Python - Tkinter Menubutton: 一个菜单按钮是一个下拉菜单，在屏幕上停留时间的一部分。菜单的小工具，可以显示该菜单按钮的选择，当用户点击它与每个menubutton时.
一个菜单按钮是一个下拉菜单，在屏幕上停留时间的一部分。菜单的小工具，可以显示该菜单按钮的选择，当用户点击它与每个menubutton时.
语法:
这里是一个简单的语法来创建这个widget:
w = Menubutton ( master, option, ... )
参数:
master: 这代表了父窗口.
options: 下面是这个小工具最常用的选项列表。这些选项可以作为键 - 值对以逗号分隔.
| Option | Description |
|---|---|
| activebackground | The background color when the mouse is over the menubutton. |
| activeforeground | The foreground color when the mouse is over the menubutton. |
| anchor | This options controls where the text is positioned if the widget has more space than the text needs. The default is anchor=CENTER, which centers the text. |
| bg | The normal background color displayed behind the label and indicator. |
| bitmap | To display a bitmap on the menubutton, set this option to a bitmap name. |
| bd | The size of the border around the indicator. Default is 2 pixels. |
| cursor | The cursor that appears when the mouse is over this menubutton. |
| direction | Set direction=LEFT to display the menu to the left of the button; use direction=RIGHT to display the menu to the right of the button; or use direction='above' to place the menu above the button. |
| disabledforeground | 前景色显示在此菜单按钮时，它被禁用. |
| fg | The foreground color when the mouse is not over the menubutton. |
| height | The height of the menubutton in lines of text (not pixels!). The default is to fit the menubutton's size to its contents. |
| highlightcolor | Color shown in the focus highlight when the widget has the focus. |
| image | To display an image on this menubutton, |
| justify | This option controls where the text is located when the text doesn't fill the menubutton: use justify=LEFT to left-justify the text (this is the default); use justify=CENTER to center it, or justify=RIGHT to right-justify. |
| menu | To associate the menubutton with a set of choices, set this option to the Menu object containing those choices. That menu object must have been created by passing the associated menubutton to the constructor as its first argument. |
| padx | 多少空间留下的左边和右边的菜单按钮的文本。默认是1. |
| pady | How much space to leave above and below the text of the menubutton. Default is 1. |
| relief | Selects three-dimensional border shading effects. The default is RAISED. |
| state | Normally, menubuttons respond to the mouse. Set state=DISABLED to gray out the menubutton and make it unresponsive. |
| text | To display text on the menubutton, set this option to the string containing the desired text. Newlines ("\n") within the string will cause line breaks. |
| textvariable | You can associate a control variable of class StringVar with this menubutton. Setting that control variable will change the displayed text. |
| underline | Normally, no underline appears under the text on the menubutton. To underline one of the characters, set this option to the index of that character. |
| width | The width of the widget in characters. The default is 20. |
| wraplength | Normally, lines are not wrapped. You can set this option to a number of characters and all lines will be broken into pieces no longer than that number. |
例子:
自行尝试下面的例子:
from Tkinter import *
import tkMessageBox
import Tkinter top = Tk() mb= Menubutton ( top, text="condiments", relief=RAISED )
mb.grid()
mb.menu = Menu ( mb, tearoff = 0 )
mb["menu"] = mb.menu mayoVar = IntVar()
ketchVar = IntVar() mb.menu.add_checkbutton ( label="mayo",
variable=mayoVar )
mb.menu.add_checkbutton ( label="ketchup",
variable=ketchVar ) mb.pack()
top.mainloop()
这将产生以下结果:
