IEEE 754 to string - C / C++ / MFC Discussion Boards

Derek Waters16-Sep-01 14:45

16-Sep-01 14:45

Yep. At least, that is my belief, without wanting to 100%, no doubt, absolutely stake my life on the behaviour of Visual C++...

------------------------
Derek Waters
derek@lj-oz.com

Re: How do I remove a function in ATL ?

Christian Graus16-Sep-01 14:56

Christian Graus

16-Sep-01 14:56

Thanks for the help - I'll backup my project tonight and give that a try.

Christian

As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet.

Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery.

Re: How do I remove a function in ATL ?

asfas16-Sep-01 23:33

asfas

16-Sep-01 23:33

(1) Remove the function declaration from the IDL file
(2) Remove the function declaration from the implementation class
(3) Remove the function implementation from the implementation class
(4) Rebuild the project

Mohamed Mabrouk

Scrolling CEdit

Jake Palmer15-Sep-01 11:57

Jake Palmer

15-Sep-01 11:57

hi everyone,
I want my CEdit to scroll to the bottom after a call to SetWindowText. The following code updates the scroll bar, so it looks like it's at the bottom, but the edit actually remains unscrolled:

int max = m_edit.GetScrollLimit(SB_VERT);
m_edit.SetScrollPos(SB_VERT, max, TRUE);

I had the same results with GetScrollRange. What is the right way to scroll the edit?
thanks,
Jake

*****
Jake Palmer

www.duke.edu/~jp6

Re: Scrolling CEdit

Paolo Messina15-Sep-01 12:47

Paolo Messina

15-Sep-01 12:47

Hi,

I used this function in a CEdit-derived class:

void CChatEdit::AddString(LPCTSTR str)
{
	CString tmp;
	GetWindowText(tmp);

	if (!tmp.IsEmpty())
		tmp += "\r\n";

	tmp += str;
	SetWindowText(tmp);

	LineScroll(GetLineCount());
		
}

To add a line of text and scroll to the bottom.
I hope it works for you too Smile | :)

(you never know)

Paolo

------
"airplane is cool, but space shuttle is even better" (J. Kaczorowski)

CDialog are real time log

15-Sep-01 11:29

Netmeisters,

I am relatively new to Windows programming, so my
apologies if the following problem has an obvious solution.

I would like to use a CEdit control in a CDialog as a log,
recording events that occur during a syncing process over
a network. (As it happens this is for a Pocket PC but I
think the question applies equally to all forms of
Windows). The syncing process should start automatically
as soon as the CDialog is opened, and lines are added to
the CEdit to describe the progress of the sync. Currently
the sync process is invoked by a message handler that
responds to the WM_INITDIALOG message. The problem with
this is that the whole log gets written (ie the CEdit is
completely filled) before the CDialog is displayed, so
that the user gets a log, but can only see it after the
sync is completely done (whereas I'd like him to be able
to follow the sync as it occurs).

My question is, is there another message I could use,
which gets triggered AFTER the CDialog is displayed,
rather than just before? Then all I would have to do is
invoke my sync in a message handler responding to this
message, rather than WM_INITDIALOG.

The only other approach I can think of would require the
creation of a second thread, and I've got to think there
is an easier way.

Your assistance much appreciated,

Matthew Fleming
mgf@mcw.edu

Re: CDialog are real time log

Paolo Messina15-Sep-01 12:58

Paolo Messina

15-Sep-01 12:58

Hi,

A simple solution could be posting a custom message to the dialog, and starting the syncing process in response to that message instead of WM_INITDIALOG.
Something like:

#define WMU_STARTSYNC (WM_USER+123)  // or register one with RegisterWindowMessage()

CMyDialog::OnInitDialog()
{
   PostMessage(WMU_STARTSYNC);
   ...
}

CMyDialog::OnStartSync()
{
   ...
}

Posted message will be handled after all the messages in the queue get handled, so hopefully after the dialog is displayed (surely after WM_INITDIALOG).

You may also force the dialog to be visible with ShowWindow(SW_SHOW) in OnInitDialog(), but the dialog won't be centered (try CenterWindow() to fix that).

Cheers,
Paolo

------
"airplane is cool, but space shuttle is even better" (J. Kaczorowski)

IEEE 754 to string

Erik Hammar15-Sep-01 10:50

Erik Hammar

15-Sep-01 10:50

Hi,
Does anybody have some C routines for converting 32- and 64-bit IEEE 754 numbers to strings?
Thanks!
Erik

Re: IEEE 754 to string

Anders Molin15-Sep-01 13:22

Anders Molin

15-Sep-01 13:22

_gcvt() should do the trick (at least for 32-bit numbers)

- Anders

Money talks, but all mine ever says is "Goodbye!"

Office 2000 Style Report Control

Giles15-Sep-01 8:42

Giles

15-Sep-01 8:42

Has anyone had a look at Maarten Hoeben's List Control. I've got it working, in both a Dialog, and a Child Window in the MDI app, but, I cannot gee the preview feature to work in the MDI window. Any ideas on what is different from the Dialog example given.

http://www.codeproject.com/miscctrl/reportctrl.asp

Thanks,

Giles

Developing an NT Service with MFC

mantrashrim14-Sep-01 14:01

mantrashrim

14-Sep-01 14:01

This service is required to listen on a port for incoming requests from
various clients. My programming experience with sockets is centered around
the MFC CSocket class. It appears after several hours of tests that CSocket
is not supported in an NT Service (or I need to jump through some hoops I have not found yet).

Any Assistance would be appreciated Confused | :confused:

mantrashrim

Re: Developing an NT Service with MFC

Tim Deveaux14-Sep-01 14:14

Tim Deveaux

14-Sep-01 14:14

Just off the top of my head, MFC and services are not a recommended mix, but I _think_ there is information in an article by P.J. Naughter dealing with creating a service using MFC - not sure if its in with the stuff on site, or if it targets your issue, but maybe a useful read.

As for CSocket/service incompatibility, not sure... I'd think you could at least put the CSocket stuff off in a DLL - if there's docs on this problem I'd like to see 'em.

Re: Developing an NT Service with MFC

Giles15-Sep-01 8:29

Giles

15-Sep-01 8:29

As you guessed, CSocket does not work with Services because of the way it is tied into the MFC event hadling system.

As Tim said, PJ Naughter has a CScocket class which does work, as well as that he has also derived a number of other protocols from it such as SMTP, POP3 etc to be used from an MFC app or a Service.

I recommend looking at Programming Server Side Applications for Windows 200- by Jeffery Richter. All about Services, and things like IO Completion prots to make apps handle large loads with ease.

Giles

Re: Developing an NT Service with MFC

Anders Molin15-Sep-01 9:01

Anders Molin

15-Sep-01 9:01

I recommend looking at Programming Server Side Applications for Windows 200- by Jeffery Richter. All about Services, and things like IO Completion prots to make apps handle large loads with ease.

Yea, it's a great book. But when programming socket, I like "Network Programming for Microsoft Windows" even more...

- Anders

Money talks, but all mine ever says is "Goodbye!"

Re: Developing an NT Service with MFC

Giles16-Sep-01 11:45

Giles

16-Sep-01 11:45

Hi Anders,

Yep, got a copy of that as well. Great book, with loads of detail. I did not want to start thowing the library at him though. I must say that the MS Press books are really well written, and well produced. I have never been disapointed with any of those I have bought.

I've been experimenting with PERL over the past couple of months, and was on a 4 day course for it last week. It was great to be able to write an Echo server in 3 lines. Made me laugh. I'm now a convert after being a sceptic.

It made me think, C++ for the performace stuff, and PERL for every thing else. Its made me realise that despite JAVA being a modern langugae, it is such a pile of s$@t!

Giles

Re: Developing an NT Service with MFC

User 988515-Sep-01 11:50

User 9885

15-Sep-01 11:50

I am not answering your question regarding CSocket. I am not familiar with CSocket - so I do not know. But, I have written many services with socket support.

The best mechanism is to use the IOCompletion port. There is an article titled "Writing scalable servers using IOCompletionport". This demonstrates a server with a Win32 console application. It should be fairly easy for you to convert this into a service.

- Thomas

modified 29-Aug-18 21:01pm.

Re: Developing an NT Service with MFC

mantrashrim17-Sep-01 5:38

mantrashrim

17-Sep-01 5:38

Thanks to all of your for your responses... I will be picking up the books mentioned....

speak to you all soon

mantrashrim

Hotkey problem

User 988514-Sep-01 11:09

User 9885

14-Sep-01 11:09

I am using Alt+F1 as a hotkey to bring up a dialog box. The problem that I am facing is that many times the new dialog that comes up gets the "Alt" and the focus is on the system menu of the window. Is there any way, I can avoid this problem? The hotkey is configurable, so not using 'Alt' is not an option in this case.

-Thomas

modified 29-Aug-18 21:01pm.

BringWindowToTop

Chris Klecker14-Sep-01 10:43

Chris Klecker

14-Sep-01 10:43

Hey hey hey! I'm trying to run the function BringWindowToTop. Finding that it's not working the way I intended.

I have this function in the Update method within the View Class. I call it from the MainFrame class.

Here's the setup. I have a file list view docked in the main application window that a user can click on existing opened files. They click on a file and the window should come to front. I am finding the right document and calling the proper View class from the document, however it seems the BringWindowToFront is not Brining the Window To the Top. (sorry)

Might there be more that one needs to do in order to successfully get the effect I'm looking for?

Thanks!
Confused | :confused:

"Why are we hiding from the police, Daddy?"
"We use VI, son. They use Emacs."

Re: BringWindowToTop

Paolo Messina15-Sep-01 13:05

Paolo Messina

15-Sep-01 13:05

Hi,

A View window is a child window of its parent frame. I think you should call BringWindowToTop to the frame, not the view.
Something like:

wndMyView->GetParent()->BringWindowToTop();

Not sure, however. Smile | :)

Paolo

------
"airplane is cool, but space shuttle is even better" (J. Kaczorowski)

Re: BringWindowToTop

Chris Klecker17-Sep-01 3:38

Chris Klecker

17-Sep-01 3:38

I found my older code on this where I write

GetParentFrame()->BringWindowToTop();

I knew I wrote this sometime. =)

Thanks for the help though!

Chris

"Why are we hiding from the police, Daddy?"
"We use VI, son. They use Emacs."

Dynamic bitmap

SnapRick14-Sep-01 9:17

SnapRick

14-Sep-01 9:17

Is there a way to dynamically write partially to a bitmap? I would like to create a bitmap, but only part of the bitmap five characters may need to change. How can I alter the bitmap to rewrite only those five characters????

Any help would be greatly appreciated Confused | :confused:

Thank-you
Sincerely,
RAH

Re: Dynamic bitmap

Remi Morin14-Sep-01 10:23

Remi Morin

14-Sep-01 10:23

It's the bitmap or it's name???

because if it's the bitmap, the picture itself, you just create a dc
WritePartialyOnABitmap(CBitmap * paramBitmap)
{
CRect RectTemp;
CDC tempBitmapDc;
BITMAP bm;
CBitmap* oldBitmap;

tempBitmapDc.CreateCompatibleDC(NULL);

paramBitmap->GetBitmap(&bm);
oldBitmap = tempBitmapDc.SelectObject(paramBitmap);
tempBitmapDc.TextOut(.......
tempBitmapDc.MoveTo(x,y...
tempBitmapDc.LineTo(...

//everything you wan't to do whit this bitmap then
//select the old bitmap the dc give to you at the beginning
tempBitmapDc.SelectObject(oldBitmap);
}

Remi Morin
Rmorin@Operamail.com
Remi.Morin@Lyrtech.com
Les armes ne tuent point, seul une petite minorité le fait

How can I know that the mouse is/is not over my control

Remi Morin14-Sep-01 9:00

Remi Morin

14-Sep-01 9:00

I have a custom control, and the user can click and move an item on my control, but if the mouse go outside the control... I can't do anything.
How can we control that.

(my class is derived from cwnd)

Remi Morin
Rmorin@Operamail.com
Remi.Morin@Lyrtech.com

Re: How can I know that the mouse is/is not over my control

14-Sep-01 9:08

check for WM_NCMOUSEMOVE; (non-client mousemove messages)

or, you can call SetCapture to cage the beast to your control.

You can also use GetCapture and ReleaseCapture to ensure that you recieve all of the mouse messages, if you are the greedy type.

Suspicious | :suss:

Darin Rousseau
http://www.rinlex.com/fssi/development/
darin@rinlex.com

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