C / C++ / MFC Discussion Boards

C^hris L^osinger10-Sep-02 9:40

10-Sep-02 9:40

no, there is no function in CDialog for accessing a CDocument. you either have to give your dialog a pointer (or reference) to your CDoc or copy data to and from the dialog using member functions of the dialog (or variables).

void CMyDoc::OnX()
{
  CMyDialog dlg;
  dlg.m_data = m_data;
  if (dlg.DoModal()==IDOK)
  { 
    m_data = dlg.m_data;
  }
}

or:

void CMyDoc::OnX()
{
  CMyDialog dlg;
  dlg.m_pDoc = this;
  dlg.DoModal();
}
...
class CMyDialog
{
...
   public:
   CMyDoc *m_pDoc;
}

-c

"Kate said / The flowers of intolerance and hatred / Are blooimg kind of early this year / Someone's been watering them.
-- Robyn Hitchcock, Devil's Radio

CFileDialog question

achandra00710-Sep-02 8:59

achandra007

10-Sep-02 8:59

I am using CFileDialog to open a bunch of files and count the number of lines in them.

I am using the OFN_ALLOWMULTISELECT option.

It works fine if I select multiple files, but as soon as I select only one file, the CommDlgExtendedError returns a FNERR_BUFFERTOOSMALL error. The following is the code snippet:

<br />
	CFileDialog fileDlg(true,NULL,NULL,OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT|OFN_ALLOWMULTISELECT ,"All Files|*.*||",NULL);<br />
	fileDlg.m_ofn.lpstrFile = m_sFileNameBuf.GetBuffer(65536);<br />
	fileDlg.m_ofn.nMaxFile = 65536; // 64k filename buffer<br />
	int nOK = fileDlg.DoModal();<br />
	if(nOK == IDOK)<br />
	{<br />
		POSITION pos = fileDlg.GetStartPosition();<br />
		int nLines = 0,nTotalLines = 0;<br />
		while(pos)<br />
		{<br />
			sFileName = fileDlg.GetNextPathName(pos);<br />
			nLines = GetNumLines(sFileName);<br />
			nTotalLines += nLines;<br />
			sTmp.Format("%d",nLines);<br />
			sLine = "File ";<br />
			sLine += sFileName;<br />
			sLine += " has ";<br />
			sLine += sTmp;<br />
			sLine += " lines.\n";<br />
			fLog.WriteString(sLine);<br />
			fLog.Flush();<br />
		}<br />
		sTmp.Format("%d",nTotalLines);<br />
		sLine = "\nTotal number of lines inspected is " + sTmp;<br />
		fLog.WriteString(sLine);<br />
		fLog.Flush();<br />
	}<br />
	else<br />
	{<br />
		DWORD err = CommDlgExtendedError();<br />
		CString s(fileDlg.m_ofn.lpstrFile);<br />
                // s has garbage for some reason<br />
		fLog.WriteString("No files were inspected as operation was cancelled.");<br />
	}<br />
<br />
<br />

Re: CFileDialog question

achandra00710-Sep-02 9:13

achandra007

10-Sep-02 9:13

Never mind I got it. I don't know why but as soon as I made my buffer 65535 (and not 65536 - 64k + 1byte), it works for single selection as well.

how to write msdn style help ?

Omar Lodhi10-Sep-02 8:46

Omar Lodhi

10-Sep-02 8:46

Dear All,

i want to write help for my application. plz if any one of you can guide me how can i write my application help same as msdn. if there is some code materail or any other helping material plz reffer me i will be thank full.

lodhi

Re: how to write msdn style help ?

Pavel Klocek10-Sep-02 9:33

Pavel Klocek

10-Sep-02 9:33

See this[^]

Pavel
Sonork 100.15206

Listbox SendMessage with LV_DISPINFO

Chris Klecker10-Sep-02 7:30

Chris Klecker

10-Sep-02 7:30

I'm trying to send a message from my ListBox custom class to another class which utilizes the control. In the Listbox control I build a LV_DISPINFO struct and then pass it to a SendMessage method to be used by the OnNotify message in the calling class. In this example CCreateWorldStep1Dlg uses the ListBox custom control whereas the ListBox custom control passes a message back to CCreateWorldStep1Dlg as a Notify message.

<br />
void CCreateWorldStep1Dlg::OnNotify(UINT message, LPARAM lParam) <br />
{<br />
	CString Buffer;<br />
        LV_DISPINFO *pInfo = (LV_DISPINFO *)lParam;<br />
<br />
	pListBox->GetText(pListBox->GetCurSel(), Buffer);<br />
	if(pListBox->GetCurSel() == pListBox->GetCount() - 1)<br />
		pRegionsArray->Add(Buffer);<br />
	else<br />
		pRegionsArray->SetAt(pListBox->GetCurSel(), Buffer);<br />
}<br />

The problem is that variable pInfo contains garbage when I look at it. May I be converting the lParam incorrectly?

This is how I am sending the message

GetParent()->GetParent()->SendMessage(WM_NOTIFY, m_DlgID, (LPARAM)&dispinfo);<br />

Thanks for the help

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

CEdit Control, dumb question!

RobJones10-Sep-02 7:31

RobJones

10-Sep-02 7:31

Hello,
I have a smiple dialog box with a edit control(multiple line).. I pump strings into the edit control and start filling it up.. each string I put into the control goes on a new line below the previous line.. How do I get the control to auto-scroll down so that each new line that is inserted is displayed with out having to manually scroll to the bottom of the control.

Thanks!

Re: CEdit Control, dumb question!

Joaquín M López Muñoz10-Sep-02 7:32

Joaquín M López Muñoz

10-Sep-02 7:32

Try with m_youredit.SetSel(-1,-1,TRUE).

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: CEdit Control, dumb question!

RobJones10-Sep-02 8:46

RobJones

10-Sep-02 8:46

Didn't work.. I have tried even tried SetScrollPos(SB_VERT,1,TRUE); to scroll the bar down only one click.. but it doesn't seem like anything is effecting the scroll bar.

Re: CEdit Control, dumb question!

Pavel Klocek10-Sep-02 9:26

Pavel Klocek

10-Sep-02 9:26

This[^] can be of use to you.

Pavel
Sonork 100.15206

Re: CEdit Control, dumb question!

RobJones10-Sep-02 11:34

RobJones

10-Sep-02 11:34

Thanks, I used his example and made mine work!

Re: CEdit Control, dumb question!

Ravi Bhavnani10-Sep-02 12:06

Ravi Bhavnani

10-Sep-02 12:06

Glad my old, worn-out article helped! Smile | :)

/ravi

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

URGENT: Question about Carlos Antollini ADO classes !!!

Hadi Rezaee10-Sep-02 7:25

Hadi Rezaee

10-Sep-02 7:25

Hello !!!!
How can i open my access database as READ ONLY by Carlos Antollini classes ?

My month article: Game programming by DirectX by Lan Mader.
Please visit in: www.geocities.com/hadi_rezaie/index.html

Hadi Rezaie

Re: URGENT: Question about Carlos Antollini ADO classes !!!

Alex Mitchell10-Sep-02 8:39

Alex Mitchell

10-Sep-02 8:39

hadi,

I understand that you can set the readonly feature in the connection string.

"Provider=Microsoft.Jet.OLEDB.4.0;Password="""";User ID=Admin;Data Source=C:\test.mdb;Mode=Read;Extended Properties="""";Jet OLEDB:System database="""";Jet OLEDB:Registry Path="""";Jet OLEDB:Database Password="""";Jet OLEDB:Engine Type=4;Jet OLEDB:Database Locking Mode=0;Jet OLEDB:Global Partial Bulk Ops=2;Jet OLEDB:Global Bulk Transactions=1;Jet OLEDB:New Database Password="""";Jet OLEDB:Create System Database=False;Jet OLEDB:Encrypt Database=False;Jet OLEDB:Don't Copy Locale on Compact=False;Jet OLEDB:Compact Without Replica Repair=False;Jet OLEDB:SFP=False";

Re: URGENT: Question about Carlos Antollini ADO classes !!!

Hadi Rezaee10-Sep-02 10:24

Hadi Rezaee

10-Sep-02 10:24

Hello Alex Smile | :)

Thanks for reply, i'll test it and then tell you the result ...
About the connection string ...
I don't most of connection string parameters that you wrote Confused | :confused:

for example:

Extended Properties, Jet OLEDB:System database, Registry Path and etc ...
Could you explain about connection string parameters ?

I have other question, too.
I have problem in opening database from CD !!!
Because as you know, when i open the access database, the access database makes a .LDB file beside the access database !
So can you tell me, how can i open access database from CD ?
Is opening access database as read-only good way ?

Regards,

My month article: Game programming by DirectX by Lan Mader.
Please visit in: www.geocities.com/hadi_rezaie/index.html

Hadi Rezaie

Re: URGENT: Question about Carlos Antollini ADO classes !!!

Alex Mitchell11-Sep-02 3:09

Alex Mitchell

11-Sep-02 3:09

Hadi

The parameters are those generated from C# when addition a OleDBConnection object to a form.

I am sure I succeeded in reading an Access database from a CD in the past. However, performance is not good.

Cheers,
Alex

newbie ?: how to update my view

brianwelsch10-Sep-02 7:07

brianwelsch

10-Sep-02 7:07

I have an MDI app, CMyEditDoc (from CDocument), and CMyEditView (from CEditView).
In CMyEditDoc, I have a CStringArray with text I want displayed.
How do I actually get the view updated from the doc? Confused | :confused:

I seem to have a block in understanding this. Can someone help a brother out, here?

BW
{insert witty/thought-provoking saying here}

Re: newbie ?: how to update my view

C^hris L^osinger10-Sep-02 7:25

C^hris L^osinger

10-Sep-02 7:25

the usual way is to call CMyDoc::UpdateAllViews. this function takes a couple of parameters that you can use to use to pass a flag or a CObject-dervied class (or actually, anything because you can cast to a CObject* to pass and then cast back to the real type in the view).

anyway, you call UpdateAllViews with your flags/data and then in your view's OnUpdate handler, you look at the parameters that were passed and act accordingly.

most of my apps will just send a flag in UpdateAllViews. the views look at that flag, decide what to do and call back to the doc to get any data they need. i rarely pass much data in the CObject* parameter (sometimes i pass a little bit of state info, but rarely do i pass the real document data).

-c

"Kate said / The flowers of intolerance and hatred / Are blooimg kind of early this year / Someone's been watering them.
-- Robyn Hitchcock, Devil's Radio

Question about Group boxes

Luis E. Cuadrado10-Sep-02 7:01

Luis E. Cuadrado

10-Sep-02 7:01

Hello Everybody:
I want to have a group box that becomes visible and invisible by clicking another object (it could be a button or even an Bitmap with WM_LBUTTONDOWN maybe). Is there a way that I can do this? If so, can you give me a quick example?

Regards,

Luis E. Cuadrado
Blush | :O

)

Re: Question about Group boxes

Joaquín M López Muñoz10-Sep-02 7:07

Joaquín M López Muñoz

10-Sep-02 7:07

The thing seems simple. Where are you stuck? Showing/hiding a control (or any window) can be achieved with ShowWindow.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Question about Group boxes

Anonymous10-Sep-02 7:23

Anonymous

10-Sep-02 7:23

Thanks for the quick reply. Well, I'm stuck in showing and hiding the control itself. I'm not sure if a group box is considered a CStatic class, or a CButton class. But what I'm planning to do is in a Dialog, to have a Button or a Bitmap control and when I click that control the group box will appear.

If you need more info, let me know.

Gracias,
Luis E.

Re: Question about Group boxes

Joaquín M López Muñoz10-Sep-02 7:30

Joaquín M López Muñoz

10-Sep-02 7:30

Insert the group box into your dialog resource. Then, anywhere inside the dialog code, GetDlgItem(IDC_YOUR_GROUP_BOX) (or whatever identifier the box has) will give you a CWnd * on which you can call ShowWindow.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Question about Group boxes

Jawache10-Sep-02 12:15

Jawache

10-Sep-02 12:15

Just to make sure. Are you aware that showing and hiding a group box will not show or hide the controls in that box?

Asim Hussain
e: asim@jawache.net
w: www.jawache.net

TAPI 2: Dialing during a call

twomagiclovers10-Sep-02 7:00

twomagiclovers

10-Sep-02 7:00

Hi all,

Is TAPI 2 capable of dialing digits on a line while a call is in progress, i.e. to respond to voice mail options?

Thanks!

--Two Magic Lovers

Re: TAPI 2: Dialing during a call

Anders Molin10-Sep-02 13:58

Anders Molin

10-Sep-02 13:58

Yes, use lineGenerateDigits() Smile | :)

- Anders

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

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