[vtkusers] inconsistent dll linkage

[Leonardo Soto M.]

David,

You are right. I was using the next class definition:
class VTK_RENDERING_EXPORT ObjectInteractorStyle : public vtkInteractorStyle

Now I defined the macro shown below and it works!

#define OBJECT_INTERACTOR_STYLE_EXPORT __declspec( dllexport )
class OBJECT_INTERACTOR_STYLE_EXPORT ObjectInteractorStyle : public 
vtkInteractorStyle

Thanks for your help!

Leonardo


----- Original Message ----- 
From: "David Cole" <david.cole at kitware.com>
To: "Leonardo Soto M." <leonardosoto at udec.cl>
Cc: <vtkusers at vtk.org>
Sent: Friday, September 23, 2005 12:09 PM
Subject: Re: [vtkusers] inconsistent dll linkage


> I'm gonna guess that your class declaration in your header file looks like 
> this:
> class VTK_RENDERING_EXPORT ObjectInteractorStyle : public 
> vtkInteractorStyle
>
> The problem is that VTK_RENDERING_EXPORT only works for classes that are 
> built into vtkRendering.dll. (This is controlled by the definition of 
> vtkRendering_EXPORTS.)
>
> You need to define your own similar macro that resolves to 
> __declspec(dllexport) when being built into your dll, 
> __declspec(dllimport) when being consumed by a client outside your dll and 
> nothing when built on a non-Windows system or when built with static lib 
> linkage.
>
> You can use a similar technique to that found in Common/vtkWin32Header.h 
> using your own lib name in place of vtkRendering. i.e., if your lib is 
> named MyLib, you'd test for MyLib_EXPORTS which is defined automatically 
> for you by CMake when building your library as shared on Windows.
>
>
> Hope this helps,
> David
>