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your document is the place where the data for the app (or more correctly the document class) is stored / kept / buffered depending on what kind of app you are writing
don't confuse a document in the mfc sense with a document in the word or excel sense although they are represented as mfc documents (probably)
suppose you write a text editor that needs to know upon exit that the user modified the data in the view window ... on the event that changes the view data (or when you get the modified view data via ddx) you can set the mfc documents bModified flag to let the framework know the data changed
you don't need to use it always ... i do in about half the apps i write
---
"every year we invent better idiot proof systems and every year they invent better idiots"
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Hello, the codegurus around the world. 
Generally speaking, when we call UpdateAllViews(), and then OnUpdate() function of the views,
this means that some data must be updated.
In this case, we may add SetModifiedFlag().
In addition, if we works the complicated data structure, we usually use CObject derived class,
and serialized this object.
So, this may be problem.
For example, what shall we do if the data are the same one after the user updated?
the original data -> Updated data -> Updated data -> finally the same data as the original one.
In this case, don't we call SetModifiedFlag()?
The answer depends on the requirement...
Or, we add the function to check the content of the data whenever the application calls UpdateAllViews(). That is, even though UpdateAllViews() is called and the data isn't changed,
we don't need to call SetModifiedFlag()?
In commercial level, it is better to call SetModifiedFlag() whenever UpdateAllViews() is called.
Goodl luck! 
Have a nice day!
-Masaaki Onishi-
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<<< In the name of GOD >>>
Hi.
When CWnd is not attached to a window ?
Hadi Rezaie
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can you make your question more clear ,please !!!
AHMAD ALWASHALI
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A CWnd doesn't have a valid m_hWnd until one of Create, Attach, FromHandle, etc is called, and can lose it if that hwnd is killed - say by a call to DestroyWindow.
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<<< In the name of GOD >>>
Hi.
I have stupid question, but i really didn't understand.
What mean code in L1 line ?
BOOL CTestDlg::OnInitDialog()
{
L1: CDialog::OnInitDialog();
return TRUE;
}
Does this code is for, running OnInitDialog function again ?
It mean OnInitDialog will run twice ?
Other example:
void CTestDlg::OnOK()
{
L1: CDialog::OnOK();
}
Please explain to me ...
Hadi Rezaie
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HI Hadi_Rezaie
BOOL CTestDlg::OnInitDialog()
{ L1: CDialog::OnInitDialog(); return TRUE; }
that didn't mean running OnInitDialog function again .
befor dialog is being visible you need to do some thing
like initial your varibles or add icons ....etc
this is your initial in BOOL CTestDlg::OnInitDialog()
but base class ( CDialog )has some initial so you most call initial in base class :
L1: CDialog::OnInitDialog();
I hope that's enough
and sorry if I have mistakes (I didn't speak english very well)
AHMAD ALWASHALI
YEMEN
washali@yahoo.com
AHMAD ALWASHALI
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I have an MFC project which uses 2 views decended from CScrollView. I find that after each exit from CMainFrame::RecalcLayout my total memory allocation has increased by about 220bytes. This appears to happen during the processing of the RepositionBars function. I observed this while trying to find memory leaks using CMemoryState. I eliminated the leaks from my code but still seem to have this within "windows or MFC" code.
Does anyone know how to prevent this as this function is run everytime I swap between the views. My project is expected to be in use over an extended time so a gradual increase in memory usage is a concern. It does appear to be given back once the program completes.
Sara
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"...derived from cscrollview..." ... are you sure the derived classes are not snaffling some memory away that is escaping detection? i would think (although it is entierly possible) that cscrollview would be fully tested and debugged by now as it is rather an 'old' class
maybe you have a resource that isn't being released or something more exotic than straight memory allocs that are going awry
---
"every year we invent better idiot proof systems and every year they invent better idiots"
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Does anyone out there now how to create a property sheet within a Dialog Bar?
I have tried several different approaches, with no luck. I would really appreciate any advice, maybe this is not possible, if so let me know. If it is and you've done something like this please share with me how. Thanks, Rob
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I'd like to program an app that can monitor incoming calls on my phone
and display caller-id (if available).
I think it has to be done with TAPI, right?
Can anyone help me?
thanks in advance
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There are plenty of examples in the platform SDK.
I did some TAPI work about 3 or 4 years ago. We had an idea for an internet/TAPI
product, but it didn't get past the prototype stages. That was using TAPI 2.0,
which I don't remember much of.
TAPI is up at V3.0 I think so, you'd best look at the docs.
I think for callerID you may need a specialist card unless modems can do that
now (couldn't when I last tried, but like I said, that was a while ago).
Stephen Kellett
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i like to send voice from my vc++ application to telephone. i connect my application with the telepone using tapi but i am unable to the voice. help me.
bas
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I did a TAPI project a while back and found that I was better off in the long run to buy an Active-X component which is tested and known to work rather than try to reinvent the wheel. Depending on the environment you must live in, telphony testing can be a pain. I use SAX Comm Objects and it works well for both outbound and inbound calls. I don't think Caller ID is part of Sax Comm.
Paul Burton
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How to pass messages over the telephone? My application gets connected with the telephone and it calls the specified contact number. now i have the problem in sending message over it. if any one help me immediately, i would be grateful to you.
Srinivas
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Hi
I've tried to create toolbars with disabled buttons. Doesn't work.
I've thrown in a check and discovered that someone enables the button right after my call to CToolBarCtrl::EnableButton. How can I prevent this?
I'm quite sure that's the problem because I have hot toolbars working without problems. Is there anything different with using hot toolbars compared to disabled buttons?
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you have to use the UPDATE_COMMAND_UI handlers to disable toolbar buttons.
like this:
void CSAFileMonDoc::OnUpdateWatchStart(CCmdUI* pCmdUI)
{
pCmdUI->Enable(!m_bRunning);
}
-c
------------------------------
Smaller Animals Software, Inc.
http://www.smalleranimals.com
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I'm new to DirectX programming and I'm doing a breakout clone as a college project. I have to add some network functionality to my game though. I think I've got my server up and running.
I've created my socket, bound it and called WSAAsyncSelect with my own eventID and started listening. I just want to connect my client and send simple messages of 2 integers(that's all I need).
I just need some help connecting to local host to send messages. On the client I've created my socket, bound it and called WSAAsyncSelect with my own eventID and I'm trying to connect and it is failing here. Can someone please help?
Any help is much appreciated
Ciaran
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I'm developing a Win32 SDK MDI application (no MFC). My child forms maximize, but once they become maximized, they no longer operate (I can't minimize, restore, or close them. My child WndProc is empty except a call to DefMDIChildProc. Any ideas why the child won't respond after being maximized?
Thanks in advance for any help,
Jamie Nordmeyer
Portland, Oregon, USA
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this is beginning to intrigue me too ... how are you maximizing the window?
---
"every year we invent better idiot proof systems and every year they invent better idiots"
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Hi Lauren. It turns out that the problem existed in my Frame Window's WndProc. You have to return '0' when you handle the frame's WM_SIZE message. Go figure.
Jamie Nordmeyer
Portland, Oregon, USA
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I want to talk ho samebody who knows gantt
bogdan
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you mean gannt charts and all that?
---
"every year we invent better idiot proof systems and every year they invent better idiots"
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yes, but not for vb, I work in vc++, I know, the diference, is not so big, but I need some documentation and exemple, please.
Thanks.
Bogdan
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I have an existing console app in which I need to get some information from the registry which is placed there by a regular Windows based MFC app.
I have tried WriteProfileString(), WriteProfileInt(), GetProfileString(), GetProfileInt(), etc. with no luck. Any suggestions? Thank You.
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