Re: Passing a 2D array to a function - C / C++ / MFC Discussion Boards

System Lock

suresh_sathya21-Jan-03 0:49

suresh_sathya

21-Jan-03 0:49

Any API is there to find wheather the system is locked.

define "system is locked"

AlexO21-Jan-03 2:07

AlexO

21-Jan-03 2:07

define "system is locked"

Re: define "system is locked"

Daniel Turini21-Jan-03 6:36

Daniel Turini

21-Jan-03 6:36

In my definition, this is a locked system:

SetPriorityClass(GetCurrentProcess(), REALTIME_PRIORITY_CLASS);
int x = 0;
while (true)
  x++;

I see dumb people

Re: define "system is locked"

RobJones21-Jan-03 6:44

RobJones

21-Jan-03 6:44

yes it is..

Passing a 2D array to a function

pankajdaga21-Jan-03 0:40

pankajdaga

21-Jan-03 0:40

Hi everyone,

I have a weird problem. I have a function definition like

void SetUp(double **)

Now I have an array:
static double ERBbCoeff_22050[6][7] = {.... values...};

Now when I try to call the function SetUp(ERBbCoeff_22050), it throws the error...cannot convert parameter from double[6][7]to double**. However, I thought a 2D array could be represented as pointer to a pointer.

Obviously, I am missing something here. Anyone know what is going on? I would appreciate any help.

Thanks again,

Pankaj

Without struggle, there is no progress

Re: Passing a 2D array to a function

Dominik Reichl21-Jan-03 1:01

Dominik Reichl

21-Jan-03 1:01

Try declaring the function SetUp as:

void SetUp(double *array[7]);

And then pass the array like before:

SetUp(ERBbCoeff_22050);

-Dominik

Re: Passing a 2D array to a function

pankajdaga21-Jan-03 1:10

pankajdaga

21-Jan-03 1:10

Hi Dominik,

Nope even that did not work. I tried it before. It still says:

error C2664: 'Beat::FilterBank::SetUp' : cannot convert parameter 3 from 'double [6][7]' to 'double *[]'

This is really weird. Do not worry, I will try to find a way.

Thanks for all your help,

Pankaj

Without struggle, there is no progress

Re: Passing a 2D array to a function

Dominik Reichl21-Jan-03 1:13

Dominik Reichl

21-Jan-03 1:13

Perhaps pass the array like
SetUp(&array[0]);

This helps? Unsure | :~

-Dominik

Re: Passing a 2D array to a function

pankajdaga21-Jan-03 1:04

pankajdaga

21-Jan-03 1:04

Hi RChin,

Thanks for your reply. Your reply seems to be lost though! Unsure | :~

But it did not work. Now I get the following error,

c:\Pankaj\TestProjects\BeatDetectionNew\BeatDetection.cpp(180): error C2664: 'Beat::FilterBank::SetUp' : cannot convert parameter 3 from 'double (*__w64 )[6][7]' to 'double ** '

I always thought I could pass it as a pointer. I mean we can pass an array as a pointer Hmmm | :|

Pankaj

Without struggle, there is no progress

Re: Passing a 2D array to a function

RChin21-Jan-03 1:06

RChin

21-Jan-03 1:06

this will compile:

<br />
static double arrVar[2][2]={1,2,3,4};<br />
SetUp( &arrVar[0][0] );<br />

<br />
static double arrVar[2][2]={1,2,3,4};<br />
SetUp( arrVar[0] );<br />

if you declare the function as
void SetUp(double*)

Your function will have to know the dimentions of the given array.

However, you might have a valid reason for declaring the input parameter as a pointer to a pointer.

Re: Passing a 2D array to a function

HENDRIK R21-Jan-03 1:55

HENDRIK R

21-Jan-03 1:55

Hello,

it works if you call your function like
SetUp((double**)ERBbCoeff_22050).

Re: Passing a 2D array to a function

pankajdaga21-Jan-03 2:17

pankajdaga

21-Jan-03 2:17

hey, it works!!

Thanks a bunch! Smile | :)

Pankaj

Without struggle, there is no progress

Simple question

SatyaDY21-Jan-03 0:31

SatyaDY

21-Jan-03 0:31

Hi guys,
How to give database support to an existing MFC Project?? I have tried in the following way.

1.Inserted a new class with CRecordSet as the base class.
2.Connected to the database.
3.Included the necessary headers and declarations.

It compiling without error and warnings but when I am try to run my project it is giving "unhandled exception".
I debug the code it is stopping at m_pSet->AddNew().
Can anybody help me please ..
Regards,
Satya

can anyone help!!!!!please!!1

xxhimanshu20-Jan-03 23:36

xxhimanshu

20-Jan-03 23:36

hi all,

I am working on something where i need to change the default search page of windows. i.e. auto.search.msn.com that is just type anything on IE addressbar and if that doesn't exit it will automatically be diverted to auto.search.msn.com....now if i want to change it to google I can do that..but I am unable to change it to any other search engine or any other site...
what should I do...can anyone help me...out there..

thanks in advance..

Himanshu

HELP!!! Return between CStrings

Sunnygirl20-Jan-03 23:17

Sunnygirl

20-Jan-03 23:17

hello @all,

i have a mfc-program and two CStrings.
i would like to connect these, but everyone in its own line, e.g. they should be separated with a Return.

CString one="123";
CString two="456";
CString combination="123
456";

i posted it yesterday and somebody said, that i can use this:

combination=one+0X0A+0X0D+two;

but when i save my CString combination into a txt-file, the CString are not in its own line, there is only a 'symbol' between them.

what must i do, that the CStrings are in their own lines???

thanks
sunny

Re: HELP!!! Return between CStrings

benjymous20-Jan-03 23:20

benjymous

20-Jan-03 23:20

use "\n"

--
Help me! I'm turning into a grapefruit!

Re: HELP!!! Return between CStrings

Thomas Lau20-Jan-03 23:42

Thomas Lau

20-Jan-03 23:42

It should be :one +0X0D+0X0A+two; Smile | :)

Re: HELP!!! Return between CStrings

includeh1021-Jan-03 4:02

includeh10

21-Jan-03 4:02

why not just:
combine=one+"\r\n"+two;

includeh10

Outlook plugin using MAPI

edman20-Jan-03 23:06

edman

20-Jan-03 23:06

Hi,
I am currently developping an outlook plugin using MAPI.
I inserted a new toolbar button in the new message window of outlook.
Now when the user clicks on this button, i need to get the info from the mail he has been creating (ie: recipients email adresses , to, cc, bcc, subject and body and attachments)
In order to do that, I retrieve the IMessage object using the IExchExtCallback ::GetObject method.
The problem is that the IMessage object doesnt seem to be up to date with the info the user just typed in.
So is there any way to synchronize the IMessage object with the latest info typed in by the user, or is this not the correct way to retrieve the infos i need at all ?

Thanks for your time

View change

Mr Bose Dayala20-Jan-03 22:48

Mr Bose Dayala

20-Jan-03 22:48

Hi all,
can u please give me the name of the functionwhich will be called everytime when the view is activated when there are two views opened on a framewindow...(not belonging to View Class as I have no View classes with me and I load them from a DLL)...

thanks and regards
Thomas

ThomasKennedyBose

How can I get messages in a custom CView with a control ?

JohnMcL20-Jan-03 22:44

JohnMcL

20-Jan-03 22:44

I have a custom CView that has a CListCtrl inside and I want to handle whatever the user does in the ListCtrl in my CView class. (I think that is the appropriate MFC way besides making a custom ListCtrl, right ?)
so I put the ListView inside an tried in my CView:
direct handling in the messagemap like OnLButtonUp()
this just executes when I click outside the list.
so I tried OnChildNotify(), which is executed when I add an item in the initialisation, but that's all, never else.

Basically I just want to know if the user has clicked in the list, selected something, everything you also get in the listctrl.

Where is the correct place to handle these things ?

(I also have another view with a combo and an edit ctrl and I think, they'll give me the same problem, so a general answer to handle control messages in CViews would be nice.)

Re: How can I get messages in a custom CView with a control ?

HENDRIK R20-Jan-03 23:00

HENDRIK R

20-Jan-03 23:00

You can get notified about many things by adding an ON_NOTIFY handler to your dialog's message map. You can then handle mouse- and keyboard-events as well as control-specific envents, like LVN_COLUMNCLICK when a column of your list ctrl gets clicked.

Re: How can I get messages in a custom CView with a control ?

JohnMcL21-Jan-03 0:54

JohnMcL

21-Jan-03 0:54

It's not a dialog and so classwizard doesn't show me WM_NOTIFY when I try to add a message handler.
Does adding this manually work ?

Re: How can I get messages in a custom CView with a control ?

HENDRIK R21-Jan-03 1:17

HENDRIK R

21-Jan-03 1:17

As the control sends that message to its parent it should work. However I'm not really sure as I only tested such stuff on dialogs. Nevertheless you should try adding it manually.
But as I just saw, WM_NOTIFY is not sent by standard controls like combo boxes, edit fields etc - in contrast to list ctrl, which does.

Re: How can I get messages in a custom CView with a control ?

JohnMcL21-Jan-03 4:39

JohnMcL

21-Jan-03 4:39

It worked, I think I have to interfere with the Classwizard-done messagemap then Wink | ;)

thx

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