[Mono-list] Struggling with wxWindows wrapper...

Paolo Molaro lupus@ximian.com
Tue, 7 Jan 2003 17:49:47 +0100

On 01/07/03 J. Perkins wrote:
> I am looking into writing a .NET wrapper for wxWindows and I am running
> into what I think is a library version problem on Linux. I am not very
> experienced with Linux and am not sure how to resolve the issue.
> I have created an .so which is statically linked to wxWin. The .so has a
> single function which creates and runs a simple wxApp. I wrote a small C
> app to load the .so and call the function, and that works okay. When I
> try to write an equivalent C# app using [DllImport], I get a
> NullReferenceException in the .so. I have traced this down to a call to
> gtk_init(). My suspicion is that wxWin and Mono are linking to different
> versions of gtk.
> `wx-config --libs` reports:
> -L/usr/local/lib    /usr/local/lib/libwx_gtk-2.4.a -L/usr/lib
> -L/usr/X11R6/lib -lgtk -lgdk -rdynamic -lgmodule -lgthread -lglib
> -lpthread -ldl -lXi -lXext -lX11 -lm -lpng -ljpeg -ltiff -lz -ldl -lm

It looks like your version of wxwindows uses gtk+ (and glib) 1.2/1.4, but
you need to install the new one that uses Gtk+ (and Glib) 2.0.
Version 2.4 should support Gtk+ 2.0.


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