windows 如何将 INT64 写入 CString
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How to write INT64 to CString
提问by sxingfeng
I am coding in c++ windows.
我在 c++ windows 中编码。
INT64 dirID = -1;
CString querySQLStr = _T("");
querySQLStr.Format(L"select * from ImageInfo where FolderPath=%64d;", dirID);
querySQLStr always like this:
select * from ImageInfo where FolderPath= 1214;
is it right to use %64d？ Many Thanks
使用 %64d 合适吗？ 非常感谢
回答by ryan_s
I don't have a windows machine handy to test this on, but I think CString should accept this:
我没有方便的 Windows 机器来测试这个，但我认为 CString 应该接受这个：
querySQLStr.Format("%I64d", dirID);
It's probably worth noting that this is windows specific, but since you're using CString I guess that's okay.
可能值得注意的是，这是特定于 Windows 的，但由于您使用的是 CString，我想这没问题。
回答by mazen
i think you need to try this:
我认为你需要试试这个：
__int64 val;
......
ParamVal.Format( _T("%d{I64}"), val);
回答by BlueMax
%lldand %I64dboth work equally as well.
%lld和%I64d也同样有效。
strCode.Format(_T("Code = %lld, Result = %I64d \n"),lCode,lResult);
