CS Data Struct - C / C++ / MFC Discussion Boards

henryh5-Dec-14 10:39

5-Dec-14 10:39

Hi Guys,

Thanks for the information. The information I want to attach to a file are details as in the following:
File description:
Type:
File version:
Product name:
...

As I have a hex record file (text format), I want to know what File version so I can decide to use it or not, says for programming a device.

I can use FileVersionInfo to read these info, but I don't know to set them to a text file. I guess the text file does not have these properties.

Thanks,
Henry

henryh

Re: add file version to a new text file

Richard MacCutchan5-Dec-14 11:52

Richard MacCutchan

5-Dec-14 11:52

If the file content is hex records (whatever that means) then it is not text. Why not just add the information as a header record at the beginning of the file?

Re: add file version to a new text file

David Crow8-Dec-14 3:49

David Crow

8-Dec-14 3:49

To my knowledge, text files do not meta data, which is where you would store things like company name, author, version, etc. For text files, the file system keeps track of simple things like date, time, and attributes.

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Printing with a CString

Gagnon Claude5-Dec-14 3:31

Gagnon Claude

5-Dec-14 3:31

Hi,

I print a CString with pDC->TextOut().

That is working.

But if I print again, the sheet is blank.

How to correct that?

Do I have to utilize GetBuffer(), etc?

Thanks,

Claude

Re: Printing with a CString

jeron15-Dec-14 3:59

jeron1

5-Dec-14 3:59

Just a guess, could you be overwriting the first print? Do you have a new line character (or carraige return and line feed) at the end?

"the debugger doesn't tell me anything because this code compiles just fine" - random QA comment

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Re: Printing with a CString

Richard MacCutchan5-Dec-14 4:05

Richard MacCutchan

5-Dec-14 4:05

Print what, where ... ?
Please provide some proper context and detail about what your program is doing.

[edit]
Have you checked http://msdn.microsoft.com/en-us/library/yzabsdzx.aspx[^]?
[/edit]

Re: Printing with a CString

Randor 5-Dec-14 6:14

Randor

5-Dec-14 6:14

Hi,

Your not really 'printing' but rather painting text using GDI if your utilizing the TextOut function[^].

Sounds like the wm_erasebkgnd handler (or conversely WM_PAINT if you are painting in the erase handler)is overwriting what you painted. You should share some code.

Also recommend reading all of this:

Painting and Drawing[^]

Best Wishes,
-David Delaune

CS Data Struct

Member 112872284-Dec-14 12:46

Member 11287228

4-Dec-14 12:46

We are storing a list of student info, (id number, First name and Last name) using a link list. The ID is the key field. Your program should implement a linked list using arrays. Your program should process the following operations.
1) Add an item to the linked list ex. 1 254 John Smith
2) Print the linked list in logical order ex. 2
3) Print the physical order of the linked list including list, avail and next. ex. 3
4) Print a count of how many items are in the linked list. ex. 4
Bonus (you must get 1-4 working before attempting 5) 5) Delete an item from the linked list ex. 5 254
I started it off as so

C++

#include<iostream>
using namespace std;
struct studenttype

modified 5-Dec-14 3:28am.

Re: CS Data Struct

Richard MacCutchan4-Dec-14 21:27

Richard MacCutchan

4-Dec-14 21:27

Member 11287228 wrote:
Your program

That means you are expected to write it.

Re: CS Data Struct

CPallini4-Dec-14 21:46

CPallini

4-Dec-14 21:46

Quote:
I started it off as so
#include<iostream>
using namespace std;
struct studenttype

Well, it looks promising.

THESE PEOPLE REALLY BOTHER ME!! How can they know what you should do without knowing what you want done?!?!
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MFC app - "Encountered an improper argument"

Member 112858094-Dec-14 1:08

Member 11285809

4-Dec-14 1:08

Hi,
I "inherited" an legacy app written some 12 years ago, not being C++ developer since university.
I have MS Visual Studio 2010 project out of it, all builds OK. All even runs OK on Windows XP 32 bit(where it's built),
but when trying it on Windows 2008 server 64bit, it throws "Encountered an improper argument".

More specifically, it's super simple app that displays 2 password fields (second for confirmation), and button for storing generated file on file system (so Save as... dialog). And error shows up when clicking on this button/trying to open Save dialog).
When run in debug mode, in same action, it throws Assertion error, pointing to dlgfile.cpp in MFC libs, line 479.

The executable is generated with VS settings Multi-threaded Debug DLL as runtime library, and "Use MFC as shared DLL"

I would presume that some .dll provided is incorrect version from rest/expected by code, but I have no clue how to find it.
Any help on how to fix this is strongly welcomed!

Re: MFC app - "Encountered an improper argument"

Richard MacCutchan4-Dec-14 2:04

Richard MacCutchan

4-Dec-14 2:04

You first need to work back to the part of the code that calls into this DLL. Only then can you look at the calling method and parameters to see which might cause the problem.

Re: MFC app - "Encountered an improper argument"

Member 112858094-Dec-14 2:09

Member 11285809

4-Dec-14 2:09

C++

BOOL CPasswordGeneratorWriterDlg::SavePasswordFile()
{
	// Create an instance  
	CFileDialog fileDlg( 
		FALSE, 
		NULL, 
		NULL, 
		OFN_ALLOWMULTISELECT | OFN_HIDEREADONLY, 
		"All Files (*.*)|*.*||", 
		NULL);

	// Initializes m_ofn structure 
	fileDlg.m_ofn.lpstrTitle = "Save file as...";

	// Call DoModal
	if(fileDlg.DoModal() == IDOK)
	{
		CString szlstfile = fileDlg.GetPathName(); // This is your selected file name with path
		//AfxMessageBox("Your file name is :" +szlstfile );

		return SavePasswordFileAs(szlstfile);
	}
    return FALSE;
}

Re: MFC app - "Encountered an improper argument"

Richard MacCutchan4-Dec-14 2:39

Richard MacCutchan

4-Dec-14 2:39

See the Remarks section at http://msdn.microsoft.com/en-us/library/wh5hz49d.aspx[^].

Re: MFC app - "Encountered an improper argument"

Member 112858094-Dec-14 3:06

Member 11285809

4-Dec-14 3:06

Thank you,
I amended dwFlags to "OFN_ENABLESIZING | OFN_HIDEREADONLY", which even make more sense (having multiselect on saving a file dialog doesn't make much sense) and it works on both XP and 2008 server.

GroupBox ScrollBar Is not working

Member 108664273-Dec-14 22:59

Member 10866427

3-Dec-14 22:59

hi
My groupbox is not working , when i click on up-down arrow , nothing is happening ,
Thanks in Advance for help

Re: GroupBox ScrollBar Is not working

Richard MacCutchan3-Dec-14 23:23

Richard MacCutchan

3-Dec-14 23:23

Member 10866427 wrote:
My groupbox is not working

That is hardly a technical description of a problem. If you want help with somerthing then you need to provide proper details.

Re: GroupBox ScrollBar Is not working

Randor 5-Dec-14 6:31

Randor

5-Dec-14 6:31

Hi,

MFC/Win32 is nothing like VB... you cannot just drop a scrollbar on a dialog/control/window and expect it to scroll the window for you. You need to do all of this yourself. You will need to have the parent window that owns the scrollbar handle the WM_VSCROLL message. You will then need to scroll the window yourself.

WM_VSCROLL message[^]
CWnd::OnVScroll[^]
ScrollWindow function[^]
Using Scroll Bars[^]

Best Wishes,
-David Delaune

External program used excel, if you click on the click of a button to send a message through the simulation, excel this call can not be started.

Member 112832723-Dec-14 4:04

Member 11283272

3-Dec-14 4:04

External program used excel, if you click on the click of a button to send a message through the simulation, excel this call can not be started.
If my program is A.exe I need to simulate an external program control after clicking B.exe this B.exe a button click can not call excel

Case 1: B.exe manually click a button in excel can be a normal call! --OK!
Case 2: using the SendMessage function to send a message with A.exe analog control click on the button in excel B.exe call fails, and pop-up "can not start Excel server!"! --NG!
Messages sent using SendMessage is successfully sent, message "Unable to start Excel server!"! Also shows that the message was sent successfully, but it is not up calls excel!

Question: permissions problem? Or anything else that needs to feed?

Re: External program used excel, if you click on the click of a button to send a message through the simulation, excel this call can not be started.

Member 112832723-Dec-14 16:37

Member 11283272

3-Dec-14 16:37

why?

Re: External program used excel, if you click on the click of a button to send a message through the simulation, excel this call can not be started.

Richard MacCutchan3-Dec-14 20:50

Richard MacCutchan

3-Dec-14 20:50