C / C++ / MFC

25-Nov-02 5:55

Override OnCreate (+OnInitDialog for guarantee) in your DialogBar. Set breakpoints at end of functions. Make sure that your TreeCtrl has been created (m_hWnd!=NULL). Just in case try to use GetDlgItem to obtain CTreeCtrl* pointer and check its m_hWnd.

If ASSERT or exception raises earlier than you rich these breakpoints, you, it seems, have raise conditions

Show us a fragment of code which refuses to run
After all, try to rebuild all Smile | :)

Getting Char Index

brianwelsch25-Nov-02 4:22

brianwelsch

25-Nov-02 4:22

I've got an EditView, and want to show Row/Col in the Status bar. I can get the Row, but Column isn't quite right.

int	nCol = LOWORD(GetEditCtrl().CharFromPos(ptCaret))
				- (GetEditCtrl().LineIndex(nRow-1));

This works until the caret isn't visible anymore. (ie. user scrolls right/left w/o updating caret pos.) When this happens I get some bogus value in the 65000 range.

Is their a better way to get this info? Confused | :confused:

BW
"I'm coming with you! I got you fired, it's the least I can do. Well, the least I could do is absolutely nothing, but I'll go you one better and come along!"
- Homer J. Simpson

Re: Getting Char Index

Roman Fadeyev25-Nov-02 5:00

Changing Colour in CDocument

25-Nov-02 5:00

Are you intend to show position of caret? For current position it will look like that

//for retrieve nCharPos use EM_GETSEL
nLine = SendMessage(xxx, EM_LINEFROMCHAR, nCharPos, 0);
nCol = nCharPos - SendMessage(xxxx, EM_LINEINDEX, -1, 0);

I don't remember whether respective wrapper functions exist in MFC therefore I wrote it in API

Sockets and Threads

ballyduff25-Nov-02 4:14

ballyduff

25-Nov-02 4:14

Iam writing a connection-oriented sockets to write a simple client/server application. The objective of is to develop a client which inputs a string, sends it to a server program, the server program calculates character statistics on the inputted text, sends these back to the client and the client displays these results.

I have the client, server ,threads protocol wirtten in java and its working fine but i have to convert that into C++.

I was just wondering how to you create sockets and threads in C++

Re: Sockets and Threads

valikac25-Nov-02 9:02

valikac

25-Nov-02 9:02

I assume you are developing the application for Windows.

Consider Winsock. I recommend Network Programming for Microsoft Windows, Second Edition by Anthony Jones and Jim Ohmund.

For Windows multithreading applications, I recommend Programming Applications for Microsoft Windows by Jeffrey Richter.

Kuphryn

Text editor

Rage25-Nov-02 4:04

Rage

25-Nov-02 4:04

Hi,

I'm looking for the source code of a text editor like notepad... do we have something like that on CP ? (I looked for it by myself and did not find anything in the samples Hmmm | :|

...)

Thanks,

~RaGE();

Re: Text editor

brianwelsch25-Nov-02 4:27

brianwelsch

25-Nov-02 4:27

Have you looked at this?

Crystal Edit[^]

BW
"I'm coming with you! I got you fired, it's the least I can do. Well, the least I could do is absolutely nothing, but I'll go you one better and come along!"
- Homer J. Simpson

Re: Text editor

Jeff Patterson25-Nov-02 7:14

Jeff Patterson

25-Nov-02 7:14

It may be more then you are looking for but MSDN has the source code for WordPad available Here

Jeff Patterson

Programmers speak in Code.
http://www.anti-dmca.org

Re: Text editor

Rage25-Nov-02 20:26

Rage

25-Nov-02 20:26

Jeff Patterson wrote:
MSDN has the source code for WordPad available

Well, didn't know about that ... thanks a lot, Jeff.

~RaGE();

E325-Nov-02 3:53

25-Nov-02 3:53

Hi all,

Dose any body known how to change the color of mydoc in MDI program. I have created an Rich Text Control in the Mydoc and i set the rect to 40 pixals in so their is a space between the start of the my doc and i want to colour in that because it white and i want gray colour i trying to make it look like Visual C++ the code window so i could have line count beside the richtext box or do i have to do something different? I new at this Visaul C++ so could any body please send me on the right track.

thanks an lot
Smile | :)

Re: Changing Colour in CDocument

Roman Fadeyev25-Nov-02 4:07

Opening URL in default browser

25-Nov-02 4:07

Try to use WM_ERASEBKGND message. Default handler paints window client area with color COLOR_WINDOW, and you can add own painting routine to cover over rect with gray.

Document View

wimel26-Nov-02 2:49

wimel

26-Nov-02 2:49

Try to read something about Doc-view architecture.
Normally your document only contains the data.
In your views you represent the data (text of graph or something else)

D.W.

mariuszpopiolek25-Nov-02 3:30

25-Nov-02 3:30

Hi
I've tried this:

ShellExecute(0, NULL, m_sSomeURL, NULL, NULL, SW_NORMAL);

It works, but when browser is already opened, my URL is loaded in existing window, instead of opening new window (or new instance) of default browser. Such behavour is quite annoying, so the question is how can I avoid this? Thanks in advance for any help.

Mariusz Popiolek

dabs25-Nov-02 3:45

dabs

25-Nov-02 3:45

This can be avoided by specifying the full path to the browser executable in the fourth parameter to ShellExecute( ). This means you would have to look up what is the default browser yourself. I don't have the code to do that at hand at the moment. If you want to force users to use Internet Explorer you could of course just use "iexplore.exe" Smile | :)

Wenn ist das Nunstück git und Slotermeyer? Ja! Beierhund das oder die Flipperwaldt gersput!

mariuszpopiolek25-Nov-02 4:09

25-Nov-02 4:09

So I have to find out default browser executable somewhere in the registry(maybe someone can give me some hint?). Thanks for help.

Mariusz Popiolek

Roman Fadeyev25-Nov-02 3:59

25-Nov-02 3:59

I suppose you use IE. If I am right, you can change this behavior by settings checkbox in IE properties. ..mmm... something like as "use same window for shortcuts" or nearby

mariuszpopiolek25-Nov-02 4:11

25-Nov-02 4:11

It has to be done using VC code, so your solution is not good in my situation, but of course thanks for trying to help.

Mariusz Popiolek

Stephane Rodriguez.25-Nov-02 6:34

Stephane Rodriguez.

25-Nov-02 6:34

Use the opennew DDE verb instead of open. ( 2nd parameter of ::ShellExecute() ).

mariuszpopiolek25-Nov-02 8:28

25-Nov-02 8:28

I'm affraid that it does nothing:

ShellExecute(0, "opennew", m_sSomeURL, NULL, NULL, SW_NORMAL);

After executing such code nothing happens.
I tried to find (via search option) verb opennew in MSDN, but I haven't found anything connected with shellexecute

Mariusz Popiolek

Stephane Rodriguez.25-Nov-02 8:53

Stephane Rodriguez.

25-Nov-02 8:53

mariuszpopiolek wrote:
I tried to find (via search option) verb opennew in MSDN, but I haven't found anything connected with shellexecute

Open the windows explorer \ tools \ folder options \ file types. Then find the .HTML filetype, and click on Advanced. This should open the file association window with the list of known verbs for the .HTML extension. And there you should find open and opennew.

That's how things work underneath.

The assumption for the use of these verbs is you know the file extension of the url. If you don't, this won't work as expected.

You also have another solution : start a new default iexplore.exe instance (createprocess). Wait this process is running. Then do the ::ShellExecute. The document will open on the newly created process.

mariuszpopiolek25-Nov-02 9:26