GtkButton 透明按钮

最新推荐文章于 2024-05-09 08:30:00 发布

liumf2005

最新推荐文章于 2024-05-09 08:30:00 发布

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分类专栏： gtk 文章标签： gtk button callback signal null object

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int main(int argc, char *argv[])  
{  
  GtkWidget *window;  
  GtkWidget *button;  
  GtkWidget *hbox;  
  GtkWidget *eventbox;  

  GdkGC *gc;  
  GdkColormap *colormap;  
  GdkBitmap *window_shape_bitmap;  

  GdkColor black;  
  GdkColor white;  

  gtk_init(&argc, &argv);  

  window = gtk_window_new(GTK_WINDOW_TOPLEVEL);  
  gtk_window_set_title(GTK_WINDOW(window), "圆形窗口测试程序！");  
  gtk_window_set_default_size(GTK_WINDOW(window), 400, 300);  
  g_signal_connect(G_OBJECT(window), "destroy", G_CALLBACK(gtk_main_quit), NULL);  

  hbox = gtk_hbox_new(FALSE, 10);  
  gtk_container_add(GTK_CONTAINER(window), hbox);  
  gtk_widget_show(hbox);  

  eventbox = gtk_event_box_new();  
  gtk_box_pack_start_defaults(GTK_BOX(hbox), eventbox);  
  gtk_widget_show(eventbox);  

  button = gtk_button_new_with_label("Hello,World!你好，世界！");  
  gtk_container_add(GTK_CONTAINER(eventbox), button);  
  gtk_widget_show(button);  

  GtkWidget *button2 = gtk_button_new_with_label("Hello,World!你好，世界！");  
  gtk_box_pack_start_defaults(GTK_BOX(hbox), button2);  
  gtk_widget_show(button2);  

  gtk_widget_show_all(window);  

  colormap = gdk_colormap_get_system ();  
  gdk_color_black (colormap, & black);  
  gdk_color_white (colormap, & white);  

  window_shape_bitmap = (GdkBitmap *) gdk_pixmap_new (NULL, 400, 300, 1);  

  gc = gdk_gc_new (window_shape_bitmap);  
  gdk_gc_set_foreground (gc, & black);  
  gdk_gc_set_background (gc, & white);  
  gdk_draw_rectangle (window_shape_bitmap, gc, TRUE, 0, 0, 400, 300);  

  gdk_gc_set_foreground (gc, & white);  
  gdk_gc_set_background (gc, & black);  

  gdk_draw_arc(window_shape_bitmap, gc,TRUE, 0, 0, 400, 300, 0, 360*64);  
  gtk_widget_shape_combine_mask(eventbox, window_shape_bitmap, 0, 0);  

  gtk_main();  
  return 0;  
}