Answer / nageswara rao.y

AfxBeginThread() ,
CreateThread()

Answer / bijender singh

MFC support two type of thread : Worker Thread & UI thread.
There is an overloaded function called AfxBeginThread()for
creating threads in MFC but at APT level you can't
differentaite.
At implementation level you can find the difference:-

For worker thread:
AfxBeginThread(); It takes 6 parameters, first param as
address of thread controlling function(must),2nd as
parameter passed to threadfn(must),3'rd thread priority
level(optional), 4'th as stack size(Optional),5'th as
create_flag(optional),6'th security class(optional)etc.

For UI(User Interface) thread:
Derive a class from CWinThread;
class CMyThread:public CWinThread
{
.....
.....
.....
}
Override the InitInstance() function in this class.

Then use the function
AfxBeginThread()and pass the parameter in RUNTIME_CLASS
macro in this func.
i.e. AfxBeginThread(RUNTIME_CLASS(CMyThread));
It takes 5 parameters ...rest of last four params are same
as worker thread which are optional.

So in this you can create the Worker and User Interface
threads.

Answer / jianhua wang

For worker thread:
AfxBeginThread();

for user interface thread:
Derive a class from CWinThread;
AfxBeginThread(); (Another version)
//if the thread is created in a suspended state, you must call
CWinThread::ResumeThread();

Hi All, I have created one MFC Dialog Based application.now if i am running the application its working fine,instead of closing he application i minimized the application,if i run the application again,i am getting the Dialog. I want to prevent the calling of application multiple times. please give me the code and let me know in which method i need to make changes. Praveer

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