GTK_WINDOW(window),"线程测试"); g_signal_connect(G_OBJECT(window),"delete_event", G_CALLBACK(gtk_main_quit),NULL); gtk_container_set_border_width(GTK_CONTAINER(window),2); vbox = gtk_vbox_new(FALSE,0); gtk_container_add(GTK_CONTAINER(window),vbox); fixed = gtk_fixed_new(); gtk_widget_set_usize(fixed,340,340); viewport = gtk_viewport_new(NULL,NULL); gtk_box_pack_start(GTK_BOX(vbox),viewport,FALSE,FALSE,5); gtk_container_add(GTK_CONTAINER(viewport),fixed); image = gtk_image_new_from_file("ss.png"); gtk_fixed_put(GTK_FIXED(fixed),image,40,40); button = gtk_button_new_with_label("退出"); gtk_box_pack_start(GTK_BOX(vbox),button,FALSE,FALSE,5); g_signal_connect(G_OBJECT(button),"clicked", G_CALLBACK(gtk_main_quit),NULL); gtk_widget_show_all(window); arg = g_new(Ourarg,1); arg->fixed = fixed; arg->image = image; arg->left = 40; arg->right = 260; g_thread_create(image_go, arg, FALSE, NULL); gdk_threads_enter(); gtk_main(); gdk_threads_leave(); return FALSE; }