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Re: stolen uint's

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From:
Trey Harris
Date:
January 30, 2020 00:01
Subject:
Re: stolen uint's
Message ID:
CALKJ+EsKp4h7-Hwbj4AuqChLJOam4HRJdJVsLiVpa3XW522wng@mail.gmail.com
On Wed, Jan 29, 2020 at 18:39 ToddAndMargo via perl6-users <
perl6-users@perl.org> wrote:

> On 2020-01-29 15:32, ToddAndMargo via perl6-users wrote:
> > `DWORD cbData`
>
> cbData is a 32 bit unsigned integer.  It follows
> all the rules for unsigned integers.  You do not
> terminate it.  WinAPI knows it is 32 bits long.
>
> lpData (Long Pointer Data) is where you put the
> 0x0000 at the end, if you are using it as a string.
> lpData is an array of bytes of your chosen length.
>

 You keep telling me about fields I’m not asking about.

Let me quote you to you, from
<https://www.nntp.perl.org/group/perl.perl6.users/2020/01/msg8019.html>:

> This all came up when I tried to match
>
>        RegSetValueExW(
>            _In_ HKEY hKey,
>            _In_opt_ LPCWSTR lpValueName,
>            _Reserved_ DWORD Reserved,
>            _In_ DWORD dwType,
>            _In_reads_bytes_opt_(cbData) CONST BYTE * lpData,
>            _In_ DWORD cbData
>
> where CbData can either be a UTF little endian C string,
> terminated by a nul or a four byte little endian
> unsigned integer (no two's complement allowed) depending
> on the value of lpValueName (REG_SZ, REG_DWORD, etc.)

I would like to know about “where CbData can either be a UTF little endian
C string, terminated by a nul or a four byte little endian unsigned integer
(no two's complement allowed) depending on the value of lpValueName
(REG_SZ, REG_DWORD, etc.)”. That is what I and others find so bizarre. That
doesn’t seem to need reference to anything except cbData and lpValueName.

I’m just curious about this thing that can (again, quoting you) be “EITHER”
a UTF string ”OR a four byte little endian unsigned integer (no two’s
complement allowed)”. Tell me about that please. Just that.

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