ImmReleaseContext(this.Handle,hIMC);

public static extern bool ImmReleaseContext(IntPtr hWnd,IntPtr hIMC);

Declare Function ImmReleaseContext Lib "Imm32.dll" (TODO) As TODO

public static extern IntPtr ImmReleaseContext(IntPtr hWnd, IntPtr context);

Declare Function ImmReleaseContext Lib "coredll.dll" (TODO) As TODO

            ImmReleaseContext(hWnd, context);   //Release IMEContext