C / C++ / MFC Discussion Boards

Re: getline()

David Crow30-Jul-07 4:45

David Crow

30-Jul-07 4:45

garfaoui wrote:
i didnt know that such a button exist... sorryyyyyyyyy

It's right next to the Post Message button.

garfaoui wrote:
what should i do kneeing at your foot? i apologise, it s not enough?

Sarcasm and apologies are not necessary. I was merely letting you know a way of increasing your chances of receiving help.

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: getline()

garfaoui30-Jul-07 4:56

garfaoui

30-Jul-07 4:56

DavidCrow wrote:
garfaoui wrote:
i didnt know that such a button exist... sorryyyyyyyyy

It's right next to the Post Message button.

I have been posting message since a week. I didn´t take time to look at every button... That´s all.

DavidCrow wrote:

Sarcasm and apologies are not necessary.

I thought that too, but a simple " Sigh | :sigh:

hum..." seemed not to be enough because you felt posting a new message...

However you didn´t "merely letting [me] know a way of increasing [my] chance of receiving help. "
I "paid" for each person who did that. You didn´t need to say "is it so hard to..." just give me the information. That´s all. There is no need of being haughty with me.

Re: getline()

David Crow30-Jul-07 5:18

David Crow

30-Jul-07 5:18

garfaoui wrote:
I thought that too, but a simple "hum..." seemed not to be enough because you felt posting a new message...

The word "hum" is meaningless when no context is provided.

garfaoui wrote:
However you didn´t "
merely letting [me] know a way of increasing [my] chance of receiving help.

Why would you expect to receive help when over half of your code snippet cannot be read? Format your code properly, and double-check your grammar, before committing your posts. You'll receive much more help as a result.

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: getline()

garfaoui30-Jul-07 5:25

garfaoui

30-Jul-07 5:25

I know that i did not post the message properly, i should have done a preview before sending it, there is no need to argue about this, i agree with you.
However this is a useless conversation, I will do a preview before posting a message that´s all...

internal working of Message Map in MFC ?

prashant pissey29-Jul-07 23:44

prashant pissey

29-Jul-07 23:44

Hi,

can any one tell me internal working of MFC MEssage Map's

thanks and regards
prashant

Re: internal working of Message Map in MFC ?

Randor 30-Jul-07 1:06

Randor

30-Jul-07 1:06

The MSDN paints a simple picture of whats happening behind the scenes here: http://msdn2.microsoft.com/en-us/library/ms644927.aspx[^]

Here is an older post where I explained some internal differences between the Message que when it comes to 'Sent' messages and 'Posted' messages: http://www.codeproject.com/script/comments/forums.asp?msg=2119151&forumid=1647&mode=all&userid=273597#xx2119151xx[^]

Hope it helps,
-Randor (David Delaune)

Re: internal working of Message Map in MFC ?

SandipG 30-Jul-07 1:19

SandipG

30-Jul-07 1:19

You interested in the Messagemap macros or the entire functioning of message maps??

Re: internal working of Message Map in MFC ?

prashant pissey30-Jul-07 2:03

prashant pissey

30-Jul-07 2:03

i need to know the overview Message Map Working

thanks and regards
prashant

Re: internal working of Message Map in MFC ?

Mark Salsbery30-Jul-07 6:26

Mark Salsbery

30-Jul-07 6:26

Another link:

Message Handling and Mapping[^]

Mark

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

Create a print function

Linus D29-Jul-07 22:24

Linus D

29-Jul-07 22:24

Hi!
I have a windows application and I want to print barcode with label printers.

My questions:
How do I access my printers (I have four)?
Is there a way to find the com ports that my printers a connected to?

I know this is a basic questions but there is allways a first time for everthing Wink | ;)

Thanks for the help!

Linus

Re: Create a print function

CPallini29-Jul-07 22:41

CPallini

29-Jul-07 22:41

Usually, Windows applications relies on the Common Dialog Library's Print Dialog Box to let user browse for the available printers.
see [^].
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.

Re: Create a print function

Linus D29-Jul-07 22:48

Linus D

29-Jul-07 22:48

Thanks, now I know where to start my search... Wink | ;)

Re: Create a print function

Hamid_RT31-Jul-07 21:13

Hamid_RT

31-Jul-07 21:13

Does StartDoc any help?

WhiteSky

please help me ineed this

p_29-Jul-07 21:38

29-Jul-07 21:38

hello
please help to solve this problem
when i coonect vc++ to mysql
and use this code to fetch data from mysql
mysql_query(myDB,"select password from login where user= \'" + user + "\'");
i = mysql_query(myDB,"select * from login");
res=mysql_store_result(myDB);
row = mysql_fetch_row(res);
MessageBox(row[0]);
but when i use debugger at this line row = mysql_fetch_row(res);
an unhandled exception myapp.exe(libmysql.dll) access violation appears in message box and when i click ok then in output window of vc++ following messages appears :
Loaded 'C:\WINDOWS\system32\kernel32.dll', no matching symbolic information found.
Loaded 'C:\DOGRA\company\libmySQL.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\user32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\gdi32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\advapi32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\rpcrt4.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\wsock32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\ws2_32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\msvcrt.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\ws2help.dll', no matching symbolic information found.
Loaded symbols for 'C:\WINDOWS\system32\MFC42D.DLL'
Loaded symbols for 'C:\WINDOWS\system32\MSVCRTD.DLL'
Loaded symbols for 'C:\WINDOWS\system32\MFCO42D.DLL'
Loaded 'C:\WINDOWS\system32\imm32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\lpk.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\usp10.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\comctl32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\uxtheme.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\version.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\MSCTFIME.IME', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\ole32.dll', no matching symbolic information found.
Warning: no listbox item selected.
Loaded 'C:\WINDOWS\system32\mswsock.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\dnsapi.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\winrnr.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\wldap32.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\rasadhlp.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\hnetcfg.dll', no matching symbolic information found.
Loaded 'C:\WINDOWS\system32\wshtcpip.dll', no matching symbolic information found.
First-chance exception in company.exe (LIBMYSQL.DLL): 0xC0000005: Access Violation.
The program 'C:\DOGRA\company\Debug\company.exe' has exited with code 0 (0x0).
now please help me to solve this problem

Re: please help me ineed this

Hans Dietrich29-Jul-07 22:52

Hans Dietrich

29-Jul-07 22:52

Please stop posting this question. You posted it once, that's enough.

Best wishes,
Hans

[CodeProject Forum Guidelines] [How To Ask A Question] [My Articles]

Re: please help me ineed this

p_29-Jul-07 22:55

29-Jul-07 22:55

sorry sir
but sir i dont got my solution

Re: please help me ineed this

Hans Dietrich29-Jul-07 23:01

Hans Dietrich

29-Jul-07 23:01

That's no excuse for acting like a whiney brat. If someone with experience sees your question, they will post an answer. If you post over and over, they will get annoyed, and might ignore your question. So be patient.

Best wishes,
Hans

[CodeProject Forum Guidelines] [How To Ask A Question] [My Articles]

Re: please help me ineed this

Jonathan [Darka]30-Jul-07 0:16

Jonathan [Darka]

30-Jul-07 0:16

We already did, he seems unwilling to debug or try anything to identify the problem.

The issue is not the NULL recordset, but a combination of dodgy error handling and a refusal to look into why he is getting NULL from the query.

Jonathan Wilkes
Darka[Xanya.net]

Re: please help me ineed this

Shouvik Das29-Jul-07 23:41

Shouvik Das

29-Jul-07 23:41

I think this is a reposting of your previous query. Is the earlier thread not providing you any solution. I think it is the same problem. Your recordset is not returned instead just NULL is there so you end up with an Access Violation Error.

Have you debugged the application after necessary changes were made to it?

There are only two kinds of people who are really fascinating-people who know absolutely everything, and people who know absolutely nothing.
Oscar Wilde (1854-1900)
Regards...
Shouvik

Re: please help me ineed this

Jonathan [Darka]30-Jul-07 0:11

Jonathan [Darka]

30-Jul-07 0:11

He's basically ignored everything we suggested in the original question.

I will not help anymore as he could find the problem in 2 seconds using the debugger.

regards,

Jonathan Wilkes
Darka[Xanya.net]

Re: please help me ineed this

Shouvik Das30-Jul-07 0:13

Shouvik Das

30-Jul-07 0:13

if that is the case I go with you. We are not dumb fools replying to people who are deaf.

There are only two kinds of people who are really fascinating-people who know absolutely everything, and people who know absolutely nothing.
Oscar Wilde (1854-1900)
Regards...
Shouvik

Re: please help me ineed this

Jonathan [Darka]30-Jul-07 0:13

Jonathan [Darka]

30-Jul-07 0:13

So did you try what we suggested in your original question ?

You really should learn how to use the debugger, this would take seconds to find.

I've already told you why it's crashing, try debugging it to see why you are getting no records back.

regards,

Jonathan Wilkes
Darka[Xanya.net]

Re: please help me ineed this

David Crow30-Jul-07 3:46

David Crow

30-Jul-07 3:46

This same "use the debugger" problem has plagued you since 3-July. You don't appear to be trying anything new. When a suggestion is made, it usually narrows the problem down a bit further each time.

When you call a function that returns a value, it would behoove you to check that value to make sure the function call succeeded. Proceeding regardless is just asking for trouble.

http://www.codeproject.com/script/comments/forums.asp?msg=2109077&forumid=1647&mode=all&userid=3075912#xx2109077xx[^]

http://www.codeproject.com/script/comments/forums.asp?msg=2136812&forumid=1647&mode=all&userid=3075912#xx2136812xx[^]

http://www.codeproject.com/script/comments/forums.asp?msg=2139256&forumid=1647&mode=all&userid=3075912#xx2139256xx[^]

http://www.codeproject.com/script/comments/forums.asp?msg=2141720&forumid=1647&mode=all&userid=3075912#xx2141720xx[^]

http://www.codeproject.com/script/comments/forums.asp?msg=2147363&forumid=1647&mode=all&userid=3075912#xx2147363xx[^]

http://www.codeproject.com/script/comments/forums.asp?msg=2157231&forumid=1647&mode=all&userid=3075912#xx2157231xx[^]

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

How this expression get's executed

hari prasad sathpadi29-Jul-07 21:03

hari prasad sathpadi

29-Jul-07 21:03

can any one explain the sequence steps how x value changes.
i.e expand the below expression for easy understanding

x=x++ + ++x + ++x + --x;
printf("%d",x);

y=x++ + ++x + ++x + --x;
printf("%d",x);
printf("%d",y);

I executed this exp in vc++ i got 1st exp values as x=14
and in second exp i got x=4 and y=13.

sorry i got y=13;

Re: How this expression get's executed

Matthew Faithfull29-Jul-07 21:17

Matthew Faithfull

29-Jul-07 21:17

The difference between y = 13 and x = 14 is because of the postfix operator on x, x++
This get evaluated after the result is assigned to y. Simplify the expresion to see what is happening.

x= 4;
x = x++;
x == 5;

x = 4;
y = x++;
x == 5;
y == 4;

4 is assigned to y before x is incremented.

Nothing is exactly what it seems but everything with seems can be unpicked.

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