C / C++ / MFC Discussion Boards

Re: Problem with Debug compiler after installing LIB files

Mark Salsbery26-Dec-06 5:53

26-Dec-06 5:53

ndfspeed1971 wrote:
1) WinTAP Program (Main program) under projects settings is:
Release and Debug mode is "Use MFC in Static Library"

For MFC extension DLLs you should use "Use MFC in Shared DLL" for the main program as well.
You may have a problem using two instances of MFC at the same time.

Extension DLLs[^]

how to code a c++ only accept digit with limit?

Member 367224126-Dec-06 3:18

Member 3672241

26-Dec-06 3:18

#include <stdio.h>

void main()
{
int n;

printf("Enter digit (0 to 100) > ");
scanf("%d", &n);

while(n < 0 || n > 100)
{
printf("Invalid! Reenter > ");
scanf("%d", &n);
}
//shows message if n != digit (ask for reenter)
printf("You had entred %d\n", n);
}

sorry, I'm new....

Re: how to code a c++ only accept digit with limit?

John R. Shaw26-Dec-06 4:43

John R. Shaw

26-Dec-06 4:43

You need to initialize the ‘n’ variable, because if the first call to ‘scanf’ fails the value will still be undefined.

How you are using ‘scanf’ will only convert digits, otherwise it failes, and you should check the return value of the function to determine if it was successful.

Your ‘while’ will not exit until a value has been enter in the required range, so there is no reason to check after the loop has exited.

If you really want to verify each digit as it is entered, then you will need to gather the digits one at a time, in to a character buffer, and call ‘isdigit’ to check each character as it is entered. After gathering digits, use ‘atoi’ to convert it to ‘int’ and then check the range. (Do not forget to make sure the character buffer ends with character ‘\0’.)

Simplified version of your code:

void main()
{
    int n = 0;

    while(n < 0 || n > 100)
   {
        printf("Enter digit (0 to 100) > ");
        scanf("%d", &n); // ignoring return value - ok here
        if(n < 0 || n > 100)
            printf("Invalid! Reenter digits >\n");
    }
}

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

Can't use Undo in Edit View

Max++26-Dec-06 3:07

Max++

26-Dec-06 3:07

I use App-Wizard to create project that derive from CEditView.(It look like NotePad).
My problem is that when the character have change by using the function for edit charactor such as CString::Delete(), CString::Insert()...
At menu Undo it isn't Active.
It look like, It don't know the character have change.

Can anyone help me for solve this problem?

Re: Can't use Undo in Edit View

prasad_som26-Dec-06 4:33

prasad_som

26-Dec-06 4:33

What function you are using to set text to edit control ?
Because, calling SetWindowText or SetHandle clears the Undo flag.

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

Re: Can't use Undo in Edit View

Max++26-Dec-06 4:46

Max++

26-Dec-06 4:46

I use SetWindowText.

Re: Can't use Undo in Edit View

Max++26-Dec-06 5:44

Max++

26-Dec-06 5:44

Please tell me if you have another way to set text to EditCtrl

Re: Can't use Undo in Edit View

prasad_som26-Dec-06 18:12

prasad_som

26-Dec-06 18:12

Use ReplaceSel, in combination with SetSel.

Edit.SetSel(0,-1);//Select whole text
Edit.ReplaceSel("PRASAD",TRUE);//second parameter is for adding action to undo

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

Re: Can't use Undo in Edit View

karle26-Dec-06 8:33

karle

26-Dec-06 8:33

use ReplaceSel instead.
This method replaces the current selection.
If you want to replace the whole text, use SelSel() before.

How to get files and folders name of windows\\system32 directory for Windows XP 64 bit OS by programming

ashtwin26-Dec-06 2:43

ashtwin

26-Dec-06 2:43

Hi All ,

I am creating the SDI application for showing the Operating system’s drive explorer tree.

This is working fine for all operating system from Win 2K to XP for 32 Bit.

But If I check it for Windows XP 64 bit operating system then It is showing strange behave , my all hierarchy of files and folders is coming properly but Files and folder of C:\windows\system32 directory are not coming properly , here it is showing the files and folders of C:\windows\systemWOW64 directory.

How to show the actual files and folder of C:\\Windows\\system32 directory ????????

I am using the following code snippet.
ShowFileFolder (CString strPath )
{
HANDLE hInstance;
BOOL bContinue=FALSE;

WIN32_FIND_DATA fatr;

int iCheck=0;
int iLocation;

if(strPath.GetAt(strPath.GetLength()-1)!='\\')
strPath=strPath+_T("\\");

if(strPath.GetLength()==3)
iCheck=1;
strPath=strPath+_T("*");

hInstance=FindFirstFile(strPath,&fatr);
do
{
bContinue=FindNextFile(hInstance,&fatr);
if(!(wcscmp(fatr.cFileName ,_T("."))==0) && !(wcscmp(fatr.cFileName,_T(".."))==0) && bContinue)
{
if(fatr.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
{
if((iLocation=strPath.ReverseFind('*'))!=-1)
strPath=strPath.Left(iLocation);
ShowFileFolder (strPath);
//AddItemToTree(strPath) ;

}
else
{
if((iLocation=strPath.ReverseFind('*'))!=-1)
strPath=strPath.Left(iLocation);

//AddItemToTree(strPath) ;
}
}

}while(hInstance && bContinue);

FindClose(hInstance);
}

ShowFileFolder (“ C:\\Windows\\system32 ”) and ShowFileFolder (“ C:\\Windows\\systemWOW64 ”) showing the same file folder hierarchy but actually both have diff file folders on Windows XP 64 bit OS

Regards

Re: How to get files and folders name of windows\\system32 directory for Windows XP 64 bit OS by programming

Michael Dunn26-Dec-06 15:55

Michael Dunn

26-Dec-06 15:55

ashtwin wrote:
my all hierarchy of files and folders is coming properly but Files and folder of C:\windows\system32 directory are not coming properly , here it is showing the files and folders of C:\windows\systemWOW64 directory

This is the correct behavior. Win64 virtualizes some parts of the file system and registry for Win32 apps for compatibility reasons. You can disable this feature by calling Wow64DisableWow64FsRedirection()

--Mike--
Visual C++ MVP Cool | :cool:

LINKS~! Ericahist | PimpFish | CP SearchBar v3.0 | C++ Forum FAQ

Ford, what's this fish doing in my ear?

Re: How to get files and folders name of windows\\system32 directory for Windows XP 64 bit OS by programming

ashtwin26-Dec-06 23:26

ashtwin

26-Dec-06 23:26

Thanks it is working correctly now.

UDP multicast problem

eli1502197926-Dec-06 2:21

eli15021979

26-Dec-06 2:21

Hi,

I need to add a UDP multicast ability to my application.
The problem is that i can send data to the other computers in my group,
but i can't get data from the other computers.

Where can I find a good example for UDP multicast?
I tried googling but can't find a good example.

With best regards,
Eli D'Oh! | :doh:

Re: UDP multicast problem

Mark Salsbery26-Dec-06 5:58

Mark Salsbery

26-Dec-06 5:58

How are you trying to "get data from the other computers"?
Are they sending multicast packets as well?

Stopping user interaction from dialogs. How ?

Sakthiu26-Dec-06 1:31

Sakthiu

26-Dec-06 1:31

Dear All,

I want to stop user interaction with dialogs.

How can i do this ?

Thanks.

bye.

Re: Stopping user interaction from dialogs. How ?

prasad_som26-Dec-06 2:05

prasad_som

26-Dec-06 2:05

What do you want to achieve ,exactly ?

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

Re: Stopping user interaction from dialogs. How ?

Sakthiu26-Dec-06 2:16

Sakthiu

26-Dec-06 2:16

Hi.,

I am doing a remotly managable program. There I want to manage a dialog application that is at client side. Client application having some buttons, menu and all.

I want to disable application window interaction from user so as to user can not modify any changes on that application dialog.

But it shows the status or some stable text. thats it.

Bye.

Re: Stopping user interaction from dialogs. How ?

prasad_som26-Dec-06 2:25

prasad_som

26-Dec-06 2:25

Sakthiu wrote:
I want to disable application window interaction from user so as to user can not modify any changes on that application dialog.

But it shows the status or some stable text. thats it.

Whats problem then ? If you are showing information as text.
If you are worried about buttons to be clicked( I'm not sure, if they are there), you can always handle them.

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

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

amitmistry_petlad 26-Dec-06 0:54

amitmistry_petlad

26-Dec-06 0:54

i have two questions.
Confused | :confused:

1)I need to count the items in the list view.

in my project i opened the file dialog and that selected file is display in the
listview if the same file is selected it gives message of duplication of file.

2)i want to set the default value in combo box.

i am using win32 in .net enviorment.

thanks with Rose | [Rose]

amit

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

prasad_som26-Dec-06 1:45

prasad_som

26-Dec-06 1:45

amitmistry_petlad wrote:
1)I need to count the items in the list view.

Use ,

SendMessage( (HWND) hWnd, LB_GETCOUNT,  0,0);

amitmistry_petlad wrote:
2)i want to set the default value in combo box.

I'm not sure, what you want to do ?

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 2:06

amitmistry_petlad

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

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