why winuser.h getting error when using on CLR Class Library?

[gudegjawa]

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i try to create CLR Class library like this

#include "Stdafx.h"
#include "Image.h"
#include <msclr\marshal_cppstd.h>

namespace Vas
{
/// <summary>
/// Initializes a new instance of the <see cref="Image"/> class.
/// </summary>
Image::Image(int width, int height)
{
_mat = new cv::Mat(height, width, CV_8UC4);
}

///
Image::Image(System::String^ path)
{
std::string str = msclr::interop::marshal_as<std::string>(path);
_mat = new cv::Mat();
(*_mat) = cv::imread(str);
}

/// <summary>
/// Finalizes an instance of the <see cref="Image"/> class.
/// </summary>
Image::~Image()
{
if (_isDisposed)
return;

this->!Image();
_isDisposed = true;
}

Image::!Image()
{
delete _mat;
}

/// <summary>
/// Sets the specified data.
/// </summary>
/// <param name="data">The data.</param>
void Image::Set(array<unsigned char>^ data)
{
pin_ptr<unsigned char> ptr = &data[0];
unsigned char* src = ptr;
int size = _mat->rows * _mat->step;
memcpy_s(_mat->data, size, src, size);
}

///
void Image::Save(System::String^ path)
{
std::string str = msclr::interop::marshal_as<std::string>(path);
cv::imwrite(str, *_mat);
}
}
when i build this code, winuser.h is error like this:

error C2059: syntax error : ')' error C2059: syntax error : ')'

error C2059: syntax error : ')'

error C2059: syntax error : ')'

error C2143: syntax error : missing ';' before '__stdcall'

error C2143: syntax error : missing ';' before '__stdcall'

error C2146: syntax error : missing ')' before identifier 'hDesktop'

error C2146: syntax error : missing ')' before identifier 'hDesktop'

error C2146: syntax error : missing ')' before identifier 'hDesktop'

error C2146: syntax error : missing ')' before identifier 'hDesktop'

error C2146: syntax error : missing ';' before identifier 'hdesk'

error C2377: 'HDESK' : redefinition; typedef cannot be overloaded with any other symbol error C2440: 'initializing' : cannot convert from 'HDESK' to 'BOOL'

error C2440: 'initializing' : cannot convert from 'HDESK' to 'BOOL'

error C2440: 'initializing' : cannot convert from 'HDESK' to 'BOOL'

error C2440: 'initializing' : cannot convert from 'HDESK' to 'BOOL'
i try to found winuser.h or windows.h and i want to remove from my file, but i cannot foud it.

can come one tell me, why the error is come? and how to solve it? i'm already search on google and still cannot found the answer