net30 
namespace System.Windows.Forms
{
    [ClassInterface(ClassInterfaceType.AutoDispatch)]
    [ComVisible(true)]
    [DefaultEvent("Enter")]
    [DefaultProperty("Text")]
    [Designer("System.Windows.Forms.Design.GroupBoxDesigner, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
    public class GroupBox : Control
    {
        [Browsable(false)]
        [EditorBrowsable(EditorBrowsableState.Advanced)]
        public event MouseEventHandler MouseDown;
    }
}
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.NET 5.06.07.08.09.0
.NET Core 3.03.1
.NET Framework 1.01.12.03.03.54.04.54.5.14.5.24.64.6.14.6.24.74.7.14.7.24.84.8.1
Information specific to net30
Assembly

System.Windows.Forms , Version=2.0.0.0, PublicKeyToken=b77a5c561934e089

Referencing

Your project needs to set <UseWindowsForms>True</UseWindowsForms>.

Platform Restrictions

This framework does not have platform annotations.

  • Built-in API
  • Package-provided API