strcpy | strcat -> Errors [modified] - C / C++ / MFC Discussion Boards

Re: Problem with canc button on list box

CPallini27-Nov-06 22:08

27-Nov-06 22:08

I'm assuming your it's a MFC application.
You may override the PreTranslateMessage of your Dialog,
as in the following code snippet:

BOOL CMyDlg::PreTranslateMessage(MSG* pMsg) 
{
		
  if ( pMsg->message == WM_KEYDOWN && pMsg->wParam == VK_DELETE)
  {
    CListBox * pLB = (CListBox * )GetDlgItem(IDC_MYLIST);
    if ( pMsg->hwnd == pLB->m_hWnd)
    {
      int nCurSel = pLB->GetCurSel(); // make sure an item was selected
      if (nCurSel != LB_ERR )
      {
        pLB->DeleteString(nCurSel);
      }
      return TRUE; // message should not be dispatched 
    }
    else
    {
      // message should be dispatched
      return CDialog::PreTranslateMessage(pMsg);
    }		 
  }
  else
  {
    // message should not be dispatched
    return CDialog::PreTranslateMessage(pMsg);
  }
}

If your it is a SDK application, well, you know what modifications have to be done.

Maybe there is a more elegant solution, but, at least, that shown above works...

Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: Problem with canc button on list box

Ing.Raiz8227-Nov-06 23:33

Ing.Raiz82

27-Nov-06 23:33

Thanks.... a lot....

Giulio

Re: Problem with canc button on list box

CPallini27-Nov-06 23:56

CPallini

27-Nov-06 23:56

Di nulla.
Carlo
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: Problem with canc button on list box

David Crow27-Nov-06 4:09

David Crow

27-Nov-06 4:09

Ing.Raiz82 wrote:
...the canc button in list box?

What exactly do you mean by this? Confused | :confused:

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: Problem with canc button on list box

Ing.Raiz8227-Nov-06 5:01

Ing.Raiz82

27-Nov-06 5:01

Hi All,

I have a Dialog with a listBox, Now i want to give the user an option of deleting an entry from list by selecting it and hitting the delete key in the key board? Can Any one help me on this?

Thanks.

Re: Problem with canc button on list box

benjymous27-Nov-06 21:41

benjymous

27-Nov-06 21:41

You need to handle the key press - you can override OnVKeyToItem in your dialog

afx_msg int OnVKeyToItem(UINT nKey, CListBox* pListBox, UINT nIndex);

Something like

int CMyDlg::OnVKeyToItem(UINT nKey, CListBox* pListBox, UINT nIndex)
{
	if( nKey == VK_DELETE )
	{
		pListBox->DeleteString( nIndex );  // Remove the string from the listbox
		// Do anything else here, to delete this entry
	}

	return CDialog::OnVKeyToItem(nKey, pListBox, nIndex);
}

(You'll also have to set "Want Key Input" to true in the properties for your list box in the resources editor)

Re: Problem with canc button on list box

Ing.Raiz8227-Nov-06 21:55

Ing.Raiz82

27-Nov-06 21:55

Thank you some much...

in fact the message WM_KEYDOWN don't work... i think for the focus on the listbox...

now i try OnVKeyToItem...

thanks..

strcpy | strcat -> Errors [modified]

Programm3r27-Nov-06 3:09

Programm3r

27-Nov-06 3:09

Hi all,

I'm trying the following without success and I have no idea why Confused | :confused:

Could someone please help.
Many thanx ...

Sorry about that - miss type....

<code>
char string[100];
struct
{
 char fileStr[100];
}gList[100];
for loop
{
 // gList fileStr contains an array of file names
 strcpy((char*)string,(char*)gList[x].fileStr);
 strcat((char*)string," OK"); // Unhandled Exception
 ...
}
OUTPUT EXAMPLE: testFile.txt OK
</code>

-- modified at 9:19 Monday 27th November, 2006

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r

responseBirstring?

CPallini27-Nov-06 3:17

CPallini

27-Nov-06 3:17

can you include the declaration (and perhaps the definition...) of responseBirstring?

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: responseBirstring?

Programm3r27-Nov-06 3:34

Programm3r

27-Nov-06 3:34

I have corrected the code snippet above,

But not even this wants to work....
gBirList[x].BirfileNames would have the following in it...
ex:
file1.txt
file2.txt
file3.txt
file4.txt
file5.txt
file6.txt

<code>
loop...
 strcpy(gBirList[x].BirfileNames," OK"); // ERROR 
</code>

OUTPUT EXAMPLE:
file1.txt OK
file2.txt OK
file3.txt OK
file4.txt OK
file5.txt OK
file6.txt OK

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r

Sorry but...

CPallini27-Nov-06 22:12

CPallini

27-Nov-06 22:12

Sorry but I cannot see the declaration (and maybe the definition) of your target string yet, you are a little bit vague...
Mad | :mad:

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: strcpy | strcat -> Errors

kakan27-Nov-06 3:32

kakan

27-Nov-06 3:32

You should be able to sort it out by using the debugger.

Alcohol. The cause of, and the solution to, all of life's problems - Homer Simpson

Re: strcpy | strcat -> Errors

Programm3r27-Nov-06 3:35

Programm3r

27-Nov-06 3:35

LOL ... Now that is a KAK answer ... Obviously not...

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r

Re: strcpy | strcat -> Errors

kakan27-Nov-06 3:43

kakan

27-Nov-06 3:43

Well, what does string look like after this statement:

strcpy((char*)string,(char*)gList[x].fileStr);

And if you step into strcat, what happens in this statement:

strcat((char*)string," OK"); // Unhandled Exception

Alcohol. The cause of, and the solution to, all of life's problems - Homer Simpson

Re: strcpy | strcat -> Errors

Programm3r27-Nov-06 3:47

Programm3r

27-Nov-06 3:47

I receive the following:

First-chance exception at 0x00437842 in CompServerApp.exe: 0xC0000005: Access violation writing location 0x005c0bf8.
Unhandled exception at 0x00437842 in CompServerApp.exe: 0xC0000005: Access violation writing location 0x005c0bf8.

When I step into strcpy...

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r

Re: strcpy | strcat -&gt; Errors

kakan27-Nov-06 3:57

kakan

27-Nov-06 3:57

This works for me, I just tested it.

char string[103];
struct{
    char fileStr[100];
}gList[100];


// Init gList[0-6]
strcpy(gList[0].fileStr, "FileAtIndex0");
strcpy(gList[1].fileStr, "FileAtIndex1");
strcpy(gList[2].fileStr, "FileAtIndex2");
strcpy(gList[3].fileStr, "FileAtIndex3");
strcpy(gList[4].fileStr, "FileAtIndex4");
strcpy(gList[5].fileStr, "FileAtIndex5");
strcpy(gList[6].fileStr, "FileAtIndex6");


for (int i = 0; i < 5; i++) {
    // gList fileStr contains an array of file names
    strcpy((char*)string,(char*)gList[i].fileStr);
    strcat((char*)string," OK"); // Unhandled Exception ...
}

Are you sure your x doesn't get oout of bounds (is less than 100) ?
(Your debugger will tell you... Smile | :)

)

Alcohol. The cause of, and the solution to, all of life's problems - Homer Simpson

Re: strcpy | strcat -> Errors

benjymous27-Nov-06 4:10

benjymous

27-Nov-06 4:10

Check that none of your filenames are longer than 97 characters - any longer and your string will overflow, and random badness can happen

it'd be better if you changed your code to be

char string[MAX_PATH+4]; // space for a filename, plus " OK" plus null terminator

..

char fileStr[MAX_PATH];

MAX_PATH is defined to be the length of the longest legal filename+path in Windows

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

Re: strcpy | strcat -> Errors

David Crow27-Nov-06 4:11

David Crow

27-Nov-06 4:11

Programm3r wrote:
strcpy((char*)string,(char*)gList[x].fileStr); strcat((char*)string," OK"); // Unhandled Exception

You only have room for 99 characters, plus a nul character, in string.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: strcpy | strcat -> Errors

Programm3r27-Nov-06 4:17

Programm3r

27-Nov-06 4:17

Thank you all, found the problem...

Many thanx Smile | :)

Regards

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r

Re: strcpy | strcat -> Errors

benjymous27-Nov-06 4:25

benjymous

27-Nov-06 4:25

... which was?

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

Re: strcpy | strcat -> Errors

kakan27-Nov-06 4:29

kakan

27-Nov-06 4:29

Something that could be found easily by using the debugger, i guess...

Alcohol. The cause of, and the solution to, all of life's problems - Homer Simpson

Changing Menu Item's Font OR Bold Menu Items

Andy Rama27-Nov-06 3:02

Andy Rama

27-Nov-06 3:02

Hi to all,
How to change the font of some Menu Items using VC6?
I want to make some menu items Bold. How to do it?

Thanks & Best Regards,
Aniket Salunkhe

Re: Changing Menu Item's Font OR Bold Menu Items

Ing.Raiz8227-Nov-06 22:04

Ing.Raiz82

27-Nov-06 22:04

Visit this site...

http://www.codeproject.com/menu/

bye...

Giulio

Re: Changing Menu Item's Font OR Bold Menu Items

Andy Rama27-Nov-06 22:21

Andy Rama

27-Nov-06 22:21

I have search there. But I didn't found anything regarding Changing font of Menu Item OR Making a Menu Item Bold!

Problem with CPropertySheet class

spielehelfer27-Nov-06 2:27

spielehelfer

27-Nov-06 2:27

Hi, I've got some Problems with CPropertySheet in the development of a C++ application in emVC++.

Problem is:
I have a PropertySheet width 4 pages (all same size 260*92); but they all get cut of at the right side.
So I startet do derive a class from CPropertySheet and overwrite the OnInit Method like in this project: Free size and extended styles in CPropertySheets

This brought me a few Problems:
- the CPropertyPage* pppg = GetActivePage(); causes access violation so I changed it into CPropertyPage* pppg = GetPage(0);
(curious from outside, in the dialog class i can use GetActivePage(), inside I only get a 0x0 pointer)
- also the pppg->MapDialogRect(rcOriginal); causes access violation and all other Methods that later on uses pppg too.

This brings me down to the problem that I cannot read out the PropertyPage size on runtime and have to use fixed values to resize.

so only these lines had been left from all the code:

<br />
	BOOL bResult = CPropertySheet::OnInitDialog();<br />
	<br />
	ModifyStyleEx(0, WS_EX_TOOLWINDOW);<br />
	CRect rcModified;<br />
<br />
	//Tab<br />
	GetTabControl()->GetWindowRect(rcModified);<br />
	ScreenToClient(&rcModified);<br />
	rcModified.right +=50;<br />
	GetTabControl()->SetWindowPos( NULL, 0,0, <br />
						rcModified.Width(),<br />
						rcModified.Height(), <br />
						SWP_NOMOVE | SWP_NOOWNERZORDER | <br />
						SWP_NOZORDER | SWP_NOACTIVATE );<br />
<br />
<br />
<br />
	//Sheet<br />
	GetWindowRect(rcModified);<br />
	ScreenToClient(&rcModified);<br />
	rcModified.right +=50;<br />
	SetWindowPos( NULL, 0,0, <br />
						rcModified.Width(),<br />
						rcModified.Height(),  <br />
						SWP_NOMOVE | SWP_NOOWNERZORDER | <br />
						SWP_NOZORDER | SWP_NOACTIVATE );<br />

Anyone has an idea why I cannot acces the ActivePage() or also the work with the PropertyPage reference loaded by GetPage(0) causes access violations?

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.