如何连接两个unicode字符串 [英] How to concatenate two unicode strings

问题描述

您好我已经使用了以下代码：

Hi I've used the following code for this :

DbgPrint("\n File name volume is %wZ",&dosName);
    str.MaximumLength = (USHORT)dosName.Length;
    //status = RtlAppendUnicodeStringToString(&teststr, &Data->Iopb->TargetFileObject->FileName);
    status = RtlUnicodeStringToAnsiString(&str, &dosName, TRUE);
    DbgPrint("\n status is :  %s",status);
    DbgPrint("\n New  Data %Z", str);

    DbgPrint("\n Data %wZ", &Data->Iopb->TargetFileObject->FileName);

但是这个根本不工作且状态显示为null DebugView中的值



请建议我一些替代方案

but this one is not working at all and status is showing null value in DebugView

please suggest me some alternatives

推荐答案

<$ c $返回的状态值c> RtlUnicodeStringToAnsiString 不是字符串而是数值：请参阅 https：// msdn.microsoft.com/en-gb/library/cc704588.aspx [ ^ ]。

The status value returned by RtlUnicodeStringToAnsiString is not a string but a numeric value: see https://msdn.microsoft.com/en-gb/library/cc704588.aspx[^].

NameLength = (USHORT)dosName.MaximumLength + Data->Iopb->TargetFileObject->FileName.MaximumLength + 2;
    NameBuffer = ExAllocatePoolWithTag(PagedPool,NameLength,NC_MAPPING_TAG);
    NameString.Length = 0;
    NameString.MaximumLength = NameLength;
    NameString.Buffer = NameBuffer;
    RtlCopyUnicodeString(&NameString, &dosName);
    RtlAppendUnicodeStringToString(&NameString, &Data->Iopb->TargetFileObject->FileName);

这里我们需要为字符串分配池。但小心池分配可能导致BSOD。

Here we need to allocate pool for string. But Be careful pool allocation may lead to BSOD.

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