C++线程传参数

struct TThreadParam
{
    LPVOID pThis;
    int visionIndex;
};

class CMilTestDlg : public CDialog
{
// Construction
public:
    CMilTestDlg(CWnd* pParent = NULL);    // standard constructor
    TThreadParam threadParma[MaxVisionNum];
    static UINT VisionThread(LPVOID param);
}

void CMilTestDlg::Start()
{
    for (int i=;i<MaxVisionNum;i++)
    {
        threadParma[i].pThis = this;
        threadParma[i].visionIndex = i;
        AfxBeginThread(VisionThread,&(threadParma[i]));
    }
}

UINT CMilTestDlg::VisionThread(LPVOID param)
{
    TThreadParam  * pParam = (TThreadParam *)param;
    CMilTestDlg * pDlg = (CMilTestDlg *)(pParam->pThis);
    int visionIndex = pParam->visionIndex;
    pDlg->VisionProcess(visionIndex);
    return ;
}