How can I make the button clickable on a semi-transparent path geometry which passes all mouse events through?

Question

I need to control behind semi-transparent background with mouse. In detail, my app fills up the whole screen with semi-transparent background and it has got a button on it. I wanted to be able to click on any parts behind the semi-transparent background and the solution for this I found is this: How to create a semi transparent window in WPF that allows mouse events to pass through

With this solution, I was able to click and do everything with mouse behind the background but unfortunately, I cannot click on that button anymore because the button also passed the mouse events through itself.

How can I make the button clickable? Any help would be appreciated. You can try the example app on the provided link above. Thanks

Maybe you can set the e.IsHandled in the click-event of your window to false — Denis Schaf, May 05 '19 at 21:04
You can check MouseOver event and when it's over the button - remove WS_EX_TRANSPARENT style. — montonero, May 06 '19 at 08:48
hi, Do you try using keyboard messages to control behind semi-transparent background? — Strive Sun, May 15 '19 at 07:33
@montonero, It might work but how can I do that? Please let me know if you've already encountered such a problem and solved it — Kevin the minion, May 16 '19 at 09:07
@Strive Sun - MSFT, I am not sure about keyboard events but mouse events for sure — Kevin the minion, May 16 '19 at 09:09
@DenisSchaf, Could you show me how to do it in detail? Thanks — Kevin the minion, May 16 '19 at 09:09
in this case you would have to provide your XAML code so we can see whats actually happening — Denis Schaf, May 16 '19 at 09:12
@Jay I used such approach for a usual Win32 application, not WPF. But I believe this shouldn't be an issue. — montonero, May 16 '19 at 09:19

score 0 · Answer 1 · answered May 31 '19 at 15:35

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I managed to solve the problem myself. The solution was mouse hook. Perhaps, @montonero's idea is right. When mouse is over the desired region, I removed WS_EX_TRANSPARENT.

answered May 31 '19 at 15:35

Kevin the minion

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How can I make the button clickable on a semi-transparent path geometry which passes all mouse events through?

1 Answers1