C / C++ / MFC

Re: How to open MDB file without DSN

24-Sep-02 2:24

Using CDaoRecordset isn't an option?

Tomasz Sowinski -- http://www.shooltz.com

*** Vodka. Connecting people. ***

jmkhael24-Sep-02 2:29

jmkhael

24-Sep-02 2:29

http://www.codeproject.com/database/excel_odbc_write.asp

Papa
Murex Co.

while (TRUE)
Papa.WillLove ( Bebe ) ;

Unicode Controls

waterbuffalo24-Sep-02 2:13

waterbuffalo

24-Sep-02 2:13

I am finding Unicode Controls that can run on Windows 98. Help me, please.

Thanks for your help.

Re: Unicode Controls

Maximilien24-Sep-02 2:28

Maximilien

24-Sep-02 2:28

to have support for UNICODE for win98, you need to have your application use the unicows.lib

see Microsoft Layer of Unicode on Windows 95/98/Me Systems[^] @ microsoft. but if I were you, I'd think twice about it, and upgrade your OS to Xp.

Max.

when will the form disappear?

ns24-Sep-02 2:15

24-Sep-02 2:15

First, is it possible to terminate a CDialog (modeless) from the spawning class?

Second, if I am receiving repeated SendMessages from a dll, and this happens at a function call to the dll, will my dialog vanish after all the messages have been sent, or earlier? Will it wait for the dll to finish before executing the next line?

//launch modeless form
//call dll which wil send 100 sendmessages
//terminate modeless form

Third,can you sendmessage from a completely independent app, (not a dll) using the same technique as usual?

Thanks,
ns

Ravi Bhavnani24-Sep-02 6:26

24-Sep-02 6:26

First, is it possible to terminate a CDialog (modeless) from the spawning class?

Yes. Add a handler for a hidden button (or menu command) in your modeless dialog, eg: CMD_HIDDEN_CLOSE, which does this:

CMyModelessDlg::OnHiddenClose()
{
  // Do any dialog specific cleanup
  ...
 
  // Close this window
  CDialog::OnOK();
  DestroyWindow();
  delete this;
}

Then, just post the modeless dialog the CMD_HIDDEN_CLOSE command, eg:

CMyModelessDlg* pModeless = ...;
pModeless->PostMessage (WM_COMMAND, CMD_HIDDEN_CLOSE);

/ravi

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

Ravi Bhavnani24-Sep-02 6:29

24-Sep-02 6:29

Third,can you sendmessage from a completely independent app, (not a dll) using the same technique as usual?

Yes, as long as you have the target window's handle.

This (posting or sending messages) is an easy way to "automate" windows because they become responsive to a collection of commands. I suggest using PostMessage unless it's necessary for the command to be executed right away.

/ravi

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

Ravi Bhavnani24-Sep-02 6:43

24-Sep-02 6:43

Second, if I am receiving repeated SendMessages from a dll...

This is a good example of the distinction between Send/PostMessage(). Your DLL can call SendMessage() or PostMessage().

However, the termination message should be Posted, not Sended Smile | :)

in order to ensure that all previous messages are handled before the modeless dialog goes bye bye.

/ravi

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

EndDialog() - can I call it in the parent form?

ns24-Sep-02 6:53

24-Sep-02 6:53

Thanks! I've been stuck for almost a week trying to get my VB dll to send me a message. If this doesnt look i have to do shared memory............aaaargh! It sounds horrible. Plus Ihave to do it in VB and in Vc since the two are talking.....really dont want to, but ...

Thanks,
ns

ns24-Sep-02 2:02

24-Sep-02 2:02

If I spawn a modal form can I terminate it from the parent like
myDialog.EndDialog(retVal);

Will retval get filled in if I send it the address of the variable?

Thanks,
ns

Re: EndDialog() - can I call it in the parent form?

Nish Nishant24-Sep-02 2:07

Nish Nishant

24-Sep-02 2:07

Yes, you can call EndDialog(nRes) anywhere in your dialog class, but remember that EndDialog will close the dialog only after the function where you call it finishes!

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Thank you, and also...

ns24-Sep-02 2:18

24-Sep-02 2:18

So this is fine, right?

CDialog myDialog;
myDialog.DoModal();
myDialog.EndDialog(& nretVal);

Thanks,
ns

Re: Thank you, and also...

Tomasz Sowinski24-Sep-02 2:23

Re: Thank you, and also...

24-Sep-02 2:23

It's not - DoModal doesn't return until EndDialog is called. You'll have to call EndDialog in response to some event.

Tomasz Sowinski -- http://www.shooltz.com

*** Vodka. Connecting people. ***

Nish Nishant24-Sep-02 5:20

Nish Nishant

24-Sep-02 5:20

ns wrote:
So this is fine, right?

NO!!!

When you call DoModal a dialog is created and shown and a message loop is started. Now when you call EndDialog in one of the message handlers the dialog is destroyed, the message loop exited and then DoModal returns and the value it returns is the value you passed to EndDialog. Get it?

Regards,
Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

got it!

ns24-Sep-02 5:31

24-Sep-02 5:31

Finally

Thanks,
ns

Re: Thank you, and also...

Phil J Pearson24-Sep-02 6:26

Phil J Pearson

24-Sep-02 6:26

No it's not fine. DoModal will not return until the dialog is closed. Therefore your EndDialog will be called for a dialog that no longer exists.

It only makes sense to call EndDialog from a member function of the dialog. EndDialog is only relevant for modal dialogs and, by definition, the calling thread can't continue while a modal dialog is open.

The opinions expressed in this communication do not necessarily represent those of the author (especially if you find them impolite, discourteous or inflammatory).

Thanks.What about modeless forms though?

ns24-Sep-02 6:30

24-Sep-02 6:30

Appreciate the responses. I didnt really realize what modal meant..

Re: EndDialog() - can I call it in the parent form?

Ravi Bhavnani24-Sep-02 6:39

Odd GetSAfeHWnd problem...

24-Sep-02 6:39

"Yikes, please no!!! Ouch, that hurts." (Sound of your modal dialog talking) Cry | :((

.

A method like EndDialog() should only be called from within the dialog itself. To terminate a dialog from its parent, post it a custom message that causes the dialog to execute an orderly shutdown. (See my earlier reply about hidden commands).

/ravi

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

Mp3 support

pankajdaga24-Sep-02 1:44

pankajdaga

24-Sep-02 1:44

Hi,

Just wondering if it is possible to parse MP3 files with DirectSound. I want to get access to the raw music data and change it, like you could do with a .wav file

Pankaj

Without struggle, there is no progress

Re: Mp3 support

Stephane Rodriguez.24-Sep-02 1:50

Stephane Rodriguez.

24-Sep-02 1:50

No. You need DirectMedia (part of the Directx sdk).

DirectSound plays audio sample buffers described by a standard WAVEFORMATEX structure.

MS quote (http://www.microsoft.com/ddk) : As of September 30, 2002, the Microsoft® Windows® 2000 DDK, the Microsoft Windows 98 DDK, and the Microsoft Windows NT® 4.0 DDK will no longer be available for purchase or download on this site.

ns24-Sep-02 1:38

24-Sep-02 1:38

If I do:

CProgressCtrl *pBar = (CProgressCtrl*)GetDlgItem(IDC_PROGRESS1);
long hPbHandle = (long)pBar->GetSafeHwnd();

than if I do

(long)m_Progress1.GetSafeHwnd();

where m_Progress1 is the name of the control.

Thanks,
ns

Re: Odd GetSAfeHWnd problem...

Tomasz Sowinski24-Sep-02 1:45

Re: Odd GetSAfeHWnd problem...

24-Sep-02 1:45

What exactly is your problem?

Tomasz Sowinski -- http://www.shooltz.com

*** Vodka. Connecting people. ***

ns24-Sep-02 1:58

24-Sep-02 1:58

I'm passing the handle to a dll which sends me messages> Well, done the first way I get the message. Done the second way, it doesnt get past the senmessage in the dll, and an exception occurs in the client. With one method, the progressbar gets PBM_STEPIT, but not with the other..

Thanks,
ns

Re: Odd GetSAfeHWnd problem...

Tomasz Sowinski24-Sep-02 2:01