Re: Templates - C / C++ / MFC Discussion Boards

Re: conection with sql

Hamid_RT20-Jul-06 1:02

Hamid_RT

20-Jul-06 1:02

You can articlesSql Server[^] maybe it is some helpful to you

whitesky

external dependencies

thathvamsi19-Jul-06 22:32

thathvamsi

19-Jul-06 22:32

hi all,
how to add external dependencies for a project?
I need to add a header file for the project as a external dependency. How to I add it?

Re: external dependencies

Cedric Moonen19-Jul-06 22:42

Cedric Moonen

19-Jul-06 22:42

Go in the project settings, C++ tab, general category and there, you have "Additional Include Directory". Put the path to the folder which contains the header file there.
Then, you can simply add the header to your project.

Another solution (much simpler) is simply to copy the header file into the folder which contains the sources of your program and add it to your project.

Cédric Moonen
Software developer

Charting control

Templates

Russell^'19-Jul-06 21:54

Russell^'

19-Jul-06 21:54

Hi,
Is it possible to use tests on the template typename(during compile, not in runtime)?
Something like:

template<typename T> class MyClass{<br />
...<br />
T m_Var;<br />
...<br />
void fun(){<br />
#if T==double<br />
....<br />
#else<br />
..<br />
#endif<br />
}<br />
}

Cheers,
Russell

Re: Templates

toxcct19-Jul-06 21:59

toxcct

19-Jul-06 21:59

no, because T is assigned at runtime, while #if is evaluated before the compilation

BTW, there's a mechanism called templates specializations, which allow you to design the templated class for a particuliar template parameter...

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: Templates

Russell^'19-Jul-06 22:25

Russell^'

19-Jul-06 22:25

toxcct wrote:
T is assigned at runtime

I'm not sure, are you? templates are expanded during compilation.

Elseway have you got a good link to learn something on "templates specializations".

Thanks.

Cheers,
Russell

Re: Templates

toxcct19-Jul-06 22:35

toxcct

19-Jul-06 22:35

hum, ok, maybe not at runtime, but at compile time at least.

unfortunately, preprocessing directives are executed BEFORE the compilation... so, no chance to do it like this

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: Templates

Russell^'19-Jul-06 22:47

Russell^'

19-Jul-06 22:47

yes, I know that I can't use preprocessing directives, It was only an sintax example: I'm asking exacly on the template sintax that it can be used.

Cheers,
Russell

Re: Templates

toxcct19-Jul-06 22:52

toxcct

19-Jul-06 22:52

then search for "template specializations"

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: Templates

NrmMyth20-Jul-06 1:06

NrmMyth

20-Jul-06 1:06

toxcct wrote:
because T is assigned at runtime

Templates ane not .NET generics.
Compiler generates all specializations for used parameters.

template<typename T> class CLS;<br />
<br />
CLS<double> aaa;<br />
CLS<vector<int> > bbb;

At compile time, this will create double and vector<int> specializations for template.

Re: Templates

toxcct20-Jul-06 1:49

toxcct

20-Jul-06 1:49

WTF

what are you talking about ?

NrmMyth wrote:
Templates ane not .NET generics.

where have you seen me saying this ?

and what is the point in saying this to me ? do you criticise my answer ? do you suggest something better than what i did ? Unsure | :~

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: Templates

NrmMyth20-Jul-06 3:37

NrmMyth

20-Jul-06 3:37

You gave an wrong information.
I think that everyone has a right to correct you.

Re: Templates

toxcct20-Jul-06 3:39

toxcct

20-Jul-06 3:39

NrmMyth wrote:
I think that everyone has a right to correct you.

of course !

but not only he doesn't explain where i was wrong but he also "repeats" words that i never said ! Frown | :(

where have you heard me saying that templates were .NET specifics ? Mad | :mad:

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: Templates

NrmMyth20-Jul-06 5:29

NrmMyth

20-Jul-06 5:29

I aplogize for every mental pain I caused. Please accept it.

Re: Templates

toxcct20-Jul-06 5:31

toxcct

20-Jul-06 5:31

nevermind

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: Templates [modified]

Oliver Anhuth19-Jul-06 22:05

Oliver Anhuth

19-Jul-06 22:05

template<typename T> class MyClass;

template<> class MyClass<double>
{
...
T m_Var;
...
void fun(){
// your double work
}
};

template<> class MyClass<int>
{
...
T m_Var;
...
void fun()
{
// your int work
}
};

-- modified at 4:08 Thursday 20th July, 2006

Re: Templates

Michael Dunn20-Jul-06 5:55

Michael Dunn

20-Jul-06 5:55

http://www.parashift.com/c++-faq-lite/templates.html#faq-35.7

--Mike--
Visual C++ MVP Cool | :cool:

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_Begin Thread c++Query

Killer319-Jul-06 21:43

Killer3

19-Jul-06 21:43

_beginthread(void( __cdecl *start_address )( void * ),unsigned stack_size, void *arglist
);

void * arglist ==> can this point to a list of arguments.

Since the thread function can have only one parameter of void * how can i achieve the
requirement is to pass set of initialisation to the thread function.

Any body help me ?

for thendral

Re: _Begin Thread c++Query

Naveen19-Jul-06 22:00

Naveen

19-Jul-06 22:00

better u create a structure will all the set of variables u want to pass to thread. Now pass the pointer of this structure to the thread.

In the thread function, u can again convert the void* pointer to a pointer of your structure and use all the member inside it.

nave

Re: _Begin Thread c++Query

ThatsAlok21-Jul-06 4:01

ThatsAlok

21-Jul-06 4:01

R.ilan thendral wrote:
how can i achieve the
requirement is to pass set of initialisation to the thread function.

Cast any class or structure to void and recast it back from thread!

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You

game programming

ooola rocks19-Jul-06 20:57

ooola rocks

19-Jul-06 20:57

Hi,

im makin a game in VC++ 6.0 using opengl as the graphics library. i hve loaded the 2d trees and and the trees are TGA's ,which is done for transparency purpose. well my question is that when i run the program the trees do appear but after a while(50 seconds or so) the trees disappear and a grid appears where the trees were loaded once. if some one can find me the solution 2 this problem that'll b great.

Regards.

When the goin gets tough then tough gets going

Re: game programming

ThatsAlok21-Jul-06 4:01

ThatsAlok

21-Jul-06 4:01

ooola rocks wrote:
im makin a game in VC++ 6.0 using opengl as the graphics library.

you are at wrong place!,, there are many game development site you ahev to search for that!@

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You

Re: game programming

Rilhas21-Jul-06 12:30

Rilhas

21-Jul-06 12:30

From the symptoms I don't know what it might be, never happened to me! Could you provide more information? Could it be a memory leak? How is time related to the disapearence? Shouldn't it be related to the number of frames?

Propertysheet

ashish dogra19-Jul-06 20:51

ashish dogra

19-Jul-06 20:51

HI ALL
I HAVE CREATED AN DIALOG BASED APPLICATION IN WHICH I ADD TWO DIALOGS OF CHILD TYPE AND THEIR CALSSES ARE CPRO1 AND CPRO2 BOTH ARE DERIVED FROM CPROPERTYPAGE.
NOW HOW CAN I GET THESE names on tab as
----------------------------------------------
| | |
-----------|----------------|-----------------|

==============================================

and i try code as
CPro1 m_pro1;
CProp2 m_prop2;

m_propertysheet.AddPage(&m_pro1);
m_propertysheet.AddPage(&m_prop2);

m_propertysheet.m_psh.dwFlags |= PSH_NOAPPLYNOW | PSH_PROPTITLE;
m_propertysheet.m_psh.pszCaption = "Simple";
//m_propertysheet.m_psh.nStartPage = 1;

m_propertysheet.DoModal();

and can u tell me how it appear on right click

Ashish Dogra
MCA
Noida

Re: Propertysheet

toxcct19-Jul-06 21:09

toxcct

19-Jul-06 21:09

ashish dogra wrote:
HI ALL
I HAVE CREATED AN DIALOG BASED APPLICATION IN WHICH I ADD TWO DIALOGS OF CHILD TYPE AND THEIR CALSSES ARE CPRO1 AND CPRO2 BOTH ARE DERIVED FROM CPROPERTYPAGE.
NOW HOW CAN I GET THESE

what did i suggest you yesterday ?

wasn't it about stopping shouting ?

come on, i'm sure a good boy like you can do this effort... just reach the CAPS-LOCK key of your keyboard until the LOCK LED turns off Poke tongue | ;-P

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

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