Python Tkinter:在状态栏中显示描述
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【中文标题】Python Tkinter:在状态栏中显示描述【英文标题】:Python Tkinter: Display description in status bar 【发布时间】:2014-05-24 15:01:01 【问题描述】:对于我的 Tkinter GUI,我已经创建了一个菜单和一个状态栏。但是,当鼠标悬停在菜单项上时如何显示描述?
请运行以下代码(例如,当鼠标在菜单项“关于”上时,状态栏应该写“信息”:
from Tkinter import Tk, Frame, BOTH, Menu, Label, SUNKEN, X, BOTTOM
class Application(Frame):
def __init__(self, parent):
Frame.__init__(self, parent, background = "white")
parent.configure(bg = "black")
self.pack(fill = BOTH, expand = True, padx = 20, pady = 20)
self.parent = parent
# Maximize window
self.screenWidth = self.parent.winfo_screenwidth() - 5
self.screenHeight = self.parent.winfo_screenheight() - 110
self.parent.geometry('%dx%d+%d+%d' % (self.screenWidth, self.screenHeight, 0, 0))
self.parent.resizable(0, 0)
# Status bar
self.statusBar = StatusBar(self.parent)
self.statusBar.pack(side = BOTTOM, fill = X)
# Menu bar
menubar = Menu(self.parent)
self.parent.config(menu = menubar)
self.commandMenu = Menu(menubar, tearoff = 0)
self.commandMenu.add_command(label = "Rename", command = self.onRename)
menubar.add_cascade(label = "Command", menu = self.commandMenu)
self.helpMenu = Menu(menubar, tearoff = 0)
self.helpMenu.add_command(label = "About", command = self.onAbout)
menubar.add_cascade(label = "Help", menu = self.helpMenu)
def onRename(self):
pass
def onAbout(self):
pass
class StatusBar(Frame):
def __init__(self, master):
Frame.__init__(self, master)
self.label = Label(self, bd = 1, relief = SUNKEN, anchor = "w")
self.label.pack(fill=X)
def set(self, format0, *args):
self.label.config(text = format0 % args)
self.label.update_idletasks()
def clear(self):
self.label.config(text="")
self.label.update_idletasks()
def main():
root = Tk()
Application(root)
root.mainloop()
if __name__ == '__main__':
main()
【问题讨论】:
【参考方案1】:所以,您要查找的是<<MenuSelect>>
。
如果你将 self.helpMenu 绑定到 <<MenuSelect>>
,就像我更新你的代码一样:
__author__ = 'rcope'
from Tkinter import Tk, Frame, BOTH, Menu, Label, SUNKEN, X, BOTTOM
class Application(Frame):
def __init__(self, parent):
Frame.__init__(self, parent, background = "white")
parent.configure(bg = "black")
self.pack(fill = BOTH, expand = True, padx = 20, pady = 20)
self.parent = parent
# Maximize window
self.screenWidth = self.parent.winfo_screenwidth() - 5
self.screenHeight = self.parent.winfo_screenheight() - 110
self.parent.geometry('%dx%d+%d+%d' % (self.screenWidth, self.screenHeight, 0, 0))
self.parent.resizable(0, 0)
# Status bar
self.statusBar = StatusBar(self.parent)
self.statusBar.pack(side = BOTTOM, fill = X)
# Menu bar
menubar = Menu(self.parent)
self.parent.config(menu = menubar)
self.commandMenu = Menu(menubar, tearoff = 0)
self.commandMenu.add_command(label = "Rename", command = self.onRename)
menubar.add_cascade(label = "Command", menu = self.commandMenu)
self.helpMenu = Menu(menubar, tearoff = 0)
self.helpMenu.add_command(label = "About", command = self.onAbout)
menubar.add_cascade(label = "Help", menu = self.helpMenu)
self.helpMenu.bind("<<MenuSelect>>", self.statusBarUpdate)
def onRename(self):
pass
def onAbout(self):
pass
def statusBarUpdate(self, event=None):
print "Status Bar Update Called"
if self.parent.call(event.widget, "index", "active") == 0:
self.statusBar.set("About This Application")
else:
self.statusBar.set("")
class StatusBar(Frame):
def __init__(self, master):
Frame.__init__(self, master)
self.label = Label(self, bd = 1, relief = SUNKEN, anchor = "w")
self.label.pack(fill=X)
def set(self, format0, *args):
self.label.config(text = format0 % args)
self.label.update_idletasks()
def clear(self):
self.label.config(text="")
self.label.update_idletasks()
def main():
root = Tk()
Application(root)
root.mainloop()
if __name__ == '__main__':
main()
您现在唯一需要跟踪的是哪个索引对应于哪个菜单项。我建议每次添加菜单项时保持一个 int 递增,并通过 dict 使用每个索引来获取有关所需菜单项的任何相关信息。 Tkinter 不会通过 statusBarUpdate 回调中的条目告诉您很多信息(就像从标有“关于”的菜单命令中调用的那样),所以我认为您需要自己滚动。
【讨论】:
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