Re: CArray makes me cry !!!!!!! - Mobile Discussion Boards

Re: CArray makes me cry !!!!!!!

João Paulo Figueira5-Jul-04 10:59

João Paulo Figueira

5-Jul-04 10:59

Is m_MrOdd the same variable? By the way, you should be declaring it as:

CArray < SomeStruct, SomeStruct& > m_MrOdd;

(the second argument is a reference type).

Regards,
João Paulo Figueira
Embedded MVP

Re: CArray makes me cry !!!!!!!

Hadi Rezaee5-Jul-04 11:18

Hadi Rezaee

5-Jul-04 11:18

Hi dear João Smile | :)

And thanks alot for reply, You are the only one who helps me Smile | :)

Well, m_MrOdd is the member variable (public access) of CMyDialog class.
As you said I changed the m_MrOdd declaring to:

CArray < SomeStruct, SomeStruct& > m_MrOdd;

But I've still the problem Frown | :(

Best Regards,
Hadi

Re: CArray makes me cry !!!!!!!

João Paulo Figueira5-Jul-04 11:32

João Paulo Figueira

5-Jul-04 11:32

Can you please show the definition of SomeStruct? It may be important...

Regards,
João Paulo Figueira
Embedded MVP

Re: CArray makes me cry !!!!!!!

Hadi Rezaee5-Jul-04 11:36

Hadi Rezaee

5-Jul-04 11:36

It's the real structure:

struct OrderItems<br />
{<br />
	OrderItems(){}<br />
	OrderItems(int code, int count)<br />
	{<br />
		m_nCode = code;	<br />
		m_nCount = count;<br />
	}<br />
<br />
	int m_nCode;<br />
	int m_nCount;<br />
};

Best Regards,
Hadi

Re: CArray makes me cry !!!!!!!

João Paulo Figueira5-Jul-04 11:39

João Paulo Figueira

5-Jul-04 11:39

This is really strange because it should be working on such a simple structure (no need for complex copy semantics). Let me think a little bit...

Regards,
João Paulo Figueira
Embedded MVP

Re: CArray makes me cry !!!!!!!

João Paulo Figueira5-Jul-04 11:41

João Paulo Figueira

5-Jul-04 11:41

What is the value of GetUpperBound ?

Regards,
João Paulo Figueira
Embedded MVP

Re: CArray makes me cry !!!!!!!

Hadi Rezaee5-Jul-04 11:51

Hadi Rezaee

5-Jul-04 11:51

In Adding Function (I added 2 items to array):
GetSize() is 2, and GetUpperBound() is 1

In Using Function:
GetSize() is 0, and GetUpperBound() is -1

Best Regards,
Hadi

Re: CArray makes me cry !!!!!!!

João Paulo Figueira5-Jul-04 12:04

João Paulo Figueira

5-Jul-04 12:04

Are you absolutely sure that the functions are called in this order? By any chance are you not clearing the array between the calls? (this is weired)

Regards,
João Paulo Figueira
Embedded MVP

Re: CArray makes me cry !!!!!!!

Hadi Rezaee5-Jul-04 12:08

Hadi Rezaee

5-Jul-04 12:08

Yes, I'm sure ...
As you can see the code is so simple, and I didn't clear any item ...

Best Regards,
Hadi

Re: CArray makes me cry !!!!!!!

João Paulo Figueira5-Jul-04 11:51

João Paulo Figueira

5-Jul-04 11:51

Got it! Most of the times, we have to read MFC's source code to know whais is happening. Look:

AFX_INLINE int CArray<TYPE, ARG_TYPE>::Add(ARG_TYPE newElement)
	{ int nIndex = m_nSize;
		SetAtGrow(nIndex, newElement);
		return nIndex; }
.
.
.
template<class TYPE, class ARG_TYPE>
void CArray<TYPE, ARG_TYPE>::SetAtGrow(int nIndex, ARG_TYPE newElement)
{
	ASSERT_VALID(this);
	ASSERT(nIndex >= 0);

	if (nIndex >= m_nSize)
		SetSize(nIndex+1, -1);
	m_pData[nIndex] = newElement;
}

The code is using a reference type (ARG_TYPE) to add the objects, that you are passing as unnamed temporaries (when are these being deleted?). Try something like this:

void CMyDialog::SomeFunc1()
{
SomeStruct a(0,0);

a = SomeStruct( 1, 2 );
m_MrOdd.Add( a );

a = SomeStruct( 10, 2 );
m_MrOdd.Add( a );

a = SomeStruct( 1, 212 );
m_MrOdd.Add( a );
}

I know it looks odd, but try it.

Regards,
João Paulo Figueira
Embedded MVP

Re: CArray makes me cry !!!!!!!

Hadi Rezaee5-Jul-04 12:04

Hadi Rezaee

5-Jul-04 12:04

I tried this way:

OrderItems item(0, 0);<br />
item = OrderItems( 10, 96 );<br />
m_OrderItems.Add( item );<br />
item = OrderItems( 5, 13 );<br />
m_OrderItems.Add( item );

But ...... Frown | :(

Regards,
Hadi

Re: CArray makes me cry !!!!!!!

João Paulo Figueira5-Jul-04 12:12

João Paulo Figueira

5-Jul-04 12:12

Man, this is maddening! What SDK are you using?

Regards,
João Paulo Figueira
Embedded MVP

Re: CArray makes me cry !!!!!!!

Hadi Rezaee5-Jul-04 12:16

Hadi Rezaee

5-Jul-04 12:16

Yes I know but what can i say ? Frown | :(

I'm using eVC++ 4.0 SP3, PPC 2003 SDK, WinCE 4.2 SDK is also installed.

PS: I just stop the project, don't know what the hell is this Frown | :(

Anyway thanks alot for your time Wink | ;)

Regards,
Hadi

Re: CArray makes me cry !!!!!!!

Hadi Rezaee5-Jul-04 12:14

Hadi Rezaee

5-Jul-04 12:14

I forgot to say that i got thease warnings in compiling:

e:\windows ce tools\wce420\pocket pc 2003\mfc\include\afxtempl.h(65) : warning C4291: 'void *__cdecl operator new(unsigned int,void *)' : no matching operator delete found; memory will not be freed if initialization throws an exception<br />
        e:\windows ce tools\wce420\pocket pc 2003\mfc\include\wcealt.h(235) : see declaration of 'new'<br />
        e:\windows ce tools\wce420\pocket pc 2003\mfc\include\afxtempl.h(334) : see reference to function template instantiation 'void __cdecl ConstructElements(class OrderItems *,int)' being compiled<br />
OrderListDialog.cpp<br />
e:\windows ce tools\wce420\pocket pc 2003\mfc\include\afxtempl.h(65) : warning C4291: 'void *__cdecl operator new(unsigned int,void *)' : no matching operator delete found; memory will not be freed if initialization throws an exception<br />
        e:\windows ce tools\wce420\pocket pc 2003\mfc\include\wcealt.h(235) : see declaration of 'new'<br />
        e:\windows ce tools\wce420\pocket pc 2003\mfc\include\afxtempl.h(334) : see reference to function template instantiation 'void __cdecl ConstructElements(class OrderItems *,int)' being compiled<br />
ReportPage.cpp<br />
ShamsiDate.cpp<br />
Visitor.cpp<br />
e:\windows ce tools\wce420\pocket pc 2003\mfc\include\afxtempl.h(65) : warning C4291: 'void *__cdecl operator new(unsigned int,void *)' : no matching operator delete found; memory will not be freed if initialization throws an exception<br />
        e:\windows ce tools\wce420\pocket pc 2003\mfc\include\wcealt.h(235) : see declaration of 'new'<br />
        e:\windows ce tools\wce420\pocket pc 2003\mfc\include\afxtempl.h(334) : see reference to function template instantiation 'void __cdecl ConstructElements(class OrderItems *,int)' being compiled<br />
Generating Code...<br />
Linking...

Re: CArray makes me cry !!!!!!!

João Paulo Figueira5-Jul-04 12:21

João Paulo Figueira

5-Jul-04 12:21

This may well be the source of this problem. To diagnose it, I would have to take a look at your entire project.

Regards,
João Paulo Figueira
Embedded MVP

Re: CArray makes me cry !!!!!!!

Hadi Rezaee5-Jul-04 12:33

Hadi Rezaee

5-Jul-04 12:33

Here's the story:

class OrderItems<br />
{<br />
public:<br />
  OrderItems(){}<br />
  OrderItems(int code, int count)<br />
  {<br />
    m_nCode = code;	<br />
    m_nCount = count;<br />
  }<br />
<br />
  int m_nCode;<br />
  int m_nCount;<br />
};<br />
<br />
class CMainPage : public CPropertyPage<br />
{<br />
.<br />
.<br />
.<br />
  void UseOrders();  // Where we should read items.<br />
<br />
public:<br />
  CArray < OrderItems, OrderItems& > m_OrderItems;<br />
}

And somewhere, in one of CMainPage methods I show another dialog and i add the items in that:

void COrderListDialog::OnOK() <br />
{<br />
  CMainPage* dlgMain = (CMainPage*) GetParent();<br />
	<br />
  OrderItems item(0, 0);<br />
  item = OrderItems( 10, 96 );<br />
  dlgMain->m_OrderItems.Add( item );<br />
  item = OrderItems( 5, 13 );<br />
  dlgMain->m_OrderItems.Add( item );<br />
<br />
  CDialog::OnOK();<br />
}

And then when i back to Main form i call UseOrders() to read the items but the problem occrues Frown | :(

I hope it's clear ...

Regards,
Hadi

Re: CArray makes me cry !!!!!!!

João Paulo Figueira5-Jul-04 22:50

João Paulo Figueira

5-Jul-04 22:50

Please make sure that this:

CMainPage* dlgMain = (CMainPage*) GetParent();

does return the pointer you want. If not, all is explained...

Regards,
João Paulo Figueira
Embedded MVP

Re: CArray makes me cry !!!!!!!

Hadi Rezaee6-Jul-04 1:39

Hadi Rezaee

6-Jul-04 1:39

Yessss, That's it Big Grin | :-D

You solved the problem ! Thank you very much ! Rose | [Rose]

I changed code to this:

CAppSheet *pAppSheet = (CAppSheet *) GetParent();<br />
CMainPage *dlgMain = (CMainPage *) pAppSheet->GetPage(0);

And now it works fine ...

Best Regards,
Hadi

Re: CArray makes me cry !!!!!!!

Hadi Rezaee5-Jul-04 21:00

Hadi Rezaee

5-Jul-04 21:00

I did some new tests on the code that the results are strange too.

1- I declared m_OrderItems as a pointer variable and then use new, when i want to add items it shows me an error: "Out Of Memory.", But the program doesn't crash.

2- I used vector instead of CArray and i get same result. (No Item !)

Regards,
Hadi

return value from a register write

Mel Feik5-Jul-04 9:19

Mel Feik

5-Jul-04 9:19

Hey all, I'm working with a Phillips LPC2129 chip using a Keil compiler. In viewing the example code supplied by Keil, I noticed that they returned an 'int' from a call to a function sending a char out a UART configured as ab RS232 port.

To write to the UART the following is requiredL U1THR = <the char="" to="" be="" written="">.

The problem I have is that in the sample code provided by Keil they return that value in the 'putchar' call and I have no clue how to determine the value of the return. Moreover the manner in which a byte is written to the UART is a register write, not a function call. For example:

return( U1THR = ch );

where ch is the char to be sent. Regardless of what value ch = the return value is 'H' (0x48). I reckon my question lies in how to determine the return value of an assignment?

-any got any input on this?

---------------------------------------------
Help... I'm embedded and I can't get out!

It's amazine how simeple life can be when one get's his head out of his ass...embly

If they don't get the basic research and learning skills down then they'll end up having a very hard life (Either that or they'll become managers) - Micheal P Butler

Free IDE

monn4-Jul-04 16:05

monn

4-Jul-04 16:05

is there any free IDE for the .net compact framework?

Accessing pocket access CDB using .NET

Gobananas2-Jul-04 23:21

Gobananas

2-Jul-04 23:21

Hi,
I'm developing an application using vb.net for PDA's. How should i store the data in the pocket PC access db. .NET CF does not have classes to support this.

Re: Accessing pocket access CDB using .NET

João Paulo Figueira3-Jul-04 0:00

João Paulo Figueira

3-Jul-04 0:00

Check out InTheHand's website[^].

Regards,
João Paulo Figueira
Embedded MVP

AfterCollapse in Compact Framework

ting66830-Jun-04 21:10

ting668

30-Jun-04 21:10

HI
I would like to add AfterCollapse handler to the treeView object using compact framework. However, it seems that CF does not support aftercollaspse event handle. Is there any other ways to add this event handler?

Thanks~

Changing the BackColor of a ListViewItem

George Papadopoulos30-Jun-04 7:00

George Papadopoulos

30-Jun-04 7:00

Hi folks,

How can I change the BackColor of a ListViewItem in a ListView Control in .NET Compact Framework? I know that the ListViewItem.BackColor Property is available on "Desktop" .NET.

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