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class EncryptHook(wx.FileDialogCustomizeHook):
def __init__(self):
super().__init__()
self.encrypt = False
# Override to add custom controls using the provided customizer object.
def AddCustomControls(self, customizer):
# Suppose we can encrypt files when saving them.
self.checkbox = customizer.AddCheckBox("Encrypt")
# While self.checkbox is not really a wx.CheckBox, it looks almost like one
# and, in particular, we can bind to custom control events as usual.
self.checkbox.Bind(wx.EVT_CHECKBOX, self.OnCheckbox)
# The encryption parameters can be edited in a dedicated dialog.
self.button = customizer.AddButton("Parameters...")
self.button.Bind(wx.EVT_BUTTON, self.OnButton)
def OnCheckbox(self, event):
self.button.Enable(event.IsChecked())
def OnButton(self, event):
... show the encryption parameters dialog here ...
# Override this to save the values of the custom controls.
def TransferDataFromCustomControls(self):
# Save the checkbox value, as we won't be able to use it any more
# once this function returns.
self.encrypt = self.checkbox.GetValue()
...
def SomeOtherEventHandlerFunc(self, event):
dialog = wx.FileDialog(None, "Save document", "", "file.my",
"My files (*.my)|*.my", wx.FD_SAVE | wx.FD_OVERWRITE_PROMPT)
# This object may be destroyed before the dialog, but must remain alive
# until ShowModal() returns. So you should hold a separate reference to
# it.
customizeHook = EncryptHook()
dialog.SetCustomizeHook(customizeHook)
if dialog.ShowModal() == wx.ID_OK:
if (customizeHook.encrypt)
... save with encryption ...
else:
... save without encryption ...
dialog.Destroy()
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