_VARIANT_T 到　CSTRING 转换

来源：互联网发布：java字符串反转api 编辑：程序博客网时间：2024/06/06 06:38

数据类型转换函数

CString CZjyDlg::VariantToString(VARIANT var)

{

CString strValue;

_variant_t var_t;

_bstr_t bstr_t;

time_t cur_time;

CTime time_value;

COleCurrency var_currency;

switch(var.vt)

{

case VT_EMPTY:

case VT_NULL:strValue=_T("");break;

case VT_UI1:strValue.Format("%d",var.bVal);break;

case VT_I2:strValue.Format("%d",var.iVal);break;

case VT_I4:strValue.Format("%d",var.lVal);break;

case VT_R4:strValue.Format("%f",var.fltVal);break;

case VT_R8:strValue.Format("%f",var.dblVal);break;

case VT_CY:

var_currency=var;

strValue=var_currency.Format(0);break;

case VT_BSTR:

var_t =var;

bstr_t=var_t;

strValue.Format("%s",(const char *)bstr_t);break;

case VT_DATE:

cur_time=var.date;

time_value=cur_time;

strValue.Format("%A,%B,%d,%Y");break;

case VT_BOOL:strValue.Format("%d",var.boolVal);break;

default:strValue=_T("");break;

}

return strValue;

}

http://www.cppblog.com/ivenher/articles/2289.html