Window's background transparency behavior problem

Oct 8, 2013 at 9:45am

Window's background transparency behavior problem

Hi.

I’ve built a patch which has the following functionality:
- Window without titlebar, menu, scroll, etc. Just a “square without any standard user interface element;
- The background color of the patcher window is 100% transparent (opacity 0);
- The window always stays on top through the “topmost 1″ message, even when interacting with other applications (Max in background).

This is all working well.

Problem:
In Windows, if I click inside the patcher window in a blank section (no Max elements), I can interact with the windows/applications beneath it (e.g, browser). Great!
In Mac OS X, when I do the same, the mouse clicks don’t “pass through” to the other applications behind the window.

I post the patch as an attachment and would appreciate if you guys can confirm this problem.

By the way, the tested systems were:
Max 6.1.3 (32 bit) on Mac OS X 10.6.8 and Windows 7 Pro

I was really counting on this functionality for my application and initially built it in my windows computer. When I tried it on my MacBook Pro I came across this eventual problem.

Can anybody confirm this behavior? Btw, to close the patch just click on “wclose”.

Thanks in advance!

#267445
Oct 10, 2013 at 6:52am

OK, I’ll assume it’s a bug and fill a bug report form then. I’ll post back the response for a future search on the subject.

#267687
Oct 17, 2013 at 7:11am

I know I’m talking to myself here, but for future reference, I reported the problem and the response was that the difference between Mac OS X and Windows behaviors when clicking on a 100% transparent portion of a window was due to the operating system implementations, and it really seemed to me that no “workaround” was planned in the immediate future. Obviously, it is possible on the Mac (http://www.cocoawithlove.com/2008/12/drawing-custom-window-on-mac-os-x.html) but it’s not a priority or maybe even a concern.

So, right now, if you click on a transparent portion of a window,
in Mac OS X (tested with 10.6.8), Max “captures” the click and doesn’t let you interact with the applications beneath it;
in Windows (tested with 7 Pro 64) Max doesn’t capture the click and lets you interact with the applications beneath it (great).

I would wish for more features consistency between OSes when trying to build applications though… this would be very useful for an application I’m doing. Anyway, non-rectangular windows are out of the question…

#268283

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