system() call external command, and get command resuld

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()

Code:

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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.

use QProcess and read the standard output into the string.

why you double post? there is no need for it. Already answered in newbie post.

Quote:

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Originally Posted by MrDeath

why you double post? there is no need for it. Already answered in newbie post.

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thanks Mr death, i just want to make sure someone will read my post :o

thanks for your reply. i will take a look QProcess

dont worry.. a single topic will attract more ppl. And will have much more discussion. So never duplicate your topic.