4   系统实现

4.1 登录模块

新建立一个类CUser继承于Cdialog，设计窗体如下,两个Edit控件,分别与类的变量m_username, m_password相关联,在用户点击确认后,触发OnOK函数,代码如下:

UpdateData();

CString strpassword;

int count = 0;

if(m_username == "")

{

    AfxMessageBox("用户名不允许为空");

}

else

{

    CADORecordset* pRs = new CADORecordset(((CRepairServiceApp*)AfxGetApp())->g_pDb);

    CString sqlcommand="select pass_word from repairuser where user_name ='";

    sqlcommand += m_username;

    sqlcommand += "'";

    if(pRs->Open((LPCTSTR)sqlcommand))

    {

        while(!pRs->IsEof())

        {