[MonoDevelop] Error compiling GTK# apps with Mono/MonoDevelop on Windows

[jmalcolm]

Here is the build output from a simple, mostly auto-generated app that
compiles fine if I specify .NET but fails as below if I specify Mono:

Building: HelloGTK (Debug)

Building Solution HelloGTK

Building: HelloGTK (Debug)

Performing main compilation...

E:\Program Files\Mono-2.4.2.3\bin\gmcs.bat /noconfig "/out:E:\Documents and
Settings\Administrator\My
Documents\Projects\HelloGTK\HelloGTK\bin\Debug\HelloGTK.exe"
 "/r:System.dll"
 "/r:Mono.Posix.dll"
 /nologo
 /warn:4
 /debug:+
 /debug:full
 /optimize-
 /codepage:utf8
 "/define:DEBUG"
 
 /t:exe
 "/res:E:\Documents and Settings\Administrator\My
Documents\Projects\HelloGTK\HelloGTK\gtk-gui\gui.stetic,gui.stetic"
 "E:\Documents and Settings\Administrator\My
Documents\Projects\HelloGTK\HelloGTK\gtk-gui\generated.cs"
 "E:\Documents and Settings\Administrator\My
Documents\Projects\HelloGTK\HelloGTK\MainWindow.cs"
 "E:\Documents and Settings\Administrator\My
Documents\Projects\HelloGTK\HelloGTK\gtk-gui\MainWindow.cs"
 "E:\Documents and Settings\Administrator\My
Documents\Projects\HelloGTK\HelloGTK\Main.cs"
 "E:\Documents and Settings\Administrator\My
Documents\Projects\HelloGTK\HelloGTK\AssemblyInfo.cs"
 
    Try using -pkg:gtk-sharp

Compilation failed: 1 error(s), 0 warnings

E:\Documents and Settings\Administrator\My
Documents\Projects\HelloGTK\HelloGTK\MainWindow.cs(2,7): error CS0246: The
type or namespace name `Gtk' could not be found. Are you missing a using
directive or an assembly reference?


Build complete -- 1 error, 6 warnings


---------------------- Done ----------------------


The reference 'gtk-sharp, Version=2.12.0.0, Culture=neutral,
PublicKeyToken=35e10195dab3c99f' is not valid for the target framework of
the project.
The reference 'gdk-sharp, Version=2.12.0.0, Culture=neutral,
PublicKeyToken=35e10195dab3c99f' is not valid for the target framework of
the project.
The reference 'glib-sharp, Version=2.12.0.0, Culture=neutral,
PublicKeyToken=35e10195dab3c99f' is not valid for the target framework of
the project.
The reference 'glade-sharp, Version=2.12.0.0, Culture=neutral,
PublicKeyToken=35e10195dab3c99f' is not valid for the target framework of
the project.
The reference 'pango-sharp, Version=2.12.0.0, Culture=neutral,
PublicKeyToken=35e10195dab3c99f' is not valid for the target framework of
the project.
The reference 'atk-sharp, Version=2.12.0.0, Culture=neutral,
PublicKeyToken=35e10195dab3c99f' is not valid for the target framework of
the project.
Build: 1 error, 6 warnings

=====================================

Do not hassle me about "Administrator".  I thought maybe it might work from
this account.  Old school Windows...

Here is the output when I try to build the same project on .NET:

Building: HelloGTK (Debug)

Building Solution HelloGTK

Building: HelloGTK (Debug)

Performing main compilation...

E:\WINNT\Microsoft.NET\Framework\v2.0.50727\csc.exe /noconfig
"/out:E:\Documents and Settings\Administrator\My
Documents\Projects\HelloGTK\HelloGTK\bin\Debug\HelloGTK.exe"
 "/r:System.dll"
 "/r:E:\Program Files\GtkSharp\2.12\lib\Mono.Posix\Mono.Posix.dll"
 "/r:E:\Program Files\GtkSharp\2.12\lib\gtk-sharp-2.0\gtk-sharp.dll"
 "/r:E:\Program Files\GtkSharp\2.12\lib\gtk-sharp-2.0\gdk-sharp.dll"
 "/r:E:\Program Files\GtkSharp\2.12\lib\gtk-sharp-2.0\glib-sharp.dll"
 "/r:E:\Program Files\GtkSharp\2.12\lib\gtk-sharp-2.0\glade-sharp.dll"
 "/r:E:\Program Files\GtkSharp\2.12\lib\gtk-sharp-2.0\pango-sharp.dll"
 "/r:E:\Program Files\GtkSharp\2.12\lib\gtk-sharp-2.0\atk-sharp.dll"
 /nologo
 /warn:4
 /debug:+
 /debug:full
 /optimize-
 "/define:DEBUG"
 
 /t:exe
 "/res:E:\Documents and Settings\Administrator\My
Documents\Projects\HelloGTK\HelloGTK\gtk-gui\gui.stetic,gui.stetic"
 "E:\Documents and Settings\Administrator\My
Documents\Projects\HelloGTK\HelloGTK\gtk-gui\generated.cs"
 "E:\Documents and Settings\Administrator\My
Documents\Projects\HelloGTK\HelloGTK\MainWindow.cs"
 "E:\Documents and Settings\Administrator\My
Documents\Projects\HelloGTK\HelloGTK\gtk-gui\MainWindow.cs"
 "E:\Documents and Settings\Administrator\My
Documents\Projects\HelloGTK\HelloGTK\Main.cs"
 "E:\Documents and Settings\Administrator\My
Documents\Projects\HelloGTK\HelloGTK\AssemblyInfo.cs"
 /fullpaths
 
Build complete -- 0 errors, 0 warnings

---------------------- Done ----------------------

Build successful.


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