一个用PostThreadMessage线程通信例子

#include <stdio.h>#include <windows.h>#include <iostream.h>#include <process.h>#define UM_MSG1 WM_USER+1#define UM_MSG2 WM_USER+2DWORD WINAPI Thread1(LPVOID para){DWORD dwThreadId = *(DWORD *)para;DWORD i=0;TCHAR *p;char strTmp[100];while(TRUE){Sleep(1700);p=new TCHAR[10];sprintf(strTmp,"Hello %d %x",i++,p);PostThreadMessage(dwThreadId,UM_MSG1,(WPARAM)strTmp,(LPARAM)p);//delete []p;}return 0;}DWORD WINAPI Thread2(LPVOID para){char strTmp[100];DWORD dwThreadId = *(DWORD *)para;DWORD i=0;TCHAR *p;while(TRUE){Sleep(3000);p=new TCHAR[10];sprintf(strTmp,"World %d %x",i++,p);PostThreadMessage(dwThreadId,UM_MSG2,(WPARAM)strTmp,(LPARAM)p);//delete []p;}return 0;}int main(){DWORD dwValue =GetCurrentThreadId();cout<<"GetCurrentThreadId "<<dwValue<<endl;;HANDLE hThread1 = CreateThread(NULL,0,&Thread1,&dwValue,0,NULL);HANDLE hThread2 = CreateThread(NULL,0,&Thread2,&dwValue,0,NULL);CloseHandle(hThread1);CloseHandle(hThread2);MSG msg;while(GetMessage(&msg,NULL,0,0)){switch(msg.message){case UM_MSG1:case UM_MSG2:printf("msg:0x%x /t%x /t%s0/n",msg.message,msg.lParam,msg.wParam);//注释掉这句你就会看到堆内存地址变化delete [](TCHAR *)msg.lParam; break;default:printf("Unknown msg:0x%x/n",msg.message);break;}Sleep(1);}return 0;}