Bug 176 - Null-References and wrong values in Gdk.Global.WindowManagerClientWindows
Summary: Null-References and wrong values in Gdk.Global.WindowManagerClientWindows
Alias: None
Product: Gtk#
Classification: Mono
Component: gtk-sharp ()
Version: 2.x
Hardware: PC Linux
: --- normal
Target Milestone: ---
Assignee: Bugzilla
Depends on:
Reported: 2011-08-04 08:02 UTC by Nicolas Pöhlmann
Modified: 2016-05-10 01:59 UTC (History)
5 users (show)

Is this bug a regression?: ---
Last known good build:

Patch howto resolve the bug (435 bytes, patch)
2011-08-04 08:02 UTC, Nicolas Pöhlmann

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Description Nicolas Pöhlmann 2011-08-04 08:02:00 UTC
Created attachment 66 [details]
Patch howto resolve the bug

The function Gdk.Global.WindowManagerClientWindows returns false references.

The problem is located in gdk/Global.custom which uses the wrong IntPtr.Size to
return the window(s).

Reproducible: Always

Steps to Reproduce:
foreach (Gdk.Window win in Gdk.Global.WindowManagerClientWindows)
    if (win != null )
    } else {        

Actual Results:  
The function Gdk.Global.WindowManagerClientWindows returns only every second
window and after the third one, it only returns null-references.

Expected Results:  
Just get the references of all running Gdk-Windows.

The patch solved the problem for me on and all gdk-windows are now returned
Comment 1 Jeffrey Stedfast 2011-08-05 16:10:50 UTC
Is this on 64bit?
Comment 2 Nicolas Pöhlmann 2011-08-05 18:48:05 UTC
yes it's on 64bit platform, tested on gentoo and fedora
Comment 3 Antonius Riha 2014-09-07 08:44:13 UTC
I've opened a pull request with a fix for this issue: https://github.com/mono/gtk-sharp/pull/117
Comment 4 Marius Ungureanu 2016-04-17 19:24:33 UTC
Fixed as the pull request is merged now.
Comment 5 Andres G. Aragoneses 2016-05-10 01:59:54 UTC
Antonius: can you forward port the fix to master branch?