Re: CComBSTR to string - C / C++ / MFC Discussion Boards

Shay Harel11-Aug-04 6:19

11-Aug-04 6:19

Well,

We know that services are not like a process, yuo can't just kill them.
So, how can we shut down a service programmatically ?

Thanks,
Shay

Re: Shut down a service programmatically

User 665811-Aug-04 7:34

User 6658

11-Aug-04 7:34

"net stop <servicename>" should would. You can use ShellExecute for this purpose.

regards

modified 12-Sep-18 21:01pm.

Re: Shut down a service programmatically

Graham Bradshaw11-Aug-04 7:58

Graham Bradshaw

11-Aug-04 7:58

Use the ControlService function.

Re: Shut down a service programmatically

Shay Harel11-Aug-04 10:19

Shay Harel

11-Aug-04 10:19

Great answer, but....
Why it is not compiling ?
I tried the simple exmaple from MSDN and it will show SC_HANDLE as error.

Do I need to compile differently ?

Shay

Re: Shut down a service programmatically

Antony M Kancidrowski12-Aug-04 0:58

Antony M Kancidrowski

12-Aug-04 0:58

What code have you written and what is the exact error message?

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Williams (Little Britain)

Re: Shut down a service programmatically

Shay Harel12-Aug-04 3:29

Shay Harel

12-Aug-04 3:29

Let's see, actually I was able to solve this one, but I have another stupid question.

Why wouldn't printf compile for me ?????

Here is the exact code

<br />
#include <<windows.h>> <-ignore the extra <, it's there because of HTML<br />
#include <<stdio.h>><br />
#include "stdafx.h"<br />
<br />
<br />
int APIENTRY WinMain(HINSTANCE hInstance,<br />
                     HINSTANCE hPrevInstance,<br />
                     LPSTR     lpCmdLine,<br />
                     int       nCmdShow)<br />
{<br />
 	int nRetCode = 0;<br />
<br />
	<br />
	SERVICE_STATUS status;//the status for the stop request<br />
	SC_HANDLE hService;//a handle to the SGDB service<br />
	SC_HANDLE hSCManager;// a handle to the services database<br />
<br />
	<br />
	//open the service manager<br />
	hSCManager = OpenSCManager (NULL,NULL,SC_MANAGER_ALL_ACCESS);<br />
<br />
	//open the SGDB service<br />
	hService = OpenService(hSCManager,"tlntsvr",SC_MANAGER_ALL_ACCESS);<br />
	DWORD d=GetLastError();<br />
  <br />
	//stop the service<br />
	if (ControlService(hService,SERVICE_CONTROL_STOP,&status)==0)<br />
	{<br />
		d=GetLastError();<br />
		printf ("Error");<br />
		return -1;<br />
	}<br />
<br />
	CloseServiceHandle (hService);//close the handle to the SGDB service<br />
	CloseServiceHandle (hSCManager);//close the connection to the services datavbase<br />
<br />
<br />
<br />
	return nRetCode;<br />
<br />
	return 0;<br />
}<br />

error C2065: 'printf' : undeclared identifier

CComBSTR to string

pocketpool11-Aug-04 5:56

pocketpool

11-Aug-04 5:56

Hi,

I'm having a terrible time just trying to convert a CComBSTR to a string not char *, but string from <string.h>. Can anyone help? Or how about VARIANT to string - but I think its the same problem because it seems that I have to use the bstrval property of a VARIANT.

Re: CComBSTR to string

Jaime Stuardo11-Aug-04 6:36

Jaime Stuardo

11-Aug-04 6:36

You can use OLE2A macro, for example,

USES_CONVERSION;
CComBSTR bstrSource = "Text to convert";
std::string sTarget = OLE2A(bstrSource);

Jaime

Re: CComBSTR to string

pocketpool11-Aug-04 11:22

pocketpool

11-Aug-04 11:22

Thank you very much - that has made the next 2 crappy days 4 me better Smile | :)

How can I tell if I'm running as a service?

JT Anderson11-Aug-04 5:35

JT Anderson

11-Aug-04 5:35

I have an application that should be able to run either as a service or as a
user mode application. Currently, I call StartServiceCtrlDispatcher and if
it fails (error 1063) I run as user mode. But, StartServiceCtrlDispatcher
often takes several seconds before it fails when I'm running the app in user
mode, causing an annoying startup delay.

Can someone suggest a fast way to tell whether or not my application is
being started as a service? (Please do not suggest using command line
options.)

--------
There are 10 types of people in this world. Those who know binary and those who don't.

Re: How can I tell if I'm running as a service?

Ryan Binns11-Aug-04 18:42

Ryan Binns

11-Aug-04 18:42

JT Anderson wrote:
Can someone suggest a fast way to tell whether or not my application is
being started as a service? (Please do not suggest using command line
options.)

I'm not sure what you've got against command line options - it would be the simplest solution...

You could call GetProcessWindowStation() and if it returns NULL, it is probably either running as a service or as a WTS process. If it is not NULL, then it was probably started by the user. Not perfect though.

Another way would be to get the user name that the process was started as. Generally services are run as the "Local Service" user (or something similar, can't remember exactly).

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Memory problem in CSharedFile.

Aditya_Palanki11-Aug-04 4:47

Aditya_Palanki

11-Aug-04 4:47

Hi,

I found a peculiar problem when using CSharedFile.

Requirement:
I have data present in (BYTE*) which needs to be converted to HGLOBAL. The data is segmented, that is the entire data is present in 2-3 BYTE*.

What was done:
a) Created a CSharedFile and attached it to a CArchive object. Then the entire BYTE* data was archived using a while loop for each BYTE*.
b) Called CSharedFile::Detach to obtain the HGLOBAL data.

Problem:
The actual size of the data is 1184 bytes. But when checking the actual size of the memory allocated using GlobalSize() function the return value was 8192!!!

Please let me know what could be the reason for this?
You can reach me at s_adityapalanki@yahoo.com

Thanks and regards,
Aditya Palanki

Re: Memory problem in CSharedFile.

Johan Rosengren11-Aug-04 6:25

Johan Rosengren

11-Aug-04 6:25

This is the documented behaviour for GlobalSize.

Re: Memory problem in CSharedFile.

Aditya_Palanki13-Aug-04 0:26

Aditya_Palanki

13-Aug-04 0:26

Dear Johan,

Does this mean that the extra memory that is being allocated is normal?
Can you suggest any other way of creating an HGLOBAL?

Regards,
Aditya Palanki

Re: Memory problem in CSharedFile.

Johan Rosengren13-Aug-04 0:34

Johan Rosengren

13-Aug-04 0:34

Aditya_Palanki wrote:
Does this mean that the extra memory that is being allocated is normal?

Yes, it allocates in blocks. If your allocation size is not an exact multiple of the block, you'll get extra padding.

Aditya_Palanki wrote:
Can you suggest any other way of creating an HGLOBAL?

GlobalAlloc is the way of doing it. If the receiver needs to know the size actually allocated, just add this value to the beginning of the block, for example.

ESC And Enter key's

Larsson11-Aug-04 4:31

Larsson

11-Aug-04 4:31

Hello,
When you press ESC or Enter on the dialog the dialog will close. How can I remove this I don't want my dialog to close.

Re: ESC And Enter key's

Antony M Kancidrowski11-Aug-04 4:48

Antony M Kancidrowski

11-Aug-04 4:48

This is in the FAQ

http://www.codeproject.com/cpp/cppforumfaq.asp#mfc_dlgclosekeys[^]

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Williams (Little Britain)

Re: ESC And Enter key's

Larsson11-Aug-04 4:55

Larsson

11-Aug-04 4:55

Thank it work ok.

Passing Array of Strings as BSTR*

arun140511-Aug-04 3:55

arun1405

11-Aug-04 3:55

Hi Folks,

I am trying to access a java webservice from Visual C++ .NET.

This java webservice has following method.
public void CreateDoc(String[][] values);

When I add webreference to this webservice in my visual studio .net environment, it changes the method to look like as following.

HRESULT CreateDoc(BSTR* arrayOfarrayOfString_1, int arrayOfarrayOfString_1_nSizeIs);

So, now in my visual c++ code, I have to pass a string array in this above format of BSTR*. I have tried a lot achieving this but no success !

Can anyone give me some idea how to do that ?

Thanks in advance,
Arun.

Re: Passing Array of Strings as BSTR*

Antony M Kancidrowski11-Aug-04 4:34

Antony M Kancidrowski

11-Aug-04 4:34

Are you using SafeArrayAccessData before manipulation the BSTR* array?

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Williams (Little Britain)

Re: Passing Array of Strings as BSTR*

eight22-Feb-10 15:59

eight

22-Feb-10 15:59

Arun, did you manage to find a way to do it?

Syntax Error NOT!

jerry0davis11-Aug-04 3:47

jerry0davis

11-Aug-04 3:47

I'm half asleep today. I ended up writing the following code....

printf("rta %s %s\n", "router""jmd", token);

Even the linux gnu c compiler compiles it OK!

Mad | :mad:

I feel like I'm diagonally parked in a parallel universe

Jerry Davis
http://www.astad.org
http://www.jvf.co.uk

Re: Syntax Error NOT!

David Crow11-Aug-04 3:52

David Crow

11-Aug-04 3:52

Jeremy Davis wrote:
Even the linux gnu c compiler compiles it OK!

I'm with the compiler. I see nothing wrong with the statement. What do you think is wrong?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: Syntax Error NOT!

jerry0davis11-Aug-04 4:00

jerry0davis

11-Aug-04 4:00

It's the "string1""string2" bit. It becomes "string1string2". I just never realised you could add strings like that.

My bad then!

I feel like I'm diagonally parked in a parallel universe

Jerry Davis
http://www.astad.org
http://www.jvf.co.uk

Re: Syntax Error NOT!

David Crow11-Aug-04 4:13

David Crow

11-Aug-04 4:13

There's really nothing special about it. String constants occupy a spot in memory, and two, contiguous, quoted strings will be right next to each other. Consider the following:

char *pszName = "A really long string here" \
                "...and the rest of it here.";

results in pszName pointing to "A really long string here...and the rest of it here." in memory.

Make sense?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

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