如何更改 Tkinter 按钮的大小
Tkinter 按钮 Button 控件的 height 和 width 选项指定初始化期间创建的按钮的大小。初始化之后，我们仍然可以使用 configure 方法来配置 height 和 width 选项，以编程方式更改 Tkinter 按钮 Button 控件的大小。
指定 height 和 width 选项以设置按钮大小
tk.Button(self,
text = "",
height = 20,
width = 20)
以文本单位为单位，将 height 和 width 设置为 20。在默认的系统字体中，水平文本单位等于字符 0 的宽度，垂直文本单位等于 0 的高度。
完整的工作代码
import tkinter as tk
import tkinter.font as tkFont
app = tk.Tk()
app.geometry("400x200")
buttonExample1 = tk.Button(app,
text="Button 1",
width=10,
height=10)
buttonExample2 = tk.Button(app,
text="Button 2",
width=10,
height=10)
buttonExample1.pack(side=tk.LEFT)
buttonExample2.pack(side=tk.RIGHT)
app.mainloop()
如上所示，按钮的高度和宽度在像素中是不同的，尽管其 height 和 width 都设置为 10。
以像素为单位设置 Tkinter 按钮 Button 的宽度和高度
如果需要以像素 pixel 为单位指定 Tkinter 按钮控件的宽度和/或高度，则可以向按钮中添加虚拟的不可见的 1x1 像素图像。然后，将以像素为单位测量宽度和高度。
tk.Button(app,
text="Button 1",
image=pixelVirtual,
width=100,
height=100,
compound="c")
如果不可见的图像和文本应该在按钮的中央，我们还需要将 compound 选项设置为 c 或等效的 tk.CENTER。如果未配置 compound，则 text 将不会显示在按钮中。
import tkinter as tk
import tkinter.font as tkFont
app = tk.Tk()
app.geometry("300x100")
fontStyle = tkFont.Font(family="Lucida Grande", size=20)
labelExample = tk.Label(app, text="20", font=fontStyle)
pixelVirtual = tk.PhotoImage(width=1, height=1)
buttonExample1 = tk.Button(app,
text="Increase",
image=pixelVirtual,
width=100,
height=100,
compound="c")
buttonExample2 = tk.Button(app,
text="Decrease",
image=pixelVirtual,
width=100,
height=100,
compound="c")
buttonExample1.pack(side=tk.LEFT)
buttonExample2.pack(side=tk.RIGHT)
app.mainloop()
初始化后更改 Tkinter 按钮 Button 大小
在创建按钮控件之后，configure 方法可以设置 width 和/或 height 选项来更改按钮的大小。
buttonExample1.configure(height = 100,
width = 100)
它将 buttonExample1 的高度和宽度设置为 100。
初始化后更改按钮 Button 大小的完整工作示例
import tkinter as tk
import tkinter.font as tkFont
app = tk.Tk()
app.geometry("600x500")
def decreaseSize():
buttonExample1.configure(height = 100,
width = 100)
def increaseSize():
buttonExample2.configure(height = 400,
width = 400)
pixelVirtual = tk.PhotoImage(width=1, height=1)
buttonExample1 = tk.Button(app,
text="Decrease Size",
image=pixelVirtual,
width=200,
height=200,
compound="c",
command = decreaseSize)
buttonExample2 = tk.Button(app,
text="Increase Size",
image=pixelVirtual,
width=200,
height=200,
compound=tk.CENTER,
command = increaseSize)
buttonExample1.pack(side=tk.LEFT)
buttonExample2.pack(side=tk.RIGHT)
app.mainloop()
Founder of DelftStack.com. Jinku has worked in the robotics and automotive industries for over 8 years. He sharpened his coding skills when he needed to do the automatic testing, data collection from remote servers and report creation from the endurance test. He is from an electrical/electronics engineering background but has expanded his interest to embedded electronics, embedded programming and front-/back-end programming.
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