Re: How to count items in list view control and select default value in combo box - C / C++ / MFC Discussion Boards

Re: How to count items in list view control and select default value in combo box

amitmistry_petlad 26-Dec-06 2:06

26-Dec-06 2:06

thank you ,gives the count value zero when i debug it.
will it work for listview?
i am not sure but i think it is for listbox not for listview control.
because the listview has some columns so i think we have to find the column number first and then we have to count the items.is it?
do you have any artical on the base of list view count items ? or link?

amit

Re: How to count items in list view control and select default value in combo box

prasad_som26-Dec-06 2:16

prasad_som

26-Dec-06 2:16

amitmistry_petlad wrote:
am not sure but i think it is for listbox not for listview control

Yes it is.
For list view , you can use,

SendMessage(hView,LVM_GETITEMCOUNT ,0,0);

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

Re: How to count items in list view control and select default value in combo box

amitmistry_petlad 26-Dec-06 2:38

amitmistry_petlad

26-Dec-06 2:38

still gives the zero value, after adding files in the listview
here is the code

case CBN_SELCHANGE :
int iCheck = (int)SendMessage((HWND)GetDlgItem(hDlg , IDC_COMBO1 ), CB_GETCURSEL, (WPARAM)0, (LPARAM)0);

if(iCheck !=0)
{
if(iCheck != 2)
{
uploadedFile = util.GetFile(NULL);
}
else
{
uploadedFile = util.BrowserDirectory();
if(uploadedFile != "")
uploadedFile += "\\";
}

if(uploadedFile != "")
{
//Check if the item is already added or not
HWND hwndListbox = GetDlgItem(hDlg,IDC_LIST4);
LRESULT iCount = SendMessage(hwndListbox,LVM_GETCOLUMN,0,0);
bool valid = true;
if(iCount > 0)
{
for(int i=0;i<iCount;i++)
{
WCHAR szInputFile[MAX_PATH];
SendMessage(hwndListbox,LB_GETTEXT,i,(LPARAM)szInputFile);
if(wcslen(szInputFile) > 0)
{
string sIn = util.ConvertWCHARToString(szInputFile);
if(sIn == uploadedFile)
{
valid = false;
MessageBox(hDlg,_T("This item is already added to the list."),_T("Encode"),MB_ICONINFORMATION);
break;
}
}
}

}

amit

Re: How to count items in list view control and select default value in combo box

prasad_som26-Dec-06 2:45

prasad_som

26-Dec-06 2:45

amitmistry_petlad wrote:
//Check if the item is already added or not
HWND hwndListbox = GetDlgItem(hDlg,IDC_LIST4);
LRESULT iCount = SendMessage(hwndListbox,LVM_GETCOLUMN,0,0);

It is lisbox , I guess. Then you need to use, LB_GETCOUNT wioth SendMessage.
Does list box contains some item ?

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

Re: How to count items in list view control and select default value in combo box

amitmistry_petlad 26-Dec-06 2:56

amitmistry_petlad

26-Dec-06 2:56

no,no
please dont guess list box it is list view
dont go on the varibal names and MESSAGE
e.g
hwndListbox,LB_GETTEXT

it is listview dear.

amit

Re: How to count items in list view control and select default value in combo box

prasad_som26-Dec-06 3:02

prasad_som

26-Dec-06 3:02

amitmistry_petlad wrote:
hwndListbox

Its really bad coding convention.Thats why I assumed it as list box.

I dont see any reason why ListView_GetItemCount should not work with list view, if it contains items.

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

Re: How to count items in list view control and select default value in combo box [modified]

amitmistry_petlad 27-Dec-06 3:13

amitmistry_petlad

27-Dec-06 3:13

Dear prasad,
well i am new comer in the win32 programming so sorry for asking some stupid
questions.

ListView_GetItemCount(hwndListview);
is working but now there is problem with the fetching out string from the
listview's first 0 column.

1) for string it is not supported,
2)it might support for WCHAR but when i convert it into string its not convert into string it gives ? mark at debugging time.
code :

<br />
string Utility::ConvertWCHARToString(LPCWSTR source)<br />
{<br />
	try<br />
	{<br />
		size_t len = wcslen(source) * sizeof(LPCWSTR);<br />
		char* tempOutFile = new char[len];<br />
		     WideCharToMultiByte(CP_ACP,0,source,-1,tempOutFile,(int)len,NULL,NULL);<br />
                                      //tempOutFile Give me the value ????????<br />
                                       @ the time of debugging<br />
		string s = tempOutFile;<br />
		if(tempOutFile)<br />
		{<br />
			delete[] tempOutFile;<br />
		}<br />
		return s;<br />
	}<br />
	catch(exception ex)<br />
	{<br />
		throw ex;<br />
	}<br />
}<br />
<br />

3)so i have taken char buff[500],
for that it works fine, but when it convert into string(buff_input) it gives first char and terminate .
i also knew the reason for that i have remark when i had debug the code
in char buffer it show me the null(0) value after every character.
like e.g buff[0] | a
buff[1] | 0
buff[2] | b
buff[3] | 0
buff[4] | c

means @ all the odd position it gives me the null so the string will terminate
immidate after buff[1] so it shows first character only when convert into string

ListView_GetItemText(hwndListview,i,0,(LPWSTR)&buff,MAX_PATH);
std::string buff_input(buff);

which one is suitable (1),(2),(3)? give me the guide line master

-- modified at 9:19 Wednesday 27th December, 2006

Re: How to count items in list view control and select default value in combo box

prasad_som27-Dec-06 17:21

prasad_som

27-Dec-06 17:21

amitmistry_petlad wrote:
means @ all the odd position it gives me the null so the string will terminate
immidate after buff[1] so it shows first character only when convert into string

It is because, you are using UNICODE configuration.

amitmistry_petlad wrote:
ListView_GetItemText(hwndListview,i,0,(LPWSTR)&buff,MAX_PATH);
std::string buff_input(buff);

Modify this to,

THCAR buff[MAX_PATH]={0};
ListView_GetItemText(hwndListview,i,0,(LPWSTR)&buff,MAX_PATH);
std::wstring buff_input(buff); //wstring for wide char string

Remember, TCHAR becomes wchar_t for UNICODE and char for ANSI. And std::wstring you need to use for wide char string(which is case in UNICODE), in ANSI you need to use std::string.

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

what to use for future project VC++ or VC++.Net ?

Atul2326-Dec-06 0:41

Atul23

26-Dec-06 0:41

Hell All

I want some information about VC++.net that can we use all API in VC++6.0 in VC++.net. Is there any API which can not used in VC++.net but in VC++ 6.0.

Thanks and Regards
Atool

Atool

Re: what to use for future project VC++ or VC++.Net ?

sunit526-Dec-06 1:08

sunit5

26-Dec-06 1:08

never say die

Re: what to use for future project VC++ or VC++.Net ?

prasad_som26-Dec-06 2:04

prasad_som

26-Dec-06 2:04

Refer this[^] link.
With higher version, their is support for new functionality.

M. Atul wrote:
Is there any API which can not used in VC++.net but in VC++ 6.0.

Provided link should satisfy your query. There are some functions you use, but marked as depreceted.

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

Re: what to use for future project VC++ or VC++.Net ?

Hamid_RT26-Dec-06 7:46

Hamid_RT

26-Dec-06 7:46

Can you be more specific

WhiteSky

smtp server authentication

neha.agarwal2726-Dec-06 0:13

neha.agarwal27

26-Dec-06 0:13

I have send mail programitally using smtp...
But now i want to enhance my application
What i want to do is i want to provide authentication to smtp server...
How to do it???

Re: smtp server authentication

sunit526-Dec-06 1:01

sunit5

26-Dec-06 1:01

use smtpclient class

never say die

delete pointer

samira forooghi26-Dec-06 0:06

samira forooghi

26-Dec-06 0:06

hi every one
please tell me where do delete "achdata pointer" in this code ?

char* achData=new char[100];//where do delete this pointer?<br />
	strcpy(achData,"Hello");//this pointer must initialize out of loop<br />
<br />
	for(;;)<br />
	{<br />
		char *ch=new char[100];<br />
<br />
		strcat(ch,achData);<br />
<br />
		if(ch)<br />
		{<br />
			delete[] ch;<br />
			ch=NULL;<br />
		}<br />
	}<br />
	<br />
	if(achData)//This code will not run never<br />
	{<br />
		delete[] achData;<br />
		achData=NULL;<br />
	}

Re: delete pointer

John R. Shaw26-Dec-06 0:36

John R. Shaw

26-Dec-06 0:36

I assume this is a joke, because of the smiley face marking the problem line.
You will never get to the code that deletes "achdata" because of the infinite "for" loop.

INTP
"Program testing can be used to show the presence of bugs, but never to show their absence."Edsger Dijkstra

Re: delete pointer

ChandraRam26-Dec-06 1:14

ChandraRam

26-Dec-06 1:14

John R. Shaw wrote:
I assume this is a joke, because of the smiley face marking the problem line.

The smiley face was unintentional - a result of for( ; ; ), with the spaces removed.

Smile | :)

Re: delete pointer

John R. Shaw26-Dec-06 1:29

John R. Shaw

26-Dec-06 1:29

I should have thought of that.

Wink | ;)

Note to self: Do not answer questions before your mourning coffee.

Re: delete pointer

ChandraRam26-Dec-06 1:31

ChandraRam

26-Dec-06 1:31

John R. Shaw wrote:
your mourning coffee.

There, there... dont take it to heart. Smile | :)

Re: delete pointer

John R. Shaw26-Dec-06 1:52

John R. Shaw

26-Dec-06 1:52

INTP
"Program testing can be used to show the presence of bugs, but never to show their absence."Edsger Dijkstra

Re: delete pointer

Mark Salsbery26-Dec-06 6:08

Mark Salsbery

26-Dec-06 6:08

So was this a joke? If not then

this code is bad:

char *ch=new char[100];
strcat(ch,achData);

You haven't initialized ch before using strcat() on it.

You are in an endless for loop so your "if(achData)//This code will not run never" will
never get called.

Re: delete pointer

Mark Salsbery26-Dec-06 6:10

Mark Salsbery

26-Dec-06 6:10

Sorry about that....I just noticed John Shaw already answered about the endless loop.
Sorry John Smile | :)

Re: delete pointer

Hamid_RT26-Dec-06 6:27

Hamid_RT

26-Dec-06 6:27

use of Ignore HTML tags when you want to psot code

WhiteSky

accessing a part of a char array

Johpoke25-Dec-06 23:37

Johpoke

25-Dec-06 23:37

Im working in C++ w MFC. In my program i create a char that looks kinda like this:

char data[11] = "1101110110";

and then later in the program i have a for which reads this binary data and does certain things depending on if its a 1 or 0:

for ( short c=0; c<=10; c++ )
{
if (data[c] == 1 )
{
//do this
}

}

But it doesn't work at all, the data[c] always seems to return 0 with the if..

any ideas?

maybe theres a better way to store my binary data (which is actually a lot longer, like 64 chars) and then do things depending on 1 or 0?

thanks!

man ive gotten like loads of post errors now..

/Johannes

Re: accessing a part of a char array

Johan Pretorius25-Dec-06 23:52

Johan Pretorius

25-Dec-06 23:52

you are testing ascii values
ie.
'1' == 49

for this to work you can test
if (data[c] == 49)

or you can test
if (data[c] == '1')

Hope this helps Smile | :)

Artificial Intelligence is no match for Natural Stupidity

No one can understand the truth until he drinks of coffee's frothy goodness. ~Sheik Abd-al-Kadir

I can't always be wrong ... or can I?

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