I create a MFC (exe) in VC++ 6 with
name ThreadExample. In CThreadExampleDlg,
I have two function below :

DWORD WINAPI CThreadExampleDlg::ThreadFunc( LPVOID lpParam )
{

MessageBox("Thread created.", MB_OK );

return 0;
}

void CThreadExampleDlg::RunEx()
{
DWORD dwThreadId, dwThrdParam = 1;
HANDLE hThread;

hThread = CreateThread(
NULL, // no security attributes
0, // use default stack size
ThreadFunc, // thread function
&dwThrdParam, // argument to thread function
0, // use default creation flags
&dwThreadId); // returns the thread identifier

// Check the return value for success.

if (hThread == NULL)
MessageBox( "CreateThread failed." );

CloseHandle( hThread );
}

It generate an error below :
Cannot convert parameter 3 from 'unsigned long (void *)' to 'unsigned long (__stdcall *)(void *)'. None of functions with this name in scope match the target.

I had use some way consist cast type ThreadFunc to
LPTHREAD_START_ROUTINE) ThreadFunc but it continue generate error.

How can I fix this problem ?

Well you need to leave the cast to (LPTHREAD_START_ROUTINE). But it's giving this error because the thread routine is a member of a class. Try making it a function that is not part of any class.

Mik

Thank for your advise, Mik.

But I want to build my application on Dialog base, so it must be derived from CDialog.

Can you tell me another way to create thread as a part of class ?

beginthread is another way of creating thread.. try using that..
but i think even if u use threadfunc as separate function.. it will solve the purpose

One must use static member functions in the class and pass "this" pointer. you can call the function as C++ callback only if the function is static member.

see Q102352 in msdn.