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WTSSendMessageA handle?

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by: T - Sat, 19 Nov 2022 07:55 UTC

Hi All,

Windows 11-pro 22H2
https://learn.microsoft.com/en-us/windows/win32/api/wtsapi32/nf-wtsapi32-wtssendmessagea

WTSSendMessageA states:

[in] hServer

A handle to an RD Session Host server. Specify
a handle opened by the WTSOpenServer function,
or specify WTS_CURRENT_SERVER_HANDLE to indicate
the RD Session Host server on which your application
is running.

If I choose NOT to use "WTS_CURRENT_SERVER_HANDLE",
how to I get my "handle to an RD Session Host server"?

Many thanks,
-T

Re: WTSSendMessageA handle?

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From: T@invalid.invalid (T)
Newsgroups: comp.os.ms-windows.programmer.win32
Subject: Re: WTSSendMessageA handle?
Date: Sat, 19 Nov 2022 01:19:34 -0800
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by: T - Sat, 19 Nov 2022 09:19 UTC

On 11/18/22 23:55, T wrote:
> Hi All,
>
> Windows 11-pro 22H2
> https://learn.microsoft.com/en-us/windows/win32/api/wtsapi32/nf-wtsapi32-wtssendmessagea
>
> WTSSendMessageA states:
>
>    [in] hServer
>
>    A handle to an RD Session Host server. Specify
>    a handle opened by the WTSOpenServer function,
>    or specify WTS_CURRENT_SERVER_HANDLE to indicate
>    the RD Session Host server on which your application
>    is running.
>
>
> If I choose NOT to use "WTS_CURRENT_SERVER_HANDLE",
> how to I get my "handle to an RD Session Host server"?
>
> Many thanks,
> -T

It is a call to
C++
HANDLE WTSOpenServerA(
[in] LPSTR pServerName
);

But what is the call to get my local computer's
server's name?
I suppose I could always use:
set | grep -i kvm
COMPUTERNAME=KVM-W11
LOGONSERVER=\\KVM-W11
and try to figure out what the format is.
\\ or no \\ etc.
A system call would solve that

Re: WTSSendMessageA handle?

<124w5o84i1bk4$.6okzj059xuk9$.dlg@40tude.net>

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From: jj4public@outlook.com (JJ)
Newsgroups: comp.os.ms-windows.programmer.win32
Subject: Re: WTSSendMessageA handle?
Date: Sat, 19 Nov 2022 16:24:38 +0700
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X-Bitcoin: 1LcqwCQBQmhcWfWsVEAeyLchkAY8ZfuMnS

by: JJ - Sat, 19 Nov 2022 09:24 UTC

On Fri, 18 Nov 2022 23:55:40 -0800, T wrote:
> Hi All,
>
> Windows 11-pro 22H2
> https://learn.microsoft.com/en-us/windows/win32/api/wtsapi32/nf-wtsapi32-wtssendmessagea
>
> WTSSendMessageA states:
>
> [in] hServer
>
> A handle to an RD Session Host server. Specify
> a handle opened by the WTSOpenServer function,
> or specify WTS_CURRENT_SERVER_HANDLE to indicate
> the RD Session Host server on which your application
> is running.
>
> If I choose NOT to use "WTS_CURRENT_SERVER_HANDLE",
> how to I get my "handle to an RD Session Host server"?
>
> Many thanks,
> -T

It's there in the text you just posted.

Re: WTSSendMessageA handle?

<tla7ms$36mns$3@dont-email.me>

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From: T@invalid.invalid (T)
Newsgroups: comp.os.ms-windows.programmer.win32
Subject: Re: WTSSendMessageA handle?
Date: Sat, 19 Nov 2022 01:30:04 -0800
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by: T - Sat, 19 Nov 2022 09:30 UTC

On 11/19/22 01:24, JJ wrote:
> On Fri, 18 Nov 2022 23:55:40 -0800, T wrote:
>> Hi All,
>>
>> Windows 11-pro 22H2
>> https://learn.microsoft.com/en-us/windows/win32/api/wtsapi32/nf-wtsapi32-wtssendmessagea
>>
>> WTSSendMessageA states:
>>
>> [in] hServer
>>
>> A handle to an RD Session Host server. Specify
>> a handle opened by the WTSOpenServer function,
>> or specify WTS_CURRENT_SERVER_HANDLE to indicate
>> the RD Session Host server on which your application
>> is running.
>>
>> If I choose NOT to use "WTS_CURRENT_SERVER_HANDLE",
>> how to I get my "handle to an RD Session Host server"?
>>
>> Many thanks,
>> -T
>
> It's there in the text you just posted.

Hi JJ,

WTS_CURRENT_SERVER_HANDLE is a constant set to 0

I am after the actual handle as I am working in
an RDP environment. It is not zero.

You can get that handle with

C++

HANDLE WTSOpenServerA(
[in] LPSTR pServerName
);

Now all I am missing is the call to get my
local computer's server name (and its syntax)

-T

Re: WTSSendMessageA handle?

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Newsgroups: comp.os.ms-windows.programmer.win32
Subject: Re: WTSSendMessageA handle?
Date: Sat, 19 Nov 2022 18:41:27 +0700
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X-Bitcoin: 1LcqwCQBQmhcWfWsVEAeyLchkAY8ZfuMnS

by: JJ - Sat, 19 Nov 2022 11:41 UTC

On Sat, 19 Nov 2022 01:30:04 -0800, T wrote:
> On 11/19/22 01:24, JJ wrote:
>> On Fri, 18 Nov 2022 23:55:40 -0800, T wrote:
>>> Hi All,
>>>
>>> Windows 11-pro 22H2
>>> https://learn.microsoft.com/en-us/windows/win32/api/wtsapi32/nf-wtsapi32-wtssendmessagea
>>>
>>> WTSSendMessageA states:
>>>
>>> [in] hServer
>>>
>>> A handle to an RD Session Host server. Specify
>>> a handle opened by the WTSOpenServer function,
>>> or specify WTS_CURRENT_SERVER_HANDLE to indicate
>>> the RD Session Host server on which your application
>>> is running.
>>>
>>> If I choose NOT to use "WTS_CURRENT_SERVER_HANDLE",
>>> how to I get my "handle to an RD Session Host server"?
>>>
>>> Many thanks,
>>> -T
>>
>> It's there in the text you just posted.
>
> Hi JJ,
>
> WTS_CURRENT_SERVER_HANDLE is a constant set to 0
>
> I am after the actual handle as I am working in
> an RDP environment. It is not zero.
>
> You can get that handle with
>
> C++
>
> HANDLE WTSOpenServerA(
> [in] LPSTR pServerName
> );
>
> Now all I am missing is the call to get my
> local computer's server name (and its syntax)
>
> -T

`GetComputerName()` can be used to get the local computer name. But using
that name is same as using `WTS_CURRENT_SERVER_HANDLE`. The local computer
name will always resolve to `127.0.0.1` which is same as `localhost` when
looked up from local computer.

Re: WTSSendMessageA handle?

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From: T@invalid.invalid (T)
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Subject: Re: WTSSendMessageA handle?
Date: Sat, 19 Nov 2022 15:45:06 -0800
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by: T - Sat, 19 Nov 2022 23:45 UTC

On 11/19/22 03:41, JJ wrote:
> On Sat, 19 Nov 2022 01:30:04 -0800, T wrote:
>> On 11/19/22 01:24, JJ wrote:
>>> On Fri, 18 Nov 2022 23:55:40 -0800, T wrote:
>>>> Hi All,
>>>>
>>>> Windows 11-pro 22H2
>>>> https://learn.microsoft.com/en-us/windows/win32/api/wtsapi32/nf-wtsapi32-wtssendmessagea
>>>>
>>>> WTSSendMessageA states:
>>>>
>>>> [in] hServer
>>>>
>>>> A handle to an RD Session Host server. Specify
>>>> a handle opened by the WTSOpenServer function,
>>>> or specify WTS_CURRENT_SERVER_HANDLE to indicate
>>>> the RD Session Host server on which your application
>>>> is running.
>>>>
>>>> If I choose NOT to use "WTS_CURRENT_SERVER_HANDLE",
>>>> how to I get my "handle to an RD Session Host server"?
>>>>
>>>> Many thanks,
>>>> -T
>>>
>>> It's there in the text you just posted.
>>
>> Hi JJ,
>>
>> WTS_CURRENT_SERVER_HANDLE is a constant set to 0
>>
>> I am after the actual handle as I am working in
>> an RDP environment. It is not zero.
>>
>> You can get that handle with
>>
>> C++
>>
>> HANDLE WTSOpenServerA(
>> [in] LPSTR pServerName
>> );
>>
>> Now all I am missing is the call to get my
>> local computer's server name (and its syntax)
>>
>> -T
>
> `GetComputerName()` can be used to get the local computer name. But using
> that name is same as using `WTS_CURRENT_SERVER_HANDLE`. The local computer
> name will always resolve to `127.0.0.1` which is same as `localhost` when
> looked up from local computer.

What is the difference between GetComputerName and

C++

int gethostname(
[out] char *name,
[in] int namelen
);

Re: WTSSendMessageA handle?

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Subject: Re: WTSSendMessageA handle?
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by: T - Sun, 20 Nov 2022 05:35 UTC

On 11/19/22 15:45, T wrote:
> On 11/19/22 03:41, JJ wrote:
>> On Sat, 19 Nov 2022 01:30:04 -0800, T wrote:
>>> On 11/19/22 01:24, JJ wrote:
>>>> On Fri, 18 Nov 2022 23:55:40 -0800, T wrote:
>>>>> Hi All,
>>>>>
>>>>> Windows 11-pro 22H2
>>>>> https://learn.microsoft.com/en-us/windows/win32/api/wtsapi32/nf-wtsapi32-wtssendmessagea
>>>>>
>>>>> WTSSendMessageA states:
>>>>>
>>>>>       [in] hServer
>>>>>
>>>>>       A handle to an RD Session Host server. Specify
>>>>>       a handle opened by the WTSOpenServer function,
>>>>>       or specify WTS_CURRENT_SERVER_HANDLE to indicate
>>>>>       the RD Session Host server on which your application
>>>>>       is running.
>>>>>
>>>>> If I choose NOT to use "WTS_CURRENT_SERVER_HANDLE",
>>>>> how to I get my "handle to an RD Session Host server"?
>>>>>
>>>>> Many thanks,
>>>>> -T
>>>>
>>>> It's there in the text you just posted.
>>>
>>> Hi JJ,
>>>
>>> WTS_CURRENT_SERVER_HANDLE is a constant set to 0
>>>
>>> I am after the actual handle as I am working in
>>> an RDP environment. It is not zero.
>>>
>>> You can get that handle with
>>>
>>> C++
>>>
>>> HANDLE WTSOpenServerA(
>>>     [in] LPSTR pServerName
>>> );
>>>
>>> Now all I am missing is the call to get my
>>> local computer's server name (and its syntax)
>>>
>>> -T
>>
>> `GetComputerName()` can be used to get the local computer name. But using
>> that name is same as using `WTS_CURRENT_SERVER_HANDLE`. The local
>> computer
>> name will always resolve to `127.0.0.1` which is same as `localhost` when
>> looked up from local computer.
>
>
> What is the difference between GetComputerName and
>
> C++
>
> int gethostname(
> [out] char *name,
> [in] int namelen
> );
>
>
Trivia. I just noticed that "[out] char *name,"
is in UTF16 format.

Re: WTSSendMessageA handle?

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Subject: Re: WTSSendMessageA handle?
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by: T - Sun, 20 Nov 2022 06:08 UTC

On 11/19/22 21:35, T wrote:
> On 11/19/22 15:45, T wrote:
>> On 11/19/22 03:41, JJ wrote:
>>> On Sat, 19 Nov 2022 01:30:04 -0800, T wrote:
>>>> On 11/19/22 01:24, JJ wrote:
>>>>> On Fri, 18 Nov 2022 23:55:40 -0800, T wrote:
>>>>>> Hi All,
>>>>>>
>>>>>> Windows 11-pro 22H2
>>>>>> https://learn.microsoft.com/en-us/windows/win32/api/wtsapi32/nf-wtsapi32-wtssendmessagea
>>>>>>
>>>>>> WTSSendMessageA states:
>>>>>>
>>>>>>       [in] hServer
>>>>>>
>>>>>>       A handle to an RD Session Host server. Specify
>>>>>>       a handle opened by the WTSOpenServer function,
>>>>>>       or specify WTS_CURRENT_SERVER_HANDLE to indicate
>>>>>>       the RD Session Host server on which your application
>>>>>>       is running.
>>>>>>
>>>>>> If I choose NOT to use "WTS_CURRENT_SERVER_HANDLE",
>>>>>> how to I get my "handle to an RD Session Host server"?
>>>>>>
>>>>>> Many thanks,
>>>>>> -T
>>>>>
>>>>> It's there in the text you just posted.
>>>>
>>>> Hi JJ,
>>>>
>>>> WTS_CURRENT_SERVER_HANDLE is a constant set to 0
>>>>
>>>> I am after the actual handle as I am working in
>>>> an RDP environment. It is not zero.
>>>>
>>>> You can get that handle with
>>>>
>>>> C++
>>>>
>>>> HANDLE WTSOpenServerA(
>>>>     [in] LPSTR pServerName
>>>> );
>>>>
>>>> Now all I am missing is the call to get my
>>>> local computer's server name (and its syntax)
>>>>
>>>> -T
>>>
>>> `GetComputerName()` can be used to get the local computer name. But
>>> using
>>> that name is same as using `WTS_CURRENT_SERVER_HANDLE`. The local
>>> computer
>>> name will always resolve to `127.0.0.1` which is same as `localhost`
>>> when
>>> looked up from local computer.
>>
>>
>> What is the difference between GetComputerName and
>>
>> C++
>>
>> int gethostname(
>>    [out] char *name,
>>    [in] int namelen
>> );
>>
>>
>
> Trivia. I just noticed that "[out] char *name,"
> is in UTF16 format.

Oops. My bad. It is utf8

Re: WTSSendMessageA handle?

<q4m8qkz4rxi7$.pxmmy8hcrnv3.dlg@40tude.net>

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From: jj4public@outlook.com (JJ)
Newsgroups: comp.os.ms-windows.programmer.win32
Subject: Re: WTSSendMessageA handle?
Date: Sun, 20 Nov 2022 21:07:01 +0700
Organization: A noiseless patient Spider
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Message-ID: <q4m8qkz4rxi7$.pxmmy8hcrnv3.dlg@40tude.net>
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by: JJ - Sun, 20 Nov 2022 14:07 UTC

On Sat, 19 Nov 2022 22:08:31 -0800, T wrote:
> On 11/19/22 21:35, T wrote:
>> On 11/19/22 15:45, T wrote:
>>>
>>> What is the difference between GetComputerName and
>>>
>>> C++
>>>
>>> int gethostname(
>>> [out] char *name,
>>> [in] int namelen
>>> );
>>>
>>>
>>
>> Trivia. I just noticed that "[out] char *name,"
>> is in UTF16 format.
>
> Oops. My bad. It is utf8

"Host name" is not same as "computer name".

`GetComputerName()` returns the computer name as specified in the "System
properties" Control Panel.

`gethostname()` returns the (network) host name as specified in the `HOSTS`
file, which is by default is `localhost`.

Re: WTSSendMessageA handle?

<tle5kd$3jii1$3@dont-email.me>

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From: T@invalid.invalid (T)
Newsgroups: comp.os.ms-windows.programmer.win32
Subject: Re: WTSSendMessageA handle?
Date: Sun, 20 Nov 2022 13:19:09 -0800
Organization: A noiseless patient Spider
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by: T - Sun, 20 Nov 2022 21:19 UTC

On 11/20/22 06:07, JJ wrote:
> On Sat, 19 Nov 2022 22:08:31 -0800, T wrote:
>> On 11/19/22 21:35, T wrote:
>>> On 11/19/22 15:45, T wrote:
>>>>
>>>> What is the difference between GetComputerName and
>>>>
>>>> C++
>>>>
>>>> int gethostname(
>>>> [out] char *name,
>>>> [in] int namelen
>>>> );
>>>>
>>>>
>>>
>>> Trivia. I just noticed that "[out] char *name,"
>>> is in UTF16 format.
>>
>> Oops. My bad. It is utf8
>
> "Host name" is not same as "computer name".
>
> `GetComputerName()` returns the computer name as specified in the "System
> properties" Control Panel.
>
> `gethostname()` returns the (network) host name as specified in the `HOSTS`
> file, which is by default is `localhost`.

WTSSendMessageA states:
[in] hServer
A handle to an RD Session Host server. Specify a
handle opened by the WTSOpenServer function
So which of GetComputerName and gethostname should I use?

Re: WTSSendMessageA handle?

<zv94ch63ckk2$.5bb9pf6z2dhr.dlg@40tude.net>

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From: jj4public@outlook.com (JJ)
Newsgroups: comp.os.ms-windows.programmer.win32
Subject: Re: WTSSendMessageA handle?
Date: Mon, 21 Nov 2022 08:23:59 +0700
Organization: A noiseless patient Spider
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by: JJ - Mon, 21 Nov 2022 01:23 UTC

On Sun, 20 Nov 2022 13:19:09 -0800, T wrote:
>
> WTSSendMessageA states:
>
> [in] hServer
>
> A handle to an RD Session Host server. Specify a
> handle opened by the WTSOpenServer function
>
> So which of GetComputerName and gethostname should I use?

GetComputerName, since Windows networking prioritize NetBIOS name.

Re: WTSSendMessageA handle?

<tlfnad$3psh6$1@dont-email.me>

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From: T@invalid.invalid (T)
Newsgroups: comp.os.ms-windows.programmer.win32
Subject: Re: WTSSendMessageA handle?
Date: Mon, 21 Nov 2022 03:27:09 -0800
Organization: A noiseless patient Spider
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by: T - Mon, 21 Nov 2022 11:27 UTC

On 11/20/22 17:23, JJ wrote:
> On Sun, 20 Nov 2022 13:19:09 -0800, T wrote:
>>
>> WTSSendMessageA states:
>>
>> [in] hServer
>>
>> A handle to an RD Session Host server. Specify a
>> handle opened by the WTSOpenServer function
>>
>> So which of GetComputerName and gethostname should I use?
>
> GetComputerName, since Windows networking prioritize NetBIOS name.

Thank you!

This system will self-destruct in five minutes.

devel / comp.os.ms-windows.programmer.win32 / WTSSendMessageA handle?

Subject	Author
WTSSendMessageA handle?	T
WTSSendMessageA handle?	T
WTSSendMessageA handle?	JJ
WTSSendMessageA handle?	T
WTSSendMessageA handle?	JJ
WTSSendMessageA handle?	T
WTSSendMessageA handle?	T
WTSSendMessageA handle?	T
WTSSendMessageA handle?	JJ
WTSSendMessageA handle?	T
WTSSendMessageA handle?	JJ
WTSSendMessageA handle?	T