#include?

void?change_background（GtkWidget?*widget?int?w?int?h?const?gchar?*path）
{
????????//1.允許窗口可以繪圖
????????gtk_widget_set_app_paintable（widget?TRUE）;
????????gtk_widget_realize（widget）;

		/*?更改背景圖時(shí)，圖片會(huì)重疊?
		*?這時(shí)要手動(dòng)調(diào)用下面的函數(shù)，讓窗口繪圖區(qū)域失效，產(chǎn)生窗口重繪制事件（即?expose?事件）。?
		*/?
????????gtk_widget_queue_draw（widget）;
????????GdkPixbuf?*src?=?gdk_pixbuf_new_from_file（path?NULL）;
????????GdkPixbuf?*dst?=?gdk_pixbuf_scale_simple（srcwhGDK_INTERP_BILINEAR）;

		/*?創(chuàng)建pixmap圖像;??
		*?NULL：不需要蒙版;??
		*?123：?0~255，透明到不透明?
		*/
????????GdkPixmap?*pixmap?=?NULL;
????????gdk_pixbuf_render_pixmap_and_mask（dst&pixmapNULL128）;
		
		//?通過pixmap給widget設(shè)置一張背景圖，最后一個(gè)參數(shù)必須為:?FASL
????????gdk_window_set_back_pixmap（widget->windowpixmapFALSE）;
????????

????????g_object_unref（src）;
????????g_object_unref（dst）;
????????g_object_unref（pixmap）;

????????return;
}

int?main（int?argc?char?*argv[]）
{
????????//1.gtk環(huán)境的初始化
????????gtk_init（&argc?&argv）;

????????//2.創(chuàng)建一個(gè)window
????????GtkWidget?*window?=?gtk_window_new（GTK_WINDOW_TOPLEVEL）;

????????//3.設(shè)置窗口標(biāo)題
????????gtk_window_set_title（GTK_WINDOW（window）?“設(shè)置窗口背景圖“）;
????????gtk_widget_set_size_request（window?500450）;

????????//4.設(shè)置窗口圖片
????????change_background（window?500?400?“./img/1.jpg“）;

????????//5.顯示所有窗口
????????gtk_widget_show_all（window）;

????????//6.主事件循環(huán)
????????gtk_main（）;

????????return?0;
}

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件????????203??2015-07-04?10:25??18_gtk_background\Makefile

?????文件???????7830??2015-07-04?10:29??18_gtk_background\gtk_background

?????文件???????1649??2015-07-30?09:43??18_gtk_background\gtk_background.c

?????文件??????99863??2015-06-02?10:05??18_gtk_background\img\1.jpg

?????目錄??????????0??2015-07-03?10:49??18_gtk_background\img

?????目錄??????????0??2015-07-04?10:29??18_gtk_background

-----------?---------??----------?-----??----

???????????????109545????????????????????6