COleVariant var;
var = m_pSet->GetFieldValue(i);
switch (var.vt) {
case VT_BSTR:
str = (LPCSTR) var.bstrVal; // narrow characters in DAO
break;
case VT_I2:
str.Format("%d", (int) var.iVal);
break;
case VT_I4:
str.Format("%d", var.lVal);
break;
case VT_R4:
str.Format("%10.2f", (double) var.fltVal);
break;
case VT_R8:
str.Format("%10.2f", var.dblVal);
break;
case VT_CY:
str = COleCurrency(var).Format();
break;
case VT_DATE:
str = COleDateTime(var).Format();
break;
case VT_BOOL:
str = (var.boolVal == 0) ? "FALSE" : "TRUE";
break;
case VT_NULL:
str = "----";
break;
default:
str.Format("Unk type %d\n", var.vt);
}
var = m_pSet->GetFieldValue(i);
switch (var.vt) {
case VT_BSTR:
str = (LPCSTR) var.bstrVal; // narrow characters in DAO
break;
case VT_I2:
str.Format("%d", (int) var.iVal);
break;
case VT_I4:
str.Format("%d", var.lVal);
break;
case VT_R4:
str.Format("%10.2f", (double) var.fltVal);
break;
case VT_R8:
str.Format("%10.2f", var.dblVal);
break;
case VT_CY:
str = COleCurrency(var).Format();
break;
case VT_DATE:
str = COleDateTime(var).Format();
break;
case VT_BOOL:
str = (var.boolVal == 0) ? "FALSE" : "TRUE";
break;
case VT_NULL:
str = "----";
break;
default:
str.Format("Unk type %d\n", var.vt);
}
我也想有个简便点的方法
VC封装的也太少了吧!!简直要把我吓跑
VC封装得也太少了吧
switch (var.vt){ //var为取得的COleVariant 值,也就是数据库中的值
case ...
str ...
}
case VT_NULL:
case VT_EMPTY:
string.Empty();break;
case VT_BSTR:
string=(LPCTSTR)variant.pbstrVal;break;
default:
variant.ChangeType(VT_BSTR);
string=V_BSTR(&variant);break;
}