如何检测 wx.FileDialog 中是否按下了关闭按钮？

Question

How can i evaluate if a user pressed the Close Window button in a wx.fileDialog while opening a file?

我有 2 个文本框... 一个用于显示输入文件路径另一个是显示输出文件路径

output 取决于 input filepath，因为 output filepath 将与输入目录相同，但名称不同。

有时用户 opens the filepath and press the close button... 并且该操作生成 outfile 等于 _edited.txt 但这不应该发生。

我想要

if user_action == press_the_close_button:
    outfile = ""
else:
    outfile = infile_edited.txt

我该如何解决？

我正在使用： Py 2.7.9 和 wx 3.0.2.0

the openFile function

def abrirArquivo(self, event):
        try:
            #open fileDialog box
            openFileDialog = wx.FileDialog(self, "Open", "", "", "Text files (*.txt)|*.txt", wx.FD_OPEN | wx.FD_FILE_MUST_EXIST)
            openFileDialog.ShowModal()

            #get the filepath
            infile = openFileDialog.GetPath()
            #change the inputTxtCtrl to the filepath
            self.inputTxtCtrl.SetValue(infile)

            #if user dont select any file in the fileDialog, how can i evaluate it and correctly so it doesnt change the outfileTextBox
            if infile == "":
                #change textLabel to "File not selected.."
                self.textoProgresso.SetLabel("File wasn't loaded properly...")
            else:
                #create output filepath
                outfile = infile[0:len(str(infile))-4] + "_edited.txt"
                #change outputTxtCtrl to the outfile filepath
                self.outputTxtCtrl.SetValue(outfile)
                #change progress bar to 10%
                self.barraProgresso.SetValue(10)
                #change textLabel to "File found.."
                self.textoProgresso.SetLabel("File loaded in the system...")
        except Exception:
            print "error_abrir_arquivo"

Answer 1

您需要检查 wxFileDialog::ShowModal 中的 return。如果用户按下确定，它将是 wxID_OK，否则将是 wxID_CANCEL。

http://docs.wxwidgets.org/trunk/classwx_file_dialog.html#a04943e4abb27a197a110898d40ddb4f0

Answer 2

从 wxPython 2.8.11 开始，您可以使用上下文管理器。

with wx.FileDialog(self,
                   message='Choose file to open',
                   defaultDir=wx.GetHomeDir(),
                   defaultFile='evaluation.doc',
                   style=wx.FD_OPEN|wx.FD_FILE_MUST_EXIST) as dlgF:
    fdRet = dlgF.ShowModal()
    if fdRet == wx.ID_OK:
        fileName = dlgF.GetPath()
        # do something with the file e.g.
        desktop.open(fileName)
    elif fdRet == wx.ID_CANCEL:
        # optional handling of cancel button
        pass

通过检查 return 代码 "wx.ID_OK" 并使用样式 "wx.FD_FILE_MUST_EXIST" 您知道一个文件被选中。如果您需要对取消对话框进行特殊处理，您可以使用 'elif'.

如何检测 wx.FileDialog 中是否按下了关闭按钮？

How to detect if close button was pressed in a wx.FileDialog?

python

wxwidgets

wxpython

python-2.7