[vtkusers] Mouse cursor resetting itself after call to SetCurrentCursor

[David Cole]

The culprit in this case turned out to be the default WNDPROC for Win32
windows. We were not handling WM_SETCURSOR in the vtkWin32OpenGLRenderWindow
WNDPROC, so the default WNDPROC was resetting the cursor to the default on
every mouse move. (WM_SETCURSOR messages are generated frequently as you
move the mouse around...)
To fix this issue, I added a WM_SETCURSOR handler to VTK:
    /cvsroot/VTK/VTK/Rendering/vtkWin32OpenGLRenderWindow.cxx,v  <--
 vtkWin32OpenGLRenderWindow.cxx
    new revision: 1.158; previous revision: 1.157

It is now on my list for merging into the VTK-5-2 branch and it will
eventually appear in the VTK and ActiViz .NET 5.2.1 patch releases.


Thanks,
David Cole


On Tue, Sep 9, 2008 at 5:06 PM, Sarah Macumber <
S.Macumber at questreliability.com> wrote:

>  Hi,
>
>
>
> I am having difficulty with setting the mouse cursor on the vtkRenderWindow
> in Dot Net. The cursor changes but then it is immediately reset back to the
> default.
>
>
>
> GraphicsWindowRenderWindow.SetCurrentCursor(4);
>
>
>
> Does anyone know why the cursor would be reset?  It is still reset even
> with the following code added :
>
>
>
> vtkObserverMediator om = GraphicsWindowInteractor.GetObserverMediator();
>
> om.SetInteractor(GraphicsWindowInteractor);
>
>
> om.RemoveAllCursorShapeRequests((vtkInteractorObserver)GraphicsWindowInteractorStyle);
>
> int i = om.RequestCursorShape(GraphicsWindowInteractorStyle, 4);
>
>
>
> Thanks in advance,
>
> Sarah
>
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