Used without being defined .... - C / C++ / MFC Discussion Boards

Re: to call GlobalAlloc

zon_cpp27-Mar-07 2:46

zon_cpp

27-Mar-07 2:46

anyhow, thank you

Zo.Naderi-Iran

Re: to call GlobalAlloc

_808627-Mar-07 3:28

_8086

27-Mar-07 3:28

This is what he wanted to know![^] D'Oh! | :doh:

----------------------------
286? WOWW! Blush | :O

Re: to call GlobalAlloc

toxcct27-Mar-07 3:44

toxcct

27-Mar-07 3:44

That's really strange... everywhere you write to me, you answer with an agressive speaking, and i get a low vote.

do you have any problem understanding what CP is for ?

if you roam here not to help anyone but to annoying people who try to help other, i really don't understand what you're here for Suspicious | :suss:

[VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

Re: to call GlobalAlloc

Mark Salsbery27-Mar-07 7:25

Mark Salsbery

27-Mar-07 7:25

DavidCrow answered your question but looking at your code, you're not allocating memory in the
loop so what are you worried about?

"If you can dodge a wrench, you can dodge a ball."

Re: to call GlobalAlloc

David Crow27-Mar-07 2:57

David Crow

27-Mar-07 2:57

zoncpp25 wrote:
do i allocate mamory (to call GlobalAlloc) in begin of loop then free it end of loop?

Yes, assuming you know how much you need before the loop starts. If not, you have no choice but to do it in the loop itself.

An alternative is to figure out a worst-case scenario (e.g., 2000 * sizeof(DWORD)) and allocate for that. While it will likely be too much most of the time, that's a whole lot cheaper (from the Memory Manager) than a ton of smaller requests.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: to call GlobalAlloc

zon_cpp27-Mar-07 20:25

zon_cpp

27-Mar-07 20:25

if i allocate memory first of loop, for example with 256 bytes in size.
then i use 128 bytes of this size, in the loop.
when i free memory end of loop, is freed memory all of the 256 bytes? or the 128 bytes?

nonce, i test "allocate & free" in the loop itself.
then i inform you the result.
thank you

Zo.Naderi-Iran

Re: to call GlobalAlloc

David Crow28-Mar-07 2:06

David Crow

28-Mar-07 2:06

zon_cpp wrote:
when i free memory end of loop, is freed memory all of the 256 bytes?

Yes.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Used without being defined ....

Programm3r26-Mar-07 23:08

Programm3r

26-Mar-07 23:08

Hi all,

I have the following structure and piece of code:

typedef struct
#ifdef SAPonOS400
RFC_ERROR_INFO_EX
#endif
{
    RFC_ERROR_GROUP  group;
    RFC_CHAR       key[33];
    RFC_CHAR       message[513];
}
RFC_ERROR_INFO_EX;

// Then I do a function call:
RFC_ERROR_INFO_EX * error_info;
RfcLastErrorEx(error_info);

But then I receive this error:

Run-Time Check Failure #3 - The variable 'error_info' is being used without
being defined.

I know what it means but, don't know how to fix it, please help.
Many thanx

Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

Re: Used without being defined ....

toxcct26-Mar-07 23:10

toxcct

26-Mar-07 23:10

what about this :

RFC_ERROR_INFO_EX* error_info <code>= NULL</code>;

[VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

Re: Used without being defined ....

Programm3r26-Mar-07 23:18

Programm3r

26-Mar-07 23:18

Wont work ...

Error:

Unhandled exception at 0x77c47631 in RFC Testing App.exe: 0xC0000005: Access violation writing location 0x00000000.

Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

Re: Used without being defined ....

_808627-Mar-07 0:20

_8086

27-Mar-07 0:20

----------------------------
286? WOWW! Blush | :O

Re: Used without being defined ....

prasad_som26-Mar-07 23:10

prasad_som

26-Mar-07 23:10

Programm3r wrote:
RFC_ERROR_INFO_EX * error_info;RfcLastErrorEx(error_info);

Modify this to,

RFC_ERROR_INFO_EX  error_info;
RfcLastErrorEx(&error_info);

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: Used without being defined ....

Programm3r26-Mar-07 23:14

Programm3r

26-Mar-07 23:14

Answer:

RfcLastErrorEx(&error_info);

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

Re: Used without being defined ....

prasad_som26-Mar-07 23:19

prasad_som

26-Mar-07 23:19

Isn't this answered here[^] ?

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: Used without being defined ....

Programm3r26-Mar-07 23:27

Programm3r

26-Mar-07 23:27

Yes it would seem to be, but you and me, properly posted the thread at the same time, it took me a couple of seconds to realize my mistake. So when i posted my thread there was no response.

Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

Re: Used without being defined ....

prasad_som26-Mar-07 23:32

prasad_som

26-Mar-07 23:32

Programm3r wrote:
So when i posted my thread there was no response.

It happens to me lot of times , while posting replies. So, usually, I do refresh forum page in separate browser window, before finally posting it. Its very likely, while you type your post, somebody post same/simlar answer. Smile | :)

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: Used without being defined ....

Programm3r26-Mar-07 23:40

Programm3r

26-Mar-07 23:40

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

custom url protocol

kamPooh26-Mar-07 22:56

kamPooh

26-Mar-07 22:56

custom url handler in MS Word kamPooh Just posted

Hi,
I register a custom url handler (abc://) in registery in HKEY_CLASSES_ROOT,
it can now work in IE if I type "abc://example" in IE URL,
it activate my stuff, but if I paste the url into MSWord,
it won't highlight as other url link. What else should I
perform in order to get my custom link highlighted in MSWord ?

Thanks

OwnerDraw

Manjunath S26-Mar-07 22:55

Manjunath S

26-Mar-07 22:55

Hi all,
Any tutorials on Ownerdraw for List view control ...

Manjunath S
GESL
Bangalore

Re: OwnerDraw

prasad_som26-Mar-07 23:25

prasad_som

26-Mar-07 23:25

Have you searched CP ?

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: OwnerDraw

Manjunath S26-Mar-07 23:37

Manjunath S

26-Mar-07 23:37

some samples are developed using .NET
I want help in win32 for Owner draw for Listview

Manjunath S
GESL
Bangalore

Re: OwnerDraw

prasad_som26-Mar-07 23:48

prasad_som

26-Mar-07 23:48

Manjunath S wrote:
I want help in win32 for Owner draw for Listview

You mean not using MFC ?

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: OwnerDraw

Manjunath S27-Mar-07 0:06

Manjunath S

27-Mar-07 0:06

In need in win32,
If any tutorials in mfc,may also help

Manjunath S
GESL
Bangalore

Re: OwnerDraw

prasad_som27-Mar-07 0:11

prasad_som

27-Mar-07 0:11

I'm not sure what you are expecting by mean of tutorial.
But, list control[^] section might be helpful to you by some mean.

Prasad
Notifier using ATL | Operator new[],delete[][^]

::CommandLineToArgvW in EVC

sheela Rajaram26-Mar-07 22:30

sheela Rajaram

26-Mar-07 22:30

i am not able to use ::CommandLineToArgvW in EVC while the samething worked in VC . I have included the necessary shellapi.h and shell32.lib ,but am still getting errors like ,

error C2039: 'CommandLineToArgvW' : is not a member of '`global namespace''
error C2065: 'CommandLineToArgvW' : undeclared identifier
error C2440: 'initializing' : cannot convert from 'int' to 'unsigned short ** '

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