[PyQt] help with printing

[BLACK HAWK]

hi everyone,

i'm having problem in printing 

first:
    my program show to the user 10 pages in QPrintPreviewWidget and when he press 'print it' button it 
    prints only the pages from 5 to 7 but my code keep printing all pages
second:
    why my application paintRequested signal emitted after i press 'print it' button that maks it emitted towic
    first time when my application starts and second when i press 'print it' button

i'm attaching my sample code i hope some one can help me on this problem

thanks in advance...


      
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