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CorvetteZ0606 wrote:
So you think I should move to C#?
I think if you want to be employable you should at least download SharpDevelop and the .NET SDK and learn some C#. I'm in favour of knowing as much as possible, not putting all your eggs in one basket.
CorvetteZ0606 wrote:
I'm not very motivated to do so since I already own Visual Studio 6.0.
VC6 is crap, you should get VC7, even if you only buy the C++ compiler ( that is actually pretty cheap ). VC6 standard compliance is really bad, and VC7 is amazingly good. The STL implimentation is tons better as well. Finally, you'll find a lot more MFC7 tutorials nowadays, I would have thought.
CorvetteZ0606 wrote:
Also, doesn't an application written in C# require .Net to be installed on the computer to be able to run it?
Yes. this is a much bigger problem in the minds of people who don't use .NET than it is in the real world.
CorvetteZ0606 wrote:
What about computers running OSes like Win 2000 without .Net? Can they run an application I write in C#?
Yes, both XP and 2000 require downloading and installing the .NET framework before a C# or VB.NET app will run on them. In this day and age, how many people have trouble getting a 30 MB file ?
Christian Graus - Microsoft MVP - C++
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Christian Graus wrote:
VC6 is crap, you should get VC7, even if you only buy the C++ compiler ( that is actually pretty cheap ). VC6 standard compliance is really bad, and VC7 is amazingly good. The STL implimentation is tons better as well. Finally, you'll find a lot more MFC7 tutorials nowadays, I would have thought.
Try VS2005! This one is great, comes with free express versions (or very cheap) of C++ and C#. Also, you can use winforms and MFC together.
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The VC++ .NET Express edition doesn't come with MFC.
Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro
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 I didn't know that, but that's not a really big problem, since it ships with the beta 2.
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I have it, but I was talking about stuff that is out now, and anticipating that he didn't want to spend a bundle ( why else lumber yourself with VC6 ? )
Christian Graus - Microsoft MVP - C++
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If you can live with the bugs, the beta is a fine product. It has all the team edition features and it is free.
Besides that, he is a student and students should learn the technology of the future. Not the almost trivial things that were nice to know a lot of years ago..
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I am an MVP, I had no idea it was freely available ( I get them in the mail ). He should also know that the betas expire in time, he could be locking himself in for something he can't afford.
Christian Graus - Microsoft MVP - C++
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Christian Graus wrote:
He should also know that the betas expire in time
I didn't know that... I'll have to use my account on the MS AA server again
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Hello,
You can't learn something specific in college and expect that you can choose a wide variety of jobs after you graduate. The skills required by every job are very diverse nowdays so it's best to learn something of eveything. College is great for that, I don't think that you get an oppertunity for learning so much different things when you start working for salery. Your employer will only care about executables and the money it's going to cost him.
To the point. I think that MFC is good for learning and building large applications. Before you really know how to use it, you'll have to study on that really hard, but it's really nice to spend some of your time on.
Win32 API's are good to know too if you want to know how windows really works. There is one catch though: we are about to move on to the next generation processors in a moment. The 64 bit processors. MS will develop a complete new API for this and after a few years, your knowledge of the Win32 API will almost be useless.
If I may advise you, try and learn some managed language. C# is a very nice language for rapid development. You'll get your app up and running more fast than you'd ever imagine.
Managed C++ is also something worth to look at. .NET is going to be the main development platform for windows in the future.
I read that you own a copy of VS 6.0. I think that you should download VS 2005. The beta is free available and some express editions will be very cheap or even free after the official release. I currently use this IDE for some programs and it is great! Way better than VS 6.0
These are just the thoughts of a almost graduate student who was headstrong and thought that VS6.0 would live forever... Hope that you find this information usefull. 
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MFC is a wrapper around the WIN32 API. So, by learning WIN32 API it should make it easier to use MFC. As for a job, that's very dependent upon the company. There are some that may require MFC (We don't generally) and there are some that would require WIN32 API over MFC (If you do Windows programming, we perfer WIN32 API or at least some understanding of it as opposed to MFC generally or at least some understanding of how everything works underneath).
8bc7c0ec02c0e404c0cc0680f7018827ebee
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I am attempting to read the file Summary Information from some JPEG files. I am using the StgOpenStorageEx() to get an IStorage interface to use to get a IPropertySetStorage which is used to open the propertyset. When I run the below code everything works just fine when I have a MS Word document. When I run the same code against a JPEG file file the IPropertySetStorage::Open returns a file not found. If someone could offer some advice it would be greatly appreciated.
http://msdn.microsoft.com/library/?url=/library/en-us/stg/stg/ipropertystorage_ntfs_file_system_implementation.asp
// SummInfoDemo.cpp : Defines the entry point for the console application.
//
#define WIN32_LEAN_AND_MEAN
#define UNICODE
#define _UNICODE
#include <iostream>
#include <tchar.h>
#include <ole2.h>
int _tmain(int argc, _TCHAR* argv[])
{
TCHAR szFileName[MAX_PATH];
printf("Start Demo\n");
if(argc != 2)
printf("usage: summinfodemo filename\n");
else
{
_tcscpy(szFileName,argv[1]);
_tprintf(_T("%s\n"),szFileName);
}
IStorage *pStorage = NULL;
IPropertySetStorage *pPropSetStg = NULL;
IPropertyStorage *pPropStg = NULL;
HRESULT hr;
hr = StgOpenStorageEx(szFileName,
STGM_READ | STGM_SHARE_DENY_WRITE,
STGFMT_ANY,
0,
NULL,
NULL,
IID_IPropertySetStorage,
reinterpret_cast<void**>(&pStorage));
if(FAILED(hr))
{
if(hr == STG_E_FILENOTFOUND)
printf("File not found.");
else if(hr == STG_E_FILEALREADYEXISTS)
printf("Not a compound file.");
else
printf("StgOpenStorageEx() failed w/error %08lx\n", hr);
return 0;
}
if(SUCCEEDED(hr))
{
hr = pStorage->QueryInterface(IID_IPropertySetStorage, (void **)&pPropSetStg);
if(FAILED(hr))
{
printf("QI for IPropertySetStorage failed w/error %08lx\n", hr);
pStorage->Release();
return 0;
}
}
if(SUCCEEDED(hr))
{
FAILS HERE ---> hr = pPropSetStg->Open(FMTID_SummaryInformation, STGM_READ | STGM_SHARE_EXCLUSIVE, &pPropStg);
if(FAILED(hr))
{
printf("No Summary-Information - w/error %08lx\n",hr);
pPropSetStg->Release();
pStorage->Release();
return 0;
}
}
if (SUCCEEDED(hr))
{
struct pidsiStruct
{
char *name;
long pidsi;
}
pidsiArr[] =
{
{"Title", PIDSI_TITLE}, // VT_LPSTR
{"Subject", PIDSI_SUBJECT}, // ...
{"Author", PIDSI_AUTHOR},
{"Keywords", PIDSI_KEYWORDS},
{"Comments", PIDSI_COMMENTS},
{0, 0}
};
int nPidsi = 0;
for(nPidsi=0; pidsiArr[nPidsi].name; nPidsi++);
PROPSPEC *pPropSpec = new PROPSPEC [nPidsi];
PROPVARIANT *pPropVar = new PROPVARIANT [nPidsi];
for(int i=0; i<npidsi; i++)=""
="" {
="" zeromemory(&ppropspec[i],="" sizeof(propspec));
="" ppropspec[i].ulkind="PRSPEC_PROPID;
" ppropspec[i].propid="pidsiArr[i].pidsi;
" }
="" hr="pPropStg-">ReadMultiple(nPidsi, pPropSpec, pPropVar);
if (SUCCEEDED(hr))
{
for(i=0; i<npidsi; i++)=""
="" {
="" _tchar="" svalue[1024]="{0};
" std::string="" strtemp="pPropVar-">pszVal;
printf("%s\n",strTemp.c_str());
pPropVar++;
}
}
}
pPropSetStg->Release();
pPropStg->Release();
pStorage->Release();
printf("End Demo\n");
return 0;
}
Thanks In Advance
Anthony Baker
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Hi guys
I've been consulting with this community regarding the handling of large data files and searching stuff in them. The search process using a multimap works wonderfully. HOWEVER, the actual reading from the disk is painfully long. At some point, somebody said something about not using cout because it abuses the buffer... or something like that. I know you don't use cout to read from a file... but since a stream object from the class ifstream created to read a file
is equivalent to cin... and streams work through the buffer, it still made sense to me that using ifstream may not be the fastest way to read data from disk.
SO... I wonder, is there a faster way to read data from a file that is not using the ifstream? I know that I could use the netCDF system... but I don't have time right now to learn how to use it. So I'm looking for something more direct and simple that is already embedded within C++.
Please, in your response, can you include a simple code to exemplify the use of the alternative?
Thanks a million... you guys rock!!! 
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ifstream may well be slow if you use it to read information in a typed manner. If you just want to read a big blob of info into memory, then you may want to look into memory mapped files ( basically you become able to reference a file as if it was a chunk of memory, the Richter book on Windows C++ development covers this, but I forget the details ). Or you may want to use a C style file object to read the file into memory as one big chunk. I recommend trying all possible approaches, and timing them to see if performance is improved, if not, I'd stick with iostream.
Christian Graus - Microsoft MVP - C++
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Hi
Sorry, I learned C++ by myself and never went through C. What do you mean "C style file object to read the file into memory as one big chunk."? 
Thanks a million!
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In C ( which C++ is built on ), you use a function called ( I think ) OpenFile, and get a FILE object back. That's what I meant.
Christian Graus - Microsoft MVP - C++
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Help,
I would like to crop individual elements from an existing "cool" toolbar and add them to the default
toolbar created by an SDI project.
I can't find an easy, straightforward way to do this. I'm using VS 6.0.
Thanks in advance.
Steve
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If you're talking about copying the button images, then a good image editor (Paint Shop Pro, The GIMP, or even Paint in a pinch) is your best friend.
If you want to do it programatically, then check out the ImageList API.
You must be careful in the forest
Broken glass and rusty nails
If you're to bring back something for us
I have bullets for sale...
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Yes. I want to extract selected button images and add
them to the IDR_MAINFRAME toolbar.
I've tried Paint, but only had limited success perhaps
because I'm not adept at using Paint.
Thanks for the reply.
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Hi together - i have a quite simple problem that i can't figure out myself. If searched 3 hours, but didn't find a solution. The problem: i've created a mfc application. I also added a menu to zhe project. Now i want to use the form without a titlebar - and of course - i want to use the menu as a PopUp menu - the problem i have is, that the menu also appears as a normal menu. But thats wrong. How can i hide the menu and make it only a popup menu? Thx!
JR20!
JR20
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Sorry - was my fault - i assigned the menu with the dialog -> just stupid - sorry!
CA - Have a lot of fun...
JR20
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Hi all,
I'm trying to set the give time zone as my local time zone..
but the time that I suppose to get is totally wrong.
let say.. my local time is
currentLocalTime = 5:30 pm 05/26/2005
gmt = +5;
how can I set the local time to that gmt= +5 time zone and then reset it back to original time zone?
the following is my testing code.
<br />
SYSTEMTIME sysTime;<br />
SYSTEMTIME sysTime1;<br />
int gmt;<br />
<br />
COleDateTime formatedDateTime;<br />
COleDateTime currentDateTime;<br />
::GetLocalTime(&sysTime); <br />
currentDateTime.SetDateTime(sysTime.wYear,sysTime.wMonth,sysTime.wDay,sysTime.wHour,sysTime.wMinute,sysTime.wSecond);<br />
CString temp = currentDateTime.Format("%m-%d-%Y %H:%M:%S %p");<br />
<br />
gmt = atoi(selectedTimeZone); <br />
COleDateTimeSpan timeSpan(0,gmt,0,0); <br />
<br />
formatedDateTime = currentDateTime - timeSpan;<br />
sysTime1.wDay = formatedDateTime.GetDay();<br />
sysTime1.wHour = formatedDateTime.GetHour();<br />
sysTime1.wSecond = formatedDateTime.GetSecond();<br />
sysTime1.wMinute = formatedDateTime.GetMinute();<br />
sysTime1.wYear = formatedDateTime.GetYear();<br />
sysTime1.wMonth = formatedDateTime.GetMonth();<br />
<br />
::SetLocalTime(&sysTime1); <br />
::GetLocalTime(&sysTime1); <br />
currentDateTime.SetDateTime(sysTime1.wYear,sysTime1.wMonth,sysTime1.wDay,sysTime1.wHour,sysTime1.wMinute,sysTime1.wSecond); <br />
CString temp1 = currentDateTime.Format("%m-%d-%Y %H:%M:%S %p");<br />
<br />
::GetLocalTime(&sysTime); <br />
currentDateTime.SetDateTime(sysTime.wYear,sysTime.wMonth,sysTime.wDay,sysTime.wHour,sysTime.wMinute,sysTime.wSecond);<br />
temp1 = currentDateTime.Format("%m-%d-%Y %H:%M:%S %p");<br />
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hm, at first, you didn't change the timezone in the computer - in the best case, you only mixed-up with the current time (which is still in your local timezone).
Second - adding offset in the hours does not always mean switching to another timezone - you have to think about summer time/winter time issues (although this is adding the hour offset as well, but different time offset in different time)
You have to realize is that stuff like local time and changing the timezone will affect other programs, and they have no idea that something like that is happenning 
Anyway, what I don't understand is why you want to switch to some timezone and then back to the original timezone.
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Thank you for your reply Geo,
Well.. I have to find out what is the time for given time zone (GMT +/-).
I though, get the local time, use COleDateTimeSpan() then I will get the time from the time zone I want. But I didnt' get it.
I have to read the emails.. the emails might be sent from LA, US. or could be from Tokyo. I know the GMT for Japan is +9 so.. I need to convert the sent date time from LA (local) to Tokyo time. I'm using MS Outlook to open the msg files, sometime .pst files.
I was thinking of changing my time zone in my computer system, so I dont' have to change the date and time all the time for every single email. Then change the time zone back to my local time zone after I finished using MS Outlook.
Thank you.
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Hi, changing the global setting like the computer's current time zone is a bad thing, because it can affect other programs and lead to some even serious problems. Problem is that the timezone is a setting for all programs running under the user profile - if some program relies on the time, it can be wrong in that time (especially if it doesn't handle correctly change of the timezone in runtime)
If you know the correct time offsets, you can use the COleDateTimeSpan, it should work - but you have to convert it twice as the GMT+/- offsets are relative to the GMT - so if you have e-mail from Japan (+9) you have to subtract 9 from the time and you'll get the GMT. Then you have to add offset of your timezone (or use any function that returns local time from the UTC/GMT time) to get the local time.
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We have a subclass of CToolbar and we are using the 'LoadToolBar()' method to create the buttons etc. for the bar from a bitmap image.
My question is, how can I use my own button subclass, instead of CButton for the actual toolbar buttons? In fact, I would like to be able to 'mix' the button objects: CButton, CBUtton, MyButton, CButton etc. within the same toolbar.
My apologies if this has been answered here before in the last 2 months.
Tim
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