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

how can evaluate if user pressed close window button in wx.filedialog while opening file?

i have 2 textboxes... 1 showing input filepath , other show output filepath

the output depends on input filepath, since output filepath gonna same directory of input, different name.

sometimes user opens filepath , press close button... , action generates outfile equals _edited.txt shouldn't happen.

i wanna

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

how can fix that?

i'm using: py 2.7.9 , 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 filepath             infile = openfiledialog.getpath()             #change inputtxtctrl filepath             self.inputtxtctrl.setvalue(infile)              #if user dont select file in filedialog, how can evaluate , correctly doesnt change outfiletextbox             if infile == "":                 #change textlabel "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 outfile filepath                 self.outputtxtctrl.setvalue(outfile)                 #change progress bar 10%                 self.barraprogresso.setvalue(10)                 #change textlabel "file found.."                 self.textoprogresso.setlabel("file loaded in system...")         except exception:             print "error_abrir_arquivo" 

you need check return wxfiledialog::showmodal. wxid_ok if user pressed ok, , wxid_cancel otherwise.

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