Hi, create a simple application that takes input thru EditLine and show it thru MessageBox. It work fine under debug version, But show following message "the Procedure entry point _Z5qFreePv could not be located in the link libarary qtCore4.dll".

I have copyed following dll to release folder :
  1. QtGui4.dll
  2. libgcc_s_dw2-1.dll
  3. QtCore4.dll
  4. mingwm10.dll


What went wrong ?