C / C++ / MFC Discussion Boards

hackcrackvirus wrote:
I want to ask are my following assumptions correct:
1) This registry key stores the last logged on username.

The DefaultUserName value stores the name of the last user to log on to a computer.

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Hi,

I am working on a C++ project, in this I have to change the access of a temporary drive to read only or readwrite. I have code to find the temporary drive but the problem is to change the access properties (Read only, Read Write, Locked etc something like this).

If anyone have any idea to solve this please reply me.

Thanks in advance

ACLs[^]? Disks are objects, you can set ACLs on them, I believe.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

basically i need to change access of the usb device driver to read only
i want to know which api i need to use to make the usb device drive read only
i am using vc++ and visual studio 2005

i didn't understand how the ACL will help here

If you need to do something with the device driver, then you probably need an appropriate IOCTL[^]

Or maybe this article[^] is of relevance?

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

that article explains the procedure for changing access through registry keys. it will fails if we have more than one usb device plugged in to the machine.

i want to use win32 api to change the access of usb device driver through vc++ application.

can you please explain me how can modify the acl of the volume stack of the usb device to make it read only

or is there any setupDi... function which makes a usb driver to read only

What you want is not achieved by adjusting the USB driver.

Stuart is right. You need to learn how to use ACL's if you want to control access to the files and folders on the USB drive.

Nekkantidivya wrote:
i didn't understand how the ACL will help here

Since you are wanting to control access to the device, an Access Control List/Entry will help.

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Iam trying to hook to a window.This window has tab controle in it.In one the page ,ocx is placed.This ocx opens word document using automation.
I want to hook to this word document.Iam getting parent window,then enumerating all child windows till I get the word document.Then, hook to it.Now i want to get cursor position in it.Not able to get proper cursor position.

Please help to get cursor position in child window.
Also Not able to set word document window as foreground window.

You can get the current cursor position in screen coordinates using GetCursorPos[^].
You can then convert that to window relative coordinates using ScreenToClient[^].

«_Superman_»
I love work. It gives me something to do between weekends.

Hello,

I want to create a static library using .net 2008 Framework 3.5 and export a function.
In order to call this function from a vc6 enviroment what project type I should use on the .net Enviroment and how should I call this function from vc6 application?
I would appreciate if you could send me a short code of both sides(.net,vc6) Smile

Thanks in advance...

take a look at this article: Calling Managed .NET C# COM Objects from Unmanaged C++ Code[^]

image processing toolkits | batch image processing

Hi,

in my application was having double space after the toolbar..

i.e., after file menu, there is more gap to the child window.. where do we usually adjust this height??

thanks,
rakesh

Could you please stop spamming the forum ? You posted this 1/2 hour ago. And, as a side note, your question is not clear at all. May I suggest you read the posting guidelines before posting again (this is the message at the top of this forum).

Cédric Moonen
Software developer

Charting control [v2.0]
OpenGL game tutorial in C++

It would be really helpful if you could provide some sort of screen shot exhibiting the problem.

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

can u pls tell me how to attach a screen shot while replying??

sorry for troubling u...

rakesh

Rakesh5 wrote:
can u pls tell me how to attach a screen shot while replying??

http://www.flickr.com/[^]

http://tinyurl.com/6krq69[^]

http://imageshack.us/[^]

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Hello!

I am using a C51 compiler for a microcontroller (so not visual studio)

I am trying to convert a long int variable to a char*, using C-specific functions (no atoi and the rest)

long Value="1234";
char String[15];
sprintf(String,"%d",Value);

This puts in "String" the value "0".

If I make Value of type integer, it works. What seems to be the problem ?
Are there any (other) functions to help me do this ?

Where can I find the source code for ltoa and the family, to declare it ?

Thanks,
Shpid3r

try:

sprintf(String,"%ld",Value);

(that's a lowercase "L" - for "long")

image processing toolkits | batch image processing

shpid3r wrote:
using C-specific functions (no atoi and the rest)

atoi and the rest are all ANSI C functions.

«_Superman_»
I love work. It gives me something to do between weekends.

shpid3r wrote:
long Value="1234";

How does this even compile ? You are trying to assign a string (yes, "1234" is actually a string) to a long. You should at least get a warning here...
Try without the double quotes:

long Value = 1234;

Cédric Moonen
Software developer

Charting control [v2.0]
OpenGL game tutorial in C++

:ashamed of myself: $Shucks | :-\$
I didn`t paste the code, just reproduced it here, and in the hurry I put the quotes...
Of course it won`t compile with them Smile | :)

Great, %ld" works!
Thanks! I spent the last 3h trying to figure this out ... I should have asked sooner!

Regards!
Shpid3r

Just FYI - I'm guessing that (unlike VC++), the C51 compiler has 16-bit ints, which are smaller than longs? And that the C51 is a big-endian chip? WHich would explain the zero result.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Hi,

in my application was having double space after the toolbar..

i.e., after file menu, there is more gap to the main window.. where do we usually adjust this??

thanks,
rakesh

Hi,

I have a program that uses a COM object. At somepoint I try to release the object. After I do the release process, I can see using Process Explorer that the ActiveX DLL is still in memory.

My code is below. Am I doing something wrong? Why is the DLL still in memory?
ComReleaseTest.DLL is a test VB ActiveX DLL I wrote to debug this problem. It does nothing - all it has is one test sub which I am not even calling.

<br />
#include "stdafx.h"<br />
<br />
#import "..\ProductTree\winpos\drv32\ComReleaseTest.dll" no_namespace<br />
<br />
_CComReleaseTestPtr m_Srv;<br />
<br />
int Close();<br />
void ReleaseObject();<br />
<br />
int main(int argc, char* argv[])<br />
{<br />
	HRESULT hResult;<br />
<br />
	try<br />
	{	<br />
		if ( TRUE )<br />
		{<br />
			hResult = CoInitialize( NULL );<br />
<br />
			if ( hResult != S_OK )<br />
			{<br />
				return 1;<br />
			}<br />
		}<br />
<br />
		HRESULT hr = m_Srv.CreateInstance(__uuidof( CComReleaseTest ), NULL, CLSCTX_ALL);<br />
		if (FAILED(hr))<br />
			_com_issue_error(hr);<br />
    }<br />
	catch(_com_error& e)<br />
	{<br />
		return (1);<br />
    }<br />
<br />
	Close();<br />
<br />
	return (0);<br />
<br />
}<br />
<br />
int Close()<br />
{<br />
	long Result = 0;<br />
<br />
	if ( m_Srv != NULL )<br />
    {<br />
		TRY<br />
		{<br />
			ReleaseObject();<br />
		}<br />
		CATCH_ALL(e)<br />
		{<br />
			TCHAR sError[255];<br />
			e->GetErrorMessage(sError,255);<br />
		}<br />
		END_CATCH_ALL<br />
	}<br />
<br />
	return ( (short)Result );<br />
}<br />
<br />
<br />
<br />
void ReleaseObject()<br />
{<br />
<br />
	// Disconnect from VB ActiveX<br />
	try<br />
	{<br />
		m_Srv.Release();<br />
	}<br />
	catch(_com_error& e)<br />
	{<br />
	   //<br />
	}<br />
<br />
	free(m_Srv);<br />
	m_Srv.Detach();<br />
	<br />
<br />
	m_Srv = NULL;<br />
<br />
}<br />
<br />
<br />

The reason I am trying to track this is that I have anotehr program that at somepoint calls an InstallShield 5.5 setup. This setup.exe hangs at 99% and I found that if my program does not call a certain ActiveX then there is no problem with the setup.exe. So I am trying to release that ActiveX before calling setup.exe, but the COM DLL just stays in memory!