Gets a value indicating whether the form can use all windows and user input events without restriction.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
The property determines whether the AllWindows permission is granted. This property is set at run time in the form's constructor, and is cached for the lifetime of the form. Windows Forms applications running in partial trust cannot circumvent this check, as the common language runtime ensures that the parent constructor is always called in partial trust.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.