whats wrong here? - C / C++ / MFC Discussion Boards

blink4me17-Feb-02 11:16

17-Feb-02 11:16

Hi,

I am currently learning VC++ and MFC. I use Visual Studio 6 Enterprise and Sams: Teach Yourself Visual C++ 6 in 21 Days. I was wondering if it was worth it to save money and buy a standalone VC++.Net. Would I have many things that could be usefull to me, and my big question: Do the looks of the apps that you create with .Net look like Office XP Automatically. Smile | :)

// JS Paquet
cout << "Thank you all" << endl;

Re: Your op. about .Net

Christian Graus17-Feb-02 12:22

Christian Graus

17-Feb-02 12:22

No, to do that you need to get a library like the Xtreme Toolkit ( www,codejock.com ).

The good news is it works with VC6 and is a LOT cheaper than .NET Smile | :)

Christian

I have come to clean zee pooollll. - Michael Martin Dec 30, 2001

Picture the daffodil. And while you do that, I'll be over here going through your stuff.

So what does the .NET Framework do???

Nnamdi Onyeyiri17-Feb-02 10:36

Nnamdi Onyeyiri

17-Feb-02 10:36

i have just installed the .net framework on my PC. I had expected it to add a project type, or controls, or something, but as yet i cannot see what the installation has done other than take up my harddrive space.

Can someone enlighten me please?

==================================================
When Your Mind Wonders...Where Does It Go???

Re: So what does the .NET Framework do???

moliate17-Feb-02 11:51

moliate

17-Feb-02 11:51

Is that the free download SDK? That one is commandline only.

/moliate

Re: So what does the .NET Framework do???

Simon Walton17-Feb-02 12:11

Simon Walton

17-Feb-02 12:11

Unless me means the runtime libraries...

Simon
"The more I learn, the more I realize I don't know" - Colin Davies
Sonork ID 100.10024

Re: So what does the .NET Framework do???

Tim Smith17-Feb-02 13:07

Tim Smith

17-Feb-02 13:07

Framework is just the redistributable.
The SDK has your basic tools.

Tim Smith

I know what you're thinking punk, you're thinking did he spell check this document? Well, to tell you the truth I kinda forgot myself in all this excitement. But being this here's CodeProject, the most powerful forums in the world and would blow your head clean off, you've got to ask yourself one question, Do I feel lucky? Well do ya punk?

Re: So what does the .NET Framework do???

Nish Nishant17-Feb-02 13:44

Nish Nishant

17-Feb-02 13:44

It installs all required stuff to build and run .NET code.
You now have command line compilers for MC++., C# and VB. NET

Nish

Nish was here, now Nish has gone;
He left his soul, to turn you on;
Those who knew Nish, knew him well;
Those who didn't, can go to hell.

I like to Jig | [Dance]

on the Code Project

Sonork ID 100.9786 voidmain
www.busterboy.org

whats wrong here?

Steve L.17-Feb-02 8:54

Steve L.

17-Feb-02 8:54

Ive gotten this much. Its a dialog app, I dont know if that matters.

void CCursorCreatorDlg::OnFileSave() 
{
	CFileDialog fileDlg(FALSE, NULL, "Untitled",
		OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
		"Some Files(*.fil)|*.fil||",
		NULL );
	fileDlg.m_ofn.lpstrDefExt = "cur";
	if( fileDlg.DoModal()==IDOK )
	{
		CString fileName;
		fileName = fileDlg.GetPathName();
	
		CFile file( fileName, CFile::modeReadWrite | CFile::modeCreate );
		CArchive ar( &file, CArchive::store );
		Serialize( ar );
	}
}

void CCursorCreatorDlg::OnFileOpen() 
{
	CFileDialog fileDlg(TRUE, NULL, NULL,
		OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
		"Some Files(*.fil)|*.fil||",
		NULL );
	if( fileDlg.DoModal()==IDOK )
	{
		CString fileName;
		fileName = fileDlg.GetPathName();

		CFile file(fileName, CFile::modeReadWrite | CFile::modeCreate );
		CArchive ar( &file, CArchive::load );
		Serialize( ar );
	}
}

void CCursorCreatorDlg::Serialize(CArchive& ar) 
{

	if (ar.IsStoring())
	{	// storing code
		ar << someVariable;
	}
	else
	{	// loading code
		ar >> someVariable; 
	}
}

I have the DECLARE_SERIAL and IMPLEMENT_SERIAL macros where they should be.
When I save, it seems to work fine. However, when I open, it works until it gets to the serialize function where a messagebox pops up and says "An attempt was made to access an unnamed file past its end." What's that mean and how do I fix it?

-Raffi
The truth about C++

Re: whats wrong here?

Kashif Manzoor17-Feb-02 9:01

Kashif Manzoor

17-Feb-02 9:01

Rafi,

This error occurs for two reasons:

(1) if you are sacing the file differently than loading it e.g.:
if (ar.IsStoring())
{ // storing code
ar << someVariable;
}
else
{
// loading code, is trying to read a variable that was not saved.
// So obviously you are trying to read past the file and
ar >> someVariable>>anotherVariable;
}

(2) if you are readin/loading a file that was saved by some other program then there is a strong chance that such an error will occurr (again this is related to reason (1)

(3) If you save the data using Serialize(&ar), and load/read the data using ar>> operator then you will again get the mentioned error.

I think your problem is related to category (1). Make sure you are reading exactly the same (and also in the same order) that you wrote.

Normally I simply copy the saving code in the loading block and simply change the << to >>, to avoid any mistake.

-cheers,
kashif manzoor

peace to all

Re: whats wrong here?

Dominik Reichl17-Feb-02 9:27

Dominik Reichl

17-Feb-02 9:27

I am not sure, but in the file open function

void CCursorCreatorDlg::OnFileOpen()

you open the files with the parameters

CFile::modeReadWrite | CFile::modeCreate.

I think, the CFile::modeCreate is wrong in this case, because you want to read the file, and the modeCreate flag resets the file length to 0.
Remove the modeCreate and try again Smile | :)

-Dominik

Re: whats wrong here?

Steve L.17-Feb-02 9:39

Steve L.

17-Feb-02 9:39

it worked! thaks alot Smile | :)

-Raffi
The truth about C++

How can one make a pointer to a constant?

17-Feb-02 8:34

I need to make a pointer to a constant memory address, but something like this doesn't work:

int *address = &656623;

VC++ Compiler returns:

error C2101: '&' on constant

I know it is possible, but I don't have a clue how to do it... Probably there is a function of some sort that solves this problem, but I couldn't find it.

Thanks in advance

Re: How can one make a pointer to a constant?

Joaquín M López Muñoz17-Feb-02 8:46

Joaquín M López Muñoz

17-Feb-02 8:46

It'd be something like

int * address=(int *)656623;

But you must know very well what you're doing in order to manage such a pointer safely.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: How can one make a pointer to a constant?

17-Feb-02 8:52

Great!

That did the job perfectly. And it's the problem of the user if he changes wrong values...

How to menu click ?

pramod kumar17-Feb-02 4:40

pramod kumar

17-Feb-02 4:40

How SendMessge for a particular menu click
i.e I want the the menu click on a button click

Re: How to menu click ?

Michael Dunn17-Feb-02 8:28

Michael Dunn

17-Feb-02 8:28

SendMessage ( hMainWindow, WM_COMMAND, IDC_THE_COMMAND, 0 );

--Mike--
Fetchez la vache!
My really out-of-date homepage
Sonork - 100.10414 AcidHelm
Big fan of Alyson Hannigan.

new SaveAs IE dialog buttons (the ones on the left)

17-Feb-02 3:41

I'm wondering which class use this control:

http://digilander.iol.it/ilbanca/fuffa/saveasie.jpg

Any help will be appreciated,
Bye.

Re: new SaveAs IE dialog buttons (the ones on the left)

Tim Smith17-Feb-02 3:52

Tim Smith

17-Feb-02 3:52

It is probably what is normally refered to as the "Outlook shortcut bar"

Tim Smith
Descartes Systems Sciences, Inc.

Re: new SaveAs IE dialog buttons (the ones on the left)

17-Feb-02 4:18

Thanks, this helped me much.

And it's not a so new control as I supposed Smile | :)

Re: new SaveAs IE dialog buttons (the ones on the left)

Simon Walton17-Feb-02 4:29

Simon Walton

17-Feb-02 4:29

You could create something like that from scratch pretty easily actually. Just a standard formview (coloUred with OnCtlColor()), with some custom-drawn flat style buttons added at runtime. Somebody has probably already done it though, so take a look around CP and related sites.

Simon
"The more I learn, the more I realize I don't know" - Colin Davies
Sonork ID 100.10024

Re: new SaveAs IE dialog buttons (the ones on the left)

Lockhart17-Feb-02 7:10

Lockhart

17-Feb-02 7:10

Mmm... I'll give a try, thank you for the advice.

Re: new SaveAs IE dialog buttons (the ones on the left)

Simon Walton17-Feb-02 9:30

Simon Walton

17-Feb-02 9:30

NP. Take a look here for a good button set class. It's a bit overkill for one style though. You'll something like;

CCustomButton::OnDraw()
{
   if(bHover)
       draw_with_border()
   else
       draw_without_border()
}

Just use a TRACKMOUSEEVENT structure to determine if the cursor is hovering, and change bHover appropriately.

Simon
"The more I learn, the more I realize I don't know" - Colin Davies
Sonork ID 100.10024

Re: new SaveAs IE dialog buttons (the ones on the left)

Lockhart17-Feb-02 11:21

Lockhart

17-Feb-02 11:21

, CButtonST is too much complex for me, I'll try to work on your idea instead, sounds quite easy to implement, thanks again.

Re: new SaveAs IE dialog buttons (the ones on the left)

Michael Dunn17-Feb-02 8:30

Michael Dunn

17-Feb-02 8:30

That's not a common control, it's a new feature of the Open/Save As dialog introduced in 2K.

--Mike--
Fetchez la vache!
My really out-of-date homepage
Sonork - 100.10414 AcidHelm
Big fan of Alyson Hannigan.

Re: new SaveAs IE dialog buttons (the ones on the left)

Lockhart17-Feb-02 11:24

Lockhart

17-Feb-02 11:24

I notice that several apps do use of that, the download manager Reget Deluxe also uses it. It's very similiar to a large toolbar vertically aligned...

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