CreateThread建立一個簡單的多線程

#include<windows.h>

#include<iostream.h>

DWORD WINAPI ThreadFunc(LPVOID param) //線程有個參數的，要加上

{

  MessageBox(NULL,"this is a test","Test",MB_OK);

  return 0;

}

int main()

{

  HANDLE hThread=NULL;

  DWORD ThreadNum=0;

  hThread=CreateThread(NULL,NULL,(LPTHREAD_START_ROUTINE)ThreadFunc,0,NULL,&ThreadNum);  //ThreadFunc前加個強行轉換不會錯

  WaitForSingleObject(hThread, INFINITE); //這句不加上有可能線程還沒起來就結束了

  return 0; 

}

建立一個Win32 Console Application，工程名為CreateMythread

添加一個CPP檔案，代碼如下

#include <iostream>      

#include <windows.h>      

using namespace std;      

DWORD WINAPI ThreadProc(LPVOID pParam);      

UINT PrintHello(LPVOID lpParam);      

HANDLE g_Mutex;  //互斥量      

int main(int argc,char* argv[])      

{      

//建立互斥量      

g_Mutex=CreateMutex(NULL,false,"CreateMythread");      

DWORD ThreadID;      

char* cParam="Hello World!";      

int iParam=2010;      

//建立第一個線程ThreadProc      

CreateThread(NULL,0,ThreadProc,      

cParam,0,&ThreadID);      

//建立第二個線程PrintHello      

//若不是規範格式則必須用LPTHREAD_START_ROUTINE轉換      

CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)PrintHello,      

&iParam,0,&ThreadID);      

Sleep(100);      

CloseHandle(g_Mutex);      

//system("pause");      

return 0;      

}      

DWORD WINAPI ThreadProc(LPVOID pParam)      

{      

//等待被喚醒      

WaitForSingleObject(g_Mutex,INFINITE);      

cout <<"CreateThread:ThreadProc ";      

cout <<(char*)pParam <<endl;      

//Sleep(0);      

//将互斥量設定為有信号,此時第一個等待的線程被喚醒，并将該互斥量置為無信号狀态      

ReleaseMutex(g_Mutex);      

return 0;      

}      

UINT PrintHello(LPVOID lpParam)      

{      

WaitForSingleObject(g_Mutex,INFINITE);      

cout <<"CreateThread:PrintHello ";      

cout <<*((int*)lpParam) <<endl;      

//Sleep(0);      

ReleaseMutex(g_Mutex);      

return 0;      

}