Re: int const& - C / C++ / MFC Discussion Boards

Re: int const&

George_George17-Feb-08 16:25

George_George

17-Feb-08 16:25

Thanks Rajkumar,

My question is answered.

regards,
George

Re: int const&

Priyanka sabharwal7-Aug-08 20:58

Priyanka sabharwal

7-Aug-08 20:58

Hi george,
Why had ref been implimented in this way that its a 'const' implictly. Why can not a reference when once bound to an object at time of declaration be allowed to bound to some other object? why this kind of restriction?

Regards
Priyanka

Re: int const&

George_George9-Aug-08 1:29

George_George

9-Aug-08 1:29

Please try the following sample code,

int main()
{
	int a = 10;
	int b = 20;
	// if using const int& p, will not compile
	int& pi = a;
	pi = b;
	
	return 0;
}

regards,
George

Re: int const&

Hamid_RT18-Feb-08 7:27

Hamid_RT

18-Feb-08 7:27

See this[^] thread if helpfuls for you.

Re: int const&

George_George18-Feb-08 19:47

George_George

18-Feb-08 19:47

Thanks Hamid,

I have read the link, but I do not think it relates to my question. The discussion is about const reference to temporary object, but I am talking about whether int const& or const int& is better. Smile | :)

regards,
George

Re: int const&

Hamid_RT18-Feb-08 20:08

Hamid_RT

18-Feb-08 20:08

No it was for const& not your question I think its helpful for you,ok? Wink | ;)

Re: int const&

George_George18-Feb-08 20:12

George_George

18-Feb-08 20:12

Sure, helpful. Thanks Hamid!

regards,
George

Re: int const&

Hamid_RT18-Feb-08 20:44

Hamid_RT

18-Feb-08 20:44

You're welcome.

Re: int const&

George_George18-Feb-08 20:54

George_George

18-Feb-08 20:54

Thanks for your continuous help, Hamid!

Hope we can always have other topics to discuss in the future. Smile | :)

regards,
George

Re: int const&

Hamid_RT18-Feb-08 21:18

Hamid_RT

18-Feb-08 21:18

It depends to your questions,you must ask easy question. Laugh | :laugh:

Determining OS type: 32-bit or 64-bit, programmatically.

eyalbi00716-Feb-08 21:45

eyalbi007

16-Feb-08 21:45

Hi all,

I need to determine during runtime whether I'm dealing with a 32-bit or 64-bit OS, in order to decide which .NET installation file to run.

What's the way of knowing that? Is there a certain registry entry I should read in order to retrieve this information?

Thanks,
Eyal.

Re: Determining OS type: 32-bit or 64-bit, programmatically.

Garth J Lancaster16-Feb-08 22:56

Garth J Lancaster

16-Feb-08 22:56

note sure about 32 vs 64 bit but these are a start :-

http://www.codeproject.com/KB/system/XWinVer.aspx[^]

http://www.codeproject.com/KB/system/osversion.aspx[^]

'g'

Re: Determining OS type: 32-bit or 64-bit, programmatically.

eyalbi00716-Feb-08 23:47

eyalbi007

16-Feb-08 23:47

Hi,

After fast look, it seems like:
The first link does not support 64-bit OS (e.g windows xp x64).
The second is a C# project which I can't use since .NET framework is not installed - that's my project purpose: check if .net is installed, and if not - install it.

Thanks!

Re: Determining OS type: 32-bit or 64-bit, programmatically.

Robert M Greene17-Feb-08 6:09

Robert M Greene

17-Feb-08 6:09

Try this...

http://blogs.msdn.com/oldnewthing/archive/2005/02/01/364563.aspx[^]

.............................
Two words you don't ever want to hear.

"Fix bayonets"

Re: Determining OS type: 32-bit or 64-bit, programmatically.

Garth J Lancaster17-Feb-08 10:04

Garth J Lancaster

17-Feb-08 10:04

if Robert's Link Doesnt give you what you want, there's a link/code in this blog :- http://blogs.msdn.com/astebner/archive/2004/09/18/231253.aspx[^]

or this one right here in CP :- http://www.codeproject.com/KB/dotnet/DetectDotNet.aspx[^]

C++ And XFS

Buddhika Jayasinghe16-Feb-08 19:52

Buddhika Jayasinghe

16-Feb-08 19:52

Hi,

Our client have a printer and its shared using "Nexus XFSConnect Branch Edition". Application software is communicating with Nexus layer and access the printer. We need to access that printer from another application. But we don't have permission to access Nexus layer. Then the only option is, we have to write a wrapper to communicate with XFS (http://en.wikipedia.org/wiki/CEN/XFS[^]) layer.

I got XFS specifications and SDK also. But it seems complicated. Is anyone has a C++ or MFC code to access a service on XFS? I can manage the device specific calls. Just need a code to establish a session and request device access from XFS. Please help me on this.

Regards,
Buddhika

Registry

Bram van Kampen16-Feb-08 14:38

Bram van Kampen

16-Feb-08 14:38

I Used 'RegSetValue(..)' to add a leaf to the registry. It came out NOT as a new Leaf' but as a new Branch by the Key Name, and the Value added under "Default". How do I get a New Leave.

Regards Bram.

Bram van Kampen

Re: Registry

CPallini16-Feb-08 23:21

CPallini

16-Feb-08 23:21

RegCreateKey [^] or RegCreateKeyEx [^]
Smile | :)

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: Registry

Bram van Kampen17-Feb-08 3:17

Bram van Kampen

17-Feb-08 3:17

Thanks,

Yes, I'm aware of that, but, when I write:
RegCreateKeyEx(HKEY_LOCAL_MACHINE,"Software\\MyCompany\\Product\\,
0,NULL,REG_OPTION_NON_VOLATILE,KEY_WRITE,NULL,&Key,NULL)

and then

RegSetValue(Key,"Path",REG_SZ,"C:\\MyDir",cbData);

I end up with:
HKEY_LOCAL_MACHINE\\Software\\MyCompany\\Product\\Path\\
Default=C:\\MyDir

I want to end up with:
HKEY_LOCAL_MACHINE\\Software\\MyCompany\\Product\\Path=C:\\MyDir

I.e. I want to create a Leaf named "Path", I get a Branch named Path
Confused | :confused:

Bram van Kampen

Re: Registry

Rajkumar R17-Feb-08 3:52

Rajkumar R

17-Feb-08 3:52

Bram van Kampen wrote:
I want to end up with:
HKEY_LOCAL_MACHINE\\Software\\MyCompany\\Product\\Path=C:\\MyDir

I.e. I want to create a Leaf named "Path", I get a Branch named Path

RegCreateKeyEx(HKEY_LOCAL_MACHINE,"Software\\MyCompany\\,
0,NULL,REG_OPTION_NON_VOLATILE,KEY_WRITE,NULL,&Key,NULL)

RegSetKeyValue(key, "Product", "Path", REG_SZ, "C:\\MyDir",cbData);

Re: Registry

Bram van Kampen17-Feb-08 6:19

Bram van Kampen

17-Feb-08 6:19

Thanks!

yes, Thats's great! That function is oly four days old.
Requires Vista though. There must be another way which works in XP.

Bram van Kampen

Re: Registry

Rajkumar R17-Feb-08 17:14

Rajkumar R

17-Feb-08 17:14

RegSetValueEx ?

RegCreateKeyEx(HKEY_LOCAL_MACHINE,"Software\\MyCompany\\Product\\,
0,NULL,REG_OPTION_NON_VOLATILE,KEY_WRITE,NULL,&Key,NULL)

and then

RegSetValueEx (Key,"Path", 0, REG_SZ,"C:\\MyDir", cbData);

Re: Registry

Hamid_RT18-Feb-08 7:18

Hamid_RT

18-Feb-08 7:18

See A Registry Class[^].

Capture the ID Button clicked by mouse in a game

Rafael Pacheco16-Feb-08 13:37

Rafael Pacheco

16-Feb-08 13:37

how can i capture a id from a clicked button, in a game
i search and found only things for classes and dialogs, but not for a game
i want to captude an id from the Flight Simulator, some buttons and controls
how can i do it?
tks

Sigh | :sigh:

Re: Capture the ID Button clicked by mouse in a game

Rajkumar R17-Feb-08 2:26

Rajkumar R

17-Feb-08 2:26

u mean ID of control in a game UI? usually games use their own GUI system, i don't think it behaves like dialog controls to give an ID.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.