[英]Python:How to prohibit opening of an application if it is already running
I am designing a windows utility software for Windows 7 coded in Python with Wxpython for GUI works.I dont want to open my software if it is already opened. 我设计Python编写与wxPython的 GUI的 works.I不用想,如果它已经打开了,打开我的软件适用于Windows 7在Windows实用软件。 I want a function like this if user opens that software a message box is to be displayed on windows screen showing that "Your application is already running".
我希望这样的功能,如果用户打开该软件,将在Windows屏幕上显示一个消息框,显示“您的应用程序已在运行”。
Plz help. Plz的帮助。 Thanks in advance...
提前致谢...
There's already existing wxPython facility that implements wanted logic, called wx.SingleInstanceChecker
. 现有的wxPython工具已经实现了所需的逻辑,称为
wx.SingleInstanceChecker
。 Here's and example of code (shamelessly borrowed from wxPython wiki ): 这是代码的例子(从wxPython wiki中无耻地借用):
import wx
class SingleAppFrame(wx.Frame):
def __init__(self, parent, title):
wx.Frame.__init__(self, parent, title=title, size=(300, 300))
self.Centre()
class SingleApp(wx.App):
def OnInit(self):
self.name = "SingleApp-%s" % wx.GetUserId()
self.instance = wx.SingleInstanceChecker(self.name)
if self.instance.IsAnotherRunning():
wx.MessageBox("Another instance is running", "ERROR")
return False
frame = SingleAppFrame(None, "SingleApp")
frame.Show()
return True
app = SingleApp(redirect=False)
app.MainLoop()
This cannonical example (for a matter of luck) makes exatly what you've asked. 这个非常典型的例子(为了运气)可以很好地满足你的要求。
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