Callback Routine Not Getting Triggered - C / C++ / MFC Discussion Boards

Re: Real time data server client

bulg3-Apr-09 6:49

bulg

3-Apr-09 6:49

can you run that by me again? did you want a server or a client?

Re: Real time data server client

sashoalm4-Apr-09 2:46

sashoalm

4-Apr-09 2:46

or an excel sheet?

There is sufficient light for those who desire to see, and there is sufficient darkness for those of a contrary disposition.
Blaise Pascal

String Table of Resources

prithaa2-Apr-09 21:08

prithaa

2-Apr-09 21:08

Hello

I have a menu in the resource table with the default identifiers in the string table. But when I add a new menu item in the menu with a new identifier in a string table that menu item is displayed inactive.

Now if I change the identifier to the existing identifiers in the string
table which are not added by me then the menu item is active.

How to add new item in the string table

Prithaa

Re: String Table of Resources

Nelek2-Apr-09 21:32

Nelek

2-Apr-09 21:32

MFC or Non-MFC?

How are you doing it? Can you give a bit more info and/or a snippet of your string table?

Regards.
--------
M.D.V. Wink | ;)

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
“The First Rule of Program Optimization: Don't do it. The Second Rule of Program Optimization (for experts only!): Don't do it yet.” - Michael A. Jackson
Rating helpfull answers is nice, but saying thanks can be even nicer.

Re: String Table of Resources

prithaa2-Apr-09 21:55

prithaa

2-Apr-09 21:55

Hello,

Thanks for your reply
I have made a project in VC++ with MFC without Doc-View architecture.

I added a string in the string table and used the same string for menu item.

Prithaa

Re: String Table of Resources

Niklas L2-Apr-09 23:25

Niklas L

2-Apr-09 23:25

If you don't have a message handler the menu item will be disabled by default. You might also want an OnUpdate* handler to set the active state depending on a condition.

In the resource editor, right-click the item and select"Add Event Handler" (or something similar in your VS version)

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Re: String Table of Resources

prithaa5-Apr-09 17:26

prithaa

5-Apr-09 17:26

Hello

Thanks for your reply

Callback Routine Not Getting Triggered

ExtraLean2-Apr-09 21:03

ExtraLean

2-Apr-09 21:03

I've created a very simple one-button MFC dialog app that attempts to utilize a callback function. The app complies and runs just fine, but the callback routine never gets triggered.

What needs to be modified in order to get the callback to trigger properly?

You can download the test.zip file here (the test app is in VS 2003 to ensure more people can try it out): http://tinyurl.com/testfile-zip

The code utilizes an alarm class posted here on CodeProject, and the callback function in the test app is suppsed to get triggered every 3 seconds (as determined by the code being passed in).

Thanks!

--
Edward Livingston
(aka ExtraLean)
--
"I still maintain that seeing a nipple is far less disturbing than seeing someone get their brains blown out." -- Chris Maunder

Re: Callback Routine Not Getting Triggered

Stuart Dootson2-Apr-09 21:44

Stuart Dootson

2-Apr-09 21:44

ExtraLean wrote:
The code utilizes an alarm class posted here on CodeProject

Why not post a message on that article's message thread?

[edit]Also - you've got the source yourself - break out the debugger and try tracing through the source[/edit]

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

named pipe sample

AshNis2-Apr-09 19:49

AshNis

2-Apr-09 19:49

i have some problem like when i communicate between application i need through pipe its happened
and another problem like when i read and write through pipe its not happened properly
can any body help me

Re: named pipe sample

Cedric Moonen2-Apr-09 20:34

Cedric Moonen

2-Apr-09 20:34

AshNis wrote:
can any body help me

If you provide enough information, then maybe. Anyway, with the information (lack of information would be a better word I guess) you provided here, nobody will be help to help you...

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

Re: named pipe sample

Iain Clarke, Warrior Programmer3-Apr-09 0:52

Iain Clarke, Warrior Programmer

3-Apr-09 0:52

As Cedric said, you've not really given us anything to help you with.

I did a named pipe application (accurately, two applications!) using named pipes, and I just followed the samples on MSDN in the documentation.

Both from MSDN:
Multithreaded Pipe Server[^]
Named Pipe Client[^]

Enjoy!

One problem I had was making a named pipe accessible across the network by any user.

DWORD	CNamedPipeServer::ServerThread ()
{
	// Set up security attributes so anyone can login.
	SECURITY_ATTRIBUTES sa;
	SECURITY_DESCRIPTOR	sd;

	if (!InitializeSecurityDescriptor (&sd, SECURITY_DESCRIPTOR_REVISION))
		return 0; //MSG_PIPE_CREATE_FAILED;
	SetSecurityDescriptorDacl (&sd, TRUE, NULL, FALSE);

	sa.nLength = sizeof (sa);
	sa.bInheritHandle = FALSE;
	sa.lpSecurityDescriptor = &sd;
	BOOL	bLog = FALSE;

	// Create pipe
	char	pipename [512];
	lstrcpy (pipename, "\\\\.\\pipe\\");
	lstrcat (pipename, m_PipeName);

	m_hPipe = ::CreateNamedPipe (pipename,
		PIPE_ACCESS_DUPLEX | FILE_FLAG_WRITE_THROUGH | FILE_FLAG_OVERLAPPED,
		PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | PIPE_WAIT,
		1, 0, 0, 100000, &sa);

You don't have to use overlapped I/O - but it fitted my application. Just note the sa and sd variables.

Good luck,

Iain.

In the process of moving to Sweden for love (awwww).
If you're in Scandinavia and want an MVP on the payroll (or happy with a remote worker), give me a job!

Space in EDIT BOX

MsmVc2-Apr-09 19:45

MsmVc

2-Apr-09 19:45

Hi All

How can i prevent to enter space in Edit box?

Re: Space in EDIT BOX

_AnsHUMAN_ 2-Apr-09 22:22

_AnsHUMAN_

2-Apr-09 22:22

Check EN_CHANGE notification. Get the string from the edit box and store it if it does not contain space. When the user changes the string by entering a char, take the updated string and check if there is a space. If affirmative, replace the string with the old one that did not have space.
Hope this helps

You need to google first, if you have "It's urgent please" mentioned in your question.
Wink | ;-)

_AnShUmAn_

Re: Space in EDIT BOX

qihuanfengyun3-Apr-09 2:30

qihuanfengyun

3-Apr-09 2:30

hi,I'm sorry i dot not know!

Re: Space in EDIT BOX

Niklas L2-Apr-09 23:16

Niklas L

2-Apr-09 23:16

Either subclass your own edit control and do the filtering there, or be lazy and search and download source for a masked edit control. There are plenty of those around on a website near you.

Edit: Spelling

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Reading from fstream in CString object

Anuj Sharma2-Apr-09 18:53

Anuj Sharma

2-Apr-09 18:53

can anybody explain how can i read from a file in CString onject using fstream.
CString str
fstream fin
fin.open(^);
fin.read((char *)str.GetBuffer(0),str.GetLength()* sizeof(TCHAR));
fin.close

this code is not working while m able to write the same way in file but not able to read
fin.write((char *)str.GetBuffer(0),str.GetLength()*sizeof(TCHAR));

plz help thank u

Re: Reading from fstream in CString object

«_Superman_»2-Apr-09 19:05

«_Superman_»

2-Apr-09 19:05

You must specify a proper length .
How many bytes do you want to read?

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

Re: Reading from fstream in CString object

Anuj Sharma2-Apr-09 19:24

Anuj Sharma

2-Apr-09 19:24

well i cant depict that before as it is a path.and may change in my application. so i dont knw about its length

Re: Reading from fstream in CString object

«_Superman_»2-Apr-09 19:30

«_Superman_»

2-Apr-09 19:30

You have to specify a length.
That is why that parameter exists in the read function.

I think you should first read it using a normal array. (Without CString).

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

Re: Reading from fstream in CString object

Stuart Dootson2-Apr-09 21:24

Stuart Dootson

2-Apr-09 21:24

In that case, you should probably read a character at a time, adding them to the CString, until you reach some character that indicates the end of the path.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: Reading from fstream in CString object

krmed3-Apr-09 0:47

krmed

3-Apr-09 0:47

Two things I see, your read:

fin.read((char *)str.GetBuffer(0),str.GetLength()* sizeof(TCHAR));

str.GetLength() in this case will be 0 since the string is empty, so you're telling the read to get 0 characters!

You most likely know the maximum size you need, in which case you can use something like

fin.read((char *)str.GetBuffer(1024),1024 * sizeof(TCHAR));

You must also call str.ReleaseBuffer(), and if the data you read is not null terminated, you'll need to set the length by using

str.ReleaseBuffer(iBytesRead);

Hope that helps.

Karl - WK5M
PP-ASEL-IA (N43CS)
PGP Key: 0xDB02E193
PGP Key Fingerprint: 8F06 5A2E 2735 892B 821C 871A 0411 94EA DB02 E193

PopupDailog steal the current focus

S p k 5212-Apr-09 18:13

S p k 521

2-Apr-09 18:13

Hi All,

I am creating one popupdialog from mainwindow. The dialog gets poppedup and iam using one timer function to popup. I am using one edit control in mainwindow . My problem is after getting poppedup the focus on the main window loses and also on the edit control in mainwindow. How to avoid this stealing of focus by a popup dialog??

Regards,
Spk

How can I paste data to other windows (who ever is accepting) ? [modified]

Yovav2-Apr-09 17:07

Yovav

2-Apr-09 17:07

When I click a hot key combination (Ctrl+Shift+P) my program do copy some text to the clibboard,

So I can paste it to any window by holding Ctrl+V

Now I like to automate this and be able to do the Ctrl+V programatically,

Lets assume I just want to paste just anything to other windows - so I can get started,

I have tried this, but I guess I'm missing something:

SendMessage(WM_PASTE, 0,0);

also tried:

BroadcastSystemMessage(BSF_POSTMESSAGE | BSF_IGNORECURRENTTASK,
BSM_ALLCOMPONENTS,
WM_PASTE,
(WPARAM)NULL,
(LPARAM)NULL);

I'd like to broadcast a "paste" message (or "Ctrl+V") so I will not have to find the current active window and get its focus,

Any suggestions ?

Best Regards - Yovav Gad
CEO and founder of MicroMighty, Inc.

modified on Thursday, April 2, 2009 11:58 PM

Re: How can I paste data to other windows (who ever is accepting) ?

Niklas L2-Apr-09 23:02

Niklas L

2-Apr-09 23:02

I tried something similar a few yeras back to aid in filling in forms that required the same data over and over, and as far as I can remember, different applications needed different handling. You have to try sending keystrokes to some, and WM_PASTE to some, and some applications do not even use a window, but a custom made input and cannot be manipulated at all.

Sorry, but to my knowledge there is no universal method that works everywhere.

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