C / C++ / MFC Discussion Boards

002comp11-May-09 21:40

11-May-09 21:40

Hello Friends

I want to know any book or site from where i can learn about how to use c++ in Unix operating system in details.Right now i m working in windows,but now i hv to do some project in UNix.So I want to know to get work in unix,Is any need for different Libraries or anything.
Thanks In advance.

Regards
Yogesh

Re: C++ in Unix

CPallini11-May-09 22:00

CPallini

11-May-09 22:00

Please, let me google that for you [^].
Smile | :)

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Re: C++ in Unix

Stuart Dootson11-May-09 22:14

Stuart Dootson

11-May-09 22:14

What exactly do you want to do with Linux?

Basic OS programming - that's all C, really. I'd recommend Advanced Unix Programming[^]. It may say advanced, but it starts with the basics of Unix programming!
GUIs - pick a library, any library...I'd go for Qt, because it's a nice framework, is cross-platform etc. There are lots of others available, though

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

Re: C++ in Unix

002comp11-May-09 23:24

002comp

11-May-09 23:24

Hi friend,Actually i want to go with c++ in Unix .I know basics of unix but i m not aware of creating all Dll that i did in windows.So,what will u suggest?

Thanks
Yogesh

Re: C++ in Unix

Rajesh R Subramanian11-May-09 23:31

Rajesh R Subramanian

11-May-09 23:31

I'm no unix expert, but I think the dynamic library equivalent is .SO file. A google search brought up Building and using static and shared "C" libraries.[^]

It is a crappy thing, but it's life -^ Carlo Pallini

Edit box disappears on switching tabs

vishnugupta11-May-09 21:29

vishnugupta

11-May-09 21:29

We have creating a Toolbar for IE, there is a Edit box control on toolbar. on IE launch and new tab launch this edit box appears in the toolbar but when we switches tab than it is disappeared, also on clicking location of edit box it appears again.

gud day!!!
Vishnu Gupta

Creating a PPPoE connection

Krylik11-May-09 21:27

Krylik

11-May-09 21:27

Hi All,

Ive spent the last 3 days looking for a way to dial a PPPoE connection using c++ (without having to implement the protocols myself). Ive heard that you can use something already in most linux distro's to create them quite easily, but im at a loss when trying to find information about it. Also, dialing it in windows? Is there any way without having to handle the ppp stack and everything yourself?

Any help would be appreciated.

Re: Creating a PPPoE connection

led mike12-May-09 4:27

led mike

12-May-09 4:27

Don't know about Linux but for Windows this might help[^]

Activating Menu Options

prithaa11-May-09 21:04

prithaa

11-May-09 21:04

Hello,

I have a menu and the menu Ids are made in the String Table but still the menu items are not activated even when I have not given grayed/inactive in the menu option.

How do I make the menu item active?

Priya

Re: Activating Menu Options

«_Superman_»11-May-09 21:21

«_Superman_»

11-May-09 21:21

With MFC, you have to specify a handler for each menu.
MFC disables any menu item with which a handler is not associated.

«_Superman_»
I love work. It gives me something to do between weekends.

Re: Activating Menu Options

prithaa11-May-09 23:21

prithaa

11-May-09 23:21

Hello,

Thanks for your reply

But I have a handler in MainFrame in OnCommand(WPARAM wParam, LPARAM lParam)

Priya

Re: Activating Menu Options

David Crow12-May-09 2:54

David Crow

12-May-09 2:54

Have you added the ON_UPDATE_COMMAND_UI() macro in the appropriate message map?

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Pointers

durban211-May-09 20:03

durban2

11-May-09 20:03

There are two pointers, both points on controls of type
IDC_DATETIMEPICKER.
COleDateTime* pIN = (COleDateTime*)
GetDlgItem(IDC_DATETIMEPICKER1);

The second control is on another dialog window
COleDateTime* pDest = (COleDateTime*)
(m_pParent->GetDlgItem(IDC_DATETIMEPICKER1));
The first pointer to point date ’27.05.1953’
How do with help the second pointer receive date ’27.05.1953’ ?
Thank you.

Re: Pointers

Cedric Moonen11-May-09 20:16

Cedric Moonen

11-May-09 20:16

Is this your real code ? Because you cannot cast a CDateTimeCtrl (which is the control on your dialog) to a COleDateTime. You can't do something like that, you will end up will something totally invalid (it strange that it didn't even crash). So, cast it to a CDateTimeCtrl instead of a COleDateTime.

Cédric Moonen
Software developer

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

DATETIMEPICKER

durban211-May-09 19:59

durban2

11-May-09 19:59

There is control on the dialog window
DDX_DateTimeCtrl(pDX, IDC_DATETIMEPICKER1, m_date);
COleDateTime m_date;
CString m_sBD;
m_sBD have format ‘dd.mm.yyyy’
for example m_sBD = L”19.05.1849”;
How do show date into control
that identifier is IDC_DATETIMEPICKER1?

Re: DATETIMEPICKER

Stuart Dootson11-May-09 20:27

Stuart Dootson

11-May-09 20:27

If dd.mm.yyyy was the date format in your regional settings, you could just do this:

m_Date = COleDateTime(m_sBD);
UpdateData(FALSE);

If not, you need to parse the string yourself:

int year, month, day;
_tscanf((LPCTSTR)m_sBD, "%d.%d.%d", &day, &month, &year);
m_Date = COleDateTime(year, month, day);
UpdateData(FALSE);

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

Re: DATETIMEPICKER

Cedric Moonen11-May-09 20:34

Cedric Moonen

11-May-09 20:34

I didn't know that you could associate a COleDateTime variable with a CDateTimePicker but after testing it, it seems possible.

So, what you will need to do is set the new date in your m_date object and then update your dialog to show the changes.
The first step can be done by calling COleDateTime::ParseDateTime[^]

The second step can be done by calling UpdateData(FALSE) in your dialog class.

Cédric Moonen
Software developer

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

How to figure out the port number of a device?

Syamlal S Nair11-May-09 19:57

Syamlal S Nair

11-May-09 19:57

Hi,

I have a USB device (SDM modem) that uses a usb port to connect to a computer running any version of windows. I want to be able to figure out what port the device is on and read information from it. Which is the Windows API i need to use? In device manager, it gets listed with name as "USB COM Port (COMX)", where X is the COM port number available.

Thanks in advance,

SYAMLAL

Re: How to figure out the port number of a device?

Cedric Moonen11-May-09 20:41

Cedric Moonen

11-May-09 20:41

SyamlalS wrote:
"USB COM Port (COMX)"

So, your USB device is USB-to-serial device ? If yes, you will need to retrieve the COM port number from the registry (but I never did that myself , so I can't really help there), and then you can open it like any other COM port (CreateFile, ReadFile, WriteFile, ... ). Then of course you need to know the protocol that your device is using (so, what to send,...)

If it is not a virtual COM port, the procedure is a bit different.

Cédric Moonen
Software developer

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

Re: How to figure out the port number of a device?

Syamlal S Nair11-May-09 21:09

Syamlal S Nair

11-May-09 21:09

Hi, I just need to know the number X in COMX. That is sufficient for me to go further. I guess, there will be APIs to fetch the number from this particular string in device manager!!

SYAMLAL

Re: How to figure out the port number of a device?

CPallini11-May-09 21:26

CPallini

11-May-09 21:26

What about the 'trial and error' experimental approach (iterate on ports, trying to open them and start communicating with your device)? It might not work if there are bad-behaving-virtual-COM-drivers on your system, though.
Smile | :)

Re: How to figure out the port number of a device?

klau2k11-May-09 22:07

klau2k

11-May-09 22:07

The fastest method is to read from registry -> [HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\SERIALCOMM]

two dialog window and variable

durban211-May-09 19:54

durban2

11-May-09 19:54

Into event NM_CLICK
Of modal dialog window chose row into control CListCtrl
int row; For example row = 6;
Modeless window is opened. In event WM_LBUTTONDOWN
( on surface of modeless) set:
CMainDlg2 dlgModal; // modal
m_sWorkModeless.Format(L"row = %d",dlgModal.row);
MessageBox(m_sWorkModeless);
Result: row = 0 , but must be = 6
How to receive 6?

Re: two dialog window and variable

Stuart Dootson11-May-09 20:23

Stuart Dootson

11-May-09 20:23

durban2 wrote:
CMainDlg2 dlgModal; // modal
m_sWorkModeless.Format(L"row = %d",dlgModal.row);
MessageBox(m_sWorkModeless);

In that code sample, the modal dialog's done no work, so its row member will still be as constructed - maybe you need a dlgModal.DoModal(); before you read the row?

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

How do I wrap text in Editbox?

SherTeks11-May-09 19:04

SherTeks

11-May-09 19:04

Hello,

I have embedded an Edit box in my dialog during design time with styles 'Multiline', 'Horizontal
Scroll' and 'Vertical Scroll'.

During runtime, I set text to this edit box with SetWindowText. The set text extends the
dimensions of the edit box and so I want the text to be wrapped dynamically.

How could I achieve this ?

Note : I also tried changing the styles to 'Auto HScroll',
'Auto VScroll', etc.

Thanks in advance.

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