qt4.8.6 with mac10.10-Qt applications are blurry on Retina

vilas

hi ,all!
my applications using Qt4.8.6 are not rendering correctly on a MacBookPro with Retina screen.

After patch for qt4.8.6, the problem is still exsists. here is the patch, https://codereview.qt-project.org/#/c/54636/

vilas

i have fixed the info.plist of the qt application like so :
<key>NSPrincipalClass</key>
<string>NSApplication</string>
<key>NSHighResolutionCapable</key>
<true/>

Does someone have same problem? Thanks for your help!!

mmirsky

I recently did this with Qt5.4.1. I know Qt added a lot of high-resolution support in 5.4, and I'm not sure if this included changes for macosx. So, my experience may not match yours.

I had to add similar keys to my Info.plist

<key>NSPrincipalClass</key>
<string>NSApplication</string>
<key>NSHighResolutionCapable</key>
<string>True</string>

IIRC, simply modifying the keys after the fact didn't work in my case (I think some type of caching occurs - see 5th comment as a reference). I had to rebuild my app with the new Info.plist before changes took place.