C / C++ / MFC Discussion Boards

Re: C++ / Visual C++

Renjith Ramachandran24-Sep-02 0:17

Renjith Ramachandran

24-Sep-02 0:17

Question is Silly but Good

VC++ is Microsoft specific...

A Programmer Never Dies..!!

Re: C++ / Visual C++

markkuk24-Sep-02 0:36

markkuk

24-Sep-02 0:36

C++ is a programming language, Visual C++ is Microsoft's product for programming in the C++ language.

Re: C++ / Visual C++

Alexandru Savescu24-Sep-02 1:51

Alexandru Savescu

24-Sep-02 1:51

markkuk wrote:
C++ is a programming language, Visual C++ is Microsoft's product for programming in the C++ language.

This is the nicest (shortest and accurate) explanation Smile | :)

Best regards,
Alexandru Savescu

Can C# use C++ classes ?

Anonymous23-Sep-02 22:32

Anonymous

23-Sep-02 22:32

Can C# use the unmanaged classes I created with VC++ 6.0 before, which use many pointers ?

Re: Can C# use C++ classes ?

Jon Hulatt24-Sep-02 5:14

Jon Hulatt

24-Sep-02 5:14

No. C# and C++ are totally different languages.

Signature space for rent. Apply by email to....

Re: Can C# use C++ classes ?

Stephane Rodriguez.24-Sep-02 5:30

Stephane Rodriguez.

24-Sep-02 5:30

Yes. Just build a DLL around it.

Then from C# you call the exported DLL functions thanks to the [DllImport("mydell.dll")] attribute.

The other way is also possible. Documented in MSDN.

MS quote (http://www.microsoft.com/ddk) : As of September 30, 2002, the Microsoft® Windows® 2000 DDK, the Microsoft Windows 98 DDK, and the Microsoft Windows NT® 4.0 DDK will no longer be available for purchase or download on this site.

Tell me what means "Cancelo"

stevenson23-Sep-02 22:28

stevenson

23-Sep-02 22:28

Hi,
Tell me what means "CancelIo"?
Thnx

Extreme programming. Do the No.1

Re: Tell me what means "Cancelo"

Tomasz Sowinski23-Sep-02 23:38

Tomasz Sowinski

23-Sep-02 23:38

I guess you're after API function CancelIo which "cancels all pending input and output (I/O) operations that were issued by the calling thread for the specified file handle. The function does not cancel I/O operations issued for the file handle by other threads". MSDN has the details.

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

To some its a six-pack, to me it's a support group

error C2065: undeclared identifier

nevada23-Sep-02 20:21

nevada

23-Sep-02 20:21

I am working on 3D Studio Max R4 to create a plugin using visual c++6.0 However, when I tried to add a win32 API using a sample cpp file, I get this error: c2065 undeclared identifier

I have defined the API in resource.h, .rc file format and the .cpp format. However, I still get that error. In addition, I have updated my SDK in Aug 2002. Can someone solve this prob? I will be grateful for that. Thanxxx.

Re: error C2065: undeclared identifier

Nish Nishant23-Sep-02 21:18

Nish Nishant

23-Sep-02 21:18

Which API function gives you this error? On a side note, I hope you've included windows.h!

Regards,
Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: error C2065: undeclared identifier

Tomasz Sowinski23-Sep-02 23:51

Tomasz Sowinski

23-Sep-02 23:51

So what's the name of identifier causing C2065?

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

To some its a six-pack, to me it's a support group

VARIANT

Anonymous23-Sep-02 18:47

Anonymous

23-Sep-02 18:47

hello,

how to convert a variant to CString..i used _bstr_t & CString..but i am not getting any ans..

Re: VARIANT

Carlos Antollini23-Sep-02 20:01

Carlos Antollini

23-Sep-02 20:01

CString str = var.bstr;

Where var is type variant.

But you need to check if the var is type BSTR. For that you need to test if var.vt == VT_BSTR Wink | ;)

;);)
In other case you need to use the VariantChangeType function to convert the variant to BSTR....

Regards

Carlos Antollini.
Sonork ID 100.10529 cantollini

Buildin Director Xtras with Visual C++

nencini23-Sep-02 18:19

nencini

23-Sep-02 18:19

I've studied XtraBuilder and (a little)
XDK, examinig the examples, and now I'd
like to begin coding myself using Visual
C++ but ... I don't know how to start
building an Xtra !!!
When I open file-new I dont't know what
to choose (even if I'd made some tests).
Somebody can help me to start?
Thanks.

VIEW

candan23-Sep-02 17:36

candan

23-Sep-02 17:36

I have a file that combine htmls and gifs.
For example the first 100 bytes is html the rest is the gifs related the html. How can I fill them to webcontrol ? Can I read them to memory and put the memonry to webcontrol (IE) ?
Please give me some hints ? Thank you.

Re: VIEW

jmkhael24-Sep-02 1:12

jmkhael

24-Sep-02 1:12

u have to cut the file into several files: the html file, and one for each gif, and then Navigate2 the html file!

Papa
Murex Co.

while (TRUE)
Papa.WillLove ( Bebe ) ;

geting Outlook/Outlook Express email account settings?

Anonymous23-Sep-02 16:22

Anonymous

23-Sep-02 16:22

Hi,

have you ever come across some info on this?

Thanks

R.

Re: geting Outlook/Outlook Express email account settings?

Nish Nishant23-Sep-02 21:21

Nish Nishant

23-Sep-02 21:21

Anonymous wrote:
have you ever come across some info on this?

It's mostly in the registry (for OE anyway)!

HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts

Regards,
Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

How could I get attributes of remote file ?

Bigapple23-Sep-02 15:24

Bigapple

23-Sep-02 15:24

I'm building a project about download files.

I should get the length and last modify date of remote file.

How should I do this ? Confused | :confused:

Thank you very much!

Re: How could I get attributes of remote file ?

Todd Smith23-Sep-02 16:03

Todd Smith

23-Sep-02 16:03

You need to use either FTP or HTTP depending on what kind of server the files are being hosted on. Check codeproject for code on how to handle both of those protocols.

http://www.codetools.com/internet/[^]

Todd Smith

Re: How could I get attributes of remote file ?

Bigapple23-Sep-02 18:36

Bigapple

23-Sep-02 18:36

Hi, Todd,

Thank you very much! Smile | :)

URGENT required help on Printing Text size!

23-Sep-02 15:13

Hi,

I am working on printing a List Box contents, so far it has worked ... except that I could not change the "Text size", here is a part of my codes:

<br />
    CFont   Font;<br />
    LOGFONT lf;     <br />
    CDC	    dc;<br />
<br />
    memset(&lf, 0, sizeof(LOGFONT::ZeroMemory(&lf, sizeof(LOGFONT));<br />
    lf.lfHeight = -MulDiv(10, dc.GetDeviceCaps(LOGPIXELSY), 72);<br />
    strcpy(lf.lfFaceName, "Arial");    <br />
<br />
    Font.CreateFontIndirect(&lf);<br />
    dc.SelectObject(&oFont);	<br />
    CString	text("A") ;<br />
    CSize	csText = dc.GetTextExtent(text) ;<br />
    ----------------------------------------------- (some more detail)<br />
    m_listbox.GetText(line_printing, text) ;<br />
    dc.DrawText(text, CRect(x, y, x + Info.m_rectDraw.Width(), y + csText.cy), DT_EXPANDTABS) ;<br />
		<br />

*) I tried to change lf.lfHeight, but the result is that I only changed the spacing for vertical printing! What ever I change that or lf.lfFaceName ... the "Text size" printing out ... has never been changed!

Can someone help me on this, I am really appreciate it ... if provide me an Email ddress, I will send a small zip about my small project (just to try the printing)!

Many thanks,

Re: URGENT required help on Printing Text size!

Tomasz Sowinski23-Sep-02 23:49

Tomasz Sowinski

23-Sep-02 23:49

Are you sure that dc you're using to call GetDeviceCaps is actually printer DC?

Also, you may use CFont::CreatePointFont to avoid bit-twiddling.

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

To some its a six-pack, to me it's a support group

Re: URGENT required help on Printing Text size!

ATC24-Sep-02 13:13

ATC

24-Sep-02 13:13

Hi,

I did try to use as your suggestion:

VERIFY(oFont.CreatePointFont(80, "Arial", &dc)); // 120 = 12 point font

for replacing:

// oFont.CreateFontIndirect(&lf); // Create the font.
// dc.SelectObject(&oFont); // RIA, select he font into the DC

The result was the same Text size! Someone knows why?

- For the GetDeviceCaps is actually printer DC? I think Yes, because we have to use to calculate the Paper size ... and so far it is OK!

Many thanks for any help

CArchive File Format?

Matthew R. Miller23-Sep-02 14:46

Matthew R. Miller

23-Sep-02 14:46

Ok I am going to try and explain this without confusing both you and myself. I have a file that I am writing custom CObjects to. The first thing written/read from the file is the number of objects that are in the file… so I know how many times to read from the archive.

Say that number is 5, and then I close the file, open it again, and rewrite more objects now the number is 10. Do I have to clear the file and rewrite all the objects? If I do not clear the file, and just write at the start position or will this corrupt the file because it will be overlapping the first object.

To make it even more confusing, do I have to include the number of objects, or is there an easier way. My overall objective is to create a log file, so I subclassed CObject, to create my own objects… to make it easier to write.

If you have any answers to one or all of my questions, I would GREATLY appreciate it. I have read MSDN, but am very confused about how it works… I know it’s hard to create your own file format. Thank you for your time. Poke tongue | ;-P

"Best file compression around: DEL *.* = 100% compression."

<><><><><><><><><><><><><>
Matthew R. Miller
mattrmiller@computersmarts.net
www.computersmarts.net

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