来段测试代码。

 
// postthreadDlg.cpp : implementation file
//

#include "stdafx.h"
#include
#include
#include
#include "postthread.h"
#include "postthreadDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

#define MY_MSG WM_USER + 100

const int MAX_INFO_SIZE = 20;

HANDLE hStartEvent; // thread start event

// thread function

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
CAboutDlg();

// Dialog Data
//{{AFX_DATA(CAboutDlg)
enum { IDD = IDD_ABOUTBOX };
//}}AFX_DATA

// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CAboutDlg)
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
//}}AFX_VIRTUAL

// Implementation
protected:
//{{AFX_MSG(CAboutDlg)
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
//{{AFX_DATA_INIT(CAboutDlg)
//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CAboutDlg)
//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
//{{AFX_MSG_MAP(CAboutDlg)
// No message handlers
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CPostthreadDlg dialog

CPostthreadDlg::CPostthreadDlg(CWnd* pParent /*=NULL*/)
: CDialog(CPostthreadDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CPostthreadDlg)
// NOTE: the ClassWizard will add member initialization here
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CPostthreadDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CPostthreadDlg)
// NOTE: the ClassWizard will add DDX and DDV calls here
//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CPostthreadDlg, CDialog)
//{{AFX_MSG_MAP(CPostthreadDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
ON_WM_TIMER()
ON_MESSAGE(WM_USER + 0x88, OnMyMsg)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
//ON_MESSAGE(WM_USER + 0x88, OnMyMsg)
/////////////////////////////////////////////////////////////////////////////
// CPostthreadDlg message handlers

unsigned CPostthreadDlg::fun(void *param)
{
HWND hWnd = (HWND)param;
MSG msg;
PeekMessage(&msg, NULL, WM_USER, WM_USER, PM_NOREMOVE);

if(!SetEvent(hStartEvent)) //set thread start event
{
AfxMessageBox("set start event failed,errno:%d\n");
return 1;
}

while(true)
{
if(GetMessage(&msg,0,0,0)) //get msg from message queue
{
switch(msg.message)
{
case MY_MSG:
// char * pInfo = (char *)msg.wParam;
// ::MessageBox(0,"recv",NULL, MB_OK);
::PostMessage(hWnd, WM_USER + 0x88, 0, 0);
// delete[] pInfo;
break;
}
}
}
return 0;
}



BOOL CPostthreadDlg::OnInitDialog()
{
CDialog::OnInitDialog();
// IDM_ABOUTBOX must be in the system command range.
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
ASSERT(IDM_ABOUTBOX < 0xF000);

CMenu* pSysMenu = GetSystemMenu(FALSE);
if (pSysMenu != NULL)
{
CString strAboutMenu;
strAboutMenu.LoadString(IDS_ABOUTBOX);
if (!strAboutMenu.IsEmpty())
{
pSysMenu->AppendMenu(MF_SEPARATOR);
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
}
}

// Set the icon for this dialog. The framework does this automatically
// when the application's main window is not a dialog
SetIcon(m_hIcon, TRUE); // Set big icon
SetIcon(m_hIcon, FALSE); // Set small icon

// TODO: Add extra initialization here

hStartEvent = ::CreateEvent(0,FALSE,FALSE,0); //create thread start event
if(hStartEvent == 0)
{
AfxMessageBox("create start event failed,errno:%d\n");
return FALSE;
}

//start thread
hThread = (HANDLE)_beginthreadex( NULL, 0, fun, GetSafeHwnd(), 0, &nThreadID );
if(hThread == 0)
{
AfxMessageBox("start thread failed,errno:%d\n");
CloseHandle(hStartEvent);
return FALSE;
}

//wait thread start event to avoid PostThreadMessage return errno:1444
::WaitForSingleObject(hStartEvent,INFINITE);
CloseHandle(hStartEvent);


SetTimer(33, 3000, NULL);
return TRUE; // return TRUE unless you set the focus to a control
}

void CPostthreadDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
if ((nID & 0xFFF0) == IDM_ABOUTBOX)
{
CAboutDlg dlgAbout;
dlgAbout.DoModal();
}
else
{
CDialog::OnSysCommand(nID, lParam);
}
}

// If you add a minimize button to your dialog, you will need the code below
// to draw the icon. For MFC applications using the document/view model,
// this is automatically done for you by the framework.

void CPostthreadDlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // device context for painting

SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

// Center icon in client rectangle
int cxIcon = GetSystemMetrics(SM_CXICON);
int cyIcon = GetSystemMetrics(SM_CYICON);
CRect rect;
GetClientRect(&rect);
int x = (rect.Width() - cxIcon + 1) / 2;
int y = (rect.Height() - cyIcon + 1) / 2;

// Draw the icon
dc.DrawIcon(x, y, m_hIcon);
}
else
{
CDialog::OnPaint();
}
}

// The system calls this to obtain the cursor to display while the user drags
// the minimized window.
HCURSOR CPostthreadDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}

void CPostthreadDlg::OnButton1()
{
// TODO: Add your control notification handler code here

/* int count = 0;
while(true)
{
char* pInfo = new char[MAX_INFO_SIZE]; //create dynamic msg
sprintf(pInfo,"msg_%d",++count);*/
if(!PostThreadMessage(nThreadID,MY_MSG,(WPARAM)0,0))//post thread msg
{
AfxMessageBox("post message failed,errno:%d\n");
// delete[] pInfo;
}
// ::Sleep(1000);
/* }

CloseHandle(hThread);*/
}


void CPostthreadDlg::OnMyMsg(WPARAM wParam, LPARAM lParam)
{
AfxMessageBox("ttt");
}

void CPostthreadDlg::OnTimer(UINT nIDEvent)
{
// TODO: Add your message handler code here and/or call default
if (nIDEvent == 33)
{
if(!PostThreadMessage(nThreadID,MY_MSG,(WPARAM)0,0))//post thread msg
{
AfxMessageBox("post message failed,errno:%d\n");
// delete[] pInfo;
}
}
CDialog::OnTimer(nIDEvent);
}