C / C++ / MFC Discussion Boards

kapardhi21-Apr-09 21:53

21-Apr-09 21:53

Hai!

When we develop an application in visual C++, we can verify the code by debugging, by keeping break points etc..

Now i am developing an application in embedded VC++ for a WIN CE 5.0 OS Pocket PC Device. My application uses WINSCARD library for supporting PCSC functions, why i mentioned above library is that now i cannot use Pocket PC 2003 emulator. In order to check my application i am always building the .exe , taking the .exe to the pockect PC device and running it, Now even if there is a logical mistake it takes huge time to find it .
Because i am not able to debug my code.

So is there any way so that i can debug the code in my XP operating system itself, keep break points, check the code flow etc. what i need is the application must run on the WINCE device connected to my system, but it must virtually run in my XP system ( NOTE: I cannot use emulator)

Thanks!

Re: How to debug my code ?

Cedric Moonen21-Apr-09 22:05

Cedric Moonen

21-Apr-09 22:05

Yes it is possible: you need to have your PocketPC connected to your desktop. Then when you can simply press F5. The debugger will try to connect your PocketPC and copy the file on the PocketPC.
The big problem is that it is extremly slow, that's the reason why it is always easier to debug through the emulator.

Cédric Moonen
Software developer

Charting control [v2.0 - Updated]
OpenGL game tutorial in C++

Re: How to debug my code ?

kapardhi21-Apr-09 22:13

kapardhi

21-Apr-09 22:13

Yes,
When I am pressing F5 the code is building and a status bar is comming stating "connecting to device" and then after some time i get an error message that "Timed out".
How to solve above problem ?

Assuming the device has been connected, Even if it is slow no problem, Can i debug the code from my desktop PC, can i keep break points.. etc.

Thanks!

Re: How to debug my code ?

Cedric Moonen21-Apr-09 22:29

Cedric Moonen

21-Apr-09 22:29

Do you have ActiveSync installed ? It's been a long time I didn't do that but if I remember correctly, everything was working fine for me.
Which version of Visual Studio are you using ?

Cédric Moonen
Software developer

Charting control [v2.0 - Updated]
OpenGL game tutorial in C++

Re: How to debug my code ?

kapardhi21-Apr-09 22:42

kapardhi

21-Apr-09 22:42

I am developing my application in eMbedded Visual C++ 4.0 and installed MICROSOFT ACTIVESYNC 4.5.

By the way my WIN CE device has a COM port wire and a USB wire which one shall i have to connect to my Desktop PC

I tried by connecting both of them , and then i got the "Timed out error message!!

Thanks!

how can I get Push button setfocus event

hemlat21-Apr-09 21:22

hemlat

21-Apr-09 21:22

Hi,
I have created MFC application.I am having 2 Dialog boxes.If I click "Add" button(push button) on first Dialog second dialog will open.After canceling of second dialog once again focus is coming on Add Button.At that time I need to refresh my list box,which is on first dialog.

I need to get focus of Add button.So I have created small program like this

BEGIN_MESSAGE_MAP(CMyThreadDlg, CDialog)
	ON_BN_SETFOCUS(IDC_BUTTON2, &CMyThreadDlg::OnBnSetfocusButton2)
END_MESSAGE_MAP()

void CMyThreadDlg::OnBnSetfocusButton2()
{
	// TODO: Add your control notification handler code here
	MessageBox(_T("Focus"));
}

If I click on that button focus is coming but function is not calling.Can anyone help me.

Re: how can I get Push button setfocus event

Code-o-mat21-Apr-09 22:57

Code-o-mat

21-Apr-09 22:57

Why do you need to refresh your listbox when your add button gets focus? I am just guessing but i believe what you want is to refresh your list when your second dialog is closed. If it is a modal dialog then all you need to do is refresh your list after your second dialog's DoModal returns.

void CMyThreadDlg::OnPressedAddButton()
{
  CMySecondDialog Dlg(this);
  Dlg.DoModal();
  RefreshMyListNow();
}

If you insist on the focus change maybe try using ON_BN_SETFOCUS(IDC_BUTTON2, OnBnSetfocusButton2) instead of ON_BN_SETFOCUS(IDC_BUTTON2, &CMyThreadDlg::OnBnSetfocusButton2), does that help?

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <

Re: how can I get Push button setfocus event

hemlat22-Apr-09 0:53

hemlat

22-Apr-09 0:53

Hi,
Thanks for your reply.I am calling refresh function after second dialog returns.
My code is working fine.

LPCTSTR to LPCWSTR

p_196021-Apr-09 21:15

p_1960

21-Apr-09 21:15

Hi,
i have a function which takes a parameter as LPCTSTR ie...

f1(LPCTSTR str)
{

ShellExecute(NULL, "open",str,NULL,NULL, SW_SHOWNORMAL)
}

The above function gives error like...

error C2664: 'ShellExecuteW' : cannot convert parameter 2 from 'const char [5]' to 'LPCWSTR'

pls help me out..

Re: LPCTSTR to LPCWSTR

Cedric Moonen21-Apr-09 21:22

Cedric Moonen

21-Apr-09 21:22

Use

ShellExecute(NULL, _T("open"),str,NULL,NULL, SW_SHOWNORMAL)<br />

instead. I suggest you take a look at this article[^] to get a better understanding about strings manipulation and UNICODE (this explains why you have the error).

Cédric Moonen
Software developer

Charting control [v2.0 - Updated]
OpenGL game tutorial in C++

Re: LPCTSTR to LPCWSTR

KarstenK21-Apr-09 22:15

KarstenK

21-Apr-09 22:15

the given answer is correct.

But for the future you really need to understand the difference between these string types. LPCTSTR is a macro which resolves in ANSI in 1-byte chars BUT in UNICODE in 2-byte chars. At best you take a look at the byte layout in debugger. Cool | :cool:

If you dont consider this in your work you will have a lot of annoying bugs. Dead | X|

Press F1 for help or google it.
Greetings from Germany

Re: LPCTSTR to LPCWSTR

Cedric Moonen21-Apr-09 22:24

Cedric Moonen

21-Apr-09 22:24

That's why I gave a link to an excellent article explaining all these things in detail Smile | :)

Cédric Moonen
Software developer

Charting control [v2.0 - Updated]
OpenGL game tutorial in C++

Re: LPCTSTR to LPCWSTR

David Crow22-Apr-09 6:48

David Crow

22-Apr-09 6:48

For future reference, the error you are receiving has nothing to do with f1() or its LPCTSTR parameter. The error has to do with the string literal being passed to ShellExecute().

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

creating modeless dialog

Rakesh521-Apr-09 20:32

Rakesh5

21-Apr-09 20:32

can anyone give me some link which clearly explains creating a modeless dialog box?

thanks in advance..

rakesh

Re: creating modeless dialog

Chandrasekharan P21-Apr-09 20:38

Chandrasekharan P

21-Apr-09 20:38

This should help you

Tutorial - Modeless Dialogs with MFC[^]

http://www.devarticles.com/c/a/Cplusplus/Using-MFC-in-Cplus-Dialog-Boxes/4/[^]

Re: creating modeless dialog

Hamid_RT21-Apr-09 21:04

Hamid_RT

21-Apr-09 21:04

Modeless Dialog Boxes in MFC - MFC Tutorial Part 6[^].

Of one Essence is the human race
thus has Creation put the base
One Limb impacted is sufficient
For all Others to feel the Mace
(Saadi )

NetUserChangePassword( not working under Windosw 2003 sp2

CADITC_CODER21-Apr-09 19:59

CADITC_CODER

21-Apr-09 19:59

Hi all

I have a simple change password utility that I wrote in Visual c++. It happily runs on Windows 2000, XP, and Windows 2003 sp1. Recently we upgraded to Windows 2003 sp2 and the program no longer works on that platform. It still works through XP sp2, Wind 2000 etc.

What happens is that a user will enter their username, domain name, old password and new password and this will change the password for that user. It always worked before but since Win2k3 sp2 it now retuens the error NERR_PasswordTooShort, indicating that the password does not meet complexity rules of the domain. Nothing was changed in relation to complexity rules. I had a server that was not upgraded to Win2k SP2 (still on SP1) and it worked a treat. The code snippet I use is below. Has anyone seen this issue?

Thanks fro any assistance

---------------------------code snippet-------------

nas = NetUserChangePassword(
wComputerName,
wUserName,
wOldPassword,
wNewPassword
);

if(nas != NERR_Success) {
switch ( nas ) {
case ERROR_ACCESS_DENIED:
AfxMessageBox("The user does not have access to the requested information.");
break;
case ERROR_INVALID_PASSWORD:
AfxMessageBox("The user has entered an invalid password in Old Password.");
break;
case NERR_InvalidComputer:
AfxMessageBox("The Computer name \\ Domain name is invalid.");
break;
case NERR_NotPrimary:
AfxMessageBox("The operation is allowed only on the primary domain controller of the domain.");
break;
case NERR_UserNotFound:
AfxMessageBox("The user name could not be found.");
break;
case NERR_PasswordTooShort :
AfxMessageBox("The password does not meet the password policy requirements. Check the minimum password length, password complexity and password history requirements.");

break;

default:
AfxMessageBox("Password Change Not Successful");
}

How to draw the 3D image using the StL file

DevelopmentNoob21-Apr-09 18:52

DevelopmentNoob

21-Apr-09 18:52

I'm new in VC++ 2008.
i got a CAD file which is already convert into STL file.
how do i display it as a 3D image in MFC..
Wat knowledge should i must have to handle this task?

Re: How to draw the 3D image using the StL file

Cedric Moonen21-Apr-09 21:20

Cedric Moonen

21-Apr-09 21:20

Using pure GDI, this will be very complex because GDI only draws 2D (so you'll need to make all the conversions from 3D to 2D yourself, which is probably not what you want). What you could do, is use OpenGL inside your MFC application to take care of the 3d drawing (or another graphic library like directX, but I think OpenGL is more suited to this task).

This is a rather complex task and it is impossible to answer in a single post, so my reply is a general guidelins so that you know a bit where to look. For a start, I would search for articles on CP that describes how to embedd OpenGL in an MFC application (I saw at least one such article) and then I would start to learn OpenGL. This[^] is an excellent book to learn everything you need. You can also find a free version of the book for previous version of OpenGL on the net (which are legal).

~~On the other hand, somebody perhaps wrote such a control to display an STL file, but I guess you already search for that on google and couldn't find anything.~~ Apparently you didn't because after a very quick search, I found this[^]. You could go and take a look at the implementation. Maybe there are other articles on the subject also.

Cédric Moonen
Software developer

Charting control [v2.0 - Updated]
OpenGL game tutorial in C++

use gdi+ to draw special picture

x169m21-Apr-09 17:29

x169m

21-Apr-09 17:29

I want to draw a special show picture use gdi+
but there is some question
when i use Image image(L"PIC.JPG") to load a picture
in class view OnDraw() ,There is no question about link and build

but the pictue can't show and memory wrong with a messagebox

who can help me ?
dragon.tang007@gmail.com

Re: use gdi+ to draw special picture

Hamid_RT21-Apr-09 21:12

Hamid_RT

21-Apr-09 21:12

Try like this:
Graphics graphics2(GetDC()->m_hDC);

GdiplusStartupInput gdiplusStartupInput2;
ULONG_PTR gdiplusToken2;
GdiplusStartup(&gdiplusToken2, &gdiplusStartupInput2, NULL);

Image image(L"c:\\33.bmp");
graphics2.DrawImage(&image, 100, 100);

Of one Essence is the human race
thus has Creation put the base
One Limb impacted is sufficient
For all Others to feel the Mace
(Saadi )

about SetJob().about Printer

tony_bin21-Apr-09 16:41

tony_bin

21-Apr-09 16:41

I want to control printers.
I make jobs pause .
SetJob(hPrinter,pJobStorage[i].JobId,2,(LPBYTE)(pJobStorage),JOB_CONTROL_PAUSE);
If the jobs is illegel,I delete it.
SetJob(hPrinter,pJobStorage[i].JobId,2,(LPBYTE)(pJobStorage),JOB_CONTROL_DELETE);
Else pass .
SetJob(hPrinter,pJobStorage[i].JobId,2,(LPBYTE)(pJobStorage),JOB_CONTROL_RESUME);
When it pass , SetJob() return 0 .
Value of "GetLastError()" function is 5. It means "Access is denied" .
And the jobs always pause .
How can I do .

Pre-Allocate File Storage

Hoppenfeld21-Apr-09 10:18

Hoppenfeld

21-Apr-09 10:18

All,

My program at any given time is writing up to 64 files to disk. The data is streaming in in an asynchronously to each of the files. I want to pre-allocate the space for each file on the disk to reduce file fragmentation. How do I do this?

Thanks in advance.

Re: Pre-Allocate File Storage

Stuart Dootson21-Apr-09 11:28

Stuart Dootson

21-Apr-09 11:28

Use SetFilePointer[^] to set the file pointer to the desired file size, then SetEndOfFile[^] to actually resize the file, then SetFilePointer back to the start of the file?

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Systray icon settings under Windows 7

Maxwell Chen21-Apr-09 9:16

Maxwell Chen

21-Apr-09 9:16

Under Windows 7, the design of the tray notification area is different from Windows Vista and XP. It provides the settings of "Show icon and notification", "Hide icon and notification", and "Only show notification" for each icon. Except the system built-in icons set as "Show icon and notification", all the other icons are set as "Only show notification" by default.

If a systray application is intended to launch with the property "Show icon and notification" programmatically, how to do that? Is it done by modifying some registry key? Or done by adding some flags in the source code?

Thanks!

Maxwell Chen

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