Making a copy of the object inside the object - C / C++ / MFC Discussion Boards

Re: difference between static_cast and dynamic cast?

Cedric Moonen25-Mar-08 23:55

Cedric Moonen

25-Mar-08 23:55

Here[^] is a very good article about the different C++ cast operators.

Cédric Moonen
Software developer

Charting control [v1.3]

Re: difference between static_cast and dynamic cast?

CPallini26-Mar-08 0:05

CPallini

26-Mar-08 0:05

For instance, they have different pages on MSDN Visual C++ Language Reference:

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

Re: difference between static_cast and dynamic cast?

BadKarma26-Mar-08 2:54

BadKarma

26-Mar-08 2:54

You have to admit that it isn't easy to find this information.
Not everyone knows that when you need the help of static_cast you need the c36yw7x9(VS.80).aspx page and for the dynamic_cast yoe need the cby9kycs(VS.80).aspx

codito ergo sum

Re: difference between static_cast and dynamic cast?

CPallini26-Mar-08 3:08

CPallini

26-Mar-08 3:08

It's called cryptographic help. Poke tongue | ;-P

C++ UAC elevation error on code

spiced25-Mar-08 23:36

spiced

25-Mar-08 23:36

hi!

i have this particular code that is running correctly on XP but not in Vista due to elevation error. i'm a newbie on com and i just couldnt figure out how to to apply UAC elevation on calling the below code..

CoInitialize(NULL);

INetConnectionManager *pNetConnectionManager = NULL;
HRESULT hr = CoCreateInstance(CLSID_ConnectionManager,
NULL,
CLSCTX_LOCAL_SERVER | CLSCTX_NO_CODE_DOWNLOAD,
IID_INetConnectionManager,
reinterpret_cast<lpvoid *="">(&pNetConnectionManager)
);

Note: hr always return fail due to elevation error. it'll help me a lot to get some feedbacks on what i missed. thanks Smile | :)

about C++ and MFC

Re: C++ UAC elevation error on code

Rajasekharan Vengalil26-Mar-08 0:12

Rajasekharan Vengalil

26-Mar-08 0:12

You don't get the failure code when you run the app under elevation? Also, I am a bit curious about this INetConnectionManager interface. What kind of component interface is this? It may have something to do with what this component does during initialization. Instantiating a component per se should not require elevation.

--
gleat
http://blogorama.nerdworks.in[^]
--

Number Two's eyes narrowed and became what are known in the Shouting and Killing People trade as cold slits, the idea presumably being to give your opponent the impression that you have lost your glasses or are having difficulty keeping awake. Why this is frightening is an, as yet, unresolved problem. -- HHGTG

Desktop item postion - Shell programming

tom87@2125-Mar-08 23:31

tom87@21

25-Mar-08 23:31

Hi !

I've to retrieve and change desktop items position in a C++ program.
I can't use MFC/ATL technology, I've to use COM API and simple Win32 API.

For the moment, I use the remote process memory operations to work, but it should not work in some circumstances.

I've heard it could be done by using the Shell API, by querying a IFolderView/IShellView interface from the desktop namespace.
I tried it from SHGetDesktopFolder to get the IShellFolder interface, but I can't go further.
When I try to query the IShellView interface, I get the error "Not Implemented".

Could you tell me how to do or link me some tutorials about Desktop Shell programming.

In brief, I've to use C++ "pure" COM Shell Programming to get and change desktop items position, like if the user was dragging them.

Thanks for answers.
Tom

Making a copy of the object inside the object

piul25-Mar-08 23:00

piul

25-Mar-08 23:00

Good morning (in this side of the world),

Can a copy constructor be used by a method inside the object that wants to be copied??

class Cobj{
...
Cobj(const Cobj &);    //Copy constructor
void MyFunc();
};

void Cobj::MyFunc()
{
//Can I use the copy constructor here to make a copy of this object???
  Cobj NewObj(????)  ;
// What do you put in the parameters?? the pointer 'this' can't be used because it's a pointer
// not a 'const Cobj &'
}

Re: Making a copy of the object inside the object

CPallini25-Mar-08 23:14

CPallini

25-Mar-08 23:14

piul wrote:
(in this side of the world),

piul wrote:
Can a copy constructor be used by a method inside the object that wants to be copied??

Yes.

piul wrote:
void Cobj::MyFunc()
{
//Can I use the copy constructor here to make a copy of this object???
Cobj NewObj(????) ;
// What do you put in the parameters?? the pointer 'this' can't be used because it's a pointer
// not a 'const Cobj &'
}

the parameter should be *this (i.e. Cobj NewObj(*this);) you can use *this whenever a reference to this object is needed.
Smile | :)

Re: Making a copy of the object inside the object

piul25-Mar-08 23:22

piul

25-Mar-08 23:22

Of course!! ... oh man... my brain must be in the other side of the world...

Thanks!!

How to enable the Maximize itemin System Menu for MFC appplications??

Vikas_12325-Mar-08 22:37

Vikas_123

25-Mar-08 22:37

Hi I am trying to enable the maximixe item in system menu.

Here is the code what I am trying.

CMenu *pSystemMenu = m_pMainWnd->GetSystemMenu(false);

if( pSystemMenu != NULL )
{
pSystemMenu->EnableMenuItem(SC_MAXIMIZE,MF_ENABLED);

}
But It i not getting enabled.
Should I havwe to do anyting more?

With Reagards
Vikas

Re: How to enable the Maximize itemin System Menu for MFC appplications??

Rajasekharan Vengalil26-Mar-08 0:04

Rajasekharan Vengalil

26-Mar-08 0:04

Try this:

CWnd *pWnd = AfxGetApp()->m_pMainWnd;
if( pWnd->GetStyle() & WS_MAXIMIZEBOX )
  pWnd->ModifyStyle( WS_MAXIMIZEBOX, 0 );
else
  pWnd->ModifyStyle( 0, WS_MAXIMIZEBOX );

pWnd->RedrawWindow(NULL, NULL, RDW_FRAME | RDW_INVALIDATE | RDW_UPDATENOW );

--
gleat
http://blogorama.nerdworks.in[^]
--

Re: How to enable the Maximize itemin System Menu for MFC appplications??

Vikas_12326-Mar-08 1:20

Vikas_123

26-Mar-08 1:20

So I how do I Resize all the controls in my mainWindow to be proportionate with the size of the mainWindow?

With Reagards
Vikas

Re: How to enable the Maximize itemin System Menu for MFC appplications??

Rajasekharan Vengalil26-Mar-08 1:26

Rajasekharan Vengalil

26-Mar-08 1:26

Here are a few options:

Write the code yourself
Google for a solution
Post what you have already done here and indicate what you are having trouble with

And while you're at it, saying "please" and "thank you" is probably a good idea!

--
gleat
http://blogorama.nerdworks.in[^]
--

Re: How to enable the Maximize itemin System Menu for MFC appplications??

Vikas_12326-Mar-08 1:57

Vikas_123

26-Mar-08 1:57

Okies Dude! Thanx!

With Reagards
Vikas

Which is Better VC++ or C# ??

Amit4u25-Mar-08 22:35

Amit4u

25-Mar-08 22:35

For real time application (Back End Exe and no GUI) which require interaction with Oracle, mathematical computations and use of multithreading also, which application will give better performance (exe executions time and memory management) VC++ / C#? And why?

xyz

Re: Which is Better VC++ or C# ??

CPallini25-Mar-08 22:49

CPallini

25-Mar-08 22:49

The one you know better.
Smile | :)

Re: Which is Better VC++ or C# ??

ThatsAlok25-Mar-08 23:34

ThatsAlok

25-Mar-08 23:34

definatly VC++! and i also agree with guy who answer before me ! i.e. the langauge you know better

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
Never mind - my own stupidity is the source of every "problem" - Mixture

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You/codeProject$$>

How many times do you plan to ask this question

led mike26-Mar-08 4:20

led mike

26-Mar-08 4:20

If you have to ask this question then I suggest you get someone else to develop the application if you are concerned about performance issues.

led mike

Re: Which is Better VC++ or C# ??

Mark Salsbery26-Mar-08 5:52

Mark Salsbery

26-Mar-08 5:52

I'm going with C++ all the way, but that's my opinion.

If C# was the answer you were looking for, then ask the same question on the C# board Smile | :)

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: Which is Better VC++ or C# ??

Stephen Hewitt26-Mar-08 14:02

Stephen Hewitt

26-Mar-08 14:02

That would depend on many things including:
- Who you ask.
- What you're doing.
- Which one you know best.

Steve

COM doubt?

rowdy_vc++25-Mar-08 20:44

rowdy_vc++

25-Mar-08 20:44

hi
i dont know wat is mean by COM in VC++? so please tell me procedure for study the COM project?

*****THANKS N ADVANCE****
Mathen.K
(I WILL TRY MY LEVEL BEST )

Re: COM doubt?

Peter Weyzen25-Mar-08 21:16

Peter Weyzen

25-Mar-08 21:16

See the great wikipedia: COM[^]

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br />
Peter Weyzen<br />
Staff Engineer<br />
<a href="http://www.soonr.com">SoonR Inc -- PC Power delivered to your phone</a>

Re: COM doubt?

ThatsAlok25-Mar-08 23:39

ThatsAlok

25-Mar-08 23:39

http://www.codeproject.com/KB/COM/[^]

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You/codeProject$$>

Need Help on ATL project

manish.patel25-Mar-08 20:43

manish.patel

25-Mar-08 20:43

Hello All

I am Developing ATL Project in which i have added ATL Dialog.

Now on this Dialog i want to add ShockwaveFlash Activex Control.
I am able to add this control but Problem is that i can not add Variable to this Control.
So is there anybody who can solve my problem?

Any help will be appriciated

Thanks i advance

Manish Patel.
B.E. - Information Technology.

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