杂项构件/箭头 Arrows@GTK+ 2.0 中文教程连载

GtkWidget *gtk_arrow_new( GtkArrowType   arrow_type,

GtkShadowType  shadow_type );

void gtk_arrow_set( GtkArrow      *arrow,

GtkArrowType   arrow_type,

GtkShadowType  shadow_type );

GTK_ARROW_UP  向上

GTK_ARROW_DOWN  向下

GTK_ARROW_LEFT  向左

GTK_ARROW_RIGHT  向右

GTK_SHADOW_IN

GTK_SHADOW_OUT (缺省值)

GTK_SHADOW_ETCHED_IN

GTK_SHADOW_ETCHED_OUT

#include <gtk/gtk.h>

/* 用指定的参数创建一个箭头构件并将它组装到按钮中 */

GtkWidget *create_arrow_button( GtkArrowType  arrow_type,

GtkShadowType shadow_type )

{

GtkWidget *button;

GtkWidget *arrow;

button = gtk_button_new ();

arrow = gtk_arrow_new (arrow_type, shadow_type);

gtk_container_add (GTK_CONTAINER (button), arrow);

gtk_widget_show (button);

gtk_widget_show (arrow);

return button;

}

int main( int   argc,

char *argv[] )

{

/* GtkWidget 是构件的存储类型 */

GtkWidget *window;

GtkWidget *button;

GtkWidget *box;

/* 初始化 */

gtk_init (&argc, &argv);

/* 创建一个新窗口 */

window = gtk_window_new (GTK_WINDOW_TOPLEVEL);

gtk_window_set_title (GTK_WINDOW (window), "Arrow Buttons");

/* 对所有的窗口都这样做是一个好主意 */

g_signal_connect (G_OBJECT (window), "destroy",

G_CALLBACK (gtk_main_quit), NULL);

/* 设置窗口的边框的宽度 */

gtk_container_set_border_width (GTK_CONTAINER (window), 10);

/* 建一个组装盒以容纳箭头/按钮 */

box = gtk_hbox_new (FALSE, 0);

gtk_container_set_border_width (GTK_CONTAINER (box), 2);

gtk_container_add (GTK_CONTAINER (window), box);

/* 组装、显示所有的构件 */

gtk_widget_show (box);

button = create_arrow_button (GTK_ARROW_UP, GTK_SHADOW_IN);

gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 3);

button = create_arrow_button (GTK_ARROW_DOWN, GTK_SHADOW_OUT);

gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 3);

button = create_arrow_button (GTK_ARROW_LEFT, GTK_SHADOW_ETCHED_IN);

gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 3);

button = create_arrow_button (GTK_ARROW_RIGHT, GTK_SHADOW_ETCHED_OUT);

gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 3);

gtk_widget_show (window);

/* 进入主循环，等待用户的动作 */

gtk_main ();

return 0;

}