Re: Console printing - C / C++ / MFC Discussion Boards

Re: Why my "i" counter doesn't increases?

Ryan Binns14-Feb-06 21:55

14-Feb-06 21:55

I can't see anything in your code that would cause that problem. Are you sure the value of ColumnsNumber is what you expect?

Also, check to make sure your sizes in the dbffile.read() calls are correct - you might be encountering a memory smashing bug.

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Re: Why my "i" counter doesn't increases?

Malli_S14-Feb-06 22:04

Malli_S

14-Feb-06 22:04

You do one thing, replace the variable 'i' with something else. Because that might be clashing.

-Malli...!

Console printing

RichardS14-Feb-06 20:48

RichardS

14-Feb-06 20:48

Hi All,

How does one use cout to display hex characters?

For example a variable is set to 0x60, but when you call cout << var << endl; you get ' because that is 0x60 on the ASCII table.

regards,
Rich

"Programming today is a race between software engineers striving to build bigger and
better idiot-proof programs, and the Universe trying to produce bigger and better idiots.
So far the Universe is winning." -- Rich Cook

Re: Console printing

kakan14-Feb-06 21:16

kakan

14-Feb-06 21:16

The old fashion (C) way:

int i = 0x60;

printf("%02X", i); // prints "60"
printf("%04X", i); // prints "0060"

Re: Console printing

Malli_S14-Feb-06 22:08

Malli_S

14-Feb-06 22:08

Hi !
I put some sample code for your. You can make use of it, as per your need.

int n=20;
cout << "decimal: " << n << endl;

//--- Print hex with leading zeros
cout << "hex : ";
for (int i=2*sizeof(int) - 1; i>=0; i--)
{
cout << "0123456789ABCDEF"[((n >> i*4) & 0xF)];
cout << endl << endl;
}

-Malli...!

Re: Console printing

RichardS14-Feb-06 22:36

RichardS

14-Feb-06 22:36

Hi,

That is rather cute code!

Thanks,
Rich

"Programming today is a race between software engineers striving to build bigger and
better idiot-proof programs, and the Universe trying to produce bigger and better idiots.
So far the Universe is winning." -- Rich Cook

Re: Console printing

David Crow15-Feb-06 4:03

David Crow

15-Feb-06 4:03

Why not use:

cout << std::hex << var << endl;

"The greatest good you can do for another is not just to share your riches but to reveal to him his own." - Benjamin Disraeli

Re: Console printing

Dan McCormick15-Feb-06 4:45

Dan McCormick

15-Feb-06 4:45

I have to agree with David, why not stick to the iostream idioms to do the trick. Although if 'var' is defined as type 'char' then you'll need to be a little sneaky since the formatting specifier hex modifies the output base of int's but does not modify the formatting of char's.

<br />
<br />
#include <iostream.h><br />
#include <iomanip.h><br />
<br />
<br />
char var = 0x60;<br />
<br />
cout << hex << var << endl;    // output: `<br />
<br />
cout << hex << (int) var << endl;  // output: 60<br />
<br />
// want to guarantee a minimum width of 2 and padded with '0'?<br />
<br />
cout << hex << setw(2) << setfill('0') << (int) var << endl;<br />
<br />

Remember kids, we're trained professionals. Don't try this at home!

VC++ 6 connect to Access using ODBC

stny200014-Feb-06 20:37

stny2000

14-Feb-06 20:37

I want make SQL operation(Add, Modify, Delete records) to Access using ODBC.
I found many method to done(ADO, CRecordSet ), but which one is good for using ?

Can give me some suggestion about ODBC connect to Access in VC++ 6?

Thanks Smile | :)

Re: VC++ 6 connect to Access using ODBC

David Crow15-Feb-06 4:07

David Crow

15-Feb-06 4:07

One of the simplest methods is to create a DSN for your Access database. Then use ClassWizard to create a CRecordset-derived object. It will ask you which DSN to use. You can then select the tables and columns to use. See here for an example.

"The greatest good you can do for another is not just to share your riches but to reveal to him his own." - Benjamin Disraeli

Re: VC++ 6 connect to Access using ODBC

stny200016-Feb-06 19:47

stny2000

16-Feb-06 19:47

Can i directly using ODBC connection strings and write the database location (like C:\testing\testingdb.mdb) in the ODBC connection strings ?
Because DSN need setting it before using.

Thanks your reply.

Re: VC++ 6 connect to Access using ODBC

David Crow17-Feb-06 2:28

David Crow

17-Feb-06 2:28

Sure. That same article shows how to use a DSN-less connection.

"The greatest good you can do for another is not just to share your riches but to reveal to him his own." - Benjamin Disraeli

How to hook the Shell View Window

kil ramesh14-Feb-06 20:08

kil ramesh

14-Feb-06 20:08

I want to perform some action whenever folder selection occured.So, I want to catch the Shell View(List View) events.Plz send any material or code regarding this topic.

How to stop mouse hover notification

BicycleTheif14-Feb-06 19:55

BicycleTheif

14-Feb-06 19:55

Hi,

In my application i have two views say View1 and View2. When the data in the document changes each view is notified synchronously. But if i hover mouse over the view2 when the the data in document is changing and the notification is not yet sent a event is fired by mouse hover even though i have used CWaitCursor in document. I need to prevent this as its trying to access the old data when new data is loading.

Any help please..

Thanks in advance..

Nithya..

Network connection status checking

Tony Kurishunkal14-Feb-06 19:42

Tony Kurishunkal

14-Feb-06 19:42

Any one help me to solve this problem I used ISNetworkAlive to check my lan network connection status but it is not working. Also I used NetServerEnum it is also not working in some systems . Any one please sugest me an alternative method. any status chane message is there.

Re: Network connection status checking

David Crow15-Feb-06 4:09

David Crow

15-Feb-06 4:09

Aby Skaria wrote:
Any one please sugest me an alternative method.

See here.

"The greatest good you can do for another is not just to share your riches but to reveal to him his own." - Benjamin Disraeli

Re: Network connection status checking

ThatsAlok16-Feb-06 2:33

ThatsAlok

16-Feb-06 2:33

Aby Skaria wrote:
ny one please sugest me an alternative method. any status chane message is there.

http://support.microsoft.com/?id=321381[^]

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

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

Client Edge of Progress Bar?

Owner drawn14-Feb-06 19:38

Owner drawn

14-Feb-06 19:38

I have removed all extended styles and WS_BORDER style to get rid of the raised border around the progress.

But this doesn't seem to work. Can somebody help?

Owner drawn
Jesus Loves

Relational Database

moodsey21114-Feb-06 19:27

moodsey211

14-Feb-06 19:27

hello... I'm kinda new in using visual C++ in a relational database. I would just like to ask help if someone has a sample code for connecting updating and closing a database. An ADODC or a DAO will work fine with me. Thanks...

--------------------------------Life is simple, You just complicate things----------------------------

-- modified at 1:44 Wednesday 15th February, 2006

Re: Relational Database

Ashutosh_shashi14-Feb-06 19:33

Ashutosh_shashi

14-Feb-06 19:33

tell the adjectly how u want to connect..
Through ODBC , DAO or .. any other way..
Then i will send u a sample code for that

Ashutosh

Re: Relational Database

moodsey21114-Feb-06 19:43

moodsey211

14-Feb-06 19:43

I'm using ADODC. But you could send me an example for a DAO. I'm choosing from the two. And i'm a little bit confuse...

-----------------------------------Life is simple, You just Complicate Things-----------------------------

Re: Relational Database

Ashutosh_shashi14-Feb-06 22:11

Ashutosh_shashi

14-Feb-06 22:11

Sample Code for DAO-----> Try this--->

CString csQuery; -->à SQL Query
CsaoDatabase pUserDB = new CDaoDatabase();

//Open DataBase in Read Only Mode
m_pUserDB->Open(Path_of_Database,FALSE, TRUE, _T(""));

CDaoRecordset m_pDaoUserRS = new CDaoRecordset(m_pUserDB);
m_pDaoUserRS->Open(AFX_DAO_USE_DEFAULT_TYPE,csQuery,dbReadOnly);

COleVariant varValue;
m_pDaoUserRS->GetFieldValue("Field_Name_of_Database",varValue);

Ashutosh

Re: Relational Database

David Crow15-Feb-06 4:12

David Crow

15-Feb-06 4:12

moodsey211 wrote:
An ADODC...

Isn't that a VB thing?

Anyway, see here.

"The greatest good you can do for another is not just to share your riches but to reveal to him his own." - Benjamin Disraeli

memory leak!!!!!!

naguu14-Feb-06 18:39

naguu

14-Feb-06 18:39

In my code i have a situation like..

char * getmestring()
{
char *str = new char[20];
str = "myname";
return str; --> str not at all release..
}
int main()
{
char name = getmestring();
cout<<name<<endl;
if(name="" !="NULL)"
="" {
="" delete="" []="" name;="" --=""> this is causing the debug assertion failed..
}
}
can u give me some idea to remove leaks in that piece of code..

nagesh

-- modified at 0:40 Wednesday 15th February, 2006

Re: memory leak!!!!!!

namaskaaram14-Feb-06 18:42

namaskaaram

14-Feb-06 18:42

char *name = getmestring();

cheerz!

dont want,dont want thinking,climbing on head and jumping grass!
(venda venda ennu vicharikumbol thellayill keyaree chadunnoda pulle!)

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