C / C++ / MFC

1-Aug-02 9:54

Hi all,

Anyone know how I would go about embedding a dialog (DVCR) into another dialog (DNewDialog)?

What I want to do is treat it like a CWnd, and use CWnd::Create() in DNewDialog::InitDialog() to add it to the dialog.

I figure I should start by creating an inherited class (DEmbeddedVCR) that inherits from DVCR.

But calling DEmbeddedVCR::Create() always creates a standard dialog, e.g. one you can move around and that has a title bar.

I've tried DEmbeddedVCR::ModifyStyle() with various arguments, but have been unable to make it behave.

Am I going about this totally the wrong way?

TIA,

Pete

Ravi Bhavnani1-Aug-02 9:59

Ravi Bhavnani

1-Aug-02 9:59

Change the style of the embedded in the resource editor to "Child". Then, create it as a modeless dialog.

/ravi

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

Roman Nurik1-Aug-02 10:05

Roman Nurik

1-Aug-02 10:05

you could also add a custom control "item" to the dialog and set its window class to the dialog window class #32768 or one of those # thingies

- Roman -

moredip1-Aug-02 11:02

1-Aug-02 11:02

Did you mean setting the Class property of the custom control to IDD_VCR (where IDD_VCR is the id of the dialog I want to embed)?

I tried that and whenever I call DoModal on the dialog (the dialog I added the custom control to) it returns instantly, before it reaches InitDialog().

Roman Nurik1-Aug-02 21:21

Roman Nurik

1-Aug-02 21:21

no, the class should be the constant for all dialog boxes... "#32770" that is the exact value... the only problem is that i dont know how to associate a CDialog with the custom control

- Roman -

moredip1-Aug-02 10:51

1-Aug-02 10:51

I can't do that, coz I also want to use the dialog as a standard dialog.

I need two types of dialog derived from the same resource, one a regular dialog, one a child

C^hris L^osinger1-Aug-02 10:36

1-Aug-02 10:36

see http://www.codeproject.com/property/saprefs.asp for a working example of embedding one dialog in another.

-c

To explain Donald Knuth's relevance to computing is like explaining Paul's relevance to the Catholic Church. He isn't God, he isn't the Son of God, but he was sent by God to explain God to the masses.
/. #3848917

moredip1-Aug-02 10:53

1-Aug-02 10:53

I think that SAPrefs works by using 'sub dialogs' which are declared as type Child. The problem is that I can't set the resource as a child, because I also need a dialog that works as a regular dialog, based on the same resource.

I need a way to programmatically set the dialog as a child or popup and CWnd::ModifyStyle() doesn't seem to work Frown | :(

Joseph Dempsey1-Aug-02 11:00

Joseph Dempsey

1-Aug-02 11:00

are you sure you are removing the proper styles from the dialog when you are using modifystyle to add the child style. You have to remove the options that make it a popup window that contain the title bar and such.

Joseph Dempsey
jdempsey@cox.rr.com
Joseph.Dempsey@thermobio.com

"Software Engineering is a race between the programmers, trying to make bigger and better fool-proof software, and the universe trying to make bigger fools. So far the Universe in winning."
--anonymous

moredip1-Aug-02 11:10

1-Aug-02 11:10

I've just been playing around with that.

I modified the resource so that it worked great as an embedded control, and noted what GetStyle() returned. I then restored it to how it was originally.

Then I did the following. It is strange:

...
...
	DWORD style = m_pVCR->GetStyle();
	TRACE( "DEmbeddedVCR PRE style = %x\n", style ); //shows style as 84c808c4
	
	m_pVCR->ModifyStyle( 0xffffffff, 0x40000844  );
	
	style = m_pVCR->GetStyle();
	TRACE( "DEmbeddedVCR POST style = %x\n", style ); //shows style as 44000844
...
...

note that the ModifyStyle call doesn't work.

I'm not sure what's going on here...

C^hris L^osinger1-Aug-02 11:37

1-Aug-02 11:37

looks like it works to me - you've cleared everything and set x40000844

-c

moredip1-Aug-02 11:43

1-Aug-02 11:43

yeah, but subsequent calls to GetStyle() return 44000844 Cry | :((

C^hris L^osinger1-Aug-02 11:46

1-Aug-02 11:46

maybe i'm misunderstanding.. but... they should.

ModifyStyle(0xffffffff, X) will set the style bits to "X"

moredip1-Aug-02 11:51

1-Aug-02 11:51

I'm calling ModifyStyle(0xffffffff, 0x40000844)
and subsequent GetStyle calls return 0x44000844.

Note that the 2nd 0 is now a 4.

C^hris L^osinger1-Aug-02 11:52

1-Aug-02 11:52

ah.

any idea what the extra '4' represents?

moredip1-Aug-02 11:57

1-Aug-02 11:57

WS_CLIPSIBLINGS (WINUSER.h)

A strange style to be misbehaving Big Grin | :-D

I have a feeling that this bug-hunt is academic now anyway, as I modified the resource to have ClipSiblings set, and it still does not work.

So even if I could get that ModifyStyle() call to do the job, it would not solve my problem.

Intriguing though....

Thanks,

Pete

moredip1-Aug-02 12:20

error doing a select distinct

1-Aug-02 12:20

So, for those who are interested, here is how I did it (finally):

ModifyStyle() can't be used, possibly because of the way dialogs are loaded from resources.

But it is possible to programmatically modify the resource, as follows:

	CString strIDD;
	strIDD.Format( "#%u", IDD_VCR ); //where IDD_VCR is the dialog resource I wish to embed
	DLGTEMPLATEEX* pDlgTemplate = (DLGTEMPLATEEX*)::LockResource( ::LoadResource( NULL, ::FindResource( NULL, strIDD, RT_DIALOG ) ) );

	//set the dialog style so that we can use it as an embedded control (see the #defines for WS_POPUP etc in WINUSER.H)
	pDlgTemplate->Style = 0x40000844;
	

	m_pVCR = new DEmbeddedVCR();
	m_pVCR->CreateIndirect( pDlgTemplate, this );

//note that we cannot directly 'unlock' pDlgTemplate, this is handled by Windoze

This should all really be put in DEmbeddedVCR::Create(), rather than called 'client-side' as it were.

Hope that helps out someone at some point...

Pete

ns1-Aug-02 9:35

1-Aug-02 9:35

I am doing a simple select distince:

if(pAdoDb.Open((LPCTSTR)strConnection))
{
	CString strCommandText;
	CString strQry = _T("");
	int numRecords;

	strQry.Format(_T("SELECT DISTINCT (Color) From tblTest"));

	CADOCommand pCommand(&pAdoDb, strCommandText = _T(""),CADOCommand::typeCmdText);
	pCommand.SetText(strQry);

	CADORecordset pRs(&pAdoDb);

	if(!pRs.Execute(&pCommand))
		AfxMessageBox("failed");

This snippet worked with "select * from tblTest".

With the distinct command above I am getting a runtime error:

CADORecordSet error
code = 80040e10
code meaning = IDispatch error #3088
Source = Microsoft JET database engine
Description = No value given for one or more required parameters

What am I doing wrong? Please help!
Thanks,
ns

Ravi Bhavnani1-Aug-02 9:44

Ravi Bhavnani

1-Aug-02 9:44

Are the parentheses around "Color" extraneous?

(Caveat: I know nothing about SQL.)

/ravi

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

ns1-Aug-02 9:51

1-Aug-02 9:51

The parentheses dont seem to matter. I just realized this is not the forum for this stuff, but the ADO forum is really dead....d'you think I can post here or is that not nice?

Ravi Bhavnani1-Aug-02 9:57

Ravi Bhavnani

1-Aug-02 9:57

ns wrote:
The parentheses dont seem to matter.
Ugh, sorry. I got that from Google.

It's probably better to post in the ADO forum, but I think the lack of replies isn't due to the forum location, rather that most readers may not know the answer. I wish I could help, but I'm database clueless.

/ravi

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

achandra0071-Aug-02 9:58

achandra007

1-Aug-02 9:58

I am not so sure about ADO but right off the bat, the number of columns you are returning has changed. Have you bound columns?