C# Signature:

[DllImport("user32.dll", SetLastError=true, CharSet=CharSet.Auto)]
static extern bool SendMessageCallback(IntPtr hWnd, uint Msg, UIntPtr wParam,
    IntPtr lParam, SendMessageDelegate lpCallBack, UIntPtr dwData);

User-Defined Types:

None.

Notes:

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Tips & Tricks:

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Sample Code:

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Alternative Managed API:

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