对话框数据交换

//{{Jiangsheng的垃圾代码(对话框数据交换)
class CDataTypeFieldExChange;
//CTextFieldEdit是一个派生于CEdit，绑定到记录集字段的编辑框
//lpszFieldName是绑定的字段的名称
//vt是绑定的字段的类型
void DDX_TextField(CDataTypeFieldExChange* pDX, int nIDC, CTextFieldEdit& rControl,
    LPCTSTR lpszFieldName,VARTYPE vt=VT_BSTR);
//DDX_TextField的封装；自动从数据类型获取字段名称：描述/别名/标识字段；并且有简单的验证
void DDX_InfoField(CDataTypeFieldExChange* pDX, int nIDC, CTextFieldEdit& rControl);
void DDX_AliasField(CDataTypeFieldExChange* pDX, int nIDC, CTextFieldEdit& rControl);
void DDX_IDField(CDataTypeFieldExChange* pDX, int nIDC, CTextFieldEdit& rControl);
void DDX_AliasField(CDataTypeFieldExChange* pDX, int nIDC, CTextFieldEdit& rControl)
{
    DDX_TextField(pDX,nIDC,rControl,pDX->m_pDTC->m_pDataType->m_strAliasField);
    switch(pDX->m_pDTC->m_adReason)
    {
        case adRsnAddNew:
        case adRsnUpdate:
        case adRsnDelete:

        if(pDX->m_pDX->m_bSaveAndValidate)
        {
            CString strText;
            rControl.GetWindowText(strText);
            if(strText.FindOneOf(T("/\\*?[]\"<>失望的脸"))!=-1){
            CString strTemp;
            strTemp.Format(_T("%s不能包含以下字符: / \\ * ? [ ] \" < > : |")
                ,pDX->m_pDTC->m_pDataType->m_strAliasField);
            ::AfxMessageBox(strTemp);
            pDX->m_pDX->Fail();
        }
    }
}

void DDX_IDField(CDataTypeFieldExChange* pDX, int nIDC, CTextFieldEdit&? rControl)
{
    if(pDX->m_pDX->m_bSaveAndValidate)
    {
        TRACE_LINE(_T("Ignore DDX for %s/%s")
        ,pDX->m_pDTC->m_pDataType->m_strDataType
        ,pDX->m_pDTC->m_pDataType->m_strIDField
        眨眼笑脸;
    }
    else
    {
        DDX_TextField(pDX,nIDC,rControl,pDX->m_pDTC->m_pDataType->m_strIDField);
    }
}

void DDX_InfoField(CDataTypeFieldExChange* pDX, int nIDC, CTextFieldEdit& rControl)
{
    DDX_TextField(pDX,nIDC,rControl,pDX->m_pDTC->m_pDataType->m_strInfoField);
    switch(pDX->m_pDTC->m_adReason)
    {
        case adRsnAddNew:
        case adRsnUpdate:
        case adRsnDelete:
            if(pDX->m_pDX->m_bSaveAndValidate)
            {
                CString strText;
                rControl.GetWindowText(strText);
                if(strText.IsEmpty())
                {
                    CString strTemp;
                    strTemp.Format(_T("%s不能为空！"),pDX->m_pDTC->m_pDataType->m_strInfoField);
                    ::AfxMessageBox(strTemp);
                    pDX->m_pDX->Fail();
                }
                if(strText.FindOneOf(T("/\\*?[]\"<>失望的脸"))!=-1)
                {
                    CString strTemp;
                    strTemp.Format(_T("%s不能包含以下字符: / \\ * ? [ ] \" < > : |",pDX->m_pDTC->m_pDataType->m_strInfoField));
                    ::AfxMessageBox(strTemp);
                    pDX->m_pDX->Fail();
                }

            }
            else{
                if(!pDX->m_pDTC->m_strAddNew.IsEmpty())
                {
                    rControl.SetWindowText(pDX->m_pDTC->m_strAddNew);
                }
            }
    }
}

void DDX_TextField(CDataTypeFieldExChange* pDX
     , int nIDC
     , CTextFieldEdit& rControl
     ,LPCTSTR lpszFieldName
     ,VARTYPE vt//=VT_BSTR
)
{
    FieldsPtr?pFields=pDX->m_pRecordset->Fields;
    CString strFieldName(lpszFieldName);
    CDataType* pDT=pDX->m_pDTC->m_pDataType;

    CString strVal;
    if (!pDX->m_pDX->m_bSaveAndValidate)
    {
        switch(pDX->m_pDTC->m_adReason)
        {
            case adRsnAddNew:
            case adRsnUpdate:
            case adRsnDelete:
            if(!strFieldName.IsEmpty()){
                strVal=g_GetValueString(pFields->Item[lpszFieldName]->Value);
            }
            else{
                ASSERT(FALSE);
            }
        }
    }
    DDX_Control(pDX->m_pDX,nIDC,rControl);
    DDX_Text(pDX->m_pDX,nIDC,strVal);

    if(pDX->m_pDX->m_bSaveAndValidate)
    {
        switch(pDX->m_pDTC->m_adReason)
        {
            case adRsnAddNew:
            case adRsnUpdate:
            case adRsnDelete:
            {
                _variant_t varVal;
                if(g_SetValueString(varVal,strVal,vt))
                {
                    TRACE_LINE(_T("Set Field %s to %s\n"),lpszFieldName,strVal);
                    if(!strFieldName.IsEmpty()){
                        pFields->Item[lpszFieldName]->Value=varVal;
                    }
                    else{
                        ASSERT(FALSE);
                    }
                }
            }
        }
    }
    else{
        //编辑框的前一个控件是其标题，其文字从数据库中的类型定义获得
        CWnd* pStatic=rControl.GetNextWindow(GW_HWNDPREV);
        CString strCaption=pDT->GetFieldProperty(lpszFieldName,_T("Caption"));
        if(pStatic&&!strCaption.IsEmpty())
        {
            pStatic->SetWindowText(strCaption);
        }
        rControl.SetClientTipText(pDT->GetFieldProperty(lpszFieldName,_T("Comments")));
    }
}
//}}End Jiangsheng的垃圾代码(对话框数据交换)

WinForm   对话框数据交换 (Update)