C / C++ / MFC

Nibu babu thomas25-Aug-08 23:24

Nibu babu thomas

25-Aug-08 23:24

polopo wrote:
My problem is,i want to show MessageBox when any one Copy file/folde from any drive(System Drive) and past into USB Drive.I have information about USB Drive like Drive Name and USB Type.Realy i need help from forum.I am new in Progrraming...

Take a look at the ICopyHook COM interface.
More on ICopyHook...[^]

Nibu babu thomas
Microsoft MVP for VC++

Code must be written to be read, not by the compiler, but by another human being.

Programming Blog: http://nibuthomas.wordpress.com

polopo26-Aug-08 0:05

polopo

26-Aug-08 0:05

i need some source code..Plz help me

singh

Sarath C26-Aug-08 0:20

Sarath C

26-Aug-08 0:20

Sample from CP[^]

-Sarath.
"Great hopes make everything great possible" - Benjamin Franklin

My blog - Sharing My Thoughts, An Article - Understanding Statepattern

polopo26-Aug-08 0:40

polopo

26-Aug-08 0:40

This is in an ALT/COM.And my rest of code in MFC.So it will work.And when i compile this code then i am geting error

error C2259: 'ATL::CComObject<Base>' : cannot instantiate abstract class

Plz help me

singh

MFC - Time control which display in 24 hour format

David Crow26-Aug-08 4:56

David Crow

26-Aug-08 4:56

polopo wrote:
...when any one Copy file/folde from any drive(System Drive) and past into USB Drive.

Are you wanting to know when a file or folder is pasted to a USB drive?

"Love people and use things, not love things and use people." - Unknown

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

Prasanth M V25-Aug-08 22:21

Prasanth M V

25-Aug-08 22:21

Friends,

In my application, i like to have UI control which can display time in 24hour or AM/PM format.
I used CDateTimeCtrl of MFC, but is is able to diplay only in AM/PM format.

Does one have ANY IDEA??? Smile | :)

Thanks,
Prasanth

Re: MFC - Time control which display in 24 hour format

Jijo.Raj25-Aug-08 22:38

Jijo.Raj

25-Aug-08 22:38

Call CDateTimeCtrl::SetFormat()[^] function. Check here[^] for the list of valid format specifiers.

In your case, for setting 24hr clock just call -

// HH stands for 24 hr and hh for 12hr
m_DateTime.SetFormat("HH:mm:ss");

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

How to decide a string is in RTF or Plain Text

CodingLover25-Aug-08 20:46

CodingLover

25-Aug-08 20:46

Hi all,

In one of my application I want to decide a string is in RTF format or Plain Text format. How can I solve it using C++

Thanks Smile | :)

I appreciate your help all the time...
CodingLover Smile | :)

Re: How to decide a string is in RTF or Plain Text

Rajesh R Subramanian25-Aug-08 20:59

Re: How to decide a string is in RTF or Plain Text

25-Aug-08 20:59

Does the RTF Specification[^] help?

Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal - Friedrich Nietzsche

.·´¯`·->Rajesh<-·´¯`·.
[Microsoft MVP - Visual C++]

CodingLover25-Aug-08 22:23

CodingLover

25-Aug-08 22:23

Thanks for the reply.

I go through the doc you send. But there is no direct way, I mean any windows API or something. Do you know such a way, something like IsTextUnicode used to identify UNICODE and ASCII?

I appreciate your help all the time...
CodingLover Smile | :)

Re: How to decide a string is in RTF or Plain Text

Rajesh R Subramanian25-Aug-08 23:28

problem using CDaoDatabase

25-Aug-08 23:28

I don't know of something like IsTextRTF(). But you can make one yourself. For instance, the specifications say that the RTF should have a Header ^, without which, the text won't be RTF.

You can search for articles on an RTF reader application and know how the header is parsed.

Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal - Friedrich Nietzsche

.·´¯`·->Rajesh<-·´¯`·.
[Microsoft MVP - Visual C++]

Prasann Mayekar25-Aug-08 20:43

Prasann Mayekar

25-Aug-08 20:43

i am using CDaoDatabase to connect to ms-access database and trying to insert records in some table.

it works fine when used through a gui thread (main thread) any number of times, but the application crashes when i try to insert a record via a worker thread after i have inserted in main thread, although all the insert queries are same and work at different times.

code snippet:
CDaoDatabase daodb;
daodb.open("D:\\test.mdb");
if(daodb.IsOpen())
{
daodb.Execute(strQuery);
daodb.close();
}

when i try to debug it gives access violation when it tries to open the database.

thanks

Re: problem using CDaoDatabase

Varghese Paul M25-Aug-08 21:30

Varghese Paul M

25-Aug-08 21:30

Hi,
To my knowledge, none of the MFC DAO classes are thread safe. You are not supposed to access DAO objects from threads other than the main GUI thread. You have to use "SendMessage" to the main APP window from the worker threads to access DAO objects in the main GUI thread.

The best alternative I would suggest is ADO which is thread-safe.

But you can try the following approaches.

1. Instead of using a worker thread, create a user interface thread by deriving a class from CWinThread and call AfxDaoInit() function from the override InitInstance method before you start using DAO objects.

or

2. Try the worker thread itself. Call AfxDaoInit() method before you start using DAO objects.

cheers
Varghese Paul

WriteFile with Vista

john563225-Aug-08 19:41

john5632

25-Aug-08 19:41

Hi,
I am again asking the same question because yesterday I was unable to login. Questio is:

I am filling some cluster of Harddisk with some data, It is running fine with all other operating system except Windows Vista.
WriteFile() function is getting fail in Vista.

I am getting errro "5-Access Denied".

Can anybody help me?

SandipG 25-Aug-08 20:03

SandipG

25-Aug-08 20:03

I read many similar problems on vista on CP and most of these file related problems had following answer.

"You require Administrator access".

Regards,
Sandip.

Rajesh R Subramanian25-Aug-08 20:11

25-Aug-08 20:11

The program must be "escalated". See:

UAC - The definitive guide[^]

Riding the Vista UAC elevator[^]

Also, search CodeProject for articles on "UAC".

Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal - Friedrich Nietzsche

.·´¯`·->Rajesh<-·´¯`·.
[Microsoft MVP - Visual C++]

Peter Weyzen26-Aug-08 0:37

Peter Weyzen

26-Aug-08 0:37

Vista is a whole new world when it comes to access rights. Back in XP and older OS you almost always could write anywhere... But, under Vista you are much more restricted!

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br />
Peter Weyzen<br />
Staff Engineer<br />
<a href="http://www.soonr.com">SoonR Inc -- PC Power delivered to your phone</a>

Mark Salsbery26-Aug-08 5:39

Mark Salsbery

26-Aug-08 5:39

Whole new world? Hardly.

These are the same rules that started with Windows 2000.

Old world rules enforced Smile | :)

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

MFC validation

samrw25-Aug-08 19:32

samrw

25-Aug-08 19:32

i want to add country validation in my dialog EDITBOX

Re: MFC validation

Rajesh R Subramanian25-Aug-08 19:33