hi everyone,

in my program, i need to call an external command ("dmtxread") to decode a 2D barcode. and display the result.

i can achieve above what i need by using system()
Qt Code: 
  1. system("dmtxread /home/cz/Webcam/abc.jpg >> /home/cz/Webcam/a.txt");
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as you can see, i sent result into a text file (a.txt). after that, i used QFile read the content of a.txt as a string. then, display this string.

i am just wondering is there any other way i can save the result to a buffer, or a string, directly, instead of creating a file to store the result, and read the content out.

can anyone give me a hint or suggestion, please?
thank in advance.