Hi Robin,
Thank you!
I simplified the sample code for your reference.
Now there are three buttons on the sample panel as the follows,
- GenToggleButton 2. GenBitmapToggleButton 3. GenBitmapTextButton
In sample app I registered a EVT_BUTTON handler for GenToggleButton,
and in this handler(not in update_ui handler), a SingleChoiceDialog is created with ShowModal().
and I registered a EVT_UPDATE_UI handler for GenBitmapToggleButton,
the handler will be called every second by calling “wx.UpdateUIEvent.SetUpdateInterval(1000)”.
Now the issue is, when I clicked the GenToggleButton and the SingleChoiceDialog is shown in Modal mode,
then I found the EVT_UPDATE_UI handler(on_update_ui) for GenBitmapToggleButton is stll being called,
and the IsEnabled() result for GenBitmapToggleButton and GenBitmapTextButton are False,
which means ShowModal of SingleChoiceDialog will disable the buttons on the panel.
But if I changed to show MessageDialog in the event handler of GenToggleButton,
I found the on_update_ui handler for GenBitmapToggleButton is not being called at all,
so the status of the buttons are not affected by ShowModal() at this time.
According to the wx api docs, “A modal dialog blocks program flow and user input on other windows until it is dismissed”,
but here for the case of SingleChoiceDialog, we can see the on_update_ui of the button from the parent panel is still
being called. and furthermore, the status of the buttons are also affected(changed to be disabled).
I checked my application in python 2.4(wxPython version is 2.8), I found in the the similar case for SingleChoiceDialog,
the on_update_ui is called but the status of the buttons will not be disabled.
If I want my button status keeps not being affected by ShowModal at wxPython4.0.5a1,
what should I do? Thank you so much!
在 2019年5月21日星期二 UTC+8上午12:44:26，Robin Dunn写道：
GenericButtons3.py (3.25 KB)
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On Monday, May 20, 2019 at 8:26:44 AM UTC-7, Kedodo wrote:
Hi,
I am porting some application from python 2.4 to 3.7, and in python 3.7(wxPython version is 4.0.5a1.dev4094) I noticed when I created a Modal dialog(SingleChoiceDialog), in the event handler of EVT_UPDATE_UI of the parent panel, some buttons will be disabled, and after the dialog is closed, the buttons will be enabled again.
and if I created a Modal MessageDialog, the buttons will not be disabled, and actually the event handler of EVT_UPDATE_UI will not be called during the period when the dialog is opened.
In python 2.4(wxPython version is 2.8), I noticed the buttons will not be disabled in the event handler of EVT_UPDATE_UI when SingleChoiceDialog or MessageDialog is opened.
Is this caused by some issue in wxPython 4.0.5a1? and if I want the buttons not be affected by EVT_UPDATE_UI handler when ShowModal is called, just like the behavior in wxPython 2.8, what should I do? Any suggestions will be appreciated!
P.S. Please check the attached file for details, I created it based on wxPython demo. When “Toggle Button” is clicked, a SingleChoiceDialog will be created with ShowModal, then some buttons are disabled in “on_update_ui”. After the dialog is closed, the buttons will be enabled again when “on_update_ui” is called.
I’m not sure I understand your issue. Please create a small standalone sample with just enough to demonstrate the problem and without all the extra widgets and such. Also, I don’t think an update_ui handler is a good place to be showing a modal dialog, those events are intended to be very lightweight and just do state changes of the widgets they are bound to. You may have better results if you just trigger the dialog functionality to be run later with a wx.CallAfter or similar.
–
Robin