Creating pthread in qt creator

pirpi

Hi all,
I am a newbie, I just want to send some messages from pthreads thread function to qt GUI. I am creating thread like this
pthread_create(&thread_read, NULL,&read_data,NULL);.
But I am getting following error
" read_data is not declared in this scope".
I have added
QMAKE_CXXFLAGS+= -std=gnu++0x -pthread -lpthread
LIBS += -L/usr/include -pthread

in .pro file in the project. Could anybody help me with this?

Thanks
pirpi

SGaist

Hi and welcome to devnet,

Where is read_data located ?

Also, since you are using Qt, why not take advantage of QThread which is cross-plaform ?

pirpi

No, already I have done a program using posix thread. I just want to send some message from posix threads to qt gui. For that purpose I just want to use posix thread.

read_data is located in main.cpp. I am defining read_data like this

void *read_data()
{
cout<<"Hello"<<endl;
}

SGaist

And where do you create the pthread ?

pirpi

I have created pthread in main(). I am creating like this
pthread_create(&thread_read, NULL,&read_data,NULL); and I am defining read_data in the same main.cpp like this void * read_data().
Could you please help me with this.

Thanks
pirpi

SGaist

Can you show your complete code ?