`.
The advice is to refactor my code to isolate any VTK code to files built without /clr, but honestly I don’t see how to do that yet - to say the least it will be a major refactoring if it’s possible at all.
Has anyone else hit up against this? It seems like it would be pretty commonplace for anyone using C++/CLI. Can anyone suggest a straightforward workaround?
---
### Author:  [@ben.boeckel](https://discourse.vtk.org/u/ben.boeckel)
#### Post date: [March 30, 2023, 9:42pm UTC](https://discourse.vtk.org/t/std-mutex-incompatible-with-c-cli/11050/2 "2023-03-30T21:42:57Z")
It looks like it comes from `vtkAbstractTransform.h`. Luckily, they are `private`, so moving them to an implementation class to hide the header include would suffice. But that’s unlikely to land until 9.3.
---
### Author:  [@stavbodik](https://discourse.vtk.org/u/stavbodik)
#### Post date: [May 15, 2023, 1:30pm UTC](https://discourse.vtk.org/t/std-mutex-incompatible-with-c-cli/11050/3 "2023-05-15T13:30:53Z")
I can see the same with in version 9.2.6
```
is not supported when compiling with /clr or /clr:pure.
```
Is it also fixed ?
I found :
[https://gitlab.kitware.com/vtk/vtk/-/merge\_requests/10106](https://gitlab.kitware.com/vtk/vtk/-/merge_requests/10106)
- Changes merged into master with [5e6ab676]
---
### Author:  [@stavbodik](https://discourse.vtk.org/u/stavbodik)
#### Post date: [May 15, 2023, 3:29pm UTC](https://discourse.vtk.org/t/std-mutex-incompatible-with-c-cli/11050/4 "2023-05-15T15:29:21Z")
Actually I tested the fix, there is still error because
```
#include
```
Is still exist in vtkAbstractTransform.h 🫢
---
### Author:  [@macadata](https://discourse.vtk.org/u/macadata)
#### Post date: [June 7, 2023, 9:42pm UTC](https://discourse.vtk.org/t/std-mutex-incompatible-with-c-cli/11050/5 "2023-06-07T21:42:04Z")
FWIW…
I added a temporary wrapper class to my C++/CLI project to avoid #including vtkTransform.h directly. The code is below. I set the compiler option for that wrapper class to be non-managed (“No Common Language RunTime Support”). Then all my managed code uses this wrapper class. YMMV on the methods you have to expose through the wrapper… I exposed just the ones I needed. In the end, when this is fixed in VTK 9.3 (or whatever), I’ll just revert back from using vtkTransformWrapper instances to vtkTransform instances.
vtkTransformWrapper.h:
```auto
#pragma once
class vtkTransform;
class vtkProp3D;
class vtkCamera;
class vtkTransformWrapper
{
public:
vtkTransformWrapper();
~vtkTransformWrapper();
void Delete();
static vtkTransformWrapper* New();
void Translate(double x, double y, double z);
void Scale(double x, double y, double z);
void PostMultiply();
void RotateWXYZ(double angle, double x, double y, double z);
vtkTransform* GetTransform();
void SetPropUserTransform(vtkProp3D* prop);
void ApplyCameraTransform(vtkCamera* cam);
protected:
vtkTransform* _theTransform = nullptr;
};
```
vtkTransformWrapper.cpp
```auto
#include "stdafx.h"
#include "vtkTransformWrapper.h"
#include "vtkTransform.h"
#include "vtkProp3D.h"
#include "vtkCamera.h"
vtkTransformWrapper::vtkTransformWrapper()
{
_theTransform = vtkTransform::New();
}
vtkTransformWrapper::~vtkTransformWrapper()
{
if (_theTransform != nullptr)
{
_theTransform->Delete();
_theTransform = nullptr;
}
}
void vtkTransformWrapper::Delete()
{
delete this;
}
vtkTransformWrapper* vtkTransformWrapper::New()
{
return new vtkTransformWrapper();
}
void vtkTransformWrapper::Translate(double x, double y, double z)
{
if (_theTransform != nullptr)
{
_theTransform->Translate(x, y, z);
}
}
void vtkTransformWrapper::Scale(double x, double y, double z)
{
if (_theTransform != nullptr)
{
_theTransform->Scale(x, y, z);
}
}
void vtkTransformWrapper::PostMultiply()
{
if (_theTransform != nullptr)
{
_theTransform->PostMultiply();
}
}
void vtkTransformWrapper::RotateWXYZ(double angle, double x, double y, double z)
{
if (_theTransform != nullptr)
{
_theTransform->RotateWXYZ(angle, x, y, z);
}
}
vtkTransform* vtkTransformWrapper::GetTransform()
{
return _theTransform;
}
void vtkTransformWrapper::SetPropUserTransform(vtkProp3D* prop)
{
prop->SetUserTransform(_theTransform);
}
void vtkTransformWrapper::ApplyCameraTransform(vtkCamera* cam)
{
cam->ApplyTransform(_theTransform);
}
```