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susufairy铁杆木虫 (正式写手)
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[求助]
call external program in a win32 application
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| I am developing a win32 application using Qt. Right now my application has to call a program that operate an extrenal machine connected to PC using serial port and let the machine to read some optical density data and then export that data to my application. I am using QProcess and it successfully launches that external program. My questions are: how my program ask that external program to perform the menu operations like "read optical density" and "export data" so that my program can get the optical density data. Thanks a lot for the help and nice day! |
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jjdg(金币+1): 感谢参与 2012-03-03 02:29:02
ben_ladeng(专家考核): 2012-03-04 10:41:56
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jjdg(金币+1): 感谢参与 2012-03-03 02:29:02
ben_ladeng(专家考核): 2012-03-04 10:41:56
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There are several ways to build up communications among applications. However, they depend on the functions of the applications, which means you may not be able to talk to a running program when it cannot receive and response to your callings. As to your question, one simple appraoch is to read the files the external program wrote/exported. This is absolutely slow.... Unless you have the source code of the external program or it has the function to set up communications to your codes. |
2楼2012-03-02 20:09:45