How to save a binary resource file to disk - C / C++ / MFC Discussion Boards

Steen Krogsgaard23-Oct-01 4:17

23-Oct-01 4:17

Ah, I see. There's 355 megs so you'd be screwed. Why is the transfer rate so slow? Maybe you should try Download Accelerator to see if it can speed things up. On my modem (56K) it doesn't really help because the modem is setting the limit (app. 6 Kb/s), but maybe your problem is different.

Cheers
Steen.

"To claim that computer games influence children is rediculous. If Pacman had influenced children born in the 80'ies we would see a lot of youngsters running around in dark rooms eating pills while listening to monotonous music"

Saving CString to text file

23-Oct-01 0:09

Hi,

How can I save a CString to a text file?

I've tried CFile::Write to write the CString for CString.GetLength(),
and although this saves the file, there are usually around 3 garbage characters at the end of the file.

Any ideas?

Many thanks.

Re: Saving CString to text file

Christian Graus23-Oct-01 0:40

Christian Graus

23-Oct-01 0:40

The following works perfectly for me, with no extra characters.

file.Write(string.GetBuffer(string.GetLength()), string.GetLength);
string.ReleaseBuffer();

Were you calling GetBuffer, or just passing in the CString ?\

Christian

As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet.

Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery.

Re: Saving CString to text file

Alvaro Mendez23-Oct-01 8:55

Alvaro Mendez

23-Oct-01 8:55

Christian, this will work too and it's actually a little quicker:

file.Write((LPVOID)(LPCTSTR)string, string.GetLength());

Regards,
Alvaro

Re: Saving CString to text file

23-Oct-01 10:06

Thanks, but I'm afraid that made no difference. I'm using this code:

void CTestDlg::WriteFile(CString strFile, CString strText)
{
	CStdioFile file;
	if (!file.Open(strFile, CFile::modeCreate | CFile::modeWrite | CFile::typeText))
	{
//		AfxMessageBox("Error - Couldn't save file.", MB_ICONSTOP | MB_SYSTEMMODAL);
		return;
	}

	file.Write(strText.GetBuffer(strText.GetLength()), strText.GetLength());

	strText.ReleaseBuffer();

	file.Close();
}

>
<ë é

Happens with any string, on three different computers, Win98 and Win2k, although the last 7 (\n and \r) characters (the garbage) are always random.

Thanks.

Re: Saving CString to text file

Andrew Peace23-Oct-01 13:10

Andrew Peace

23-Oct-01 13:10

Try getting rid of CStdioFile and replacing with CFile. The, when you're writing to the CString make sure you use \r\n where you'd normally use \n. Also, use Alvaro's with GetBuffer - it's easier and the copied buffer is un-needed.

--
Andrew.

Re: Saving CString to text file

23-Oct-01 5:12

If u use Struct for storing the file ,u will see the garbage actually it store the data in binary format and if i user open the file in text mode and it looks like garbage when u read from the file the garbage shows u the actual data.
World of Life

How to save a binary resource file to disk

Xenion23-Oct-01 0:06

Xenion

23-Oct-01 0:06

Is there anyone who could tell me how to save a custom binary resource item as a binary file to disk? I want to include some data in my final exe which should be written to disk when the program first runs (sort of sfx). TIA.

Re: How to save a binary resource file to disk

Christian Graus23-Oct-01 0:45

Christian Graus

23-Oct-01 0:45

If you have a pointer to the item, CFile allows you to write a chunk of data by specifying the start address and length - see my exmaple to the question above this one, it works just as well for any pointer you want to pass it.

Christian

As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet.

Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery.

textcolor

22-Oct-01 23:46

i downloaded an old cpp program and it uses something like textcolor fn.
but my cpp help doesnt know it at all.
what do i have to include ? or where do i find it?

Re: textcolor

Christian Graus22-Oct-01 23:51

Christian Graus

22-Oct-01 23:51

Is it a console program ? I believe some other compilers had stuff for this sort of thing, from memory someone else asked about it. It's certainly not a standard function under Visual C++. If you can explain exactly what it needs to do ( i.e. is it in a window or a console, is it just setting the colour for a block of text, etc. ), I'm sure we can help more.

Christian

As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet.

Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery.

Re: textcolor

24-Oct-01 3:25

this is a sample of the program:
(it is i think a dos prog)

void background(void){
int a;
clrscr();
for(a=1;a<2000;a++){
textcolor(1);
textbackground(7);
cprintf("°");
}
gotoxy(1,25);
for(a=1;a<80;a++){
textbackground(7);
cprintf(" ");
}
}

XP will change my user interface?

Joan M22-Oct-01 23:36

Joan M

22-Oct-01 23:36

Hello, I would like to know if choosing "mfc as a shared DLL", the interface of my programs will be like the new interface of windows XP.

Thank you in advance.

Re: XP will change my user interface?

Christian Graus22-Oct-01 23:48

Christian Graus

22-Oct-01 23:48

It will make no difference whatsoever - you will still link to the same dll if it's static or dynamic. All apps under Window XP look different ( I am using it ) because of how it shows things like the system menu ( the buttons on the top right of a window ), the window frame itself, etc. Every app I have written, static or dynamic, all look the same under XP, they all have the XP look and feel about them.

Apps will look like they are under XP if they are under XP or if you hack the absolute hell out of them to try and make them look similar. Otherwise, they will look like other apps under the version of Windows you are running. Also, if you want to write using newer features of Windows that require later versions of the OS, you'll need to get the Platform SDK from the Microsoft site ( download at your peril, I always get the CD ). Note that using functions like TransparentBlt will render your code inoperable under earlier versions unless you late load the dll's required and do some checking of your OS version to ensure that functionality not supported by the OS is not offered to the user.

Christian

As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet.

Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery.

Re: XP will change my user interface?

Ashman22-Oct-01 23:48

Ashman

22-Oct-01 23:48

Explain what you mean?
Do you mean keep the interface that XP has when running your app in another OS?

Re: XP will change my user interface?

Tomasz Sowinski23-Oct-01 2:35

Tomasz Sowinski

23-Oct-01 2:35

You have to create so-called 'manifest file' to enable XP user interface. You can find details at http://msdn.microsoft.com/library/default.asp?URL=/library/techart/XPTheming.htm

Tomasz Sowinski -- http://www.shooltz.com

System tray icons not showing in XP or 2k

Ashman22-Oct-01 23:35

Ashman

22-Oct-01 23:35

I have programmed a system tray icon into my program using traynot.cpp and traynot.h.
When I run the program, it works fine and then I press minimise and a grey space comes up.

I know its all correct because I tried it in Windows 98 and the system tray icon shows up!
Anyone know what I can do?

Thanks
Ashman

When press Enter Key

22-Oct-01 22:29

Hello
I do a program with vc++ that based on dialog, but the problem When I press Enter key the program is closed, How can avoide this problem.

thanks for your help Wink | ;)

Re: When press Enter Key

Jonas Larsson22-Oct-01 22:33

Jonas Larsson

22-Oct-01 22:33

In your dialog class override CDialog::OnOK() and dont call CDialog::OnOK() in it.
The same goes for Esc, override CDialog::OnCancel() in your dialog class.

Re: When press Enter Key

Cris23-Oct-01 2:34

Cris

23-Oct-01 2:34

The same thing should be done when using CTabCtrl.

[]'s Cris

Re: When press Enter Key

Michael Dunn22-Oct-01 22:35

Michael Dunn

22-Oct-01 22:35

See the VC forum FAQ.

--Mike--
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your

with

and

Destroying COleSafeArray ...

Hadi Rezaee22-Oct-01 18:41

Hadi Rezaee

22-Oct-01 18:41

Hi all,
I created array with COleSafeArray ...
Now, i don't know how to destroying that !
Clear or Destroy or DestroyData ?
Which one ?

Confused | :confused:

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Re: Destroying COleSafeArray ...

Christian Graus22-Oct-01 18:47

Christian Graus

22-Oct-01 18:47

If it's just going out of scope, then you surely don't need to do anything - the destructor should take care of it for you. If you want to reuse the array, then DestroyData looks like a winner, if you want to kill the existing array as well as everything in it, then Destroy() will do the trick.

If you're using MFC then you can run in debug mode (F5) and when you close VC will let you know of any memory leaks, so if that is your concern ( for example, it's a COleSafeArray*), then that is a good way to see if you've leaked memory or not.

Christian

As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet.

Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery.

a Console Question ?

The_Server22-Oct-01 17:39

The_Server

22-Oct-01 17:39

Hi, All.
=======

I have an API console application.
Does anyone know if I can and how to change/set the icon ?

BTW: come to #CodeProject on DalNet (mIRC)

Re: a Console Question ?

Ben Burnett22-Oct-01 20:14

Ben Burnett

22-Oct-01 20:14

If you need to support many Windows flavours then give this a try;

TCHAR szTitle [ 1024 ];
::GetConsoleTitle ( szTitle, 1024 );	
HWND hWnd = ::FindWindow ( NULL, szTitle );

if ( NULL != hWnd ) {

	HICON hIcon = ::LoadIcon ( ::GetModuleHandle ( NULL ), 
		MAKEINTRESOURCE ( IDI_MY_ICON ) );

	if ( NULL != hIcon ) {

		::SendMessage ( hWnd, WM_SETICON, FALSE, 
			reinterpret_cast<LPARAM>( hIcon ) );

	} // if ( NULL != hIcon )

} // if ( NULL != hWnd )

Ofcourse you'll want to play nice and free the icon resource when your done, but you get the idea.

If your using Win2K you should take a look at GetConsoleWindow function and use it to replace the FindWindow code listed above (because depending on the console's title the above code might no always work as expected).

cheers,
Ben Burnett

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