c++ - Qt executable error- dll library -

a qt application runs when executed qtcreator, doesn't wont run when try execute debug folder (without qtcreator). asked lots of .dll files , downloaded them 1 one,and added debug folder. got error:

the program can't start because libwinpthread-1.dll missing computer. try reinstalling program fix problem. 

i can't find libwinpthread-1.dll anywhere on internet. did wrong?

the path executable is:

c:\qt\tools\qtcreator\bin\build-simpletext1_3-desktop_qt_5_2_1_mingw_32bit\debug 

the project file:

#------------------------------------------------- # # project created qtcreator 2014-04-04t14:29:48 # #-------------------------------------------------  qt       += core gui  greaterthan(qt_major_version, 4): qt += widgets  target = simpletext1_3 template = app   sources += main.cpp\         mainwindow.cpp  headers  += mainwindow.h  forms    += mainwindow.ui config += console c++11 qmake_cxxflags += -std=c++11 

and main.cpp:

#include "mainwindow.h" #include <qapplication>  int main(int argc, char *argv[]) {     qapplication a(argc, argv);     mainwindow w;     w.show();      return a.exec(); } 

when run application in qt creator every thing when run .exe file fro debug folder dll missing error. it`s true! first set qt creator release mode. must copy these dll & folder release folder:

platforms --> folder icudt52.dll icuin52.dll icuuc52.dll msvcp110.dll msvcr110.dll qt5core.dll qt5gui.dll qt5widgets.dll 

above dll visual studio compiler & core & gui library.

good luck. ya ali.