I'm looking for a UI library for .NET and Mono, something like Gtk#, but with support for 64-bit (on Windows too), and with some widget like WinForm's ListView, with VirtualMode.
I don't want to use WinForms and WPF. Is there any alternative?
Thanks.
On
Do you have a compelling reason to need 64-bit? You could always do your UI with GTK# in 32-bit, but have a backend service installed/running 64-bit. Just a thought on this one. Unless you are dealing with very large sets of data, you may be better off going the 32-bit route (at least in windows).
As already mentioned, there is wxWidgets, as well as a few other UI framework ports as well, but to be honest WinForms and GTK# are the best supported. If you want cross-platform GTK# is your best option currently. There is a more comprehensive list of GUI Toolkits for Mono here.
On
The main reason 64-bit GTK+ & GTK# aren't shipped on Windows is because there hasn't really been much demand. After all, most apps on 64-bit Windows are 32-bit. Some users did put some effort into fixing bugs, so if you have a compelling reason for needing 64-bit on Windows I suggest poking around in the gtk-sharp-list mailing list archives.
Regarding VirtualMode, I'm not familiar with it but it sounds like implementing a custom GTK TreeModel. GTK TreeView uses a model/view split - so for a list view, one typically connects a ListStore (a simple flat implementation of TreeModel) to a TreeView. Alternatively, you may wish to check Banshee's fully managed GTK# ListView, which was designed for virtualized views onto a Sqlite database.
You can try WX Widgets.NET : http://wxnet.sourceforge.net/
Tried it, some years ago, but preferred to go the GTK# route.
Not sure if it supports 64bit, but personally I still prefer to provide 32bit binaries even for deployment on 64bit systems, exactly because lots of infrastructure (native libs specially) isn't still available in 64bit, not only for UI.