Re: Formatting question - using variables instead of a number - C / C++ / MFC Discussion Boards

Bob X25-Apr-05 7:39

25-Apr-05 7:39

yeetins wrote:
fatal error:can't find the file "streams.h".

You could need a library called "streams.h" It may or may not have come with the download, and not have been installed in the proper library file.

Re: Why can't find the file "streams.h"

yeetins25-Apr-05 20:32

yeetins

25-Apr-05 20:32

Yes,I think so.

But where can I find it?After I install DirectX 9.0c SDK,the compiler still can't find it.

Re: Why can't find the file "streams.h"

Bob X26-Apr-05 7:18

Bob X

26-Apr-05 7:18

yeetins wrote:
But where can I find it?After I install DirectX 9.0c SDK,the compiler still can't find it.

-If your problem is a library that has been misplaced by the computer, you can find it using the find under the start menu, and manually move the library to the correct folder.
-Your download may not have included the library and you need to find it on the net.

Re: Why can't find the file "streams.h"

Ryan Binns25-Apr-05 18:55

Ryan Binns

25-Apr-05 18:55

AFAIR, this is a common header file that all the DirectShow samples use. The header is in a common include folder somewhere in the sample heirarchy. Set the include path appropriately so the compiler can find the file.

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 can't find the file "streams.h"

yeetins25-Apr-05 20:42

yeetins

25-Apr-05 20:42

I am so confused now.There isn't DirectShow samples and DirectShow folder in the SDK I installed in my computer.My computer doesn't have this header file,so ......!

Formatting question - using variables instead of a number

hithesh25-Apr-05 6:42

hithesh

25-Apr-05 6:42

Hi guys,

I am trying to format the output of a floating point. The number of digits after the decimal point is decided by the user.
I tried the usual method - prompt the user to enter accuracy--store it in a integer variable called 'accy' and use it while displaying -

m_display.Format("% 0.accyf" , output);

The program doesn't give any error while compiling, but when I run it, an error window pops up saying error in line 613, "abort", "cancel" , "retry".
Anyway around this?

-hithesh

Re: Formatting question - using variables instead of a number

Maximilien25-Apr-05 7:03

Maximilien

25-Apr-05 7:03

format your format string manually ...

something like :

CString sFormatString;
sFormatString.Format ( "% 0.%i", accyf );
m_display.Format(sFormatString , output)

Maximilien Lincourt
Your Head A Splode - Strong Bad

Re: Formatting question - using variables instead of a number

David Crow25-Apr-05 7:18

David Crow

25-Apr-05 7:18

Use:

m_display.Format("%0.*f", accy, output);

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

Re: Formatting question - using variables instead of a number

hithesh25-Apr-05 15:05

hithesh

25-Apr-05 15:05

Thanks david. That worked.

-hithesh

How to Implement the backspace function

hithesh25-Apr-05 6:33

hithesh

25-Apr-05 6:33

Hi guys,

I am trying to implement the backspace function. The last element of the Cstring should be deleted when the backspace button is pressed.

The data is entered by the used in a text display box.

Thanks in advance.

-hithesh

Re: How to Implement the backspace function

Blake Miller25-Apr-05 7:06

Blake Miller

25-Apr-05 7:06

1. Code to trim rightmost character form CString.

<br />
   CString csTemp;<br />
   int iLength;<br />
   <br />
   iLength = csTemp.GetLength();<br />
   if( iLength > 1 ){<br />
     csTemp = csTemp.Left(iLength - 1);<br />
   }<br />

2. Edit field should be handling the backspace keypress already.

Re: How to Implement the backspace function

Ravi Bhavnani25-Apr-05 7:20

Ravi Bhavnani

25-Apr-05 7:20

I think you meant if (iLength > 0)... Smile | :)

/ravi

My new year's resolution: 2048 x 1536
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Re: How to Implement the backspace function

hithesh25-Apr-05 7:20

hithesh

25-Apr-05 7:20

Thanks Blake. you saved me a lot of time.

-hithesh

Re: How to Implement the backspace function

Michael Dunn25-Apr-05 9:36

Michael Dunn

25-Apr-05 9:36

Removing just the last TCHAR will break if the string ends in a DBCS character. You need to call CharPrev() to move back one "character" from the end (whether it's 1 or 2 bytes).

--Mike--
Visual C++ MVP Cool | :cool:

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Re: How to Implement the backspace function

Blake Miller26-Apr-05 13:19

Blake Miller

26-Apr-05 13:19

And I actually know better, thanks for the correction Blush | :O

I am oms , i am interested in C#

OMSSD8425-Apr-05 6:25

OMSSD84

25-Apr-05 6:25

I hope i will be your partners Big Grin | :-D

Re: I am oms , i am interested in C#

ThatsAlok25-Apr-05 19:39

ThatsAlok

25-Apr-05 19:39

Me Not!

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

cheers,
Alok Gupta

Reading from a Text File & Database

ugur_basak25-Apr-05 5:55

ugur_basak

25-Apr-05 5:55

i am reading some text from the selected file, then when i push a button i want to insert some data to database (ADO), but cant do. There is an error occured.

i tested : when i dont read data from a file, i can use data functions well.

I even close CStdioFile and delete its pointer.
Can anybody help?

Re: Reading from a Text File & Database

David Crow25-Apr-05 7:20

David Crow

25-Apr-05 7:20

ugur_basak wrote:
There is an error occured.

I give up. What's the error?

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

Re: Reading from a Text File & Database

PJ Arends25-Apr-05 18:28

PJ Arends

25-Apr-05 18:28

Oh come on David Roll eyes | :rolleyes:

Use your ESP, or lacking that, take a wild guess. You may just hit upon the correct solution.

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

Within you lies the power for good - Use it!

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Re: Reading from a Text File & Database

ugur_basak25-Apr-05 20:31

ugur_basak

25-Apr-05 20:31

the error:

Runtime Error!

Program:..... .exe

This application has requested the Runtime to terminate it in an unusual way. Please contact the application's support team for more information.

---
the error is about this sentence.

pConnectRead->Open(commandString, connectionString, adOpenStatic, adLockReadOnly, adCmdText);

can this be helpfull to GUESS the solution. Frown | :(

Re: Reading from a Text File & Database

ThatsAlok25-Apr-05 21:47

ThatsAlok

25-Apr-05 21:47

ugur_basak wrote:
Runtime Error!

Program:..... .exe

Usually this type of error occur due to IMproper/unreferenced Memory allocation.

ugur_basak wrote:
pConnectRead->Open(commandString, connectionString, adOpenStatic, adLockReadOnly, adCmdText);

have you checked that is pConnectRead hold valid memory or any of it args!

"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: Reading from a Text File & Database

ugur_basak26-Apr-05 2:48

ugur_basak

26-Apr-05 2:48

CFileDialog fileDlg(TRUE, NULL, NULL, OFN_HIDEREADONLY | OFN_PATHMUSTEXIST, NULL, this);

if(fileDlg.DoModal()==IDOK)
{
sSelectedFile = fileDlg.GetPathName();
}

I guess the problem is about the above code, when i use this dialog window the error happens. But if i use the files path name by editing the editbox there is no error.
But still cannot use this dialog

Re: Reading from a Text File & Database

ugur_basak26-Apr-05 3:14

ugur_basak

26-Apr-05 3:14

At the end i find the solution. its about an ugly problem. When we use CFileDialog without OFN_NOCHANGEDIR, it doesnt release some of the handles, and system crashes...

dlg = new CFileDialog(FALSE, NULL, NULL, OFN_HIDEREADONLY | OFN_NOCHANGEDIR);

this solves everything...

AcitveX container hanging problem

kostik125-Apr-05 5:16

kostik1

25-Apr-05 5:16

I need some help in codding ActiveX container. Short description : Microsoft Visual Studio 2003 and other vsersion (6,7) , includes sample TstCon - a sample of ActiveX Container. When I place control and than delete it or open new document, this program hang up every time when i close it.
I modified ContainerItem method OnDelete()... after pItem->Delete() i put delete(pItem); its all works under win2k... but... in 98SE,XP after deleting control, when i try to insert new control an error occured "Failed to connect.Link may be broken". Sigh | :sigh:

So does any one knows how to solve this, and force it to work correctly. Confused | :confused:

Thanks.

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