Bug 19856

Summary: Opacity doesn't work reliably
Product: [Mono] Class Libraries Reporter: eb1
Component: Windows.FormsAssignee: Bugzilla <bugzilla>
Severity: normal CC: lexas, mono-bugs+mono
Priority: ---    
Version: 3.4.0   
Target Milestone: Untriaged   
Hardware: PC   
OS: Linux   
Tags: Is this bug a regression?: ---
Last known good build:
Attachments: Sample program that demonstrates the problem

Description eb1 2014-05-16 12:00:11 UTC
Setting the transparency for a form doesn't really work. You can set the opacity before showing the form, but then it's not possible set opacity=1 later on. If you initially show the form with opacity==1 you can't make it transparent later.
Comment 1 eb1 2014-05-16 12:09:25 UTC
Created attachment 6825 [details]
Sample program that demonstrates the problem

The attached sample program demonstrates the problem. By clicking the + and - buttons the opacity of the form should change, but currently it stays the same.
Comment 2 eb1 2014-05-16 12:52:49 UTC
Suggested fix in PR #1040
Comment 3 Alexis Christoforides 2014-05-20 07:59:03 UTC
Merged to master (256e54e2320c3d62b9e73f23cea3de82c5a64056).