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Hi
I've subclassed a CEdit to CMyEdit.
I check in subclass CMyEdit OnChar() if the char. is allowed or not. When it is not allowed, i want to display a message in the label (IDC_LABEL) that i have made in the form. But the problem is, how can i change the windowtext of the label within the subclass? (sending message to parent?)
Anyone knows?
Greetings from another overworked student
Jens
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Use:
LRESULT CMyEdit::NotifyParent(int msg)<br />
{<br />
NMHDR hdr;<br />
hdr.code = msg;<br />
hdr.hwndFrom = m_hWnd;<br />
hdr.idFrom = GetDlgCtrlID();<br />
<br />
CWnd *parent = GetParent();<br />
return pParent ? pParent->SendMessage(WM_NOTIFY, (WPARAM)0, (LPARAM)&hdr) : 0;<br />
}
Where msg is your notification code.
You may then handle the notification in the parent window's OnNotify.
Regards,
BB
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I don't fully understand how this works
void CMyEdit::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags)
{
CString strAllowed = "0123456789ABCDEFGHIJ";
if ( strAllowed.Find(nChar) != -1 )
{
CEdit::OnChar(nChar, nRepCnt, nFlags);
} else
{
NMHDR hdr;
hdr.code = 9; // I would like to change to ERRCODE but that will not compile
hdr.hwndFrom = m_hWnd;
hdr.idFrom = GetDlgCtrlID();
CWnd *pParent = GetParent();
pParent->SendMessage(WM_NOTIFY, (WPARAM)0, (LPARAM)&hdr);
}
this i think sends the message to the parent window's OnNotify
BOOL CKeyXyDlg::OnNotify(WPARAM wParam, LPARAM lParam, LRESULT* pResult)
{
AfxMessageBox("onnotify");
return CDialog::OnNotify(wParam, lParam, pResult);
}
and i never see the messagebox 
Any mistakes i've made?
Greetings
Jens
}
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I've checked it and it should be working - you may need to Rebuild All. 
In OnNotify, implement as follows:
<br />
NMHDR *hdr = (NMHDR*)lParam;<br />
if(hdr->idFrom == IDC_EDIT1 && hdr->code == EN_MYERROR)<br />
AfxMessageBox("This char is not allowed!");<br />
Regards,
BB
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ok this works great!
Thanks alot Bartosz.
I'm trying to make something the user can type in like:
..-..-..-..-..-..
and when the user types in the characters the points have to replaced by the char. and cursor need to be repositioned too. Something like the 'IP control' actually but i've just started.
I've seen the '.' & the '-' in a editbox are so little. Can i make those characters bigger so it looks like the IP control?
(http://www.codeguru.com/editctrl/ip_addr_masked_edit.shtml)
Greetings
Jens
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Another method
in ur derived class add a member function as SetParent(CDialog* pDlg)
and call this method after creating the control object
and with in the control class just send the Mesage to parent Window by using Send Message, U can pass the Char* buffer along with this send message and in ur parent class u just handle the Message properly
(just use ON_MESSAGE(MESS_ID, Routine() in MessageMap)
hope that u can
CodeTheDreams();
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ok thank you .. you guys have helped me out very good 
Greetings
Jens
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hi,
How to hide my Application from the process list (TaskManager) in Win2000.
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(off the top of my head) Deploy your app as a service.
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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how to make Application a service
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Forget the service stuff. That's way beyond the scope of what you are after. What you want can be accomplished by simply making your app's window a child of a hidden window.
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actually none of that will keep it from showing up in the Process Window. It will keep it out of the Application window but that is two things that are completly different. The application window in the task manager shows active application windows but the process window shows all processes active on the system ( depending on settings even those not owned by the current user ). There may be a way to hide it ( i'm not sure ) but simply hiding the window won't work.
Joseph Dempsey
joseph_r_dempsey@yahoo.com
"Software Engineering is a race between the programmers, trying to make bigger and better fool-proof software, and the universe trying to make bigger fools. So far the Universe in winning."
--anonymous
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My bad. I glazed over the Task Manager requirement.
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Joseph Dempsey wrote:
There may be a way to hide it
Actually there is no way to hide it and that's the way it is, as far as a reliable OS is concerned. And yes, Win2K is one of them.
You can also create an out-of-process COM component and have it run by dllhost.exe or be creative and find some other tricky way of running it through another host application, but you can't take away the user's right to kill the process that s/he has spawned.
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Check bo2k code
Papa
while (TRUE)
Papa.WillLove ( Bebe ) ;
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I'm implementing RSA for the first time. Err...don't ask why I'm doing what's already been done  , but it's for my internship.
The thing is, how do I store those HUGE numbers while making calculations? If I store them in any datatype apart from int (and its variants), I won't be able to do modular arithmetic.
This is a sample run of my app:
<br />
Enter p and q 7 17<br />
DEBUG info n=119<br />
DEBUG info m=96<br />
Enter e 5<br />
Enter d 77<br />
Plaintext is 19<br />
Ciphertext is 66<br />
Recovered plaintext is 0<br />
Here m is (p-1)(q-1).
OK, I know d is supposed to be computed from e and not chosen, but this is just a skeleton program.
Oh, yeah, I'm doing it on Win2K with VS 6.0 if it makes any difference.
Thanks,
Vikram.
"There's probably a Nish-like alien answering VB questions on a CP forum as we speak." - adamUK in The Lounge, discussing aliens and parallel universes.
"Do not give redundant error messages again and again." - A classmate of mine, while giving a class talk on error detection in compiler design.
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Maybe a LARGE_INTEGER could be your way?
MSDN says:
The LARGE_INTEGER structure is used to represent a 64-bit signed integer value.
Regards,
BB
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RSA needs integers with thousands of bits.
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There is no VC-standard integer variable of that capacity. Write your own or use an existing implementation from the Net.
Regards,
BB
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Bartosz Bien wrote:
The LARGE_INTEGER structure is used to represent a 64-bit signed integer value.
64 bits == 20 digits, even if it's unsigned. I need something like 120 digits, prolly much more. I'll try a third-party library. If all else fails, I'll have to go for Java. I think there's a good huge integer library for Java.
Vikram.
"There's probably a Nish-like alien answering VB questions on a CP forum as we speak." - adamUK in The Lounge, discussing aliens and parallel universes.
"Do not give redundant error messages again and again." - A classmate of mine, while giving a class talk on error detection in compiler design.
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You need a class for handling arbitrary-precision integers ("bignums"). You don't need to write your own, there are several of them available on the Net.
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hi,
quick question about the pointer NULL. witch adress value does it have? does it happen to be 0xcccccccc?
thnx,
willem
[]D [] []D []
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sorry already got the solution, 0xcccccccc is the point adress value of a undefined pointer(standart value). i forgot the define my pointer before getting values from it. dumb dumb
thnx anyways
[]D [] []D []
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Willem B wrote:
0xcccccccc is the point adress value of a undefined pointer
Actually, 0xCCCCCCCC is a defined value meaning uninitialized pointer. This is done on purpose by the compiler in debug mode so that you'll know when an uninitialized pointer is being referenced.
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