我试图将来自CComboBox
的CString变量转换为std::string
或sql::SQLString
一个用于在SQL查询(使用Mysql连接器C++)中设置它。所以,在这里我的代码:CString到STD ::字符串或SQL :: SQLString转换 - C++
CComboBox *pComboRule = (CComboBox*)GetDlgItem(ID_EDIT_RULE);
CComboBox *pComboAg1 = (CComboBox*)GetDlgItem(ID_EDIT_AG1);
CComboBox *pComboAg2 = (CComboBox*)GetDlgItem(ID_EDIT_AG2);
CComboBox *pComboAg3 = (CComboBox*)GetDlgItem(ID_EDIT_AG3);
CString &AG1 = CString(_T("A string"));
CString &AG2 = CString(_T("A string"));
CString &AG3 = CString(_T("A string"));
CString str;
pComboAg1->GetLBText(pComboAg1->GetCurSel(), AG1);
pComboAg2->GetLBText(pComboAg2->GetCurSel(), AG2);
pComboAg3->GetLBText(pComboAg3->GetCurSel(), AG3);
try {
std::string s = CStringA(AG1);
sql::PreparedStatement *pstmt = con->prepareStatement("SELECT `nAccessIdn` FROM `base`.`tb_table` WHERE `field` IN (?, ?, ?) LIMIT 3");
pstmt->setString(1, s);
pstmt->setString(2, s);
pstmt->setString(3, s);
sql::ResultSet *res = pstmt->executeQuery();
if (res->rowsCount() != 0) {
while (res->next())
{
str.Format(_T("AG : %s\r\n"), res->getString(1));
OutputDebugString(str);
}
}
}
catch (const std::bad_alloc& e) {
CString itemString;
itemString.Format(_T("SQLException %s"), CString(e.what()));
MessageBox(itemString, _T("Failed Logon Attempt"), MB_OK | MB_ICONERROR);
}
我已经尝试了很多的东西一样
std::string s((LPCTSTR)AG1);
OR
std::basic_string<TCHAR>
OR
std::string std(somStr, someStr.GetLength());
OR
CT2A(cst.GetString());
OR
char* myStr = "This is a C string!";
std::string myCppString = myStr;
等等
有谁知道一种成功吗?
详情:
的Visual Studio 2017年社区版 - Unicode的项目 - 运行时库:/ MDD
非常感谢您的帮助:)
编辑:新手在C++代码更新。
您试过 - 有什么问题? – 2017-10-09 13:38:33
没有解决方案... –
那意味着什么? – 2017-10-09 13:41:59