## page was renamed from zhArticleTemplate
##language:zh
#pragma section-numbers on


::-- ehu4ever [<<DateTime(2005-08-08T13:55:39Z)>>]
<<TableOfContents>>

= 表格排版示例 =

这个使用网格的示例使用了一个2×2规格的网格，它有三个按钮。有两个按钮放在上面那行。还有一个QUIT按钮，则独自占用了下面一行。如下图所示：
||Figure 4.4. Packing using a Table||
||{{attachment:table.png}}||

下面是代码：
{{{#!python
#!/usr/bin/env python

# example table.py

import pygtk
pygtk.require('2.0')
import gtk

class Table:
    # Our callback.
    # The data passed to this method is printed to stdout
    def callback(self, widget, data=None):
        print "Hello again - %s was pressed" % data

    # This callback quits the program
    def delete_event(self, widget, event, data=None):
        gtk.main_quit()
        return False

    def __init__(self):
        # Create a new window
        self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)

        # Set the window title
        self.window.set_title("Table")

        # Set a handler for delete_event that immediately
        # exits GTK.
        self.window.connect("delete_event", self.delete_event)

        # Sets the border width of the window.
        self.window.set_border_width(20)

        # Create a 2x2 table
        table = gtk.Table(2, 2, True)

        # Put the table in the main window
        self.window.add(table)

        # Create first button
        button = gtk.Button("button 1")

        # When the button is clicked, we call the "callback" method
        # with a pointer to "button 1" as its argument
        button.connect("clicked", self.callback, "button 1")


        # Insert button 1 into the upper left quadrant of the table
        table.attach(button, 0, 1, 0, 1)

        button.show()

        # Create second button

        button = gtk.Button("button 2")

        # When the button is clicked, we call the "callback" method
        # with a pointer to "button 2" as its argument
        button.connect("clicked", self.callback, "button 2")
        # Insert button 2 into the upper right quadrant of the table
        table.attach(button, 1, 2, 0, 1)

        button.show()

        # Create "Quit" button
        button = gtk.Button("Quit")

        # When the button is clicked, we call the main_quit function
        # and the program exits
        button.connect("clicked", lambda w: gtk.main_quit())

        # Insert the quit button into the both lower quadrants of the table
        table.attach(button, 0, 2, 1, 2)

        button.show()

        table.show()
        self.window.show()

def main():
    gtk.main()
    return 0       

if __name__ == "__main__":
    Table()
    main()

}}}
The Table class is defined in line 9-78. Lines 12-13 define the callback() method which is called when two of the buttons are "clicked". The callback just prints a message to the console indicating which button was pressed using the passed in string data.

Lines 16-18 define the delete_event() method which is called when the window is slated for deletion by the window manager.

Lines 20-78 define the Table instance initialization method __init__() . It creates a window (line 22), sets the window title (line 25), connects the delete_event() callback to the "delete_event" signal (line 29), and sets the border width (line 32). A gtk.Table is created in line 35 and added to the window in line 38.

The two upper buttons are created (lines 41 and 55), their "clicked" signals are connected to the callback() method (lines 45 and 59), and attached to the table in the first row (lines 49 and 61). Lines 66-72 create the "Quit" button, connect its "clicked" signal to the main_quit() function and attach it to the table spanning the whole second row.