Re: Escape Key - C / C++ / MFC Discussion Boards

Re: regedit

Rajesh R Subramanian10-Apr-07 23:17

Rajesh R Subramanian

10-Apr-07 23:17

deeps_cute wrote:
for this i have to add some files in regedit.

What do you mean when you tell that you need to add some files in regedit? Confused | :confused:

Nobody can give you wiser advice than yourself. - Cicero
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Escape Key

prathuraj10-Apr-07 21:57

prathuraj

10-Apr-07 21:57

I have two dialogs.In first Dialog i have a one button.When i click that button the next dialog will appear .After that i have pressed the Escape key the both dialog is closed.I want to close only the child dialog.

How to do this.plz help me?

Re: Escape Key

William.Wang10-Apr-07 22:18

William.Wang

10-Apr-07 22:18

I have two questions:1: r ur dialog boxes modal? 2: how long time did u keep pressing on the ESC key?

life is like a box of chocolate,you never know what you r going to get.

Re: Escape Key

prathuraj10-Apr-07 23:15

prathuraj

10-Apr-07 23:15

how to find model and modeless dialog

Re: Escape Key

prathuraj10-Apr-07 23:17

prathuraj

10-Apr-07 23:17

how to find model and modeless dialog

:rose:

Re: Escape Key

Parthi_Appu10-Apr-07 23:55

Parthi_Appu

10-Apr-07 23:55

prathuraj wrote:
how to find model and modeless dialog

If you used DoModel() API, for the child dialog to show it, then the child dialog is model.Instead if you used other API to show the dialog,say, ShowWindow(..),then its modeless

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Re: Escape Key

prathuraj11-Apr-07 1:32

prathuraj

11-Apr-07 1:32

i used Domodel()

Re: Escape Key

Dustin Henry11-Apr-07 8:22

Dustin Henry

11-Apr-07 8:22

By default, the escape key triggers the OnCancel() event of a modal dialog. You must override the OnCancel function in your dialog class. Example from MSDN:

void MyDialog::OnCancel() 
{
   // TODO: Add extra cleanup here
   
   // Ensure that you reset all the values back to the
   // ones before modification. This handler is called
   // when the user doesn't want to save the changes.
   
   if ( AfxMessageBox("Are you sure you want to abort the changes?", 
         MB_YESNO) == IDNO )
      return; // Give the user a chance if he has unknowingly hit the
              // Cancel button. If he says No, return. Don't reset. If
              // Yes, go ahead and reset the values and close the dialog. 

   CDialog::OnCancel();
}

Re: Escape Key

William.Wang12-Apr-07 17:01

William.Wang

12-Apr-07 17:01

OnCancel is not only called by hitting ESC key, also called by closing dialog box, for settling this, I think u may overwrite CDialog::PreTranslateMessage funcion like this.
BOOL CdlgtestDlg::PreTranslateMessage(MSG* pMsg)
{
if(pMsg->hwnd == m_hWnd || ::IsChild(m_hWnd,pMsg->hwnd) && (pMsg->message == WM_KEYDOWN || pMsg->message == WM_KEYUP))
{
if(pMsg->wParam == VK_ESCAPE)
return TRUE;
}
return CDialog::PreTranslateMessage(pMsg);
}

life is like a box of chocolate,you never know what you r going to get.

How to overwrite a file in vc++

Harish_kj10-Apr-07 21:54

Harish_kj

10-Apr-07 21:54

I have created a file which stores the employee details.
now I am trying to ovrwrite the employee details based on the input EmployeeId
given by the user using

ofstream obj(filename::ios::out);
obj<

Re: How to overwrite a file in vc++

kanduripavan12-Apr-07 7:26

kanduripavan

12-Apr-07 7:26

if the variable empName is of fixed length or upto the length that
u have to created intialise the variable value to zero of
its allocated length,
char empName[15];
//lenempName =15 or what ever its size
memset(empName, 0, sizeof (char )* lenempName );
hope it will help u.

Re: How to overwrite a file in vc++

Harish_kj13-Apr-07 3:30

Harish_kj

13-Apr-07 3:30

Thank you kanduripavan.But i had tried it before but i couldn't find any changes(Still it writes box kind of characters in the file).If you get any new idea please info me...

Thanks & regards,
Harish

How to get pixel value

vici4u10-Apr-07 21:11

vici4u

10-Apr-07 21:11

Hello,

I'm kind of a newbie in Visual C++ and I'm doing a image processing project in which I need to get specific pixel values whenever I click on a bitmap image.

I'd appreciate if you gave me some hints and code on how to do this

Thanks

Re: How to get pixel value

Try10-Apr-07 21:22

Try

10-Apr-07 21:22

I prefer u go through

CDC Class

Its a class of device-context objects.
AND
You can refer GDI+
Below an example from MSDN shows how to get pixel from bitmap.

Bitmap myBitmap(L"Climber.jpg");
// Get the value of a pixel from myBitmap.
Color pixelColor;
myBitmap.GetPixel(25, 25, &pixelColor);

The GetPixel method gets the color of a specified pixel in this bitmap.

Re: How to get pixel value

Hamid_RT10-Apr-07 21:38

Hamid_RT

10-Apr-07 21:38

If you use of CImage class you can use of GetPixel for retrieves pixles and SetPixel and SetPixelRGB for set pixles

WhiteSky

FTP Issue

Programm3r10-Apr-07 21:04

Programm3r

10-Apr-07 21:04

Hi all,

I'm busy working on a FTP client. The problem is when I send a command like 'LIST' to the server I get a response message that sates the following:

Unable to connect: No connection could be made because the target machine actively refused it.

Can anyone please help me ??
Many Thanks.
Regards,

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

Programm3r
My Blog: ^_^

Re: FTP Issue

Try10-Apr-07 21:14

Try

10-Apr-07 21:14

Check out if firewall is stopping it.
If not, check out address used by client and server are same.

Re: FTP Issue [modified]

Programm3r10-Apr-07 22:00

Programm3r

10-Apr-07 22:00

DestinyDrive wrote:
Check out if firewall is stopping it.

I turned off the Windows Firewall for both the Server and Client.

DestinyDrive wrote:
If not, check out address used by client and server are same

A connection is made, the problem occures when a command is sent.

Thank you for the reply.
Regards,

-- modified at 5:27 Wednesday 11th April, 2007

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

Programm3r
My Blog: ^_^

Re: FTP Issue

cp987611-Apr-07 3:26

cp9876

11-Apr-07 3:26

Use another FTP program to check that the Server and the connection are working correctly. Once you have confirmed that they are working, run something like ethereal to sniff the packets to check that you are sending the same requests that the working FTP program does. The same requests should elicit the same response.

Peter

"Until the invention of the computer, the machine gun was the device that enabled humans to make the most mistakes in the smallest amount of time."

Re: FTP Issue

Programm3r11-Apr-07 23:38

Programm3r

11-Apr-07 23:38

Thank you for the reply cp9876.

It seems like the problem setting the Passive Mode. By default I set it to zero, but after setting it to 1, it works.

Wikipedia:

In active mode, the FTP client opens a random port (> 1023), sends the FTP server the random port number on which 
it is listening over the control stream and waits for a connection from the FTP server. When the FTP server initiates 
the data connection to the FTP client it binds the source port to port 21 on the FTP server.

In passive mode, the FTP Server opens a random port (> 1023), sends the FTP client the server's IP address to connect
to and the port on which it is listening (a 16 bit value broken into a high and low byte) over the control stream and 
waits for a connection from the FTP client. In this case the FTP client binds the source port of the connection to a 
random port greater than 1023.

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

Programm3r
My Blog: ^_^

windows volume

vimarsh puneet10-Apr-07 19:13

vimarsh puneet

10-Apr-07 19:13

how can i set or change windows volume?

Re: windows volume

prasad_som10-Apr-07 19:18

prasad_som

10-Apr-07 19:18