C / C++ / MFC

Re: Not able to make entries into vista operating system using reg... functions

2-Sep-08 3:04

Something to do with the administrator credentials on VISTA machine... So are you logged on to the VISTA machine with admin privileges and thrn running your application

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Perspx2-Sep-08 5:59

Perspx

2-Sep-08 5:59

Run the application as Administrator Smile | :)

Regards,
--Perspx

"The Blue Screen of Death, also known as The Blue Screen of Doom, the "Blue Screen of Fun", "Phatul Exception: The WRECKening" and "Windows Vista", is a multi award-winning game first developed in 1995 by Microsoft" - Uncyclopedia

Introduction to Object-Oriented JavaScript

Re: Not able to make entries into vista operating system using reg... functions

bob169722-Sep-08 7:01

bob16972

2-Sep-08 7:01

You need to include a security section in your manifest file to prevent Registry and File Virtualization for your application (or have the user turn User Access Control [UAC] off).

I would recommend the manifest resource file with the security section since it allows you to use registry and file functions without getting false positives from virtualization. I use "AsInvoker" for user apps.

"Windows via C/C++, Fifth Edition" by Richter has some good information on dealing with Vista and using manifests correctly.

Re: Not able to make entries into vista operating system using reg... functions

hariakuthota2-Sep-08 19:38

hariakuthota

2-Sep-08 19:38

Can u please make it a bit clear in "turn off the User Access Control [UAC]"....

Re: Not able to make entries into vista operating system using reg... functions

bob169726-Sep-08 5:33

bob16972

6-Sep-08 5:33

Why is it people always gravitate toward the option that I didn't recommend? Poke tongue | ;-P

Turning off UAC is as simple as going to "control panel", "User Accounts", "Turn User Access Control on or off".

However, the system will keep reminding you eternally that your security settings leave you vulnerable. Turning off UAC is really only useful for a simple test to see if your programmatic behavior/problem is related to UAC. You should not design your application with the requirement that the user set their security settings in any particular fashion.

The Microsoft endorsed way of properly designing an application for UAC is to use a security manifest section in your manifest file/resource.

Windows Vista Application Development Requirements for User Account Control Compatibility[^]

Create and Embed an application manifest[^]

Certified for Logo Test Case[^]

how to duplicate object with type_info ?

pedefetoll2-Sep-08 2:52

pedefetoll

2-Sep-08 2:52

I want to duplicate an object, knowing only a base object and the type_info
In following sample, with function DuplicateObject(.), I want to duplicate an object pVarA.
Does anybody have an idea ?

Best regards.

//*****************************************************
class classA
{
public :
classA( string MyComment)
{
_MyComment = MyComment;
}

string _MyComment;
};

//*****************************************************
class classB : public classA
{
public:
classB( string MyComment, string MyOtherComment)
: classA( MyComment)
{
_MyOtherComment = MyOtherComment;
}

string _MyOtherComment;
};

//*****************************************************
void DuplicateObject( classA *pVarA, const type_info& pType)
{
static_cast<ptype> *pVarB = new static_cast<ptype>( ""); // !!! problem

*pVarB = *pVarA; // !!! problem
}

//*****************************************************
void func()
{
// dupplicate object of same class (classic)
classA *pVarA1 = new classA( "hello world !");

classA *pVarA2 = new classA( "");
*pVarA2 = *pVarA1;

// dupplicate object of heritance (problem !!!)
classB *pVarB1 = new classB( "hello world !", "come on !");
DuplicateObject( pVarB1, typeid( pVarB1));
}

Cedric Moonen2-Sep-08 3:02

Cedric Moonen

2-Sep-08 3:02

Please read the posting guidelines before posting (formating of your code).

Do you want to clone an existing object, is that right ? If that's what you want, why don't you simply provide a virtual virtual Clone function in the base class that you redefine for the child classes:

classA* classA::Clone()
{
  return new classA(this);
}

classB* classB::Clone()
{
  return new classB(this);
}

If your classes contains more than simple data (e.g. pointers) you will need to provide a copy constructor in order to adapt it to your need. Otherwise the Clone function will be enough.

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

Gary R. Wheeler2-Sep-08 3:10

Gary R. Wheeler

2-Sep-08 3:10

Why not just provide a copy constructor and be done with it? I don't understand the need for a ::Close() function.

Software Zen: delete this;
Fold With Us![^]

Cedric Moonen2-Sep-08 3:14

Cedric Moonen

2-Sep-08 3:14

If you have polymorphic types in a container and want to duplicate them (or some of them), you don't know the exact type of the object. So, if you have a virtual Clone function, you can simply work with the base class and call the Clone function to have a duplicate of the correct type of your polymorphic object.

Of course, this is used in very specific cases only Smile | :)

Gary R. Wheeler wrote:
::Close() function

It's a Clone function Wink | ;)

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

Gary R. Wheeler2-Sep-08 3:45

Gary R. Wheeler

2-Sep-08 3:45

Okay, okay. It's only 4 keys away on the keyboard... Blush | :O

Software Zen: delete this;
Fold With Us![^]

pedefetoll9-Sep-08 0:24

pedefetoll

9-Sep-08 0:24

Cédric,

Thank you for your answer.
But I think it's more difficult.

classA is the base class for all my messages (objects exchange through mailslots).
classB, classC, etc have herited from classA (they are more sophisticated messages).

My function called "Duplicate" function is in reality a function to send a message of classB, C, etc to SEVERAL mailslots (several destination).
So, I want to "give" my sophisticated message reference with its type (which is typeid( xVar)) to my function, wich will do a loop in order to duplicate the given message as necessary as to send it to ALL the mailslots.
It's the destination thread which delete the object after processing.
So, I want to "clone" the object, but the parameter of the function is of type "classA" (which is common to all types), and the type is only known by TYPEID.

Is there a possibility to do that ?

Best regards

pedefetoll9-Sep-08 2:46

pedefetoll

9-Sep-08 2:46

Ok,
Now I have understand the mechanism.
Only a small detail : all the Clone() methods needs to have the same return type. So it's necessary to cast the returned result :

class classB : public classA
{
//...
}

classA* classA::Clone()
{
return new classA(this);
}

classA* classB::Clone()
{
return (classA *) new classB(this);
}

Thank you.

setup package creation and deployment

Cedric Moonen10-Sep-08 5:57

Cedric Moonen

10-Sep-08 5:57

Hi, sorry for the late answer but I was in holidays.

marcelcerdanjunior wrote:
Only a small detail : all the Clone() methods needs to have the same return type. So it's necessary to cast the returned result :

Not necessarily, you can use a 'covariant return type', which means that your classB::Clone method can return a classB* (because classB inherits from classA). Anyway, you never need to cast classB into classA: classB IS already a classA object.

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

AnithaSubramani2-Sep-08 2:10

2-Sep-08 2:10

Dear All,

My project requirement is VC++ application need to create setup package and deployment in VC++ with out using dll file(im having exe file only).

It will be much helpful to me to give some advice on this..

Thank you very much,

Yours,
Anitha

_AnsHUMAN_ 2-Sep-08 2:13

2-Sep-08 2:13

u looking for NSIS[^] or use Installshield.
Or do you want to create an application installer?

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

AnithaSubramani2-Sep-08 2:23

2-Sep-08 2:23

I have developed a MFC application.I need to create a setup pack for that application.

Thanks & Regards

Anitha

_AnsHUMAN_ 2-Sep-08 2:49

2-Sep-08 2:49

then you can use NSIS or installshield. Even with visual studio you can create setup and deployment project

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

sashoalm2-Sep-08 5:57

sashoalm

2-Sep-08 5:57

We use Inno Setup[^]. It is a very good freeware installer.

There is sufficient light for those who desire to see, and there is sufficient darkness for those of a contrary disposition.
Blaise Pascal

AnithaSubramani3-Sep-08 20:19

3-Sep-08 20:19

Hi sashoalm,

I red that innosetup document.That installation document given for Visual C++ 6.0.But Im using Visual Studio 2005.Is it possible for Visual Studio 2005.

Thanks & Regards

Anitha

sashoalm3-Sep-08 20:59

sashoalm

3-Sep-08 20:59

Yes, it is possible. You just have to create an iss file and specify in it which files are part of the setup.

There is sufficient light for those who desire to see, and there is sufficient darkness for those of a contrary disposition.
Blaise Pascal

AnithaSubramani4-Sep-08 0:43

4-Sep-08 0:43

Hi sashoalm,

I have created the setup package.But i need to install a driver before the exe file execution. Is it possible?

Thanks & Regards

Anitha

send message to view

coding_ram2-Sep-08 2:06

coding_ram

2-Sep-08 2:06

hi
in my application i have one dll ,and 3 views.
when user clicks on one view --dll function is called(mapped to dll fun)
from that function i nead to send message to other view or same view..how to doit can any one give hint.... Smile | :)

Re: send message to view

_AnsHUMAN_ 2-Sep-08 2:11