C# Signature:

[DllImport("ntdll.dll", SetLastError=true)]
static extern IntPtr NtQueueApcThreadEx(IntPtr ThreadHandle, UInt32 UserApcReserveHandle, IntPtr ApcRoutine, IntPtr ApcArgument1, IntPtr ApcArgument2, IntPtr ApcArgument3)

User-Defined Types:

None.

Notes:

ThreadHandle : handle to any Thread Object, including caller's thread.

UserApcReserveHandle : enum between QUEUE_USER_APC_FLAGS_NONE, QUEUE_USER_APC_FLAGS_SPECIAL_USER_APC and QUEUE_USER_APC_FLAGS_MAX_VALUE.

Currently, only QUEUE_USER_APC_FLAGS_SPECIAL_USER_APC is supported.

ApcRoutine : entry point to user APC routine.

ApcArgument1, ApcArgument2, and ApcArgument3 are optional and could be Zero.

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