* GTKDemo1.csproj: 添加了GTK的用户界面
修改的文件如下：
* TaskFramework.sln:
* Program.cs:
* MainWindow.cs:
* gui.stetic:
* generated.cs:
* gui.stetic:
* MainWindow.cs:
* MonoGtkDemo.csproj:
* generated.cs:
* MainWindow.cs:
* AssemblyInfo.cs: