C / C++ / MFC Discussion Boards

Re: friend,static,inline,.. recommendation

toxcct2-Nov-05 6:49

toxcct

2-Nov-05 6:49

Giorgi Moniava wrote:
now I regret that I posted

you regret it ???

D'Oh! | :doh:

i'm wonder why i'm still helping this forum...
Cry | :((

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Re: friend,static,inline,.. recommendation

ddmcr2-Nov-05 7:12

ddmcr

2-Nov-05 7:12

toxcct wrote:
i'm wonder why i'm still helping this forum...

come on tox , you know this forum needs you Big Grin | :-D

I meant that I should first try out all variants and then if did not get any results post the question , but I did it on the contrary.
That was what I regretted.

But thanks for your reply as I told you I will try what you suggested first.

"Success is the ability to go from one failure to another with no loss of enthusiasm." - W.Churchill

Re: friend,static,inline,.. recommendation

toxcct2-Nov-05 20:43

toxcct

2-Nov-05 20:43

ah, now you said it Smile | :)

have a good luck with that project sir.

ps: i may be interrested in it... is there any way to end it as an article ?

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Re: friend,static,inline,.. recommendation

ddmcr2-Nov-05 21:28

ddmcr

2-Nov-05 21:28

toxcct wrote:
ps: i may be interrested in it... is there any way to end it as an article ?

Yes there is , and maybe I will write down a fully implemented class for that with many methods and operator overloading and so on.
Tomorrow I am going to buy the book of D.Knuth so I hope to find there algorithms of implementing the arithmetic operations with high performance.
Because what I wrote till now were simple algorithms which came to my mind , but they were not bad Smile | :)

Anyway you will be first to know , if I write down this class.

"Success is the ability to go from one failure to another with no loss of enthusiasm." - W.Churchill

Re: friend,static,inline,.. recommendation

Maximilien2-Nov-05 7:08

Maximilien

2-Nov-05 7:08

Giorgi Moniava wrote:
now I regret that I posted

Why ? you got good and polite answers ( IMHO )

Imagine that in fact there was a performance gain by using friends or static member functions, we all would have learned sometihng new today.

Maximilien Lincourt
Your Head A Splode - Strong Bad

Re: friend,static,inline,.. recommendation

ddmcr2-Nov-05 7:24

ddmcr

2-Nov-05 7:24

Maximilien wrote:
Imagine that in fact there was a performance gain by using friends or static member functions, we all would have learned sometihng new today.

Maybe you are right , but it is my fault also I could not formulate my question well.I knew what inline functions were for and knew that static and friend methods were not invented for increasing the performance , but I was interested which variant would be the best in this case.
I more expected such answer that "friend or static functions decrease the performance rather than simple class member or inline methods" or smth like that , so I would not use them.
Because using friend functions the user interface of the class was easy to use but if it decreased my performance then i would not use it.
So as I said maybe I should first have tried and then posted
Anyway thanks for your replies Maximilien

"Success is the ability to go from one failure to another with no loss of enthusiasm." - W.Churchill

-- modified at 13:26 Wednesday 2nd November, 2005

Re: friend,static,inline,.. recommendation

David Crow2-Nov-05 6:19

David Crow

2-Nov-05 6:19

Giorgi Moniava wrote:
1) CString add(CString &a,CString &b)
2) CString sub(CString &a,CString &b)
3) CString mul(String &a,CString &b)
4) CString div(CString &a,CString &b)

Since you are not changing the value of a or b, add the const keyword.

"Take only what you need and leave the land as you found it." - Native American Proverb

Re: friend,static,inline,.. recommendation

Kythen2-Nov-05 11:44

Kythen

2-Nov-05 11:44

I'm sorry to diverge from your original question a bit, but I think you may be getting caught in a bit of an optimization trap. If you are worried about performace, I would address your use of strings for mathematical calculations long before worrying about whether a static, inline, friend, or global function is faster. I can't say I have ever seen a bignum library work with strings in the way you have shown. Each takes a string representation of a number, converts it to binary form, and uses that binary form for calculations. For examples, see the MIRACL[^] and Crypto++[^] libraries. If you need help with algorithms for bignum arithmetic, check out Knuth's Seminumerical Algorithms[^]

OT: floating point library

toxcct2-Nov-05 20:56

toxcct

2-Nov-05 20:56

Kythen wrote:
see the MIRACL[^] and Crypto++[^] libraries

that's quite good... but - just a guess - do you know any floating point libraries that can accept numbers bigger than a long double can ?

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Re: OT: floating point library

David Crow3-Nov-05 3:49

David Crow

3-Nov-05 3:49

Have you tried the DECIMAL data type?

"Take only what you need and leave the land as you found it." - Native American Proverb

Re: OT: floating point library

toxcct3-Nov-05 4:19

toxcct

3-Nov-05 4:19

DavidCrow wrote:
Have you tried the DECIMAL data type?

nop, not yet, but thanks for pointing it...

i'll test it

thx

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Re: OT: floating point library

Kythen3-Nov-05 6:32

Kythen

3-Nov-05 6:32

The only one I know of personally is the GNU MP Bignum Library[^]. It has arbitrary-precision floating point arithmetic capability thanks to the MPFR library[^]. I haven't used either one myself, but if you're interested in the algorithms behind it I believe the Knuth book discusses some and the MPFR page has some links.

adding bitmaps to menu items

josip cagalj2-Nov-05 3:29

josip cagalj

2-Nov-05 3:29

I need to add a bitmap to menu item, so I've done this but it doesnt work:

CMenu Menu;
Menu.LoadMenu(IDR_MAINFRAME);
DWORD size = GetMenuCheckMarkDimensions();
WORD width = LOWORD(size);
WORD high = HIWORD(size);
CBitmap Bmp;
Bmp.LoadBitmap(IDB_BITMAP_NEW_P);
Menu.SetMenuItemBitmaps(ID_NEW_PROJECT,MF_BYCOMMAND, &Bmp, &Bmp );

Help anyone? Sniff | :^)

THANKS

Josip

Re: adding bitmaps to menu items

toxcct2-Nov-05 3:41

toxcct

2-Nov-05 3:41

did you look there[^] ?

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Load Font directly from Font-File?

AskQuestion2-Nov-05 2:04

AskQuestion

2-Nov-05 2:04

Hi.
Is it possible to load a font directly from a font-file (*.ttf etc in an ordinary path) without registring the file in the system font tables (registry etc)?

thanks for the help, and good luck for your own projects

Re: Load Font directly from Font-File?

C^hris L^osinger2-Nov-05 5:21

C^hris L^osinger

2-Nov-05 5:21

see CreateScalableFontResource, AddFontResource, RemoveFontResource etc..

Cleek | Image Toolkits | Thumbnail maker

Re: Load Font directly from Font-File?

AskQuestion2-Nov-05 5:53

AskQuestion

2-Nov-05 5:53

Thanks Chris
but see
-Font files must be in the SYSTEM subdirectory of the WINDOWS directory to be used by the AddFontResource function.
-The CreateScalableFontResource function is used to install TrueType fonts
-The EnumFontFamiliesEx function enumerates all fonts in the system that match the font characteristics..

I want to load a Font directly for a *.ttf or *.fon file. This file can be everywhere ( CD..)

Never the less thank you very much for trying to help me

Re: Load Font directly from Font-File?

David Crow2-Nov-05 6:27

David Crow

2-Nov-05 6:27

AskQuestion wrote:
-Font files must be in the SYSTEM subdirectory of the WINDOWS directory to be used by the AddFontResource function.

So just copy the .fon or .ttf file(s) to the Fonts folder before calling AddFontResource().

"Take only what you need and leave the land as you found it." - Native American Proverb

Re: Load Font directly from Font-File?

C^hris L^osinger2-Nov-05 7:21

C^hris L^osinger

2-Nov-05 7:21

i don't know about .FON files, but for a .TTF file, see this Google thread[^]

Cleek | Image Toolkits | Thumbnail maker

Re: Load Font directly from Font-File?

AskQuestion11-Nov-05 23:39

AskQuestion

11-Nov-05 23:39

thx Chris
it took a while to understand, since the help in msn isn't correct. Smile | :)

AddFontResource.. really worked.
thx again, you really have been a great help

exe file

samira forooghi2-Nov-05 0:41

samira forooghi

2-Nov-05 0:41

i used the winexec function forexecute the.exe file with specified path.
but i want execute the .exe file with specified buffer of byte of .exe file.
is it posible?
please help me.

Re: exe file

David Crow2-Nov-05 2:40

David Crow

2-Nov-05 2:40

samira-samehforooghy wrote:
...with specified buffer of byte of .exe file.

Can you explain what you mean by this?

"Take only what you need and leave the land as you found it." - Native American Proverb

Re: exe file

Maximilien2-Nov-05 2:42

Maximilien

2-Nov-05 2:42

samira-samehforooghy wrote:
but i want execute the .exe file with specified buffer of byte of .exe file.

you want to have parameters to your executable ? or call a particular function in an executable ?

Maximilien Lincourt
Your Head A Splode - Strong Bad

Re: exe file

zon_cpp3-Nov-05 10:04

zon_cpp

3-Nov-05 10:04

Hello samira!
It isn't possible. because a exe file must be in a path of disk for execution ,
and don't execute a file that there isn't in disk.
good luck. Cool | :cool:

Zo.Naderi-Iran

Memory Leaks Detection

snoriani2-Nov-05 0:17

snoriani

2-Nov-05 0:17

Is it possible to detect memory leaks for a non debug version (customize/release) ?

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