python語言可以呼叫glade檔案,生成程式介面.在程式中,不需對介面進行配置等操作.
在/tmp/project1裡編輯一個calc.py檔案,新增下面的內容:

#!/usr/bin/env python
# calc
import sys
try:
	import pygtk
	pygtk.require("2.0")
except:
	pass
try:
	import gtk
	import gtk.glade
except:
	print "This program need to be run in graphical environment!"
	sys.exit(1)

class calc:
	# 初始化calc類
	def __init__(self):
		self.level = 1
		self.method = 1
		self.value1 = 0
		self.value2 = 0
		# 定義使用的glade
 
檔案
		self.gladefile = "./calc.glade"
		# 將glade檔案中的介面匯入到self.wTree中
		self.wTree = gtk.glade.XML(self.gladefile)
		# 建立一個字典描述各個訊號量的處理函式
		# "on_window1_destroy"的處理方法是gtk.main_quit,即主程式退出.
		# 其他按鍵的處理方法是各自的處理函式.
		dic = { "on_window1_destroy" : gtk.main_quit,
			"on_button1_clicked" : self.button1_clicked,
			"on_button2_clicked" : self.button2_clicked,
			"on_button3_clicked" : self.button3_clicked,
			"on_button4_clicked" : self.button4_clicked,
			"on_button5_clicked" : self.button5_clicked,
			"on_button6_clicked" : self.button6_clicked,
			"on_button7_clicked" : self.button7_clicked,
			"on_button8_clicked" : self.button8_clicked,
			"on_button9_clicked" : self.button9_clicked,
			"on_button0_clicked" : self.button0_clicked,
			"on_buttonadd_clicked" : self.buttonadd_clicked,
			"on_buttonsub_clicked" : self.buttonsub_clicked,
			"on_buttonsum_clicked" : self.buttonsum_clicked }
		# 將dic與控制元件的signal連線
		self.wTree.signal_autoconnect(dic)
		# 定義self.label1變數,它指向控制元件label1
		self.label1 = self.wTree.get_widget("label1")

# 定義各個按鍵的clicked事件
# self.value1,self.value2,self.value3,分別表示算術表示式的第1個數字,第2個數字和計算結果.
# self.level==1表示此數值作為算術表示式的第1個數字,self.level==2表示此數值作為算術表示式的第2個數字.
# self.method==1表示進行加法運算,self.method==2表示進行減法運算.

        # 定義1-0按鍵的clicked處理函式
	def button1_clicked(self, widget):
		if self.level == 1:
			self.value1 = 1
		elif self.level == 2:
			self.value2 = 1
	def button2_clicked(self, widget):
		if self.level == 1:
			self.value1 = 2
		elif self.level == 2:
			self.value2 = 2
	def button3_clicked(self, widget):
		if self.level == 1:
			self.value1 = 3
		elif self.level == 2:
			self.value2 = 3
	def button4_clicked(self, widget):
		if self.level == 1:
			self.value1 = 4
		elif self.level == 2:
			self.value2 = 4
	def button5_clicked(self, widget):
		if self.level == 1:
			self.value1 = 5
		elif self.level == 2:
			self.value2 = 5
	def button6_clicked(self, widget):
		if self.level == 1:
			self.value1 = 6
		elif self.level == 2:
			self.value2 = 6
	def button7_clicked(self, widget):
		if self.level == 1:
			self.value1 = 7
		elif self.level == 2:
			self.value2 = 7
	def button8_clicked(self, widget):
		if self.level == 1:
			self.value1 = 8
		elif self.level == 2:
			self.value2 = 8
	def button9_clicked(self, widget):
		if self.level == 1:
			self.value1 = 9
		elif self.level == 2:
			self.value2 = 9
	def button0_clicked(self, widget):
		if self.level == 1:
			self.value1 = 0
		elif self.level == 2:
			self.value2 = 0
	def buttonadd_clicked(self, widget):
		self.level = 2
		self.method = 1
	def buttonsub_clicked(self, widget):
		self.level = 2
		self.method = 2
	def buttonsum_clicked(self, widget):
		self.level = 1
		if self.method == 1:
			self.value3 = self.value1 + self.value2
		elif self.method == 2:
			self.value3 = self.value1 - self.value2
		self.label1.set_text(str(self.value3))
		self.value1 = 0
		self.value2 = 0

#主函式體
if __name__ == "__main__":
	frm = calc()
	gtk.main()

# THE END

在桌面環境下的終端中執行:
$ cd /tmp/project1
$ python calc.py

這個計算器程式可以進行1位數字的加減運算.

===== 五.使用C語言呼叫glade檔案 =====
C語言也可以通過呼叫glade檔案,來生成程式介面.
在/tmp/project1裡編輯一個calc.c檔案,新增下面的內容:

// Calc.c
#include <gtk/gtk.h>
#include <glade/glade.h>

// 初始化變數,value1,value2,value3分別為算術表示式的第1個數字,第2個數字和運算結果
// method=0 表示進行加法計算,method=1表示進行減法計算.
// level=0 表示按鍵值賦於value1,level=1表示按鍵值賦於value2.
int value1=0;
int value2=0;
int value3=0;
int method=0;
int level=0;
GtkWidget * label1;

void on_window1_destroy(GtkWidget *widget, gpointer user_data) {
gtk_exit(1);
return FALSE;
}
// 定義數字鍵1-0的clicked處理函式
void on_button1_clicked(GtkWidget *widget, gpointer user_data) {
if(level)
	{ value2=1; }
else
	{ value1=1; }
}

void on_button2_clicked(GtkWidget *widget, gpointer user_data) {
if(level)
	{ value2=2; }
else
	{ value1=2; }
}

void on_button3_clicked(GtkWidget *widget, gpointer user_data) {
if(level)
	{ value2=3; }
else
	{ value1=3; }
}

void on_button4_clicked(GtkWidget *widget, gpointer user_data) {
if(level)
	{ value2=4; }
else
	{ value1=4; }
}

void on_button5_clicked(GtkWidget *widget, gpointer user_data) {
if(level)
	{ value2=5; }
else
	{ value1=5; }
}

void on_button6_clicked(GtkWidget *widget, gpointer user_data) {
if(level)
	{ value2=6; }
else
	{ value1=6; }
}

void on_button7_clicked(GtkWidget *widget, gpointer user_data) {
if(level)
	{ value2=7; }
else
	{ value1=7; }
}

void on_button8_clicked(GtkWidget *widget, gpointer user_data) {
if(level)
	{ value2=8; }
else
	{ value1=8; }
}

void on_button9_clicked(GtkWidget *widget, gpointer user_data) {
if(level)
	{ value2=9; }
else
	{ value1=9; }
}

void on_button0_clicked(GtkWidget *widget, gpointer user_data) {
if(level)
	{ value2=0; }
else
	{ value1=0; }
}

void on_buttonadd_clicked(GtkWidget *widget, gpointer user_data) {
	level=1;
	method=0;
}

void on_buttonsub_clicked(GtkWidget *widget, gpointer user_data) {
	level=1;
	method=1;
}

// 定義buttonsum按鍵的clicked處理函式
void on_buttonsum(GtkWidget *widget, gpointer user_data) {
	char s1[3];
	if(method) value3=value1-value2;
	else value3=value1+value2;
	value1=0;
	value2=0;
	level=0;
	sprintf(s1,"%d",value3);
	s1[2]='\0';
	gtk_label_set_text(GTK_LABEL(user_data),s1);
}

// 主函式
int main(int argc, char *argv[]) {
    Glade
 
XML *xml;
    GtkWidget * buttonsum;

    gtk_init(&argc, &argv);

// 載入calc.glade檔案
    xml = glade_xml_new("calc.glade", NULL, NULL);

// 連線控制元件signal到處理函式,處理函式與控制元件signal的handle同名.
    glade_xml_signal_autoconnect(xml);
    label1 =  glade_xml_get_widget(xml,"label1");
    buttonsum = glade_xml_get_widget(xml,"buttonsum");

    gtk_signal_connect(GTK_OBJECT(buttonsum), "clicked",GTK_SIGNAL_FUNC (on_buttonsum), label1);
    /* start the event loop */
    gtk_main();

    return 0;
}
//  END

編譯這個程式,然後執行:
$ cc -o calc calc.c `pkg-config –cflags –libs libglade-2.0`
$ ./calc