How to put a timer in an OSI model application - C / C++ / MFC Discussion Boards

Re: Help me use SetROP2 - Use ImageViewer

PJ Arends5-Dec-09 6:59

PJ Arends

5-Dec-09 6:59

Iain Clarke, Warrior Programmer wrote:
PJ Arends, an elder god of CP

$Shucks | :-\$

Sometimes I really do wonder if anybody, other than me, is actually still using that app, or if it is just collecting dust on the CP servers.

You may be right
I may be crazy
-- Billy Joel --

Within you lies the power for good - Use it!

Re: Help me use SetROP2 - Use ImageViewer

Iain Clarke, Warrior Programmer5-Dec-09 8:20

Iain Clarke, Warrior Programmer

5-Dec-09 8:20

I don't use it *often*, but it's a godsend every couple of years.

I can formally express my appreciation for your efforts! And if you ever visit the scandinavian block, I might even buy you a Beer | [beer]

.

Iain.

I have now moved to Sweden for love (awwww).
If you're in Scandinavia and want an MVP on the payroll (or happy with a remote worker), or need contract work done, give me a job! http://cv.imcsoft.co.uk/[^]

Re: Help me use SetROP2 - Use ImageViewer

unistar_kl6-Dec-09 14:24

unistar_kl

6-Dec-09 14:24

Different need makes different code,car may be faster,but bicycle is useful too,and it will not pollution of the environment,they are both existing to make sense,I think so.
Thank you for replay me.

Re: Help me use SetROP2

Rozis5-Dec-09 3:46

Rozis

5-Dec-09 3:46

Can't get the 'aha, this is the error in your code' but have some questions/remarks:

You use CreateDIBSection() but you could use CreateCompatibleBitmap() also. Did you try that?
It seems there's no pen selected in your DC..

Rozis

Re: Help me use SetROP2

unistar_kl5-Dec-09 4:50

unistar_kl

5-Dec-09 4:50

I'm sure have selected a pen,and the cover box's color is same with the pen's color.
CreateCompatibleBitmap() may be a good idea,but it seems that function is not simple to create bitmap in a memory dc.
Thanks Rozis,I'll try it later.

Re: Help me use SetROP2

Rozis5-Dec-09 13:04

Rozis

5-Dec-09 13:04

To help you with that one try something like this:

hMemDC:=CreateCompatibleDC(hdc)
hbitmap:=CreatecompatibleBitmap(hdc,w,h)
hold:=SelectObject(hMemDC,hBitmap)
...

hdc is the DC to your screen
w is width, h is height of the bitmap

And, could you try R2_NOT ??

Good luck

Rozis

Re: Help me use SetROP2

unistar_kl6-Dec-09 14:00

unistar_kl

6-Dec-09 14:00

Thank you Rozis, you are right,the code has succeed.
I have learned a lot from you, thank you!!!

How to put a timer in an OSI model application

chan114-Dec-09 3:28

chan11

4-Dec-09 3:28

I have an OSI model application that receives packets from datalink (via TCP sockets) examines it and send it to network layer to extract the socket information and packet type, etc. and sends to transport layer and then to application layer to send it to another application again via TCP socket for responses.

in my application when a socket goes down, I send a message from datalink to manager class that watches all 4 layers to notify the manager class for socket disconnection and manager class makes a message to send to application layer to notify it to stop receiving messages from 2nd application till the datalink socket is up again. sometimes the socket goes up and down very quickly like there is a glitch for 2-3 sec and in this case I don't want to report any socket disconnection to application layer. to summerize:
in datalink layer:
Socket 1 is down -> send socket status to manager class, Manager class should start a timer and if within 15 seconds the status of the socket remained the same, make the message for socket 1 and send it to application layer. (if the status changed to down and up within 15 seconds do not send any message to application layer)
the problem is my application is always sending and receiving messages and can't pause for a period of time.
How can I add this timer just for the socket down/up message that wouldn't trigger other application's process?

Thanks,

Chan

Re: How to put a timer in an OSI model application

«_Superman_»4-Dec-09 4:37

«_Superman_»

4-Dec-09 4:37

You can use a waitable timer to do this with calls like CreateWaitableTimer/SetWaitableTimer.
You can then wait on this timer using a wait function like WaitForSingleObject.
You will need to wait in a separate thread if you don't want to block your main thread.

Take a look at this sample - Using Waitable Timer Objects[^]

«_Superman_»
I love work. It gives me something to do between weekends.

Microsoft MVP (Visual C++)

Re: How to put a timer in an OSI model application

chan114-Dec-09 5:25

chan11

4-Dec-09 5:25

Thanks a lot, I'll see what I can do but I already have many threads and adding one more makes things very mess.

regards,

Chan

Re: How to put a timer in an OSI model application

Moak8-Dec-09 11:56

Moak

8-Dec-09 11:56

Sounds not like a coding problem but a design problem.

If I understood correctly... in some way you want to add a timer functionality to your application logic. There are many ways to achieve this and it depends on your current design/architecture. If your application is event based you can use timer events (e.g. WM_TIMER), if it is multi-threaded you can introduce a dedicated timer thread, if you use a 3rd party networking class it might offers some kind of timer.

In my applications I use a networking class that provides 1Hz timers and I use it for all kind of things, from timeouts to bandwidth limitations.

Hope it helps, M

Webchat in Europe Java | [Coffee]

(only 4K)

serial port program

shanmugarajaa4-Dec-09 1:05

shanmugarajaa

4-Dec-09 1:05

hi friends,
i designed to get value from combobox like "com port, baudrate, party,time interval". after user selecting all parmeter and press button "connect" for example data =0x47,comport=com1, baudrate=9600,party=2 etc.. and sent to serial port then i should get 47
in the list box.
void CKeytestDlg::OpenPort( )
{
int i;

i = m_comport.GetCurSel();

m_Comm.SetCommPort(i+1);

for(i=0;i<4;i++)
if( i == m_bardrate.GetCurSel() )
{
m_bardrate.GetWindowText(baudrate);
}
if(baudrate == "2400" )
{
m_Comm.SetSettings ("2400,N,8,2");

}
if(baudrate == "4800")
{
m_Comm.SetSettings ("4800,N,8,2");

}
else
{
m_Comm.SetSettings ("9600,N,8,2");

}
m_Comm.SetInputMode (1); // Binary mode
m_Comm.SetPortOpen (TRUE); // Open it

}

void CKeytestDlg::OnButton1()
{
// TODO: Add your control notification handler code here
OpenPort();

CByteArray btArray;
BYTE bID;
bID = 0x47;
btArray.Add (bID); //Identifier byte
// btArray.Add (/*0x30);//*/bByte1); // DataByte 1

COleVariant var(btArray);
m_Comm.SetOutput(var); // Send the data.
m_Comm.SetPortOpen(FALSE);

}

plz kindly help me WTF | :WTF:

Re: serial port program

David Crow4-Dec-09 3:10

David Crow

4-Dec-09 3:10

shanmugarajaa wrote:
plz kindly help me

With what?

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

MFC Dialog box

amit10i4-Dec-09 0:28

amit10i

4-Dec-09 0:28

I am making a dialog based application , i want to disable the maximize
button , when i disable the maximize button from resources check box for maximize button , gui window hides the task bar of windows , how can i disable maximize without hiding task bar .

Re: MFC Dialog box

David Crow4-Dec-09 3:12

David Crow

4-Dec-09 3:12

amit10i wrote:
I am making a dialog based application , i want to disable the maximize button...

Disable or remove?

amit10i wrote:
...when i disable the maximize button from resources check box for maximize button , gui window hides the task bar of windows...

Are you referring to the dialog's title bar?

Re: MFC Dialog box

amit10i6-Dec-09 22:40

amit10i

6-Dec-09 22:40

yes i am referring to dialog's title bar,
either disable or remove , anything will suffice , preferably removing the maximize button ,

Re: MFC Dialog box

David Crow7-Dec-09 2:53

David Crow

7-Dec-09 2:53

amit10i wrote:
preferably removing the maximize button ,

How about removing the WS_MAXIMIZEBOX style?

EXCEL.EXE is not getting killed

KTTransfer3-Dec-09 22:55

KTTransfer

3-Dec-09 22:55

I am working on Excel automation using VC++(unmanaged).

Following are the two issues:

1. Whenever Excel is closed , Excel.EXE is not getting closed.

My application should track opening and closing of Excel.

I released application pointer(Excel::_ApplicationPtr) but same problem.

I googled and got few solutions, but nothing worked.

I tried :

Excel::_ApplicationPtr XL.

XL->Quit();
XL->Release();
XL = NULL;

but none of these worked.

2. Is there any callback which tracks excel.exe is closed?

Please give me clue to solve these issues.

Regards,
KTTransfer.

Re: EXCEL.EXE is not getting killed

Madhu Nair3-Dec-09 23:45

Madhu Nair

3-Dec-09 23:45

Just try this - Set the 'Visible' property to TRUE and then call Quit method.
-- Its a guess, if not worked, you may have to find the EXCEL process and terminate the process using TerminateProcess function.

Re: EXCEL.EXE is not getting killed

T21024-Dec-09 3:17

T2102

4-Dec-09 3:17

Are you calling GC.Collect()?

Re: EXCEL.EXE is not getting killed

David Crow4-Dec-09 3:33

David Crow

4-Dec-09 3:33

It must have something to do with the way you are accessing Excel's type library. I've got several Excel automation projects that close Excel just fine. The only difference is that they don't use the #import directive. The one that does use #import simply calls app->Quit().

Re: EXCEL.EXE is not getting killed

T21024-Dec-09 3:57

T2102

4-Dec-09 3:57

Again see below... I have had this error before. I have code to controls add-in installation to avoid warnings from one xla referencing another.

// The following line is necessary to be sure that app object is released when we finish, because
// the Garbage Collector is non-deterministic and by default can leave app unreleased.
System::GC::Collect();
System::GC::WaitForPendingFinalizers(); //GetActiveObject Error is this line is excluded

Re: EXCEL.EXE is not getting killed

David Crow4-Dec-09 4:02

David Crow

4-Dec-09 4:02

This is managed code. I think the OP is using unmanaged code.

Re: EXCEL.EXE is not getting killed

T21024-Dec-09 12:40

T2102

4-Dec-09 12:40

Then are you using the following?

//Release the no-longer-needed IUnknown...
if (pUnk)
pUnk->Release();

//... Add your automation code for Excel here ...

//Release pDisp when no longer needed...
if (pDisp)
pDisp->Release();

//Cleanup COM...
CoUninitialize();

Re: EXCEL.EXE is not getting killed

David Crow5-Dec-09 5:40

David Crow

5-Dec-09 5:40

Ted2102 wrote:
Then are you using the following?

No, I use smart pointers whenever possible.

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