Using function from the external library

[hardikgarg19]

Hello,
I am using an external C library in Qt project. I have included the lib in the .pro file and header file is also included in the project. Qt is able to auto-detect the function name as well. There are no build errors. But, the app crashes while I try to run the code.

Below is the compiler output:
"Starting C:\Qt\Projects\ISG\Legacy\build-Test1-Desktop_Qt_5_11_0_MSVC2015_32bit-Release\release\Test1.exe...
The program has unexpectedly finished.
The process was ended forcefully.
C:/Qt/Projects/ISG/Legacy/build-Test1-Desktop_Qt_5_11_0_MSVC2015_32bit-Release/release/Test1.exe crashed."

How can I solve this issue?

[mrjj]

Hi
if you start it with f5 for debug, does it crash before even reaching main() ?

[hardikgarg19]

@mrjj Thank you for your reply.
I can not use the debug mode as I don't have the debug dll for the library.
I am getting the message as cannot open file "libraryName.lib".

[mrjj]

@hardikgarg19
Hi
The reason i ask is that it crashes before main if its due to issues with the DLL.
in the folder for the library, there is both a LIB and DLL file so its
a dynamic library ?

Can you show your .pro file just for check.

• cannot open file "libraryName.lib".
  In the compiler output or where ?

[hardikgarg19]

@mrjj Yes, its a dynamic library. The problem is solved now. My dll and lib files were in different folders. Now, I have copied the dll into the lib folder and I am able to run the app.
Thank you so much for your help @mrjj.