wxpython怎么设置按钮的字体大小

b1 = wx.Button(parent=panel, id=10, label='选择文件')

#-*- coding:utf-8 -*- 
import wx
class Frame(wx.Frame):
    def __init__(self):
        wx.Frame.__init__(self,None,title = u"测试界面",size=(1340,670))  
        self.Center()    
        self.SetMaxSize((1340,670))
        self.SetMinSize((1340,670))                                                                   
        self.panel = wx.Panel(self,size=(1340,670))
        self.locale = wx.Locale(wx.LANGUAGE_ENGLISH)
       
        global Test_Button
        
        fontButton = wx.Font(15,wx.SWISS,wx.NORMAL,wx.NORMAL)
        Test_Button = wx.Button(self.panel,label=u"测试按钮",pos=(100,155),size=(200,45))
        Test_Button.SetFont(fontButton)
        Test_Button.SetBackgroundColour("#90EE90")
        self.Bind(wx.EVT_BUTTON,self.Test_Button,Test_Button)
        
       
        
      
    
        
    ### 按钮   
    def Test_Button(self, event):     
        
        Test_Button.SetBackgroundColour("#CCCCCC")
       
        self.Train_Text = wx.StaticText(self.panel, -1, "按钮颜色改变"  
                ,pos=(100,25),size=(200,110)) 
        
  
 
        
if __name__ == "__main__":
    app = wx.App()
    frame = Frame()
    frame.Show()
    app.MainLoop()

16，17行有
参考这个链接
https://blog.csdn.net/qq_27802435/article/details/85133362?utm_medium=distribute.wap_relevant.none-task-blog-2~default~baidujs_title~default-0.wap_blog_relevant_default&spm=1001.2101.3001.4242.1&utm_relevant_index=3