C / C++ / MFC

TAPI compatibility issue in Win2000

5-Mar-01 10:06

basically you are talking about writing a shell (like the unix shells or msdos) and that isnt actually a trivial task ... to run things in sequence and get return values and pass command lines would require a batch language of some sort

it would be easy enough to write a *very* simplified shell type thing that could do basic stuff but for more advanced capabilities you will have to do some more in-depth studying of shells

sorry there isnt a CMyShell class that does it for you (well not one i know of anyways)

Suspicious | :suss:

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"every year we invent better idiot proof systems and every year they invent better idiots"

Kelly Yao5-Mar-01 9:26

Kelly Yao

5-Mar-01 9:26

I have a TAPI program using TAPI version 2.2. It works fine in Win98, but I got some problems in Win2000. I made a call without an owner. When the transaction was down, I did lineDrop(), lineDeallocateCall(), lineClose(), and lineShutdown(). But if I made a new call, the lineMakeCall() returned me an error LINEERR_ALLOCATED. Seems like I couldn't release the resource in Win2000. Could anybody give me some idea to solve this problem? Thank you so much!

Re: TAPI compatibility issue in Win2000

l a u r e n5-Mar-01 9:46

ActiveX Control Wrapper/coclasses

5-Mar-01 9:46

i know there are some differences between tapi 2.x and tapi 3.x ... win2k uses tapi 3.x so check for the problem there

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"every year we invent better idiot proof systems and every year they invent better idiots"

James Bush5-Mar-01 6:29

James Bush

5-Mar-01 6:29

Hi everyone, Im new to this VC++ business and am having a few 'issues' with activex controls on dialogs...

Ive inserted an activex control onto a dialog and created a member variable in the dialog class to 'host' it. I get the main wrapper class for the control generated fine and two other coclasses which I need to access some members of the control. The main wrapper class is derived from CWnd and the coclasses are derived from COleDispatchDriver.

I can use the member variable reference to the control fine except I cannot instantiate an instance of either of the two coclasses. Ive got code that looks like this....

SomeFunction()
{
CCoclass pMyInstance;
MyInstance = m_MyMemberControl.GetCoClassThingy();

}

When I compile I get a message saying something about the coclass not being defined, yet the headers and definitions are there; as generated by class wizard.?????

Anyone tell me whats going on, how do I use these coclasses to access objects within the activex control???

Prrreeeeeezzeee eddddieeee!!!
Blush | :O

)

James Bush.
5+years Pro VB&ORACLE (OOD, ADO etc...) MS VC++ newbie!

cmd

5-Mar-01 6:26

How can I minimize or hide a window that the project shows when I made a system call like this : system("rsh ...")? Thanks Rose | [Rose]

Re: cmd

5-Mar-01 8:07

Im don't know coputer
but I am testing Roger Cabel pc here
Enumerate the Windows on the screen. Then call window hide or mininmize on the window you want.
I know it will be hard when you are in DOS Shell windows, how ever you can get the Information of the Process by calling the GetBufferInfo
I think Rose | [Rose]

Re: cmd

l a u r e n5-Mar-01 10:01

How should I hide or remove tabs in a property sheet without getting the PC crashed?

5-Mar-01 10:01

can u use CreateProcess(...) instead? and are u running on win2k? if so you can simply use the CREATE_NO_WINDOW flag as part of the call

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"every year we invent better idiot proof systems and every year they invent better idiots"

Joan M5-Mar-01 4:58

Joan M

5-Mar-01 4:58

I have to implement two working ways, and I've thought in the property sheet, as you can see in the code below, I'm trying to add and remove property pages, but this way don't works.

Note:
i beg your pardon because of my english and because this can be like a big mess: this is an industrial keyboard...

Thank you in advance.

if (bManual)
{
if ((this->GetActivePage() == &this->m_ProgramaNCExecPPDlg) || (this->GetActivePage() == &this->m_ProgramaNCSimulacioPPDlg))
{
this->AddPage(&this->m_ProgramaNCEdicioPPDlg);

this->RemovePage(&this->m_ProgramaNCExecPPDlg);

this->RemovePage(&this->m_ProgramaNCSimulacioPPDlg);

this->m_ProgramaNCExecPPDlg.Create(IDD_PROGRAMA_EDICIO_PP,this);
this->SetActivePage(&this->m_ProgramaNCEdicioPPDlg);

this->m_ProgramaNCEdicioPPDlg.SetTextProgramaNCE(this->m_ProgramaNCDoc.GetTextProgramaNCE());
}
}
else
{
if (this->GetActivePage() == &this->m_ProgramaNCEdicioPPDlg)
{
this->AddPage(&this->m_ProgramaNCExecPPDlg);

this->AddPage(&this->m_ProgramaNCSimulacioPPDlg);

this->RemovePage(&this->m_ProgramaNCEdicioPPDlg);

this->SetActivePage(&this->m_ProgramaNCExecPPDlg);

this->m_ProgramaNCExecPPDlg.SetTextProgramaNCF(this->m_ProgramaNCDoc.GetTextProgramaNCF());
}
}

How do I write a file to an edit ctrl or to other ctrl?

5-Mar-01 4:09

How do I write a file to an edit ctrl or to other ctrl?
I need to disply the file on a formview to the user.

Re: How do I write a file to an edit ctrl or to other ctrl?

l a u r e n5-Mar-01 4:35

Re: How do I write a file to an edit ctrl or to other ctrl?

5-Mar-01 4:35

we load the file into a memory buffer (a cstring would do too) and then use SetWindowText using the handle to the control (or a control variable if you have one mapped) or use the ddx routines if the variable (say the cstring) is mapped to the control

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"every year we invent better idiot proof systems and every year they invent better idiots"

C^hris L^osinger5-Mar-01 4:55

C^hris L^osinger

5-Mar-01 4:55

also...

if these files are coming from non windows sources (or even from many windows sources) you'll need to replace all lone "\n" characters with "\r\n".

if you don't, the new lines will show up as little black rectangles in the edit control.

-c

------------------------------
Smaller Animals Software, Inc.
http://www.smalleranimals.com

Re: How do I write a file to an edit ctrl or to other ctrl?

l a u r e n5-Mar-01 10:09

Bulk operations with Long binary. HELP

5-Mar-01 10:09

oooops!
forgot that bit
Smile | :)

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"every year we invent better idiot proof systems and every year they invent better idiots"

Alex Barzovski5-Mar-01 3:57

Alex Barzovski

5-Mar-01 3:57

I need to insert a large number of records in a database table. Table has a SQL_LONGVARBINARY field. I tried SQLSetPos, but I cannot bind to the SQL_LONGVARBINARY field, so does not work. I can insert records one by one, but not a bulk. Does anybody know how to do it?

Regards.
A.B.

Re: Bulk operations with Long binary. HELP

l a u r e n5-Mar-01 4:33

Re: Bulk operations with Long binary. HELP

5-Mar-01 4:33

looking thru the docs for sql svr 7 it seems you can use bcp to update multiple records in one go but i dont know whether you can insert multiple records from multiple values in one go so to speak

we use bcp to populate the db at setup where we have to insert loads of data at once

what db are u using? can u post some code to look at?

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"every year we invent better idiot proof systems and every year they invent better idiots"

Alex Barzovski5-Mar-01 13:16

Alex Barzovski

5-Mar-01 13:16

Thanks,
I've already found out. If you are interested, here is the snippet

SQLHSTMT hStmt; // Statement handle.
SQLHDBC hDbc; // Connection Handle.
SQLHENV hEnv; // Environment Handle.

UINT s = MAX_JOBDESC_SIZE * R_SIZE;
BYTE * Storage = new BYTE[ s ];

SQLINTEGER * WordRecordID = new SQLINTEGER[R_SIZE]; // Job ID Field Buffer
SQLINTEGER * WordRecordIDLength = new SQLINTEGER[R_SIZE]; // jobID Length Array

SQLINTEGER * FileIndex = new SQLINTEGER[R_SIZE];
SQLINTEGER * FileIndexLength = new SQLINTEGER[R_SIZE];

SQLINTEGER * WordDescLength = new SQLINTEGER[R_SIZE];
SQLRETURN rc; // Return code
SQLINTEGER value, i;

// BLA- BLA -BLA: Connect, cursor options etc
// One of them is SQL_ROWSET size:

rc = SQLSetStmtOption(hStmt,SQL_ROWSET_SIZE,R_SIZE);
CheckError(hStm);
//Then
rc = SQLExecDirect(hStmt,(SQLCHAR*)"SELECT * FROM WORDS",SQL_NTS);
CheckError(hStmt);

rc = SQLBindCol(hStmt,1,SQL_C_SLONG,WordRecordID,sizeof(LONG),WordRecordIDLength);
CheckError(hStmt);

rc = SQLBindCol(hStmt,2,SQL_C_SLONG,FileIndex,sizeof(LONG),FileIndexLength);
CheckError(hStmt);

rc = SQLBindCol(hStmt,3,SQL_C_BINARY,Storage,MAX_JOBDESC_SIZE,WordDescLength);
CheckError(hStmt);

LONG Size = 0 ;
if (SQLFetch(hStmt)!= SQL_NO_DATA)
// Set Position API.
{
/*Put data ( copy ) into Storage,FileIndex,WordRecordID and their length arrays. Then: */

rc = SQLSetPos(hStmt,0,SQL_ADD,SQL_LOCK_NO_CHANGE);
CheckError(hStmt);

}

/* Clean up, disconnect*/

Thanks again.

Alex Barzovski

Re: Bulk operations with Long binary. HELP

Alex Barzovski5-Mar-01 13:17

Alex Barzovski

5-Mar-01 13:17

Windows Driver Development

.::RockNix::.5-Mar-01 0:03

5-Mar-01 0:03

Hi,

anybody here who made experience in driver-development or knows good books, good links about the driver-model ...

Thanks ... Mario ///

----------------------
www.klangwerker.de
mario@klangwerker.de
----------------------

l a u r e n5-Mar-01 2:41

5-Mar-01 2:41

goto http://www.numega.com/drivercentral/driverstudio.shtml and skwizz thru some of the links there ... they have some samples and stuff ... prolly mostly to advertise their product but it might have other links from it

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"every year we invent better idiot proof systems and every year they invent better idiots"

MickAB5-Mar-01 3:12

5-Mar-01 3:12

You don't say what windows platform you're developing for....

Just a few questions, then I may be able to help you.

Hardware:
Is it a new piece of hardware?
Off the shelf or in-house

Operating system:
XP/Win2k/NT4 or ME/98/95

Type of driver you are developing:
Kernel mode, user mode or both? (Or 'don't know'.)

If you are developing for NT based OS's, as far as books go, the 'classic' text is "The Windows NT Device Driver Book : A Guide for Programmers" by Art Baker, still relevant for Win2K, but a little dated now. (If you can get a cheap(==free) copy, it's worth having)
He has updated the book for Win2K, it's cunningly titled "The Windows 2000 Device Driver Book : A Guide for Programmers"
I have the first one, haven't got the latest one. The book is still useful, but if your a newbie, get the latest Win2K version.
You could also try "Windows NT Device Driver Development " by Peter Viscarola & W. Anthony Mason, another good book, which I also have. More up to date than the first Art Baker book, but published before Win2K was released.

The (first)Art Baker book is more of a "Device Driver Cookbook" then the Viscerola one.

Plenty of help is available in the DDK, (which is freee to download from MSDN now). But I recommend you get a book too.

Read the book reviews on Amazon.com, all three titles I have mentioned have been reviewed there.

(p.s. I also have another device driver book, but it's at home & I can't remember the title right now). Blush | :O

.::RockNix::.5-Mar-01 4:37

5-Mar-01 4:37

Ok,

I want to write the driver in the first way for win98 and maybe later for 2000. I can`t say anything about the mode you asked for. I have many experience with Win32-API but this driver stuff is totally new to me, so at first I have to learn the basics about the model.

Let me explain what we are trying to do, so maybe you can give some advice where to start.

Actually we are developing a midi-interface ( 19" - outside the pc ) which we want to configure and use via a pc. The configuration and midi-data transmission should go via rs232. So if someone uses a sequencer-soft like Cubase or whatever our external midi-device should have an entry in the output-device list and the app should sent the midi-data through the internal RS232 to our device.

I have heard about a book called PROGRAMMING THE WINDOWS DRIVER MODELL from MS-PRESS. Do you know this book ?

Greatings Mario ///

----------------------
www.klangwerker.de
mario@klangwerker.de
----------------------

MickAB5-Mar-01 5:57

5-Mar-01 5:57

Ahh, much clearer.

First off, to read and write to the serial port under Windows 98 & 2000 is not too difficult, just use the relevant Win32 API calls.

(CreateFile() with the correct parameters to open the device, then take it from there. Plenty of info on sequential and overlapped IO, etc. in the MSDN)

It sounds like you actually want your driver to appear as some kind of generic midi device and internally route midi commands via the serial port? (Or am I barking up the wrong tree?)
I imagine this requires a bit of registry jiggery-pokery to have your app. appear in the driver list. Not sure if this is possible with a pure user-mode driver, I'm not that au-fait with the user-mode part of WDM under Win2k/98 yet.

My development advice is to get the serial port access down pat first, then migrate it to some kind of 'virtual device' driver later (No I *didn't* mean a VxD in case anyone reading this was about to flame me).

As for the different modes (user mode or kernel), the difference is that kernel mode drivers can use privileged processor instructions (IO read and writes for example) and can therefore access hardware directly. User mode drivers need to go via a kernel mode (or other user-mode) driver to access hardware.
There are other differences of course, but you need to read the books I mentioned in the first post for more detail.

The book you mentioned, nope, sorry but I haven't heard of it.

If I'm right about what I *think* your asking about (see comment above, 'barking up the wrong tree' Wink | ;)

) then the books I mentioned are not the ones you want right now. If you need info on serial communications under windows, use the MSDN.
Can't remember if there's anything on the topic in Petzold(not likely) or Richter(maybe).
Richter goes into overlapped and sequential IO and threading issues, but I'm not sure if he specifically looks at the serial port.

Hope this helps Cool | :cool:

.::RockNix::.5-Mar-01 21:29

5-Mar-01 21:29

>It sounds like you actually want your driver to appear as some kind of >generic midi device and internally route midi commands via the serial port? >(Or am I barking up the wrong tree?)

Hi Mick,

you are absolutly right. That`s the way it should go. The serial communication is no problem to me. My test-app I wrote for the hardware uses the serial port to configure and test the hardware and it works well. The point is how to re-route the midi-stream from a midi-application.

I know that must be possible. There is a tool out called TotalRecorder. This tool does the same I want but with audio-streams. It receives a wave-stream from another app, can write it to a file and send it THROUGH to the wave-device and it also appears as a kind of device-driver in the list.

But I see I have to read and learn a lot again before starting.

Ok, once again back to the books - Do I need different books for 98 and 2K to learn the basics or are there only special things that are different so I can use one book to learn the basics of the driver models of both OS ?

Thanks Mario ///

----------------------
www.klangwerker.de
mario@klangwerker.de
----------------------

MickAB6-Mar-01 1:17

6-Mar-01 1:17

Hi Mario, glad you found my comments useful, let's see if I can be of any more help.

Now you've established that driving the hardware via the serial port using the API calls is ok, let's look at the next problem. So I need to ask some more questions.

First off, MIDI is not my forte, and I've never played around with any midi devices or applications, so bear with me.

The problem is you have a piece of hardware which hangs off of the serial port.
Q> Do you want to detect when the device is plugged in or removed?
(This implies some way of enabling Plug-and-Play for the serial port).
I think this would be nice to have, but not necessary to get the driver working.

Q> Do you need a MIDI application to 'see' the hardware on the serial port as a MIDI device?
(If yes, then it sounds like you want to write a 'layered' driver which sits between the MIDI device drivers and the serial port, rerouting MIDI commands to the serial port)

To answer your other question, for Win2K and 98/ME (and I assume XP), the most 'compatible' drivers are WDM drivers. (By compatible, I mean write-once, run on any WDM platform... in theory).

The book I mentioned yesterday (which I couldn't remember the title of) is "Writing Windows WDM Device Drivers" by Chris Cant. It's pitched at an accessible level, and contains some good information. It also explains some of the differences and similarities between 'classic' NT style drivers, Windows 95 style VxD drivers, and the new WDM stuff. It's also much more readable than any other device driver books I've read.

Whether it's 100% relevant to your current problem I can't say, (I only have three device driver books, which is not a large enough sample to give a good recommendation). But IMHO it's a good place to get the basics of the differences between the various driver types you can have on Windows platforms.

l8r

"The project spec. said 'customer *needs* to go to the top of the mountain'....nobody stopped to ask him why"

.::RockNix::.6-Mar-01 4:31

6-Mar-01 4:31

Hi Mick,

let me try to answer the questions clearly:

Q>> Do you want to detect when the device is plugged in or removed?
>>(This implies some way of enabling Plug-and-Play for the serial port).
>>I think this would be nice to have, but not necessary to get the driver >>working.

This is not necessary. I don`t see any advantage at the moment if we do so. But wait ... what about possible handshaking between hardware and ser-port. Could this cause a deadlock ? Maybe an app is sending midi-msg through the ser-device and the device waits for a handshake ? I`m not sure ...

Yes, I think we should keep the idea. We have several CPU`s in our hardware and it would not be to difficult to make them send an id-string back to the driver on request

>>Q> Do you need a MIDI application to 'see' the hardware on the serial port >>as a MIDI device?

Let me say some words about Cubase ( midi-sequencer-app ). Here you have for example 16 seperate tracks for midi-commands. For every track you can choose a different midi-out device if you have more than 1 device installed. So finally our driver should appear in this list, get the midi-commands from the track and send it via RS232.

>>(If yes, then it sounds like you want to write a 'layered' driver which >>sits between the MIDI device drivers and the serial port, rerouting MIDI >>commands to the serial port)

That`s it !

Thanks a lot ... Mario ///

P.S.: A LITTLE ENGLISH LESSON: I often read the "IMHO" - What does this mean ?

----------------------
www.klangwerker.de
mario@klangwerker.de
----------------------

MickAB6-Mar-01 5:50