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Summary

Stores the display affinity setting in kernel mode on the hWnd associated with the window. You can use this to help prevent taking screenshots of your application. See https://devblogs.microsoft.com/oldnewthing/?p=4193/03/10422964.aspx

C# Signature:

[DllImport("user32.dll")]
static extern bool SetWindowDisplayAffinity(IntPtr hwnd, DisplayAffinity affinity);

VB Signature:

Declare Function SetWindowDisplayAffinity Lib "user32.dll" (hwnd As IntPtr, affinity As DisplayAffinity) As Boolean

User-Defined Types:

enum DisplayAffinity : uint
{
   None = 0x00,
   Monitor = 0x01,
   ExcludeFromCapture = 0x11
}

Alternative Managed API:

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Notes:

None.

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Sample Code:

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Documentation

SetWindowDisplayAffinity on MSDN