MATLAB exe calling in qt cpp

[harsha123]

I am trying to call MATLAB exe in qt cpp using QProcess, when i am trying to call it is showing could not find matlab runtime, but matlab runtime is present in my system and also i have added in the system envirormental variables , if i click on matlab exe manually it is working but from qt it is showing error can anyone guide me how to resolve this issue thanks in advance...

[jsulm]

@harsha123 Try to set process environment using https://doc.qt.io/qt-5/qprocess.html#setProcessEnvironment

[harsha123]

Tried in this way

Getting error like this

[JonB]

@harsha123
If that literal string for the path you put into the environment is supposed to make it work (I don't know that), you need to correct it for a C++ literal string....

[jsulm]

@harsha123 Also, please post code as text, not pictures.
One hint regarding @JonB post: do you know the meaning of \ in a C++ string?

[harsha123]

ha \ is path seperator in cpp, i used all types of slashes but nothing worked it is not able to link the path.

[jsulm]

@harsha123 said in MATLAB exe calling in qt cpp:

ha \ is path seperator in cpp

No, its not. Path separator is OS dependant, has nothing to do with C++. \ is escape character in C++ and most other programming languages. If you want to use it as path separator in a string you have to write it like:

"c:\\something\\...

Please read about \ in C++.

Also, why do you set that path as TMPDIR env variable?! You need to find out what env variables you have to set for Matlab...

[harsha123]

ok, i will try in that way .

[harsha123]

Thank u for the support the problem is because of some internal admin permissions because of that qt was not able access the dll's.