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Editorial Team
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Asked: 2026-05-16T17:38:22+00:00

I am using Qt webkit Jambi API’s to convert HTML to PDF. My target

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I am using Qt webkit Jambi API’s to convert HTML to PDF.

My target is to create a jar for above conversion so that it could be used in a multithreading environment, but since QWebPage and QWebframe (QT webkit) are GUI classes, therefore the jar classes cannot be initialized from child threads.

So i am stuck as i don’t know how to work around this problem.

Also i am a novice in QT , can anyone provide good reference about QT application’s lifecycle, event loops and related stuff.

thanks in advance.

Ashish

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1 Answer

  1. Editorial Team

    My primary task was to get html to pdf conversion for printing the pdf.

    I tried to get QT jambi (QT webkit C++ api also) to work in multithreaded environment but could not.

    My final solution was as follows:

    I used ‘wkhtmltopdf’ native binary from here,

    wrote a java wrapper capturing the standard input and output streams.

    Initialized the ‘wkhtmltopdf’ binary for each java thread that required the html to pdf conversion.

    Also i never worked on erjiang’s advice because by then I had moved out of the task and never got time to work on his advice.

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