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<p>Hi all,</p>
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<p>I recently tested the example <span>RenderWindowNoUiFile from VTK in Mac ,and found the renderwindow only occupies the left-bottom quarter of the QVTKWidget (shown in the attached image). I know someone mentioned this issue and you can avoid it by using
"<span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px;">Open in Low </span><span class="highlight" id="0.8729027861191831" name="searchHitInReadingPane" style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px;">Resolution</span>".
But with a very good high(retina) resolution mac computer, you can only open a Qt-vtk-dependent application in "Low Resolution" and get a blurry GUI, which seems not ok to users who are using high resolution mac computer. I was wondering if vtk developers
will fix this issue in the nearest future.</span></p>
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<p>By doing some web search, I know the reason is: <span>In Hidpi (such as retina resolution in macbook pro), 1x1 pixel becomes 2x2 pixels. Qt can recognize it, so the widget size is right, but vtk can't, so vtkRenderWindow only occupies a quarter of the widget
size. I tried to modify the source code of QVTKWidget class by doubling the size of vtkRenderingWindow in the QVTKWidget, </span><span style="font-size: 12pt;">but it did't change anything. So it's not so straightforward as I expected. Can anyone give me
some suggestion about how to fix the issue and what classes I need to modify?</span></p>
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<p><span style="font-size: 12pt;">Thanks a lot!</span></p>
<p><span style="font-size: 12pt;">Hongzhi</span></p>
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