Re: A printing problem - C / C++ / MFC Discussion Boards

Re: Confused about Bound sockets and deamons

21-Jun-02 10:28

What u said about ur impression that ure "bounced" to another socket is true.

And yes multithreading is a solution, but u should keep track of ur connected sockets in a linked list or stuff.

In order to pass the connected socket to the working thread, u can do it when launching the thread and that by doing:

AfxBeginThread ( WorkerThread , yourConnectedSocket ) ;

and in the worker thread u should do a cast on the type of the socket.

UINT WorkerThread ( LPVOID param )

{
if(!param)
return;
CSocket sock = (CSocket) param; // supposing ur socket is a CSocket
....
}

Papa
Murex Co.

Re: Confused about Bound sockets and deamons

jferrell121123-Jun-02 3:37

jferrell1211

23-Jun-02 3:37

you are corect, the concept is known as "completion ports"....search MSDN for this term, there was a good article in MSDN Mag last year on this.....Win2K Server has API support built in for allocating blocks of ports for this...

good luck

1. The Lord loves a workin' man.
2. See a doctor and get rid of it.
3. Don't trust whitey.

Send Message WM_CLOSE

MyEden21-Jun-02 7:16

MyEden

21-Jun-02 7:16

Hi, I have a problem, ... I need to close an application correctly (send a Message WM_CLOSE) but I kwown only the name of this application. This I get HANDLE with EnumProcessModules function, but i don't known how to send a message.
Thanks a lot

Re: Send Message WM_CLOSE

21-Jun-02 9:34

Ok then u have to FindWindow() it, then post this window a WM_CLOSE message.

Papa
Murex Co.

Re: Send Message WM_CLOSE

MyEden21-Jun-02 22:01

MyEden

21-Jun-02 22:01

Thanks a lot, but my application hasn't Windows, it's only a Process on Memory, can I use FindWindow() to send the message WM_CLOSE ?
Confused | :confused:

MySql++

klawipo21-Jun-02 6:37

klawipo

21-Jun-02 6:37

Hello, does anyone have experience using MySql and its C++Interface?
my problem is:
every time I try to fill a database using MySql++ the MySql-Server shuts down after a while. What is it due to ?
The Connection-Pointers are destroyed after Filling a record, so there should not be a "Too Many Connections"-Problem.
Versions:
MySql 3.23.42-nt,
mysql++-1.7.1-1-win32-vc++

A printing problem

Vincent Ye21-Jun-02 6:08

Vincent Ye

21-Jun-02 6:08

Hi, all,

I want to print a snapshot of the activated window, I'v written some codes.
It works well if the printer is directly connected the computer, but if it
outputs to a network printer, it doesn't work, a paper is exported from the
printer, but nothing on it.

here is the code:

void CBaseTabSheet::OnFilePrint()
{
// TODO: Add your command handler code here
CRect rectWindow;
CWnd *pWnd;
CDC memDC;

if (GetParent()->IsZoomed()) {
pWnd = AfxGetMainWnd();
AfxGetMainWnd()->GetWindowRect(rectWindow);
} else {
pWnd = GetParent();
GetParent()->GetWindowRect(rectWindow);
}
CWindowDC dc(pWnd);
int nX = rectWindow.Size().cx;
int nY = rectWindow.Size().cy;
memDC.CreateCompatibleDC(&dc);
CBitmap *pBitmap = new CBitmap();
pBitmap->CreateCompatibleBitmap(&dc, nX, nY);
CBitmap * pOldBitmap = (CBitmap *)memDC.SelectObject(pBitmap);
memDC.BitBlt(0, 0, nX, nY, &dc, 0, 0, SRCCOPY);

CDC prtDC;
CPrintInfo printInfo;
DOCINFO di;

if (AfxGetApp()->GetPrinterDeviceDefaults(&printInfo.m_pPD->m_pd)) {
HDC hDC = printInfo.m_pPD->m_pd.hDC;
if (hDC == NULL) {
hDC = printInfo.m_pPD->CreatePrinterDC();
}
if (hDC != NULL) {
CString strTitle;
strTitle.LoadString(AFX_IDS_APP_TITLE);
prtDC.Attach(hDC);
memset(&di, 0, sizeof(DOCINFO));
di.cbSize = sizeof(DOCINFO);
di.lpszDocName = strTitle;
prtDC.m_bPrinting = TRUE;

if (prtDC.StartDoc(&di) != -1) {
prtDC.StartPage();

int X = prtDC.GetDeviceCaps(LOGPIXELSX);
prtDC.StretchBlt(0, 0, nX * X / 96, nY * X / 96,
&memDC, 0, 0, nX, nY, SRCCOPY);

prtDC.EndPage();
prtDC.EndDoc();
}

prtDC.Detach();
prtDC.DeleteDC();
}
}
memDC.SelectObject(pOldBitmap);
delete pBitmap;
memDC.DeleteDC();
}

Any suggestion? Thanks in advance

Vincent

Re: A printing problem

Carlos Antollini21-Jun-02 6:23

Carlos Antollini

21-Jun-02 6:23

You need to use the OpenPrinter function and then to use the StartDocPrinter and StartPagePrinter, WritePrinter functions...

Best Regards

Carlos Antollini.
www.wanakostudios.com
Sonork ID 100.10529 cantollini

Re: A printing problem

Roger Allen21-Jun-02 6:27

Roger Allen

21-Jun-02 6:27

Its probably because the printer driver does not support the BitBlt function. Convert your bitmap to a DIB and use StretchDIBBits.
You should then find it will work every time.

Roger Allen
Sonork 100.10016

If I had a quote, it would be a very good one.

Re: A printing problem

Vincent Ye21-Jun-02 9:02

Vincent Ye

21-Jun-02 9:02

Hi, Roger Allen,

Thank you for your reply.

Could you tell me more details about how to conver the bitmap to DIB? As you can see my codes, I created a CBitmap object and selected it to a device, and copied the screen image to it. How can I conver this CBitmap object to DIB.

Thank you very much.

Vincent

Palm Problem..

Renjith Ramachandran21-Jun-02 5:49

Renjith Ramachandran

21-Jun-02 5:49

Hey Friends..
now i programming for my palm PC(windows CE).and there is a problem...i cannot load/place the ActivX control...looking sooo strange.but the CLSID is present in registry after registering the control......
help..................

Renjith-The CPian.

Re: Palm Problem..

Mike Nordell23-Jun-02 18:05

Mike Nordell

23-Jun-02 18:05

You are seriously confused.

Palm has exactly nothing to do with WinCE.
and even less with Visual C++

ETSLayoutFormView, scrollbars missing.

aldeba21-Jun-02 5:26

aldeba

21-Jun-02 5:26

Anyone worked with ETSLayoutFormView?

the scrollbars does not seems to appear. I guess

SetScrollSizes(MM_TEXT, CSize(cx,cy));

in OnSize(UINT nType, int cx, int cy)
is causing the scrollbar to be made for the size of the window and not the size of the form itself.

Anyone?Thanxs in advance.

TIP: When your program suddenly stops loading

Jason Hooper21-Jun-02 5:16

Jason Hooper

21-Jun-02 5:16

A while ago I posted a question about a program suddenly ceasing to load when I run it, with no error message or output or anything at all. This happened again today, and I managed (through trial and error) to track it down to the class definition.

I declared some stuff private: above my public: block in my CDialog-derived class definition. I moved the private: block down to the very bottom of the class, and once again my app starting working.

Just a tip, if you've had the same problem.

- Jason
(SonorkID 100.611)

In the beginning, teachers taught the 5 W's: who, what, where, when, why. Now it's just a big damn G

Re: TIP: When your program suddenly stops loading

Neville Franks21-Jun-02 11:37

Neville Franks

21-Jun-02 11:37

Hi Jason, FWIW I'm afraid I find it very hard to believe this was the cause of your problem. The simple fact the you changed something (anything) and did a rebuild was more likely the reason.

Neville Franks, Author of ED for Windows. www.getsoft.com

Re: TIP: When your program suddenly stops loading

Jason Hooper22-Jun-02 1:33

Jason Hooper

22-Jun-02 1:33

Yeah, I just tried mixing it around again, and couldn't reproduce the behaviour. Who knows :/

- Jason
(SonorkID 100.611)

In the beginning, teachers taught the 5 W's: who, what, where, when, why. Now it's just a big damn G

How can I tell if an app has shut down?

Paresh Solanki21-Jun-02 5:14

Paresh Solanki

21-Jun-02 5:14

I have an program (P1) that runs a long (and unattended) process and then terminates when that process is complete.
I do not have the source code for this program and so have no way to change it's behaviour.

I can write another program that can start another process, but I need to start it when P1 has completed it's job and not before.

So I need a way of detecting when P1 has finished and use that event to start my program.

Any help here?

Paresh Solanki
hombre que trabaja pierde tempo precioso "The man who works is losing precious time." Vuemme

Re: How can I tell if an app has shut down?

Jeremy Falcon21-Jun-02 5:26

Jeremy Falcon

21-Jun-02 5:26

If your program launches P1, then you can use...

WaitForSingleObject(hProcess, INFINITE);

This function will not return until the created process is terminated. After P1 is done, then you can call the third program.

Jeremy L. Falcon<nobr>
Homepage : Sonork = 100.16311

"But everybody darlin' sometimes bites the hand that feeds."
"Remember in this game we call life that no one said it's fair."
"Just because you're winnin' don't mean you're the lucky ones."
Song: Breakdown - Album: Use Your Illusion II - Artist: Guns N' Roses

Re: How can I tell if an app has shut down?

Paresh Solanki21-Jun-02 6:01

Paresh Solanki

21-Jun-02 6:01

Thanks, but I have no control over when P1 runs. I just need to know when it's completed.

I cannot start P1 from within my app because I have no control over when it should start.

Paresh Solanki
hombre que trabaja pierde tempo precioso "The man who works is losing precious time." Vuemme

Re: How can I tell if an app has shut down?

Carlos Antollini21-Jun-02 6:12

Carlos Antollini

21-Jun-02 6:12

Ok, in that case you need to use the psapi.dll... look into code project, you can find a class that look in all process, if you don't find the P1 running, is because the application finished Wink | ;)

Best Regards

Carlos Antollini.
www.wanakostudios.com
Sonork ID 100.10529 cantollini

Re: How can I tell if an app has shut down?

Martin Ziacek21-Jun-02 5:30

Martin Ziacek

21-Jun-02 5:30

Use CreateProcess() to start P1. You will get new process handle in the last parameter PROCESS_INFORMATION structure - hProcess. Then you can use this handle to wait for completion of that proces as a parameter for WaitForSingleObject() function. After call to WaitForSingleObject() will finish, you can get exit code of proces with GetExitCodeProcess(), if you will need it. Then you can start it again.

Re: How can I tell if an app has shut down?

Jason Henderson21-Jun-02 9:48

Jason Henderson

21-Jun-02 9:48

What Martin said is best, but you could also use FindWindow in a while loop. As soon as the window has closed, it will not be found by FindWindow so drop out of the loop.

Jason Henderson
_{quasi-homepage}
^articles
_{"Like it or not, I'm right!"}

using bits for program control

21-Jun-02 4:59

hi,
I want to use a set of actual bits(enough of bools!) to control certain actions in my program.Is there any better or easier way than bitset template to use;any plain old C things?
-Huskey

Re: using bits for program control

Martin Ziacek21-Jun-02 5:50

Martin Ziacek

21-Jun-02 5:50

What do you think about bit fields?

Re: using bits for program control

Jason Henderson21-Jun-02 9:53

Jason Henderson

21-Jun-02 9:53

Use a DWORD like this:

#define ACTION1  2
#define ACTION2  4
#define ACTION3  8
#define ACTION4  16
#define ACTION5  32

DWORD actions = ACTION3 | ACTION5;

if (actions & ACTION3)
  // do something

...

Jason Henderson
_{quasi-homepage}
^articles
_{"Like it or not, I'm right!"}

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