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Hello,
I'm currently reading "Modern C++ design" by A. Alexandrescu (nice book but quite heavy to read, gives some headaches  ).
There is one chapter going in details about typelists. Very nice, but.... what are their use  ? I mean in a concrete application or algorithm. When is it usefull ?
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as i don't know that book, i was wondering : was are those "typelists" all about something like STL containers, or else ?
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toxcct wrote: was are those "typelists" all about something like STL containers
No, it has nothing to do with containers (in the way you think of them). In fact it's a kind of compile-time 'list' that contain types (so, integer, unsigned integer, ... or even classes type). It is devoid of any value and it uses template heavily but in a way that you wouldn't have imagined  .
The concept is quite difficult to explain; maybe you can take a look here[^]
But I don't really see a concrete application for them.
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You could ask Andrei directly ([^]) about that 
SkyWalker
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If memory serves me correctly, that is used in template meta-programming, which is a very detailed subject in and of itself. While some of the things it can do for you are both interesting and creative, I've yet to find a reason to use a meta-programming solution vs a coded solution. Meta-programs are more flexible, but are almost impossible to read. Right now, it is a solution looking for a problem.
If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week
Zac
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Zac Howland wrote: Right now, it is a solution looking for a problem.
 That's exactly what I was thinking when reading this chapter
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Cedric Moonen wrote: That's exactly what I was thinking when reading this chapter
Don't worry, that is what most people think when they look at this "nifty feature" of templates. There are a few books dedicated to meta-programming, but if you look at them, you see that the syntax is so complex that even simple things like loops become very difficult to read -- and try debugging something that is written at compile time :P
If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week
Zac
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Hi world...
I want to change the CMonthCalCtrl language. Is this possible?
Is there another calendar control where I could do that?
I don't use dotNET framework but MFC (I know...)
Thanks for any advice!
Hello World!!! 
from Raphaël
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Raphaël Kindt wrote: change the CMonthCalCtrl language
Subclassing the Control is one way to do this.
Somethings seem HARD to do, until we know how to do them.
 _AnShUmAn_
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Could you give me more informations?
After subclassing, what must I do to translate the text inside the calendar?
Thanks for the reply.
Hello World!!!
from Raphaël
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I think that the language of the control changes when you change the local settings of the computer (so if you are running on a french windows, it will be displayed in french). So, this is done automatically.
It is like the Ok and cancel texts that appears on the message boxes.
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I know that.
But the user must be able to change the language directly from the menu.
At this time I'm writing new string ressource (DLL project) for each new language.
When the user change the language I dynamically load the good ressource (inside DLL) for this language.
Hello World!!!
from Raphaël
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The ways the dates are used and the way they are displayed are based on the Regional Settings of the Control Panel.
There is a "silent way" to programmatically change those settings. You can use Rundll32.exe to call the Regional and Language Options Control Panel with an answer file that specifies the appropriate settings. The syntax for calling Rundll32.exe from the command line is as follows:
Rundll32 shell32,Control_RunDLL intl.cpl,,/f:"Some_Path\Your_File.txt"
That file must contain a [RegionalSettings] section that specifies the appropriate settings.
You will have to work on the line containing the following information:
Language="locale ID"LanguageGroup="language group ID","language group ID
SkyWalker
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That seems interesting...
But only the application language must be change. Not all the Windows language.
Could I use this method to only change my application language?
Thanks for your reply.
Hello World!!!
from Raphaël
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No!
In your case, you could derive a class for the base one and override the methods dealing with displaying text, where you could use some string resources you must create (which will contain the texts you write as translation texts).
SkyWalker
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Thanks a lot for yout reply.
I have another question.
which is the method's name to override?
I'm looking for this method... But there is too much methods...
Hello World!!! 
from Raphaël
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How to set dynamically title for property page where 2 property pages share a common IDD.?
I need to set title for dynamically added property pages which have same IDD defined in resource.h.
Both the property pages share the same #define IDD_PROPERY_PAGE 1232 in resource.h.
Thanks
Raji
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see this,
CPropertyPage obj1,obj2;
obj1.Construct(IDD_PROPPAGE_MEDIUM1,IDS_ONE);
obj2.Construct(IDD_PROPPAGE_MEDIUM1,IDS_TWO);
CPropertySheet sh;
sh.AddPage(&obj1);
sh.AddPage(&obj2);
sh.DoModal();
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Some of the users are getting error when they run the application
An Unsupported Operation was attempted.
application is developed in VC++ using MFC.
could someone please advise.
Na
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can you show some code ? which probably giving this error.
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Yes. NEVER ship an app that doesn't contain a framework to catch all exceptions and log their details, preferably with a custom dialog that sends the details to your office, so that you're able to do more than say 'it works here..... "
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
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Given a dll, is there any Windows API or any utility, that can determine, if the DLL supports unicode strings or Ansi strings.
Thanks!
Suyash
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No.
Unicode/ANSI support is defined per function (via argument/return types, or by API doc's that state the function uses Unicode/ANSI internally) not per dll.
...cmk
Save the whales - collect the whole set
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Hi,
I am trying to record a conversation into a file using .wav format.If possible can u plz specify which headers should i use and in which format should i write the file.I am using socket programming using C and using the VC++ environment.I tried using the save my sound command but did not understand how to go abt in doing this.I want to save the file on the hard disk.Waiting for an early reply.
Thanks,
Riz
Riz
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See Herefor some help
Somethings seem HARD to do, until we know how to do them.
_AnShUmAn_
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