C / C++ / MFC Discussion Boards

rahulv25-Mar-03 5:43

25-Mar-03 5:43

Hi!

I was wondering if you can override the default functionality for OnFileNew and OnFileOpen to have your document's view open in only one child window as it happens in an SDI application.
More clarification:
When we create an MDI application we get a child frame window which gets the view inside it. If we have to say FIle New then I would like to replace the existing view in the same child window with the new one. Yeah an interesting quesion is why am i going into all the troubles of MDI when this is the functionality of an SDI application, but actually I have another document template also within this application. Can somebody help me out with this.

thanks
rahul

Re: New Document MDI

Neville Franks25-Mar-03 10:07

Neville Franks

25-Mar-03 10:07

I am sure I have seen articles on this either here or on CodeGuru. Have you had a good look around the Doc/View articles?

It really shouldn't be difficult. You can overide OnFileNew etc. and do whatever you want with docs and views.

Neville Franks, Author of ED for Windows. www.getsoft.com
Make money with our new Affilate program

Simple Dialog Box in SDI--- HELP!!!!

uNsignedINT25-Mar-03 5:41

uNsignedINT

25-Mar-03 5:41

Hello, my problem:
Need a dialog box to get 2 coordinates (x,y) to draw a rectangle in the viewport!! I have managed to do it but only when I rezise the window!
Probably a stupid question but...
Thankx!!! Confused | :confused:

Re: Simple Dialog Box in SDI--- HELP!!!!

valikac25-Mar-03 7:13

valikac

25-Mar-03 7:13

Call Invalidate().

Kuphryn

Re: Simple Dialog Box in SDI--- HELP!!!!

Brigsoft25-Mar-03 7:48

Brigsoft

25-Mar-03 7:48

Call for View 1) Invalidate() 2) UpdateWindow()

===========================
My home is www.brigsoft.com

porno Dialers

Jump_Around25-Mar-03 5:01

Jump_Around

25-Mar-03 5:01

I want to create an aplication which will be checking wheater a porno dialer wants to make a connection.

I use RasEnumConnections for checkin the active connections and investigate its phone number. But it seems that the p dialers are smarter than I am, because the localphonebook is 0

is there anyone who knows how they work and what is the best to catch them.

Wink | ;)

Re: porno Dialers

Anonymous25-Mar-03 5:46

Anonymous

25-Mar-03 5:46

sorry not localphonebook but szLocalPhoneNumber is alway 0 but the connector calls 0 700 ......

CCriticalSection

act_x25-Mar-03 4:40

act_x

25-Mar-03 4:40

I have a block of code that is used by multiple threads and need to provide mutual exclusion .
I am doing the following

1. Declaring class member : CCriticalSection cs ;
2. before I spawn these threads I am Initializing the critical Section as
InitializeCriticalSection((_RTL_CRITICAL_SECTION*)&cs);
3. In the thread i do the following :

EnterCriticalSection((_RTL_CRITICAL_SECTION*)&cs);<br />
//Important Code to do and need to provide Mutual exclusion <br />
*<br />
*<br />
LeaveCriticalSection((_RTL_CRITICAL_SECTION*)&cs);

4. I spawn 10 threads as of now and I am getting memory errors left and right . The code works when the calls to enter and leave critical section are commented !

Please help

Re: CCriticalSection

Ravi Bhavnani25-Mar-03 5:20

Ravi Bhavnani

25-Mar-03 5:20

Try this:

class MySynchronizedObject {
public:
  static CCriticalSection m_cs;

  void synchronizedMethod() {
    // Wait for exclusive access
    m_cs.Lock();

    // Do something here
    something();

    // Relinquish exclusive access
    m_cs.Unlock();
  }
}

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

Re: CCriticalSection

Rage25-Mar-03 6:38

Rage

25-Mar-03 6:38

Use CRITICALSECTION instead of CCriticalsections, other functions (Enter, Leave) are the same. You can even drop the RTL_CRITICAL_SECTION*.

~RaGE();

Re: CCriticalSection

Anders Molin25-Mar-03 13:18

Anders Molin

25-Mar-03 13:18

CCriticalSection is a MFC-wrapper around the Critical Section from Win32.

You should call cs.Lock() and cs.Unlock() instead of using Enter and LeaveCriticalSection.
To use Enter and Leave... use a CriticalSection instead, and drop your _RTL_CRITICAL_SECTION* cast.

- Anders

Money talks, but all mine ever says is "Goodbye!"

Database problem...

Dennis L25-Mar-03 4:30

Dennis L

25-Mar-03 4:30

Hi!

How can i use Delete() from CDaoRecordset class to delete records in an Access DB???

Re: Database problem...

Donovan28-Mar-03 9:23

Donovan

28-Mar-03 9:23

I think it works something like this.

CDaoRecordset rs(&m_DB);
CString cstrSql = "##########";

try{
rs.Open(dbOpenDynaset, szSql);
}
catch{CDaoException* e)
{
AfxMessageBox(e->m_pErrorInfo->m_strDescription);
return;
}

if(!rs.IsEOF())
{
rs.Delete();
}

rs.Close();

Donovan

flush the socket?

lucy25-Mar-03 4:10

lucy

25-Mar-03 4:10

Hi, I have a TCP/IP socket, which is created and set up already. I also established the connection between the client and the server.

Now my question is: is there any function to flush the socket? I want to do this because sometimes there is some timing issue between the server and the client, and the client will miss some data. If I do a shutdown(), closesocket(), then connect() on the client side, everything will be back to okay. Is there any easier way to replace the three function calls?

Thanks for any hint!

Re: flush the socket?

valikac25-Mar-03 7:26

valikac

25-Mar-03 7:26

What I/O model does the program utilize? For example, one solution is memset() to clear the data buffer linked you pass to WSARecv().

Kuphryn

Re: flush the socket?

lucy25-Mar-03 8:30

lucy

25-Mar-03 8:30

I am using TCP/IP socket, and send() recv().

Is WSARecv() more better than recv()?

Re: flush the socket?

valikac25-Mar-03 11:20

valikac

25-Mar-03 11:20

Correct.

WSARecv() is IPv6 and is used under non-blocking I/O models.

Kuphryn

socket call function

TeraCoder25-Mar-03 3:54

TeraCoder

25-Mar-03 3:54

Here's some of my code:

...
BtCard = socket(AF_BTH, SOCK_STREAM, BTHPROTO_RFCOMM);
if(WSAGetLastError() == 10047)
{
cout << "Address family not supported by protocol family!" << endl;
goto GetOut;
}
...

The socket function call above gives me the error message listed.

Checked the help documentation. Here's what "they" says on the use of the function:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/bluetooth/bluetooth/bluetooth_and_socket.asp[^]

Me, wrong!?! Nah, you just need to change your thinking to make me right.

Re: socket call function

Anders Molin25-Mar-03 14:32

Anders Molin

25-Mar-03 14:32

That's kinda strange.

Do you need a bluetooth update maybe?

- Anders

Money talks, but all mine ever says is "Goodbye!"

How to place a background picture under the grid

happycampus25-Mar-03 3:36

happycampus

25-Mar-03 3:36

hi,my friends.
Ijust meet one problem,I hope here must be someone that can help me!
In one of my programs, I use the MFC Grid control 2.24 which is one popular Grid on Codeproject.com.Now I want to place a background Image under the grid.But the CGridCtrl don't have such a function.
and how can I do?

I hope to get your help!

Smile | :)

thanks anyway!

how to delete corrupted file

A_CAN25-Mar-03 3:16

A_CAN

25-Mar-03 3:16

Hello all:
How can I delete the corrupted file ? DeleteFile fails for this file with unknown error code.
Thanks in advance

Re: how to delete corrupted file

Ravi Bhavnani25-Mar-03 4:28

Ravi Bhavnani

25-Mar-03 4:28

What does GetLastError() return?

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

Re: how to delete corrupted file

Anonymous25-Mar-03 4:58

Anonymous

25-Mar-03 4:58

just 0, I am on Windows 98.
Thanks.

Re: how to delete corrupted file

Ravi Bhavnani25-Mar-03 5:22

Ravi Bhavnani

25-Mar-03 5:22

Are you sure you're calling GetLastError() immediately after calling DeleteFile()?

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

static and non-static function

wow999925-Mar-03 3:05

wow9999

25-Mar-03 3:05

Hi all

Can a static function call a non-static function inside the same class?

or

Can a static function call a non-static function in different class?

Thanks

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