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📜  PyGTK-按钮类

📅  最后修改于: 2020-11-08 07:46:23             🧑  作者: Mango

gtk.Button小部件通常显示为带有文本标签的按钮。通常用于附加单击按钮时调用的回调函数或方法。

gtk.Button类具有以下构造函数-

gtk.Button(label = None, stock = None, use_underline = True)

其中，

  • 标签-按钮标签要显示的文本

  • Stock-库存ID，标识要在按钮中使用的库存图像和文本。默认为无。

  • 下划线-如果为True，则文本中的下划线表示下一个字符应加下划线并用于助记符加速器。

股票参数的一些预定义常量是-

  • STOCK_OK
  • 库存_停止
  • STOCK_YES
  • STOCK_NO
  • STOCK_QUIT
  • STOCK_CANCEL
  • STOCK_CLOSE

Button类具有以下重要方法-

S.NO Methods and Description
1

set_label()

This sets the text of the button label to label. This string is also used to select the stock item if the “use_stock” property is True.
2

get_label()

This retrieves the text from the label of the button
3

set_focus_on_click()

If True, the button grabs focus when clicked with the mouse.
4

set_alignment()

This is the horizontal and vertical alignment of the child widget. The value ranges from 0.0 to 1.0.
5

set_image()

This sets the image property to the value of image. The “gtkbutton-images” property should be set to True.

Button小部件发出以下信号-

activate This is emitted when the gtk.Widget’s activate() method is called. For a button it causes the “clicked” signal to be emitted.
clicked This is emitted when the mouse button is pressed and released while the pointer is over the button or when the button is triggered with the keyboard.