创建进程时遇到的错误~

Question

一个基于对话框的MFC程序，已经在对话框类里声明了
DWORD WINAPI ThreadProcEvent(LPVOID pParam);
在cpp里的创建语句如下：
[code]
hThreadEvent = CreateThread(NULL,
                                0,
                (LPTHREAD_START_ROUTINE)ThreadProcEvent,
                    &dwParam,
                    0,
                        &dwThreadID);
[/code]结果报错：error C2440: 'type cast' : cannot convert from '' to 'unsigned long (__stdcall *)(void *)'
已经包含了process.h。

Answer 1

UNIT ThreadProcEvent(LPVOID pParam); 
这样呢

Answer 2

线程函数声明不对，返回值类型为UINT

Answer 3

[code]
DWORD CCommApiDlg::ThreadProcEvent(LPVOID pParam)
{
  DWORD dwEvtMask,dwRes;
  Eol.hEvent = CreateEvent(NULL,TRUE,FALSE,NULL);
  while(fEventRun)
  {
    WaitCommEvent(hCom,&dwEvtMask,&Eol);
dwRes = WaitForSingleObject(Eol.hEvent,100);
    switch(dwRes)
{
case WAIT_OBJECT_0:
switch(dwEvtMask)
{
case EV_RXCHAR:
if(!fStopMsg)
{
  fStopMsg = true;
  ::PostMessage(hWnd, WM_MYMSG, 0, (LPARAM)EV_RXCHAR);
}
break;
case EV_TXEMPTY:
AfxMessageBox("发送缓冲区为空");
break;
}
break;
}
  }
  return true;
}
[/code]

Answer 4

[code]
DWORD CCommApiDlg::ThreadProcEvent(LPVOID pParam)
{
  DWORD dwEvtMask,dwRes;
  Eol.hEvent = CreateEvent(NULL,TRUE,FALSE,NULL);
  while(fEventRun)
  {
    WaitCommEvent(hCom,&dwEvtMask,&Eol);
dwRes = WaitForSingleObject(Eol.hEvent,100);
    switch(dwRes)
{
case WAIT_OBJECT_0:
switch(dwEvtMask)
{
case EV_RXCHAR:
if(!fStopMsg)
{
  fStopMsg = true;
  ::PostMessage(hWnd, WM_MYMSG, 0, (LPARAM)EV_RXCHAR);
}
break;
case EV_TXEMPTY:
AfxMessageBox("发送缓冲区为空");
break;
}
break;
}
  }
  return true;
}
[/code]

Answer 5

已经在对话框类里声明了 
DWORD WINAPI ThreadProcEvent(LPVOID pParam); 
=============================
线程函数只能是全局的或是静态成员函数，另外返回值确实是UINT

Answer 6

刚才不知怎么代码没贴出来，没法编辑，就此再开一楼：DWORD CCommApiDlg::ThreadProcEvent(LPVOID pParam)
{
  DWORD dwEvtMask,dwRes;
  Eol.hEvent = CreateEvent(NULL,TRUE,FALSE,NULL);
  while(fEventRun)
  {
    WaitCommEvent(hCom,&dwEvtMask,&Eol);
dwRes = WaitForSingleObject(Eol.hEvent,100);
    switch(dwRes)
{
case WAIT_OBJECT_0:
switch(dwEvtMask)
{
case EV_RXCHAR:
if(!fStopMsg)
{
  fStopMsg = true;
  ::PostMessage(hWnd, WM_MYMSG, 0, (LPARAM)EV_RXCHAR);
}
break;
case EV_TXEMPTY:
AfxMessageBox("发送缓冲区为空");
break;
}
break;
}
  }
  return true;
}

Answer 7

搞定了，我把函数的声明放在对话框类里去了，现在放在cpp文件的最上面就好了，果然是相当的全局~
感谢哦~~

Answer 8

函数什么申明要是 static DWORD ThreadProEvent(...)