@JonB Thank you for correct direction. I will modify my code and use it finished Signal for updating dialog box.

Hi,

With help of our senior Engineer. I am able to solve this issue. He change the binary path of libSquidStateLibrary.1.dylib into libChargeDischarge1.dylib and .app file.

Inside the bundle my library location at _Squidstate.app/squidstatelibrary/libSquidStateLibrary.1.dylib

//change Binary path in Plugin

install_name_tool -change libSquidStateLibrary.1.dylib @executable_path/squidstatelibrary/libSquidStateLibrary.1.dylib ./../../out/Release/_SquidStat/_SquidStat.app/Contents/MacOS/prebuilt/libChargeDischarge1.dylib

// change binary path in app

install_name_tool -change libSquidStateLibrary.1.dylib @executable_path/squidstatelibrary/libSquidStateLibrary.1.dylib ./../../out/Release/_SquidStat/_SquidStat.app/Contents/MacOS/_SquidStat

solution may be helpful to novice programmer like me.
Thank you.

@SGaist, could You provide an example please - fixed mylibrary.pro? Thanks!

I opened the project in Visual Studio.
Now I have my files in the "Distribution Files".

I think I should be able to access it with the QStandardPaths class.
If I'm right I do not know which variable corresponds to that folder