3

这条简单的线:

wx.MessageBox('Foo', 'Bar', wx.OK | wx.ICON_ERROR)

给我一个带有错误图标和 Windows 错误噪音的消息框(这噪音不同wx.Bell())。我想为未捕获的异常创建一个自定义错误对话框,其中回溯在文本控件等中可用,并且我想包括 Windows 错误图标和噪音。我知道两者在 Windows 版本之间有所不同,甚至可以自定义错误噪音。

在 wxPython 中使用这些本机 Windows 资源是否有任何直接的方法?奖金问题;如果答案是否定的,那么做我想做的最直接的方法是什么?


接受答案后的结果:

在匿名懦夫的出色回答之后,我只是想炫耀一下结果,因为它们远远超出了我的预期。这是现在在未处理的异常上弹出的错误对话框(在 Windows 8 上):

截屏

它还包含现代 Windows“UNNK!” 错误声音。这是对话框背后的代码。我将它放在一个单独的模块中,该模块sys.excepthook在导入时会覆盖:

"""This module, when imported, overrides the default unhandled exception hook
with one that displays a fancy wxPython error dialog."""

import sys
import textwrap
import traceback
import winsound

import wx

def custom_excepthook(exception_type, value, tb):
    dialog = ExceptionDialog(exception_type, value, tb)
    dialog.ShowModal()

# Override sys.excepthook
sys.excepthook = custom_excepthook

class ExceptionDialog(wx.Dialog):
    """This class displays an error dialog with details information about the
    input exception, including a traceback."""

    def __init__(self, exception_type, exception, tb):
        wx.Dialog.__init__(self, None, -1, title="Unhandled error",
                           style=wx.DEFAULT_DIALOG_STYLE | wx.RESIZE_BORDER)

        self.SetSize((640, 480))
        self.SetMinSize((420, 200))

        self.exception = (exception_type, exception, tb)
        self.initialize_ui()

        winsound.MessageBeep(winsound.MB_ICONHAND)

    def initialize_ui(self):
        extype, exception, tb = self.exception

        panel = wx.Panel(self, -1)

        # Create the top row, containing the error icon and text message.
        top_row_sizer = wx.BoxSizer(wx.HORIZONTAL)

        error_bitmap = wx.ArtProvider.GetBitmap(
            wx.ART_ERROR, wx.ART_MESSAGE_BOX
        )
        error_bitmap_ctrl = wx.StaticBitmap(panel, -1)
        error_bitmap_ctrl.SetBitmap(error_bitmap)

        message_text = textwrap.dedent("""\
            I'm afraid there has been an unhandled error. Please send the
            contents of the text control below to the application's developer.\
        """)
        message_label = wx.StaticText(panel, -1, message_text)

        top_row_sizer.Add(error_bitmap_ctrl, flag=wx.ALL, border=10)
        top_row_sizer.Add(message_label, flag=wx.ALIGN_CENTER_VERTICAL)

        # Create the text control with the error information.
        exception_info_text = textwrap.dedent("""\
            Exception type: {}

            Exception: {}

            Traceback:
            {}\
        """)
        exception_info_text = exception_info_text.format(
            extype, exception, ''.join(traceback.format_tb(tb))
        )

        text_ctrl = wx.TextCtrl(panel, -1,
                                style=wx.TE_MULTILINE | wx.TE_DONTWRAP)
        text_ctrl.SetValue(exception_info_text)

        # Create the OK button in the bottom row.
        ok_button = wx.Button(panel, -1, 'OK')
        self.Bind(wx.EVT_BUTTON, self.on_ok, source=ok_button)
        ok_button.SetFocus()
        ok_button.SetDefault()

        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(top_row_sizer)
        # sizer.Add(message_label, flag=wx.ALL | wx.EXPAND, border=10)
        sizer.Add(text_ctrl, proportion=1, flag=wx.EXPAND)
        sizer.Add(ok_button, flag=wx.ALIGN_CENTER | wx.ALL, border=5)

        panel.SetSizer(sizer)

    def on_ok(self, event):
        self.Destroy()

我希望的唯一改进是让静态文本根据对话框的宽度自动流动和换行,但我不会为此费心制作自定义控件类。

4

1 回答 1

4

调用特定于操作系统的wx.MessageBox标准消息/警报对话框(在 Windows 上,即来自 user32.dll的MessageBox() )。wxWidgets 只是将您提供的标志(如 wx.OK 和 wx.ICON_INFORMATION)转换为本机消息框的特定于操作系统的标志和选项。

您可以通过wx.ArtProvider.

就声音而言,wx.Sound只能播放声音文件。但是,如果应用程序不必是可移植的,则可以使用该winsound模块。

import wx
import winsound # windows only

class Frame(wx.Frame):
    def __init__(self):
        wx.Frame.__init__(self,None,wx.ID_ANY)
        sizer = wx.BoxSizer(wx.HORIZONTAL)
        sizer.Add( wx.StaticBitmap(self,bitmap=wx.ArtProvider.GetBitmap(wx.ART_INFORMATION)) )
        sizer.Add( wx.StaticBitmap(self,bitmap=wx.ArtProvider.GetBitmap(wx.ART_QUESTION)) )
        sizer.Add( wx.StaticBitmap(self,bitmap=wx.ArtProvider.GetBitmap(wx.ART_WARNING)) )
        sizer.Add( wx.StaticBitmap(self,bitmap=wx.ArtProvider.GetBitmap(wx.ART_ERROR)) )
        self.SetSizerAndFit(sizer)
        self.Show()
        winsound.MessageBeep(winsound.MB_ICONASTERISK)
        winsound.PlaySound('SystemHand', winsound.SND_ASYNC | winsound.SND_ALIAS)

app = wx.PySimpleApp()
Frame()
app.MainLoop()
于 2012-12-12T11:28:52.047 回答