[vtkusers] GetMousePosition always gives (0,0)

[polys_poly at hotmail.com]

Hello,

I am writing an application with MFC GUI and simply using 

vtkRenderWindowInteractor* m_pIren = vtkRenderWindowInteractor::New;

.
.
.
.

int mouseX, mouseY; 
m_pIren->GetMousePosition(&mouseX, &mouseY);

and still the coordinates i get are both 0.
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