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📜  Python Tkinter按钮

📅  最后修改于: 2020-10-25 03:50:05             🧑  作者: Mango

Python Tkinter按钮

按钮小部件用于将各种类型的按钮添加到Python应用程序。 Python允许我们根据需要配置按钮的外观。可以根据要求设置或重置各种选项。

我们还可以将方法或函数与按钮相关联，当按下按钮时会调用该按钮。

下面给出了使用按钮小部件的语法。

句法

W = Button(parent, options)

下面列出了可能的选项。

SN Option Description
1 activebackground It represents the background of the button when the mouse hover the button.
2 activeforeground It represents the font color of the button when the mouse hover the button.
3 Bd It represents the border width in pixels.
4 Bg It represents the background color of the button.
5 Command It is set to the function call which is scheduled when the function is called.
6 Fg Foreground color of the button.
7 Font The font of the button text.
8 Height The height of the button. The height is represented in the number of text lines for the textual lines or the number of pixels for the images.
10 Highlightcolor The color of the highlight when the button has the focus.
11 Image It is set to the image displayed on the button.
12 justify It illustrates the way by which the multiple text lines are represented. It is set to LEFT for left justification, RIGHT for the right justification, and CENTER for the center.
13 Padx Additional padding to the button in the horizontal direction.
14 pady Additional padding to the button in the vertical direction.
15 Relief It represents the type of the border. It can be SUNKEN, RAISED, GROOVE, and RIDGE.
17 State This option is set to DISABLED to make the button unresponsive. The ACTIVE represents the active state of the button.
18 Underline Set this option to make the button text underlined.
19 Width The width of the button. It exists as a number of letters for textual buttons or pixels for image buttons.
20 Wraplength If the value is set to a positive number, the text lines will be wrapped to fit within this length.

例

#python application to create a simple button

from tkinter import * 


top = Tk()

top.geometry("200x100")

b = Button(top,text = "Simple")

b.pack()

top.mainaloop()

输出：

例

from tkinter import * 

top = Tk()

top.geometry("200x100")

def fun():
    messagebox.showinfo("Hello", "Red Button clicked")


b1 = Button(top,text = "Red",command = fun,activeforeground = "red",activebackground = "pink",pady=10)

b2 = Button(top, text = "Blue",activeforeground = "blue",activebackground = "pink",pady=10)

b3 = Button(top, text = "Green",activeforeground = "green",activebackground = "pink",pady = 10)

b4 = Button(top, text = "Yellow",activeforeground = "yellow",activebackground = "pink",pady = 10)

b1.pack(side = LEFT)

b2.pack(side = RIGHT)

b3.pack(side = TOP)

b4.pack(side = BOTTOM)

top.mainloop()

输出：