public static List<WinNT.HANDLE> mockEventHandles(WEvtApi wEvtApi, Kernel32 kernel32, List<String> eventXmls) {
    List<WinNT.HANDLE> eventHandles = new ArrayList<>();
    for (String eventXml : eventXmls) {
        WinNT.HANDLE eventHandle = mock(WinNT.HANDLE.class);
        when(wEvtApi.EvtRender(isNull(WinNT.HANDLE.class), eq(eventHandle), eq(WEvtApi.EvtRenderFlags.EVENT_XML),
                anyInt(), any(Pointer.class), any(Pointer.class), any(Pointer.class))).thenAnswer(invocation -> {
            Object[] arguments = invocation.getArguments();
            Pointer bufferUsed = (Pointer) arguments[5];
            byte[] array = Charsets.UTF_16LE.encode(eventXml).array();
            if (array.length > (int) arguments[3]) {
                when(kernel32.GetLastError()).thenReturn(W32Errors.ERROR_INSUFFICIENT_BUFFER).thenReturn(W32Errors.ERROR_SUCCESS);
            } else {
                ((Pointer) arguments[4]).write(0, array, 0, array.length);
            }
            bufferUsed.setInt(0, array.length);
            return false;
        });
        eventHandles.add(eventHandle);
    }
    return eventHandles;
}
 

public static List<WinNT.HANDLE> mockEventHandles(WEvtApi wEvtApi, Kernel32 kernel32, List<String> eventXmls) {
    List<WinNT.HANDLE> eventHandles = new ArrayList<>();
    for (String eventXml : eventXmls) {
        WinNT.HANDLE eventHandle = mock(WinNT.HANDLE.class);
        when(wEvtApi.EvtRender(isNull(), eq(eventHandle), eq(WEvtApi.EvtRenderFlags.EVENT_XML),
                anyInt(), any(Pointer.class), any(Pointer.class), any(Pointer.class))).thenAnswer(invocation -> {
            Object[] arguments = invocation.getArguments();
            Pointer bufferUsed = (Pointer) arguments[5];
            byte[] array = StandardCharsets.UTF_16LE.encode(eventXml).array();
            if (array.length > (int) arguments[3]) {
                when(kernel32.GetLastError()).thenReturn(W32Errors.ERROR_INSUFFICIENT_BUFFER).thenReturn(W32Errors.ERROR_SUCCESS);
            } else {
                ((Pointer) arguments[4]).write(0, array, 0, array.length);
            }
            bufferUsed.setInt(0, array.length);
            return false;
        });
        eventHandles.add(eventHandle);
    }
    return eventHandles;
}
 

/**
 * @return 0 - color in format 0xAARRGGBB, 1 - opaque
 */
public static int[] DwmGetColorizationColor() {
  IntByReference colorRef = new IntByReference();
  IntByReference opaqueRef = new IntByReference();
  WinNT.HRESULT hresult = DwmApi.INSTANCE.DwmGetColorizationColor(colorRef, opaqueRef);
  if(W32Errors.S_OK.equals(hresult)) {
    return new int[] {colorRef.getValue(), opaqueRef.getValue()};
  }
  return new int[2];
}
 

public static boolean DwmIsCompositionEnabled() {
  IntByReference reference = new IntByReference();
  WinNT.HRESULT hresult = INSTANCE.DwmIsCompositionEnabled(reference);
  return W32Errors.S_OK.equals(hresult) && reference.getValue() == 1;
}