memory leak while creating multiple class objects(same class)? - C / C++ / MFC Discussion Boards

Differences between embedded and regular VC++ [modified]

JWood25-Aug-06 5:18

25-Aug-06 5:18

From people that know, are skills in VC++ translateble to the embedded / mobile version? What are the main differences?

-- modified at 11:27 Friday 25th August, 2006

A cynic is a man who, when he smells flowers, looks around for a coffin.
-H.L. Mencken

Re: Differences between embedded and regular VC++

Jun Du25-Aug-06 5:41

Jun Du

25-Aug-06 5:41

To some degree. Mobile SDK is usually only a subset of the regular SDK, with some mobile extensions.

Best,
Jun

Re: Differences between embedded and regular VC++ [modified]

JWood25-Aug-06 9:21

JWood

25-Aug-06 9:21

Thanks

A cynic is a man who, when he smells flowers, looks around for a coffin.
-H.L. Mencken

Re: Differences between embedded and regular VC++

Zac Howland25-Aug-06 6:36

Zac Howland

25-Aug-06 6:36

In general, the embedded version of the SDK is a subset of the non-embedded version. Basic C++ skills are the same, but you do have to take extra care when dealing with memory allocation and stack limitations.

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

Re: Differences between embedded and regular VC++

JWood25-Aug-06 9:21

JWood

25-Aug-06 9:21

Thanks.

A cynic is a man who, when he smells flowers, looks around for a coffin.
-H.L. Mencken

CryptEncrypt in UNICODE

sreenest25-Aug-06 3:53

sreenest

25-Aug-06 3:53

When I am using CryptEncrypt() & CryptDecrypt()functions in my VC++ project which is UNICODE, I'm getting junk values after decrypting. But when the project is _MBCS(Multibyte-character) it is working fine. Did any of you encountered this problem ?
Is there a workaround ?

Re: CryptEncrypt in UNICODE

C^hris L^osinger25-Aug-06 4:32

C^hris L^osinger

25-Aug-06 4:32

can you post the relevant parts of your code?

image processing | blogging

memory leak while creating multiple class objects(same class)?

jalsa G25-Aug-06 3:47

jalsa G

25-Aug-06 3:47

hi all,

i am creating multiple objects for the same class
like calling this function as many times.

Void CMainWindow::OpenDefaultChatwindow()
{
m_dlgChatWindow = new CChatWindow();
m_dlgChatWindow->Create(IDD_DIALOG_CHAT_WINDOW,GetDesktopWindow());
m_dlgChatWindow->SetNewParent(this);
m_dlgChatWindow->ShowWindow(SW_SHOW);
}

but when i delete the object i am able to delete only one object then it is showing memory leaks
because i created multiple same objects and deleting only one object.

How to solve this problem ?

plz help in this issue

venu

Re: memory leak while creating multiple class objects(same class)? [modified]

Cedric Moonen25-Aug-06 4:12

Cedric Moonen

25-Aug-06 4:12

Simply by deleting the previous object before creating a new one (that seems obvious):

Void CMainWindow::OpenDefaultChatwindow()
{
if (m_dlgChatWindow )
delete m_dlgChatWindow ;
m_dlgChatWindow = new CChatWindow();
m_dlgChatWindow->Create(IDD_DIALOG_CHAT_WINDOW,GetDesktopWindow());
m_dlgChatWindow->SetNewParent(this);
m_dlgChatWindow->ShowWindow(SW_SHOW);
}

-- modified at 10:12 Friday 25th August, 2006

Cédric Moonen
Software developer

Charting control [Updated - v1.1]

Re: memory leak while creating multiple class objects(same class)?

Cedric Moonen25-Aug-06 4:19

Cedric Moonen

25-Aug-06 4:19

Mmhhh, maybe I answered too fast to your question. You would like several windows opened together or just one ? If just one, see my previous post.

In the other case, you have to store all those pointers in an array and delete them afterward (or when it is needed). I suggest that you take a look at the std::vector class to store all these pointers.

Cédric Moonen
Software developer

Charting control [Updated - v1.1]

how to end process in task maneger

MikeRT25-Aug-06 3:02

MikeRT

25-Aug-06 3:02

Hi,
I want to end the EXCEL.exe process in task manager through application. Is their is any API which get the handle of process and end it .
Can anybody help me out of this problem?

Thanks:
Mike

Re: how to end process in task maneger

Hamid_RT25-Aug-06 3:12

Hamid_RT

25-Aug-06 3:12

See TerminateProcess(...)

WhiteSky

Re: how to end process in task maneger

MikeRT25-Aug-06 3:20

MikeRT

25-Aug-06 3:20

Hi,
Thanks. But can you please elaborate it in more detail?

Thanks:-
Rajiv

Re: how to end process in task maneger

Hamid_RT25-Aug-06 3:46

Hamid_RT

25-Aug-06 3:46

well you have four ways.
1-see msdn
2-a lot of articles about process
3-an article from Mr David Crow about processes
4-see here

<br />
(1)EnumProcesses(this method retrieve identifier for each process);<br />
<br />
(2)hProcess = OpenProcess(PROCESS_VM_READ | PROCESS_QUERY_INFORMATION, FALSE,process identifier);<br />
<br />
(3)TerminateProcess(hProcess ,0);<br />

I hope its good for you Smile | :)

WhiteSky

Re: how to end process in task maneger

David Crow25-Aug-06 5:15

David Crow

25-Aug-06 5:15

WhiteSky wrote:
3-an article from Mr David Crow about processes

Of the three that I've created, none of them are about terminating processes.

"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank

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

Re: how to end process in task maneger

Hamid_RT25-Aug-06 9:48

Hamid_RT

25-Aug-06 9:48

I think I see an article about processes from you,right? my purpose was it.

WhiteSky

Re: how to end process in task maneger

David Crow25-Aug-06 9:59

David Crow

25-Aug-06 9:59

WhiteSky wrote:
I think I see an article about processes from you,right?

Of the three that I've created, none of them are about terminating processes.

"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank

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

Re: how to end process in task maneger

Hamid_RT25-Aug-06 10:10

Hamid_RT

25-Aug-06 10:10

no no ,I know not terminate only about processes,ok!? Smile | :)

WhiteSky

Re: how to end process in task maneger

David Crow25-Aug-06 5:23

David Crow

25-Aug-06 5:23

See here.

"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank

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

PropertySheets

SandhyaSri25-Aug-06 2:47

SandhyaSri

25-Aug-06 2:47

Hi,

I am working with property sheets.My requirement is when I press the first tab(property page) all the controls in that page should disable.When I press the second tab,all the controls in that page should disable.
Is there any mechanism to disable all the controls in a page at a time instead of diabling each and every control of a particular page.

Thanks in advance.

Sandhya

Re: PropertySheets

David Crow25-Aug-06 2:50

David Crow

25-Aug-06 2:50

SandhyaSri wrote:
Is there any mechanism to disable all the controls in a page at a time instead of diabling each and every control of a particular page.

If the IDs of the controls were consecutive, you could just use a for loop. This is not without risks, however.

"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank

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

Re: PropertySheets

Zac Howland25-Aug-06 6:54

Zac Howland

25-Aug-06 6:54

If you will be enabling/disabling all the controls on a page fairly regularly, I would recommend writing a method to do it:

void MyClassPage::EnableAllWindows(BOOL bEnable)
{
	GetDlgItem(IDC_MYCTRL1)->EnableWindow(bEnable);
	GetDlgItem(IDC_MYCTRL2)->EnableWindow(bEnable);
	GetDlgItem(IDC_MYCTRL3)->EnableWindow(bEnable);
	...
	GetDlgItem(IDC_MYCTRLN)->EnableWindow(bEnable);
}

And just call that method as needed.

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

Loading images on control derived from MCIwnd class

RahulOP25-Aug-06 1:41

RahulOP

25-Aug-06 1:41

Hi,
I am trying to load images onto an MCI control. I studied the MCIWnd but wasnt able to find anything relevant.

Please help!!

Re: Loading images on control derived from MCIwnd class

Hamid_RT25-Aug-06 2:24

Hamid_RT

25-Aug-06 2:24

Can you be more specific Laugh | :laugh:

WhiteSky

Re: Loading images on control derived from MCIwnd class

RahulOP25-Aug-06 2:42

RahulOP

25-Aug-06 2:42

Aahh WhiteSky you are to be my saviour again!

Ok, its like this--I am designing an application to play audio files and that has a Slider. Now, using MCI,i can see a slider but i would like to customise the slider to be able to show some pic or something.

Is this even possible?

On something slightly related how does one use the slider to forward/rewind the music/video currently being played?

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