C / C++ / MFC

22-May-02 1:45

Hi All

As a newbie in C++, particularly in MFC, i'm strggling about how to pass the 2 dimensional array as parameter by reference and manipulate it through a void method. I want to pass a 4x4 two dimensional array to a method which the implementation looks like this:

void Group::GetResults(int& res[4][4])
{
	for(int i = 0 ; i < 4; i++)
	{
		res[i][i] = result[i][i];
	}
}

as you can see i want to change the values of the 2 dimensional array passed in to a local 2 dimensional array in the local class which is the result

And this is how i use it in the view class:

int tempArray[4][4]
GetResult(tempArray)

thanks for reading this.
Regard

Alexandru Savescu22-May-02 2:09

22-May-02 2:09

You can pass int** like this

void Group::GetResults (int** a, int n /* to know the size */)
{
  for (int i = 0; i < n; i++)
  {
    res[i][i] = result[i][i];
  }
}

and then use it like this:

int a[4][4];
GetResult (a);

Best regards,
Alexandru Savescu

tongc22-May-02 2:14

22-May-02 2:14

hi alex

i did the way that u guided me but this is the error that i got

E:\Documents and Settings\Administrator\My Documents\ST2\Assignment3\ass3_q1\ass3_q1View.cpp(319) : error C2664: 'GetResults' : cannot convert parameter 1 from 'int (*)[4][4]' to 'int ** '

any idea??

Cheers Smile | :)

Alexandru Savescu22-May-02 2:32

22-May-02 2:32

It compiles fine on my computer, send me a sample and I'll tell you what is wrong.

Best regards,
Alexandru Savescu

Alexandru Savescu22-May-02 2:37

22-May-02 2:37

Actually it doesn't Frown | :(

Take Joaquin advice!

Best regards,
Alexandru Savescu

Joaquín M López Muñoz22-May-02 2:34

Joaquín M López Muñoz

22-May-02 2:34

void Group::GetResults(int res[][4])
{
...
}

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

tongc22-May-02 2:46

22-May-02 2:46

it gives me error this way too! Frown | :-(

Is that how you pass 2 dimensionals array??

Joaquín M López Muñoz22-May-02 2:49

Joaquín M López Muñoz

22-May-02 2:49

I'm pretty much sure it works, cause I've tried it. Maybe you could post your code to see the differences.

PS. Do you have an extra & in the argument?

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

tongc22-May-02 3:06

22-May-02 3:06

ok here it comes

pDoc->A.GetResults(result[][4]); // this is what i follow you guide.

and this is my implementation:

void Group::GetResults(int res[][4])
{
	for(int i = 0 ; i < 4; i++)
	{
		res[i][i] = result[i][i];
	}
}

Thanks

tongc22-May-02 3:08

22-May-02 3:08

and this is error i get

E:\Documents and Settings\Administrator\My Documents\ST2\Assignment3\ass3_q1\ass3_q1View.cpp(319) : error C2059: syntax error : ']'

Thanks

Alexandru Savescu22-May-02 3:04

22-May-02 3:04

You should call it like this: pDoc->A.GetResults (result);

Best regards,
Alexandru Savescu

Best regards,
Alexandru Savescu

tongc22-May-02 3:17

COleDataSource::DoDragDrop is returning DROPEFFECT_NONE

22-May-02 3:17

oh, that's right! I didn't notice that, probaly after a busy day Smile | :)

. Thanks alot for your help Alex and Joan.

Best Regard

Abhishek Narula22-May-02 1:33

Abhishek Narula

22-May-02 1:33

I have Create a Flat tab control Lets say CFTabCtrl , Basically a Class derived from CWnd. I have also implemented Drag drop of these tabs now here is the problem,

When My MFC app has got the complete source of this CFTabCtrl, that is this class is compiled with the project, it works fine.( i m refering to COleDataSource::DoDragDrop())

On the second hand I have created another project And Created a Lib file for this CFTabCtrl, and now in my MFC app I am using this CFTabCtrl by including the lib file and ofcourse the header file of the class. Now the whole code is working fine except for that this COleDataSource::DoDragDrop() returns DROPEFFECT_NONE immdiately ..

does any one have any clue what must have went wrong ?

Abhishek Narula

"Learn to appreciate others ... World would appreciate you"

Adding app to Explorer context menu

Brigg Thorp22-May-02 1:24

Brigg Thorp

22-May-02 1:24

Hey everyone,

I am working on an application that I would like to show up on the Windows Explorer context menu. I would like it to be like WinZip, where I add a menu item, then when you click on it, it sends the files to my application file list. I assume that I have to use the Shell API, but I didn't see any articles about this. I did see some on how to add Explorer's context menu to your own file list, but nothing to go the other way. Has anyone done this before and, if so, can you point me in the right direction?

Thanks...

Brigg Thorp
Software Engineer
Timex Corporation

Re: Adding app to Explorer context menu

Sonu Kapoor22-May-02 1:42

Sonu Kapoor

22-May-02 1:42

check this:

http://www.codeproject.com/shell/shellextguide1.asp

Best Regards

Sonu

List Control

Mazdak22-May-02 1:07

Mazdak

22-May-02 1:07

I have a list control in adialog box and I want to fill one column of it with a CStringList.This is the function that I use to fill list control.

int CSHowFileDlg::FillListCtrl(CStringList * filelist)
{
	LV_COLUMN   listColumn;
	LV_ITEM     listItem;

	listColumn.mask = LVCF_FMT|LVCF_WIDTH|LVCF_TEXT|LVCF_SUBITEM;
	listColumn.fmt = LVCFMT_LEFT;
	listColumn.cx = 120;
	
	listColumn.iSubItem = 1;
	listColumn.pszText = "File Name";
	m_listCtrl.InsertColumn( 1, &listColumn );

	listItem.mask = LVIF_TEXT ;
	listItem.iSubItem = 1;

	POSITION pos = filelist->GetHeadPosition();
	for(short i = 0 ; i < filelist->GetCount() ; i++ )
	{
		listItem.iItem = i;
		listItem.pszText = (LPSTR)(filelist->GetAt((pos++))).GetString();

		m_listCtrl.InsertItem( &listItem );
		

	}
	return 0;
}

There is no error but it show some of items correctly.Does anybody see anything wrong in this function?

Mazy

"The more I search, the more my need
For you,
The more I bless, the more I bleed
For you."The Outlaw Torn-Metallica

Re: List Control

Mazdak22-May-02 1:52

Mazdak

22-May-02 1:52

Simple...I have to change GetAt(pos++) to GetNext(pos) Big Grin | :-D

Mazy

"The more I search, the more my need
For you,
The more I bless, the more I bleed
For you."The Outlaw Torn-Metallica

ActiveX ToolBar

Tzoockee22-May-02 0:54

Tzoockee

22-May-02 0:54

How can I create a Toolbar that docks in Internet Explorer from an activex control that runs in Internet Explorer ?

MessageBox Problem

chen22-May-02 0:40

chen

22-May-02 0:40

Hi,

A simple MessageBox("Some errors") like this one works well.
But when i use the MessageBox(NULL, str, szMsg, MB_OK), there
is complier error. Where is my mistake?

Thanks in advance!

chen

Joaquín M López Muñoz22-May-02 0:51

Joaquín M López Muñoz

22-May-02 0:51

Your mistake is you're not providing the right argumtns. Check the docs for CWnd::MessageBox.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Zizilamoroso22-May-02 0:55

Zizilamoroso

22-May-02 0:55

I guess that the first arg cannot be NULL.

This will work:
MessageBox(strErrorText,strErrorTitle,MB_ICONSTOP|MB_OK);

[VISUAL STUDIO 6.0] [MFC] [WIN98/2]

Bluute tette! Dead | X|

chen22-May-02 0:57

chen

22-May-02 0:57

No, the compiler error is due to the four parameters
used in MessageBox. It seems that i must include some
hearder files or Lib?

chen