Create a matrix from a .csv file
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Try a clean build. 
 It seems correct.
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I think we did the same so not sure why you cannot compile. 
  
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Wairt you have odd error That in from of MainWindow is wrong! and u use picture again so cant paste .  That is not legal syntax 
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@AliM93 
 That i dont know why.
 works with Qmake.can you try my project ? https://www.dropbox.com/s/s0oc2poey2b95pq/GridWidgetApp.zip?dl=0 
