小驱动程序Mainl

主线程会自动附着（attaches）DLL,因为程序和这个DLL链接在一起，当程序开始执行，另一个线程被产生，调用DLL中的TheFunction()，然后程序结束。

/*Driver to load the simple DLL,

create a thread,call a function in the DLL,and exit.*/

#define WIN32_LEAN_AND_MEAN

#include<stdio.h>

#include<stdlib.h>

#include<Windows.h>

_declspec(dllimport) BOOL TheFunction();

DWORD WINAPI ThreadFunc(LPVOID);

VOID main(VOID)

{

HANDLE hThrd;

DWORD dwThreadId;

hThrd = CreateThread(NULL, 0, ThreadFunc, NULL, 0, &dwThreadId);

if (hThrd)

printf("\t Thread launched\n");

WaitForSingleObject(hThrd, INFINITE);

CloseHandle(hThrd);

}

/*Just call a function in the DLL and exit*/

DWORD WINAPI ThreadFunc(LPVOID n)

{

printf("\t Thread running");

TheFunction();

return 0;

}





第二个重点是，DllMain()系在新线程的context中被调用。