python tkinter button中的command能否直接给变量赋值?

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一般不是要传递参数嘛,可以直接给一个变量赋值嘛?

比如我按一下按钮,就给一个变量赋值了,而不用传递参数

按钮左键绑定方法showpic :button.bind(\'<Button-1>\',self.showpic) 在showpic中使用event.widget(这就是该按钮)event.widget[\'text\'] 获得该按钮的text然后进行判断就知道是哪个按钮调用的showpic()了~哈哈追问

没看懂 能解释一下吗

参考技术A button7 = Button(root, text='total_detour', command=lambda: total_detours(s_df))

Tkinter按钮(Button)

Python - Tkinter Button按钮组件是用来添加一个Python应用程序中的按钮。这些按钮可以显示文字或图像,表达按钮的目的。当你按一下按钮时,您可以附加到一个按钮的函数或方法,该方法自动调用。

按钮组件是用来添加一个Python应用程序中的按钮。这些按钮可以显示文字或图像,表达按钮的目的。当你按一下按钮时,您可以附加到一个按钮的函数或方法,该方法自动调用.

语法:

这里是一个简单的语法来创建这个widget:

w = Button ( master, option=value, ... )

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.

OptionDescription
activebackground Background color when the button is under the cursor.
activeforeground Foreground color when the button is under the cursor.
bd Border width in pixels. Default is 2.
bg Normal background color.
command Function or method to be called when the button is clicked.
fg Normal foreground (text) color.
font Text font to be used for the button‘s label.
height Height of the button in text lines (for textual buttons) or pixels (for images).
highlightcolor The color of the focus highlight when the widget has focus.
image Image to be displayed on the button (instead of text).
justify How to show multiple text lines: LEFT to left-justify each line; CENTER to center them; or RIGHT to right-justify.
padx Additional padding left and right of the text.
pady Additional padding above and below the text.
relief Relief specifies the type of the border. Some of the values are SUNKEN, RAISED, GROOVE, and RIDGE.
state Set this option to DISABLED to gray out the button and make it unresponsive. Has the value ACTIVE when the mouse is over it. Default is NORMAL.
underline Default is -1, meaning that no character of the text on the button will be underlined. If nonnegative, the corresponding text character will be underlined.
width Width of the button in letters (if displaying text) or pixels (if displaying an image).
wraplength If this value is set to a positive number, the text lines will be wrapped to fit within this length.

 

方法:

以下是这个小工具的常用方法:

MedthodDescription
flash() Causes the button to flash several times between active and normal colors. Leaves the button in the state it was in originally. Ignored if the button is disabled.
invoke() Calls the button‘s callback, and returns what that function returns. Has no effect if the button is disabled or there is no callback.

例子:

自行尝试下面的例子:

import Tkinter
import tkMessageBox

top = Tkinter.Tk()

def helloCallBack():
   tkMessageBox.showinfo( "Hello Python", "Hello World")

B = Tkinter.Button(top, text ="Hello,Python!少壮不努力,老大学编程.-易百在线教程 - www.yiibai.com", command = helloCallBack)

B.pack()
top.mainloop()

这将产生以下结果:

技术分享

 

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