C / C++ / MFC Discussion Boards

Anders Molin31-Dec-00 14:35

31-Dec-00 14:35

Hi,

Have any of you ever succesfully used the build-in profiler in VC6?

I have tried on several machines without luck. Confused | :confused:

After my App have finished, VC tell's me that it can't find a file in the outputdir called "test.pbo" (if my project is called test)...

Any ideas?

TIA,

- Anders

converting char to bstrVal

31-Dec-00 11:57

Heres a hard coded sample of assigning "Hello" to this variant bstr value. How would I assign a char* or char[] to bstr?

char *cTemp="Hello";
char cTemp2[32]="Hello";

VARIANT v;
v.vt = VT_BSTR;
v.bstrVal = SysAllocString(OLESTR("Hello"));//work ok

// how would I assign these?
v.bstrVal = cTemp;
v.bstrVal = cTemp2;

Confused | :confused:

Re: converting char to bstrVal

Anders Molin31-Dec-00 12:55

Anders Molin

31-Dec-00 12:55

There might be smarter/better ways to do it, but the following code works Smile | :)

char *t = "just testing";
CComBSTR bs;
bs.Append(t);
VARIANT v;
v.vt = VT_BSTR;
v.bstrVal = bs;

- Anders

Re: converting char to bstrVal

Michael Dunn31-Dec-00 16:25

Michael Dunn

31-Dec-00 16:25

You don't assign a char* to a BSTR, because a BSTR is not a C string. If you want to create a BSTR from a char array, use an ANSI<->Unicode conversion function, for example T2OLE:

#include <atlconv.h><br />
 <br />
  V.bstrVal = SysAllocString ( T2COLE(cTemp) );

--Mike--
http://home.inreach.com/mdunn/
"That probably would've sounded more commanding if I wasn't wearing my yummy sushi pajamas."
--Buffy

Re: converting char to bstrVal

1-Jan-01 15:46

Thanks I found the follwoing seems to work...
var.bstrVal = (_bstr_t)cTemp;

Re: converting char to bstrVal

Michael Dunn1-Jan-01 18:20

Michael Dunn

1-Jan-01 18:20

No, that code is incorrect. It will not work reliably. You're putting into var.bstrVal the contents of a temporary variable, which gets destructed once that assignment statement completes.

--Mike--
http://home.inreach.com/mdunn/
"That probably would've sounded more commanding if I wasn't wearing my yummy sushi pajamas."
--Buffy

LPT port address?

30-Dec-00 22:45

how can detect the current lpt port address
because the lpt has three different addresses and can be changed from the setup of pc.

thanks

Problems with Updating

Robert Heyman30-Dec-00 20:46

Robert Heyman

30-Dec-00 20:46

I am trying to update a .dbf database. I opened the database and the
CRecordset derived object with settings so the database could be
updated. CanUpdate() returns true. Yet when I try to call Update(),
I get a message that says the database is read only! How can this
happen, and how do I fix it?

Robert

DLL address space

Lars Ove Claesson30-Dec-00 14:47

Lars Ove Claesson

30-Dec-00 14:47

Hi!

I'm trying to write a DLL, which contains calls to COM methods.
Most calls works OK, and everything seemed fine in the beginning,
but now I've encountered that a COM method call genererates an
access error (STATUS_ACCESS_ERROR).

What I'm actually trying to do, is to use the Microsoft Platform
SDK with Borland C++, which is seemingly hopeless. Therefore, I'm
wrapping my methods up in a DLL written in Visual C++ with the
wanted PSDK calls (actually the WIA SDK for Windows ME), and then
using this DLL in the Borland program I'm creating.

I haven't really encountered any access errors writing DLLs before,
so I thought everything was going to be fine. But I suspect that
some sort of initialization should be done in the DllMain-function
related to memory handling? Confused | :confused:

By the way, if I try the same COM-call in a "real" application,
everything works fine, only the call in a DLL makes the access
error.

I would be extremely grateful for any help or suggestions when
it comes to what could be wrong. I could include code samples,
but don't think they are needed. Some general guidelines to DLLs
could be enough to get me on track!

Regards,
Lars Ove Claesson

ClistCtrl, MSCOMCTL.OCX

30-Dec-00 9:02

Hello

I need help on creating ActiveX Composite Control (MSCOMCTL.OCX) with visual interface like modelless dialogbox with listview control
with VC++6 MFC ActiveX Control.

I need samples and code, but not VB!Thanks...

Best regards

getting CDROM name

30-Dec-00 7:06

Has anybody got any c++ code which will get the name of the CDROM drives on your pc? I have two CD Rom Drives which are SAMSUNG and LG. I want the code to get these names from the system - any hints or tips would be appreciated - many thanks in anticpation.

How Was MS Money Made?

29-Dec-00 15:35

Anyone looked at Microsoft Money and said, "I know exactly how they did this. Cool | :cool:

"?

I have a contact manager project ahead of me, Feb/Mar... and was thinking of the look/functionality of MS Money. There are a lot of things that seem different from the normal Doc/View architecture. Any thoughts?

Thanks!

Scott!

PS. Please don't flame if this is a stupid question, I am new to non wizard generated gui plumbing, but am willing to read and practice to gain necessary knowledge.

Re: How Was MS Money 2001 Made?

29-Dec-00 18:22

Sorry, forgot to mention what version. Confused | :confused:

Scott!

Re: How Was MS Money 2001 Made?

Colin J Davies2-Jan-01 19:44

Colin J Davies

2-Jan-01 19:44

Can you post a screenshot , I've never seen it !
.
However I remember reading circa Internet Explore Release 4.7, that the GUI of MSMoney had been changed to a MSHTML driven App using the IE components,

But Like I said I've never seen MSMOney !

Regardz
Colin Davies

VS Macro... Help wanted

Amit Dey29-Dec-00 10:50

Amit Dey

29-Dec-00 10:50

How do I get current projects name and path using Visual Studio macros?
Confused | :confused:

Re: VS Macro... Help wanted

J Patel3-Jan-01 5:36

J Patel

3-Jan-01 5:36

To get the 'active' projects' name try..

Application.ActiveProject.Name

To get the full name (I assume the path is in here..)

Application.ActiveProject.FullName

HTH

Jignesh

Sorry guys! One more request! :)

Masoud Samimi29-Dec-00 9:15

Masoud Samimi

29-Dec-00 9:15

Hi again!

I forgot to ask this as well in my previous post.

I thought to also add the feature to produce Animated GIF output to my app and I needed some hints/guidance to where I can find sample codes or any library ready to use inorder to produce Animated GIFs from a sequnce of animated screen activity of my app! Wink | ;)

Again Thankx so much IN ADVANCE and FOREVER! Big Grin | :-D

" I love water, but hate to drown! "
-- Masoud Samimi
Website: www.geocities.com/samimi73

Amigos Por Favor! (Was: Sorry guys! One more request! :) )

Masoud Samimi3-Jan-01 10:16

Masoud Samimi

3-Jan-01 10:16

Hola!

Come on! Nobody! Smile | :)

Muchas Gracias

"Silence is golden, but my eyes still see."
-- Masoud Samimi
Website: www.geocities.com/samimi73

AVI and Extracting BMPs... :)

Masoud Samimi29-Dec-00 9:08

Masoud Samimi

29-Dec-00 9:08

Hi All!

OK, this may sound too technical but I've done almost 80% of the job! Only one problem I have to solve which I could not since 3 days trying! Frown | :(

I need help and it is this:

I get the 1st frame of the AVI stream and pass it to a function that accepts two parameters, a file name string and an LPBITMAPINFOHEADER lpbih which is the 1st AVI frame I mentioned above.

OK, I fill the lpbih with the format I desire and then try to save it plus the rest of the extracted frames into BMP files and to HD!

I fail in this process as the saved BMPs are only 1KB and empty(no image data)! Frown | :(

ANY HELP IS HIGHLY APPRECIATED IN ADVANCE! and of course FOREVER! Big Grin | :-D

" I love water, but hate to drown! "
-- Masoud Samimi
Website: www.geocities.com/samimi73

Knocking on heaven's door! (Was: AVI and Extracting BMPs... :) )

Masoud Samimi3-Jan-01 10:13

Masoud Samimi

3-Jan-01 10:13

Hey guys!

What's up! Just a reminder that I still need some of your replies! Big Grin | :-D

Cheers

"Silence is golden, but my eyes still see."
-- Masoud Samimi
Website: www.geocities.com/samimi73

Re: Knocking on heaven's door! (Was: AVI and Extracting BMPs... :) )

3-Jan-01 10:23

Check Platform SDK, there are three sample programs (AviEdit, AviView, ...)

Re: Knocking on heaven's door! (Was: AVI and Extracting BMPs... :) )

Masoud Samimi4-Jan-01 6:34

Masoud Samimi

4-Jan-01 6:34

Hi!

Thankx for your reply, I appreciate! Smile | :)

I have the SDK samps already and gone through them as well! but not one of them shows what I need! Frown | :(

I thought if anyone has done this already and knows how! Smile | :)

"Silence is golden, but my eyes still see."
-- Masoud Samimi
Website: www.geocities.com/samimi73

:confused: Help.....vector ..not recoganised

29-Dec-00 5:43

Hi, I am writing a programme and using vector in it, and I get host of errors. So I wrote a simple program using vector to get an idea what is wrong with my vector definition. The simple program is as follows:

======================
#include<vector>

class me{
vector <<string>> my;
};
==========================

List of Errors I get on compiling:

c:\gen.cpp(4) : error C2143: syntax error : missing ';' before '<'
c:\gen.cpp(4) : error C2501: 'vector' : missing storage-class or type specifiers
c:\gen.cpp(4) : error C2059: syntax error : '<'
c:\gen.cpp(4) : error C2238: unexpected token(s) preceding ';'
===============================================================================

CAN SOMEONE HELP ME PLEASE...................WHATS WRONG WITH MY PROGRAM !!!
PLEASE...............THIS IS AN SOS.......................

Re: :confused: Help.....vector ..not recoganised

Naveen29-Dec-00 5:45

Naveen

29-Dec-00 5:45

Please note that between the angle brackets after vector is 'int' which however is not showing in the message I don't know why !!

Re: :confused: Help.....vector ..not recoganised

C^hris L^osinger29-Dec-00 6:00

C^hris L^osinger

29-Dec-00 6:00

This is my standard #include setup for vectors:

#include <vector>
#include <iterator>

#pragma warning(disable:4786)
using namespace std ;
using namespace std::rel_ops ;

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.