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Hi all
Suppose i create new structure
and defined for one two diffrent constructors
structure CClass
{
CClass():i(0){}//First construcotr
CClass(int x){//Second constuctor
CClass();//Invoke First construcotr
/*
But this code not initialize i member!!! Why ???
*/
}
/*
If i write my constructor this way
CClass(int i):CClass(){}
My linker complain : 'illegal member itialization
CClass is not a base or member'
???????????????????????????????????????????????????
*/
int i;
}
Thanks much.
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you can't ( ? ) use current class in initialiser list.
maybe doing something like
CClass(int x) { Init(x); }
CClass() { Init(someDefaultValue);} ;
Maximilien Lincourt
Your Head A Splode - Strong Bad
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C++ does not allow a constructor to call another constructor in the same class. You can only call the constructor of the base class.
For your simple case you can avoid having two constructors by using the default parameters feature (which Java and C# don't have):
CClass(int x = 0) :
i(x)
{
}
Regards,
Alvaro
Give a man a fish, he owes you one fish. Teach a man to fish, you give up your monopoly on fisheries.
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In the first case when you invoke the good constructor but on another anonymous instance!!! Which is totally useless since this new instance has no relation with this
In the second case, you can only use base class constructors in the initilisation list. So it's wrong.
you could use for instance: *this = CClass()
Hope it's been some help 
-MyttO
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You could, but you probably shouldn't. Then you'd be constructing an extra object every single time the constructor is called.
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It seriously depends on whether you prefer wasting time coding extra methods, or wasting processor cycles allocating and desallocating memory
All is context dependant... 
-MyttO
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Feh. :p It doesn't really take any more time to create an init method.
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Sure, but yet it's still a code fragment in both in Class.h and Class.cpp, and then extra noise in your cade that don't bring much semantics.
One of my most important guidelines in code writing is conciseness: code is easier to maintain, undestand, and even read -- since you don't have to scroll down for hundreds of pages in your favourite editor 
But actually, it's clearly more a style than a commandment
-MyttO
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real_space_monkey wrote:
CClass(int x){//Second constuctor
CClass();//Invoke First construcotr
But this code not initialize i member!!! Why ???
Because writing CClass(); in a function body does not invoke the first constructor. CClass() means "create a temporary CClass object using the default constructor." As others have said, that code has no effect on the this object.
--Mike--
Personal stuff:: Ericahist | Homepage
Shareware stuff:: 1ClickPicGrabber | RightClick-Encrypt
CP stuff:: CP SearchBar v2.0.2 | C++ Forum FAQ
----
"Linux is good. It can do no wrong. It is open source so must be right. It has penguins. I want to eat your brain."
-- Paul Watson, Linux Zombie
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THANKS ALL
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Is there a way to programmically get the users attached to a SQL database with out running a stored procedure?
Thanks
Tom Wright
tawright915@yahoo.com
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As far as I remember, the ADO.Command.CommantText could either a store procedure or any valid SQL statement.
-MyttO
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Hi there!
I would like to write information in the file properties available in the properties tab when right-clicking a file in the explorer.
Especially the title-subject-comment-revision number fields...
I've scanned MSDN and CP but found nothing really useful.
Hopefully you guys got clues!!
-MyttO
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Actually this article uses the SetFileTime() function for well known creation/modification/access times properties.
But I can't see any SetFileProperties (?) or whatsoever.
-MyttO
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How about SetFileAttributes?
Regards,
Alvaro
Give a man a fish, he owes you one fish. Teach a man to fish, you give up your monopoly on fisheries.
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attributes are all CHMOD-like extended state...
No natural language data i'm afraid 
-MyttO
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Oh, are you referring to Version information? You can set those in the resource editor. What exactly do you need?
Regards,
Alvaro
Give a man a fish, he owes you one fish. Teach a man to fish, you give up your monopoly on fisheries.
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As i first said I need to write the title-subject-comment-revision number fields on files my app produce.
Hence I can't use the resource editor...
-MyttO
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MyttO wrote:
the title-subject-comment-revision number fields
These don't sound like Version Information fields. What kind of files are these?
Regards,
Alvaro
Give a man a fish, he owes you one fish. Teach a man to fish, you give up your monopoly on fisheries.
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Mine...
I want to add somehow those properties
-MyttO
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Compound-document properties. See this thread.
"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)
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Hello guys,
I am wondering if there is a way to get a handler and so to kill the messageboxes created by ::MessageBox() or AfxMessageBox() from other thread?
Or I have no choice but to manually make a class to produce the very same dialogue and kill it by destroy the class.
Thanks alot
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This[^] article that describes an auto-close modal dialog may come in handy.
/ravi
My new year's resolution: 2048 x 1536
Home | Articles | Freeware | Music
ravib@ravib.com
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You may use FindWindow to retrieve the message box's handle which then you can destroy with DestroyWindow.
Regards,
Alvaro
Give a man a fish, he owes you one fish. Teach a man to fish, you give up your monopoly on fisheries.
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