pixmapbutton1.c

《Linux程序设计权威指南》源代码

	/* File: pixmapbutton.c */

	#include <gtk/gtk.h>

	// 建立一个水平容器, 它容纳一个图像和一个标签
	GtkWidget *xpm_label_box( GtkWidget *parent,
                           gchar     *xpm_filename,
                           gchar     *label_text )
	{
		GtkWidget *box;
		GtkWidget *label;
		GtkWidget *pixmapwid;
		GdkPixmap *pixmap;
		GdkBitmap *mask;
		GtkStyle *style;

		//建立水平容器
		box = gtk_hbox_new(FALSE, 0);
 		gtk_container_set_border_width(GTK_CONTAINER(box), 2);

		//获取按钮的style, 以便取得背景颜色 
		style = gtk_widget_get_style(parent);

		//建立 pixmap
		pixmap = gdk_pixmap_create_from_xpm(parent->window, &mask,
			&style->bg[GTK_STATE_NORMAL], xpm_filename);
		pixmapwid = gtk_pixmap_new(pixmap, mask);

		//建立标签
		label = gtk_label_new(label_text);

		//封装pixmap和标签
		gtk_box_pack_start(GTK_BOX (box), pixmapwid, FALSE, FALSE, 3);
		gtk_box_pack_start(GTK_BOX (box), label, FALSE, FALSE, 3);

		gtk_widget_show(pixmapwid);
		gtk_widget_show(label);

		return(box);
	}

	void callback(GtkWidget *widget, gpointer   data )
	{
		g_print ("Hello again - %s was pressed\n", (char *) data);
	}

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

		//初始化
		gtk_set_locale();
		gtk_init (&argc, &argv);

		//建立定级窗口
		window = gtk_window_new (GTK_WINDOW_TOPLEVEL);

		//设置窗口管理器条上的标题
		gtk_window_set_title (GTK_WINDOW (window), "图像按钮");

		gtk_signal_connect (GTK_OBJECT (window), "destroy",
                         GTK_SIGNAL_FUNC (gtk_exit), NULL);
		gtk_signal_connect (GTK_OBJECT (window), "delete_event",
                         GTK_SIGNAL_FUNC (gtk_exit), NULL);

		gtk_container_set_border_width (GTK_CONTAINER (window), 10);
		gtk_widget_realize(window);

		//建立一个空的按钮
		button = gtk_button_new ();
		gtk_signal_connect (GTK_OBJECT (button), "clicked",
                         GTK_SIGNAL_FUNC (callback), (gpointer) "GTK 按钮");

		//创建按钮组件
		box = xpm_label_box(window, "info.xpm", "GTK 按钮");

		gtk_widget_show(box);

		gtk_container_add(GTK_CONTAINER(button), box);

		gtk_widget_show(button);

		gtk_container_add(GTK_CONTAINER (window), button);

		gtk_widget_show (window);

		gtk_main ();

		return(0);
	}