Re: Classes - C / C++ / MFC Discussion Boards

Re: File Selection

Lampros Giampouras15-May-05 1:05

Lampros Giampouras

15-May-05 1:05

Thanks I'll try that.. Smile | :)

What does this type defination mean?

sacoskun14-May-05 4:34

sacoskun

14-May-05 4:34

enum {HASH_TABLE_SIZE = 101};<br />
typedef ChainNode * HashTableType[HASH_TABLE_SIZE];

I could not get the point, can someone explain what 2nd line of the code does to me?

Best wishes,

Kromozom

Re: What does this type defination mean?

peterchen14-May-05 23:14

peterchen

14-May-05 23:14

defines a new type, HashTableType, to be an array of length HASH_TABLE_SIZE of type ChainNode *

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Re: What does this type defination mean?

sacoskun15-May-05 4:31

sacoskun

15-May-05 4:31

Thanks Peter, this one was a confusing type definition Smile | :)

MS Word Automation

Imtiaz Murtaza14-May-05 2:36

Imtiaz Murtaza

14-May-05 2:36

Dear Friends,

My application is opening an instance of MS-Word using automation. My application is thus receiving all events sent by that instance of MS-Word.

Now I want to get key stroke events on that instance of MS word. i.e if user press Ctrl+A while typing in MS-Word, i want my application to get notified. How can i do so ??

I already obtained the 'handle' of that instance of MS-WORD which is opened by my application via automation. Please give me your suggestions.

Imtiaz

Classes

SuperTank14-May-05 1:49

SuperTank

14-May-05 1:49

Hi,
I´m trying to make a 1d array of classes but havent really got it working that good.

This is what I´ve done:

Enemy	**enemy;<br />
enemy = new Enemy*[2];<br />
enemy[0] = new Enemy(g_lpDDSBack, hInstance, g_pDD, 100, 0, 48, 48, NULL);<br />
enemy[1] = new Enemy(g_lpDDSBack, hInstance, g_pDD, 300, 0, 48, 48, NULL);<br />
<br />
ofstream fout;<br />
fout.open("output.txt");<br />
fout << enemy[0]->PrintDestX() << endl;<br />
fout << enemy[1]->PrintDestX() << endl;<br />
fout.close();

Obviously what I´m trying to do is to set enemy[0]´s DestX to 100 and enemy[1]´s DestX to 300.
The thing is, when I´m printing out both enemies DestX both says 300.

What am I doing wrong, or should do diffrent?

Thanks. Smile | :)

Re: Classes

Ravi Bhavnani14-May-05 4:07

Ravi Bhavnani

14-May-05 4:07

Can you post the implementation of the Enemy constructor?

/ravi

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Re: Classes

SuperTank14-May-05 11:55

SuperTank

14-May-05 11:55

Is this what u want?

Enemy.h

class Enemy: cSurface<br />
{<br />
public:<br />
	Enemy(LPDIRECTDRAWSURFACE7 lpDest, HINSTANCE hInst, LPDIRECTDRAW7 hDD,<br />
		int destX, int destY, int nWidth, int nHeight, <br />
		COLORREF dwColorKey = -1);<br />
	Enemy();<br />
	~Enemy();<br />
	int PrintDestX(){return DestX;}<br />
	int PrintDestY(){return DestY;}<br />
...<br />
private:<br />
	static int Width, Height, DestX, DestY;<br />
}<br />

Enemy.cpp

int Enemy::Width;<br />
int Enemy::Height;<br />
int Enemy::DestX;<br />
int Enemy::DestY;<br />
<br />
Enemy::Enemy(LPDIRECTDRAWSURFACE7 lpDest, HINSTANCE hInst, LPDIRECTDRAW7 hDD,<br />
			 int destX, int destY, int nWidth, int nHeight,<br />
			 COLORREF dwColorKey)<br />
{<br />
	Alive = true;<br />
<br />
	hInstance	 = hInst;<br />
	surface		 = lpDest;<br />
	lpDD		 = hDD;<br />
	Width		 = nWidth;<br />
	Height		 = nHeight;<br />
	DestX		 = destX;<br />
	DestY		 = destY;<br />
<br />
	this->Create(hDD, nWidth, nHeight, RGB(255, 0, 255));<br />
	this->LoadBitmap(hInst, IDB_ENEMY, 0, 0, 48, 48);<br />
}

Re: Classes

Bob Stanneveld15-May-05 3:00

Bob Stanneveld

15-May-05 3:00

Hello,

I see your problem. change:
static int Width, Height, DestX, DestY;
to:
int Width, Height, DestX, DestY;

Your problem lies in the static qualifier. If you make member variables of one class static, than the viariable is shared among all instances of that class. If you remove the static qualifier, than each class has it's own copy of the variable.

I also got the blogging virus..[^]

Re: Classes

David Crow15-May-05 16:49

David Crow

15-May-05 16:49

SuperTank wrote:
I´m trying to make a 1d array of classes...

This is what I´ve done:

Enemy **enemy;

This is not the correct way to implement a one-dimensional array. Technically, an array is one-dimensional by default. See here for an example of a 3D array.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Connect to server & read html page

RamL14-May-05 0:48

RamL

14-May-05 0:48

Sir,

I am using VC++.
Suppose I have a html page on the Net server. The page has a table, in that table this value is stored like 100.200.300.400. So now I want to read it from the Net server & store it in the VC++ base application.

So please would you provide me some useful info.

Thanks in advance.

Regards,
Ramesh. D'Oh! | :doh:

Re: Connect to server & read html page

ThatsAlok14-May-05 0:54

ThatsAlok

14-May-05 0:54

this article will help you in retrieving HTML pages form Internet server/Domain

http://www.codeproject.com/internet/amhttputils.asp[^]

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta

Re: Connect to server & read html page

Ravi Bhavnani14-May-05 4:09

Ravi Bhavnani

14-May-05 4:09

As Alok has pointed out, you can use Ander's AmHttpUtilities class. If you need to do more involved parsing of the HTML content, see this[^] article.

/ravi

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Re: Connect to server & read html page

RamL15-May-05 19:50

RamL

15-May-05 19:50

Thanx, Ravi & Alok.

Adding User Credentials

ernst.maurer13-May-05 23:40

ernst.maurer

13-May-05 23:40

Hello.

I have following problem. I add user credentials (on WinCE, but i think on Win32 it's similarly) using function CeCredWrite(...).
There are CECREDENTIAL struct as parameter of this function. And I fill all fields of this struct with one exception - I don't know how I can fill CredentialBlob field (this field is for password in my way) because there must password in "NTLM format" as written in MSDN, I think there is hash of plain password string, but how can get this hash?
What functions are for getting hash of password in NTLM format?

Thanks
Ernst Maurer

MFC Sockets

cberam13-May-05 23:39

cberam

13-May-05 23:39

Hi,

I have a MFC app with no dialogs,document/view.I have derived my class from CWinApp.

My question is :
1.At one point My application has to wait for socket connections(act as server).how to write a code for this?.I'm using CAsyncSocket.

2.How to write a message loop/pumps for socket connections/messages?

Pls help .I'm struggling.

Thnaks
Ram

Re: MFC Sockets

ThatsAlok14-May-05 0:00

ThatsAlok

14-May-05 0:00

HI Ram,
this Article demonstrate use of CAsyncSocket
http://www.funducode.com/freevc/socket/socket1/socket1.htm[^]

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta

Q: How to detect and remove unused resource strings?

rbid13-May-05 22:46

rbid

13-May-05 22:46

Hello,

Any hint on how to remove unused resource strings? One of my projects functionality has shrinked and now I got a lot of resource strings defined in the string tables but they are not used any more.

Do you have a tool/hint/macro/add-in that may help to detect and remove unused resource strings?

I also use this great tool: Resource ID Organizer Add-In for Visual C++ [^]

--- Ricky

-- Ricky Marek (AKA: rbid)
-- "Things are only impossible until they are not" --- Jean-Luc Picard

My articles

Re: Q: How to detect and remove unused resource strings?

Ravi Bhavnani14-May-05 4:12

Ravi Bhavnani

14-May-05 4:12

In VC6, do View | Resource Symbols and delete the unused ones.

/ravi

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Re: Q: How to detect and remove unused resource strings?

rbid15-May-05 8:00

rbid

15-May-05 8:00

True, This goes also for VC 7.* for unused Resource Symbols..

My question was not for Resource Symbols but Resource Strings.

Once you define a Resource String (Add an item on the String Table), it will appear as an used Resource Symbol even if you don't use the just defined Resource String on your code.

That is, I'm looking for a way to discover (and maybe delete) all the unused Resource Strings on the code.

Thanks in advance..

--- Ricky.
P.D. the underlined words above are for differentiating the words, not because I'm "shouting" or "angry". Roll eyes | :rolleyes:

-- Ricky Marek (AKA: rbid)
-- "Things are only impossible until they are not" --- Jean-Luc Picard

My articles

Re: Q: How to detect and remove unused resource strings?

Ravi Bhavnani15-May-05 8:03

Ravi Bhavnani

15-May-05 8:03

Ah. Sorry, I was hasty in replying! Blush | :O

/ravi

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Help !!

Sreekanth Muralidharan13-May-05 21:58

Sreekanth Muralidharan

13-May-05 21:58

Hi I have an application which opens a file multiple times. The series of operations are as follows:
1. Open File when an OPEN button is pressed.
2. Close file when a CLOSE button is pressed.
After the 2. operation is complete and 1. option is given the same file is opened again.
But at this point, the OPEN fails and the application freezes.

Sreekanth Muralidharan,
Corporate Systems Consultant [Embedded Systems],
INDIA

Re: Help !!

ThatsAlok13-May-05 23:38

ThatsAlok

13-May-05 23:38

If you open file Exclusivly and Doesn't free the Memory associated with FILE handle at close. when you again try to open that file, this type proplem always persist.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta

Re: Help !!

Anonymous15-May-05 17:10

Anonymous

15-May-05 17:10

Should closing the file do the job? Or else, is there any explicit API to free the memory associated with the file handle? Please help.

Re: Help !!

Sreekanth Muralidharan15-May-05 17:12

Sreekanth Muralidharan

15-May-05 17:12

Should closing the file do the job? Or else, is there any explicit API to free the memory associated with the file handle? Please help.

Sreekanth Muralidharan,
Corporate Systems Consultant [Embedded Systems],
INDIA

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