mailslot in mfc() - C / C++ / MFC Discussion Boards

Re: Transferring Data from a Dialog to a SDI View

jhwurmbach26-Jul-07 3:36

26-Jul-07 3:36

From the following Dialog, I read m_Name and use it in my Program.

MyDlg.h
// MyDlg dialog

class MyDlg : public CDialog
{
DECLARE_DYNAMIC(MyDlg)

public:
MyDlg(CWnd* pParent = NULL); // standard constructor
virtual ~MyDlg();

// Dialog Data
enum { IDD = IDD_MY_DLG };

protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support

DECLARE_MESSAGE_MAP()
public:
// Control of the Name Edit-Field
CEdit c_Name;
// The name string
CString m_Name;
};

----------------------------------------------------------------------------
Mydlg.cpp
// MyDlg.cpp : implementation file
//

#include "stdafx.h"
#include "MyDlg.h"

// MyDlg dialog

IMPLEMENT_DYNAMIC(MyDlg, CDialog)
MyDlg::MyDlg( CWnd* pParent /*=NULL*/)
: CDialog( MyDlg::IDD, pParent)
, m_Name( _T(""))
{
}

MyDlg::~MyDlg()
{
}

void MyDlg::DoDataExchange( CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
DDX_Control( pDX, IDC_NAME, c_Name);
DDX_Text(pDX, IDC_NAME, m_Name);
}

BEGIN_MESSAGE_MAP(MyDlg, CDialog)
END_MESSAGE_MAP()

Failure is not an option - it's built right in.

Re: Transferring Data from a Dialog to a SDI View

CrocodileBuck26-Jul-07 3:45

CrocodileBuck

26-Jul-07 3:45

Hi jhwurmbach,

thx for your help !
But How do you use the strName in your Code ?
When you press ok on your Dlg...

regards
CB

Re: Transferring Data from a Dialog to a SDI View

CrocodileBuck26-Jul-07 3:51

CrocodileBuck

26-Jul-07 3:51

Hi,

i solved it in this way:

void CSDI_DLG_DatenaustauschView::OnDialog()
{
CDC *pDC = new CDC;
pDC = GetDC ();

MyDlg.DoModal ();
pDC->TextOut(100,100,MyDlg.m_strEdit);
}

regards
CB

why the dialog would closed?

kcynic26-Jul-07 2:42

kcynic

26-Jul-07 2:42

I have a dialog-based project.I don't know why when I press Enter the dialog would hide?
There is no button with IDOK as its ID;

Thanks

Re: why the dialog would closed?

Cedric Moonen26-Jul-07 3:01

Cedric Moonen

26-Jul-07 3:01

See here[^]

Cédric Moonen
Software developer

Charting control [v1.2]

Re: why the dialog would closed?

kcynic26-Jul-07 4:17

kcynic

26-Jul-07 4:17

I would have a try.
Thanks

Re: why the dialog would closed?

Hamid_RT31-Jul-07 20:56

Hamid_RT

31-Jul-07 20:56

You must override OkOn for Enter and OnCancel fo Esc buttons.

WhiteSky

mailslot in mfc()

mirraa26-Jul-07 2:41

mirraa

26-Jul-07 2:41

hi in my program
i have to write some msgs in a mailslot in one computerand i ve to read them in another computer..

the code i'm using for writing is:

handle = CreateFile("\\\\park-testbench4\\mailslot\\sample1",
GENERIC_WRITE,
FILE_SHARE_READ,
0,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
0);
if (handle == INVALID_HANDLE_VALUE)
{
printf("error in creating mailslot");
}
err = WriteFile(handle, MyMessage, sizeof(MyMessage), &numWritten, 0);

if (!err)
{
printf("error in writing");
}

if (sizeof(MyMessage) != numWritten)
printf("WriteFile did not read the correct number of bytes!\n");

park-testbench4 is my computer name..its writing fine...

and i'm using the following code to read:

handle = CreateMailslot("\\\\park-testbench4\\mailslot\\sample1",
0,
MAILSLOT_WAIT_FOREVER,
NULL);
if (handle == INVALID_HANDLE_VALUE)
{
printf("error in creating mailslot :%d",GetLastError());
}

for (;;)
{
DWORD msgSize;
BOOL err;

err = GetMailslotInfo(handle, 0, &msgSize, 0, 0);

if (!err)
{
printf("GetMailslotInfo failed");
}

if (msgSize != (DWORD)MAILSLOT_NO_MESSAGE)
{
char * buffer;

buffer = (char*) malloc(100);
if (!buffer) printf("An error getting a memory block!");
else
{
DWORD numRead;
err = ReadFile(handle, buffer, msgSize, &numRead, 0);

if (!err)
printf("ReadFile error: %d", GetLastError());

else if (msgSize != numRead)
printf("ReadFile did not read the correct number of bytes!");

else
{
printf("%s",buffer);
}

GlobalFree(buffer);
}
}
Sleep(1000);
}
}

but error is coming as Error in creating mailslot ...
why i'm getting such error only during reading...

any help..
thanx n advance..

Re: mailslot in mfc()

David Crow26-Jul-07 3:14

David Crow

26-Jul-07 3:14

mirraa wrote:
but error is coming as Error in creating mailslot ...

What is the actual error?

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

font problem in scintillawnd

mirraa26-Jul-07 1:59

mirraa

26-Jul-07 1:59

hi in my program i want to change the font to courier new so that i can type in courier new font n my scintilla window...
anyone please help me out how to change the default font of scintillawnd window...
thanx in advance....

Re: font problem in scintillawnd

Roger Broomfield26-Jul-07 2:45

Roger Broomfield

26-Jul-07 2:45

what is a "scintillawnd" ?

Re: font problem in scintillawnd

David Crow26-Jul-07 3:15

David Crow

26-Jul-07 3:15

This perhaps.

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

In place string reversal throws exception ...

dharani26-Jul-07 1:41

dharani

26-Jul-07 1:41

Hi all
I am running a piece of code and it asserts . Any ideas why so ? . I use VC++ 6.0 Dialog based application

char* one ="hello";
StrRev(one);

.....
.....

void StrRev(char *s)
{
for(char *end = s + (strlen(s) - 1); (end > s) ; --end, ++s)
{
char tmpChar = (*s);
(*s) = (*end); <---- it throws exception here ....why ?
(*end) = tmpChar;
}

}

redindian

Re: In place string reversal throws exception ...

Nemanja Trifunovic26-Jul-07 1:51

Nemanja Trifunovic

26-Jul-07 1:51

Change

dharani wrote:
char* one ="hello";

to

char one[] ="hello";

Programming Blog
utf8-cpp

Re: In place string reversal throws exception ...

#realJSOP26-Jul-07 2:11

#realJSOP

26-Jul-07 2:11

That's not very maintainable.

"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
-----
"...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001

Re: In place string reversal throws exception ...

Roger Broomfield26-Jul-07 2:58

Roger Broomfield

26-Jul-07 2:58

given that this is the C++/MFC forum, why not look at CString::MakeReverse()

Re: In place string reversal throws exception ...

#realJSOP26-Jul-07 7:32

#realJSOP

26-Jul-07 7:32

I think he was either inspired by my recent what-happened-at-the-interview stories in the lounge, or he's got an interview himself.

Re: In place string reversal throws exception ...

David Crow26-Jul-07 3:18

David Crow

26-Jul-07 3:18

dharani wrote:
(*s) = (*end); <---- it throws exception here ....why ?

Why have you not bothered to use the debugger to answer such a question? By looking at the values of those variables as the program runs, you'll no doubt see exactly what is happening, and learn a valuable lesson along the way.

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Where can I get msdn?

Chen-XuNuo26-Jul-07 1:26

Chen-XuNuo

26-Jul-07 1:26

Where can I download msdn?What I downloaded can't be setup at all.. Cry | :((