Re: CHeaderCtrl messages - C / C++ / MFC Discussion Boards

Re: how to create CEdits on the fly?

Mazdak10-Aug-02 19:45

Mazdak

10-Aug-02 19:45

From MSDN:

// dynamically create an edit control on the view
CEdit* pEdit = new CEdit;
pEdit->Create(ES_MULTILINE | WS_CHILD | WS_VISIBLE | WS_TABSTOP | WS_BORDER,
   CRect(10, 10, 100, 100), this, 1);

For others you have to do the same.

Mazy

"If I go crazy then will you still
Call me Superman
If I’m alive and well, will you be
There holding my hand
I’ll keep you by my side with
My superhuman might
Kryptonite"Kryptonite-3 Doors Down

Clear Screen in Console App

John Croucher10-Aug-02 17:50

John Croucher

10-Aug-02 17:50

Hello,
I was wondering if anyone knows how to clear the screen in a Visual C++ Console Application.
I need to be able to do this for a part of a project in my C++ course. My lecturer doesn't even know how to clear the screen. He just suggested using lots of "\n", but there has to be a better way??

Thanks.

_______________________________________
Web: www.jcroucher.com
Sonork: 100.472
ICQ: 25902350
MSN: jcroucher@yahoo.com
Yahoo: jcroucher@yahoo.com
----------KnOwLeDgE iS pOwEr-----------

Re: Clear Screen in Console App

Nick Parker10-Aug-02 18:00

Nick Parker

10-Aug-02 18:00

Well, this does work:

void ClearScreen()
{
    int i;
    for(i = 0;i < 24;i++)
    {
        cout << "\n";
    }
}

I think there is another way, however I haven't seen it for a long time, maybe someone else can post as I am curious now that you bring the subject up.

Nick Parker

Re: Clear Screen in Console App

John Croucher10-Aug-02 18:10

John Croucher

10-Aug-02 18:10

Yeah that does work but the prob is that any new text placed on the screen will start at the bottom of the screen.

I did find this code that is suposed to work but its not clearing the screen.

#include <stdlib.h>

system("CLS");

However i did change "CLS" to "color 6" and it did change the font color. It just the CLS command thats not working.

_______________________________________
Web: www.jcroucher.com
Sonork: 100.472
ICQ: 25902350
MSN: jcroucher@yahoo.com
Yahoo: jcroucher@yahoo.com
----------KnOwLeDgE iS pOwEr-----------

Re: Clear Screen in Console App

John Croucher10-Aug-02 18:17

John Croucher

10-Aug-02 18:17

Found it!

That code does work. I didn' have endl. For some reason the system("cls") doesnt get executed without the endl.

#include <stdlib.h>

cout << "Before\n" << endl;
system("cls");
cout << "After\n";

_______________________________________
Web: www.jcroucher.com
Sonork: 100.472
ICQ: 25902350
MSN: jcroucher@yahoo.com
Yahoo: jcroucher@yahoo.com
----------KnOwLeDgE iS pOwEr-----------

Re: Clear Screen in Console App

Daniel Turini10-Aug-02 22:17

Daniel Turini

10-Aug-02 22:17

endl is equal to:
putc('\n');
flush();

prolly the flush is the responsible here.

Concussus surgo.
When struck I rise.

CHeaderCtrl messages

JennyP10-Aug-02 16:29

JennyP

10-Aug-02 16:29

Hello,

I have a View that's derived from a CListView--with an implicit CHeaderCtrl:

class CGoalsListView : public CListView

However, when I use the class wizard to create handlers Header notifications (e.g., HDN_ENDDRAG), the handlers are never called. The Class wizard put in ON_NOTIFY_REFLECT macros for these controls. I'm wondering if I'm in messaging hell because of my heterodox behavior of getting my main view from CListView instead of CView? Does anyone have any suggestions on how I can find the notifications from my CHeaderCtrl?

Oh---also, how can I change my Header Control's style?--the MSDN alludes to it but doesn't give the exact function (suggests "further reading").

thanks!

JennyP

Re: CHeaderCtrl messages

JennyP10-Aug-02 18:26

JennyP

10-Aug-02 18:26

I found all I needed on this site! (Should have checked here first.)

http://www.codeproject.com/listctrl/headerctrl.asp

Thanks!

JennyP

Re: CHeaderCtrl messages

alex.barylski10-Aug-02 20:57

alex.barylski

10-Aug-02 20:57

I do that all the time... Poke tongue | ;-P

"An expert is someone who has made all the mistakes in his or her field" - Niels Bohr

Positioning Popup Message Boxes

slackboy10-Aug-02 12:57

slackboy

10-Aug-02 12:57

Hi all,

Does anyone know of a way to Big Grin | :-D

specify the position in which a popup message box will appear on screen? I am currently using AfxMessageBox for all my popups, but cannot see any way to force this to pop in a particular location, rather than always displaying in the center of the screen.

Any help would be greatly appreciated...

Thanks,

Steve.

Re: Positioning Popup Message Boxes

Nish Nishant10-Aug-02 16:32

Nish Nishant

10-Aug-02 16:32

You might have to resort to using a WH_CBT type hook!

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Help to load html text to IWEBBrowser2

Stas10-Aug-02 11:52

Stas

10-Aug-02 11:52

I have custom html text in CString and I should show it to user. Please help me. I think I should use IWEBBrowser2, but it work with url or file. Confused | :confused:

Re: Help to load html text to IWEBBrowser2

C^hris L^osinger10-Aug-02 12:16

C^hris L^osinger

10-Aug-02 12:16

i was trying to do this too, a few months ago. i gave up and just write the HTML to a temp file. Frown | :(

-c

Conservative:
One who admires radicals centuries after they're dead.
-- Leo C. Rosten

image effects!

Re: Help to load html text to IWEBBrowser2

Nish Nishant10-Aug-02 16:41

Nish Nishant

10-Aug-02 16:41

I know how to do this once you have the IHTMLDocument2*. My awareness of IWebBrowser2 is minimal. But if you can get the IHTMLDocument2* then here is some code :-

HRESULT hr;
SAFEARRAY* psa = SafeArrayCreateVector(VT_VARIANT, 0, 1);
VARIANT *param; 
//pDoc is an IHTMLDocument2*
BSTR bsData = m_html.AllocSysString();
hr = SafeArrayAccessData(psa, (LPVOID*)&param);
param->vt = VT_BSTR;
param->bstrVal = bsData;
hr = pDoc->write(psa);
hr = pDoc->close();
SysFreeString(bsData);
SafeArrayDestroy(psa);

By the way try this to get the IHTMLDocument2*

Use the IWebBrowser2::Document property to get an IDispatch interface pointer. Call QueryInterface on this to get the IHTMLDocument2*. I am not good at COM, so my method might be wrong, but try it anyway Smile | :)

Regards,
Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Switching a file to a socket

Jackson10-Aug-02 10:02

Jackson

10-Aug-02 10:02

Say I have the name of a file that is being used by another program (it is a log file) and I want to switch the file so that it is sent to a socket instead of dumped into a file is there any way of doing this?

Right now I am just watching the file reading and sending updates, than deleting the file when it is done. These log files can get really big though so I was hoping there was another way.

Thanks

Re: Switching a file to a socket

Anonymous10-Aug-02 12:56

Anonymous

10-Aug-02 12:56

Can u delete the old file after u are thru with it?

Re: Switching a file to a socket

Jackson10-Aug-02 16:05

Jackson

10-Aug-02 16:05

The problem is that I think the files can grow forever, untill the system runs out of disk space.

Re: Switching a file to a socket

l a u r e n10-Aug-02 22:08

l a u r e n

10-Aug-02 22:08

2 suggestions:

1. use the rotary log file wotsit here on cp (dont have link sorry)
2. as you write to the file check its length ... if it goes past a certain size rename it to log01.log (or something) and start another log00.log ... you may run as many as you please before deleting old logs ... i used the date for our log files so they would end up with one per day and they could delete them manually or we could delete them after say 7 days automatically

users like to have lots of log rubbish to read so its cool to leave them around
Wink | ;)

"... and so i said to him ... if it don't dance (or code) and you can't eat it either f**k it or throw it away"
sonork: 100.18128 8028finder.com

CoCreateInstance() fails!~

BlackSmith10-Aug-02 9:19

BlackSmith

10-Aug-02 9:19

I wrote:

IShellLink* psl;
 
CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER,
                 IID_IShellLink, &psl);

CoCreateInstance failed. returned val is not REGDB_E_CLASSNOTREG or CLASS_E_NOAGGREGATION. Why should it fail???

Plz resolve this one, and even better, direct me to some article/source code about creating shortcuts (*.lnk)
10x

--BlackSmith--

"With the help of all mighty", 2001, Me.

Re: CoCreateInstance() fails!~

Ravi Bhavnani10-Aug-02 10:10

Ravi Bhavnani

10-Aug-02 10:10

See this[^] article.

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

Re: CoCreateInstance() fails!~

BlackSmith10-Aug-02 13:12

BlackSmith

10-Aug-02 13:12

CShellLink::Initialize() calls CoCreateInstance(). Yet, it fails!
Maybe there's something wrong with my Win2000??? Confused | :confused:

--BlackSmith--

"With the help of all mighty", 2001, Me.

Re: CoCreateInstance() fails!~

l a u r e n10-Aug-02 22:27

l a u r e n

10-Aug-02 22:27

you have put:

// Initialize OLE libraries
if (!AfxOleInit()){
  AfxMessageBox(_T("OLE Init Failed ... aborting!"));
  return FALSE;
}

in ur InitInstance() right?

"... and so i said to him ... if it don't dance (or code) and you can't eat it either f**k it or throw it away"
sonork: 100.18128 8028finder.com

Toolbar button cwnd*

Slicky10-Aug-02 9:03

Slicky

10-Aug-02 9:03

I can get a cmnd* to my toolbar but I need a cwnd* for a button on the toolbar. How can i do this? Do the buttons not have a cwnd*?

Thanks Confused | :confused:

Re: Toolbar button cwnd*

Michael Dunn10-Aug-02 18:21

Michael Dunn

10-Aug-02 18:21

No, the individual buttons on a toolbar are not windows. You can verify this with Spy++

--Mike--
Just released - RightClick-Encrypt v1.3 - Adds fast & easy file encryption to Explorer
My really out-of-date homepage
Sonork-100.19012 Acid_Helm

Trying to pass info between modal dlg and MDI view?

nss10-Aug-02 8:49

nss

10-Aug-02 8:49

I have a modal dlg spawned by an MDI view class. THere is a data variable array called m_Fld[10] in my doc class. I want to transmit this info to the dlg launched from the view class. After I get user input in the dlg corresponding to processing this array, I want to store it in another doc variable.

Here is my thought. If theres something simpler I'd like to know. This sounds a bit complicated.

First I make a class CMOdalDlg which has a member array m_DlgFld[10], a MyDoc* m_pDlgDoc, and MyDoc.h include. It also has a function called

CModalDlg::SetDocPointer( MyDoc* pdoc)
{
   m_pDlgDoc =pDoc;
}

Then after I do (in the view)

CModalDlg myModalDlg;

    for (int i = 0, i < 10; i++)

    {

       myModalDlg.m_DlgFld[i] = pDoc->m_Fld[i];

    }

    myModalDlg.SetDocPointer(pDoc);

    myModalDlg.DoModal();

Then in the OnInitDialog of myModalDlg I can process this array (it populates a listcontrol in the dialog), get user input from the form, store it in m_pDlgDoc->m_somemember, and say OK to return from the DoModal().

I hope this isnt too confusing. Is this the way to go about it or is there a simpler mechanism I'm unaware of?

Thanks,
ns

A pre-translate message problem -I prevent the dismissal of the dlg due to Enter key with a pretranslate event. But this makes the dlg unresponsive to all Enter presses. So after the user enters data into a CEdit object called m_edit, what action should I take to put this entered info into my doc variable? Do they have to press an 'Done' button which will do the data copy? If I want an Enter to copy the user input info into the doc var, how is this accomplished (assuming I can respond to Enter?) There is no function that runs like the BN_clicked of 'Done' button when you press enter, right?

Anyways I cant respond to enter anyways so I'll have to have a'Done' button, though an 'Enter' would be cooler.

Any thoughts on this?
Hope my issues are clear...
Thanks for any ideas,
ns Confused | :confused:

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