This works, although I would be still curious if the update could be
directly triggered. Moreover, the Modified() function should be
invoked by SetText() or SetProperty() IMO.
textOverlay->SetText("hallo");
textOverlay->Modified();
On 14 January 2015 at 15:25, Miklos Espak <[email protected]> wrote:
> Hi,
>
> is it possible to change the text of a text overlay and update the
> screen or you need to create a new TextOverlay2D instance any time
> when you want to change the text.
>
> I want to show the pixel intensities at the crosshair as an
> annotation, but cannot update the text.
>
> I tried these so far, with no success:
>
> for (int i = 0; i < 3; ++i)
> {
> mitk::BaseRenderer* renderer = m_RenderWindows[i]->GetRenderer();
> mitk::OverlayManager::Pointer overlayManager =
> renderer->GetOverlayManager();
>
> mitk::TextOverlay2D::Pointer textOverlay = m_TextOverlays[i];
> textOverlay->SetText("hallo");
> textOverlay->Update(renderer);
> renderer->RequestUpdate();
> mitk::AbstractOverlayLayouter::Pointer layouter =
> overlayManager->GetLayouter(renderer,
> mitk::Overlay2DLayouter::STANDARD_2D_BOTTOMRIGHT());
> layouter->RemoveOverlay(textOverlay);
> layouter->AddOverlay(textOverlay);
> overlayManager->UpdateOverlays(renderer);
> }
>
>
> The text was "hello" initially, and it does not change to "hallo".
>
> Is it a bug or am I missing something?
>
> Thanks,
> Miklos
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