ATL / WTL / STL Discussion Boards

Re: All same values in a big vecotr

John M. Drescher24-Jul-03 11:42

John M. Drescher

24-Jul-03 11:42

You can make use of a map to increment a counter for every time your data has a value.

map <int,int> g_mapData;

void insert(int val)
{
   map <int,int>::iterator it;
   it = g_mapData.find(val);
   if ( it != g_mapData.end() ) {
     it->second++;
   }
   else
   {
     g_mapData.insert(pair<int,int>(val,1));
   }
}

And here is a test program

void main()
{
   insert(0);
   insert(10);
   insert(5);
   insert(0);
   insert(5);
   insert(0);
		
   map<int,int>::iterator i;

   for(i=g_mapData.begin();i != g_mapData.end();i++) {
     cout << i->first << " , " << i->second << endl;
   }
}

And the results are:

0   , 3
5   , 2
10  , 1

John

Re: All same values in a big vecotr

Anonymous24-Jul-03 12:30

Anonymous

24-Jul-03 12:30

Thanks for the reply, But is there some way of doing this within a vector without adding another data structure.

Re: All same values in a big vecotr

Michael Dunn24-Jul-03 12:43

Michael Dunn

24-Jul-03 12:43

Either keep the values sorted when they are inserted, or keep an index as the previous answer said. Without keeping some sort of index on the data, all you can do is a brute-force search.

--Mike--
"Big handwavy generalizations made from a position of deep ignorance is one of the biggest wastes of time on the net today.
-- Joel Spolsky
Ericahist | Homepage | RightClick-Encrypt | 1ClickPicGrabber

Re: All same values in a big vecotr

John M. Drescher24-Jul-03 13:00

John M. Drescher

24-Jul-03 13:00

If you want you can always add all items from the vector to the map only when you need to analyze your data.

John

where to start?

Chris Eatough24-Jul-03 1:07

Chris Eatough

24-Jul-03 1:07

Hi,

Ive been looking for examples of simple ActiveX applications (i have to convert an MFC program to an ATL one for a website. Instead of downloading an executable then running that file the dll is downloaded and the program is run off the website) and i cannot get my head round any of the resources ive found so far. Does anyone know a good place to start (with some simple examples)?

Thanks

Re: where to start?

valikac24-Jul-03 6:46

valikac

24-Jul-03 6:46

Look at CodeProject COM section. Check CodeGuru and Mindcracker.

http://www.codeproject.com/atl/
http://www.codeguru.com/atl/index.shtml
http://www.mindcracker.com/mindcracker/c_cafe/atl.asp

Kuphryn

problem with message handler invocation..

harishv23-Jul-03 12:37

harishv

23-Jul-03 12:37

Hi,

I have added a menuitem to the systemmenu as..

xMenu.InsertItem(0, MF_POSITION, ID_SETTINGS, "&Settings");

Also, I have added a command handler as..
COMMAND_ID_HANDLER(ID_SETTINGS, OnSettings)

When I run the program, I can see the new menu item but when I click on it, the function OnSettings() doesn't get called!! What am I missing here?

thanx in advance
HV

Re: problem with message handler invocation..

Simon.W24-Jul-03 1:57

Simon.W

24-Jul-03 1:57

make sure whether the menu message is send to your window

I am seeking...
For what?
Why did you ask me for what? I don't know!

Re: problem with message handler invocation..

Hans Ruck24-Jul-03 2:12

Hans Ruck

24-Jul-03 2:12

You need to handle WM_SYSCOMMAND. Use MESSAGE_HANDLER.

rechi

Re: problem with message handler invocation..

harishv24-Jul-03 5:25

harishv

24-Jul-03 5:25

that worked, thanx

HV

ATL OLE DB Consumer Templates and Blobs

User 2237023-Jul-03 4:01

User 22370

23-Jul-03 4:01

Hi,

Can anyone point me towards a good example of using DBProp_ISequentialStream to save BLOBS with the VC7 ATL DB Consumer templates.

The AOTBLOB sample often referred to as the answer to such requests does not appear to work with VC7/JET 4.0 (as compiled straight from the MS archive) and I must confess to not being inclined to track down the specific problem.

Thanks,

Displaced Aussie. Currently in London, normally living in Melbourne.

modified 10-Jul-19 21:02pm.

Re: ATL OLE DB Consumer Templates and Blobs

Steve S23-Jul-03 4:41

Steve S

23-Jul-03 4:41

The way that I've done this is to implement a C++ object that looks like ISequentialStream, and given the vtable (aka interface) to the provider.
You must provide the status for the column, and some providers may require that you provide the actual length of the blob.

Different providers were 'odd' though; for instance, with SQLServer it fills in the length and status for a blob column (and you need to do likewise when writing), whereas with Oracle's own provider, the length is always 4, which coincidentally is sizeof(void*). Never used Access/JET in this way though.

Displaced eh? I guess that means Melbourne, Australia, rather than Melbourne, Derbyshire.

Steve S
[This signature space available for rent]

Re: ATL OLE DB Consumer Templates and Blobs

Ed Gadziemski24-Jul-03 3:53

Ed Gadziemski

24-Jul-03 3:53

Have you looked at Ed Gadziemski's "Using Blobs with WTL OLE DB Database Applications" on Code Project ( http://www.codeproject.com/wtl/oledb2.asp [^] )? While not specifically geared to VC7, it does address blobs and OLE DB. Perhaps you could adapt it for your needs.

How to prevent binding a Type library to a ATL Attributed DLL ? need help!!!

talhalfon21-Jul-03 22:37

talhalfon

21-Jul-03 22:37

How to prevent binding a Type library to a ATL Attributed DLL ?

need help

ty
tal halfon

How to prevent to write to registry from ActiveX controls?

vgrigor20-Jul-03 22:45

vgrigor

20-Jul-03 22:45

My ActiveX controls
with property of
IPictureDisp, (Picture hanling -from AtlButton MSDN sample)
take much time for - unload - ,(for 20 controls 5 seconds -
- typical registry time).

All other program waits for this unload - so it is big problem.
How to solve it?

Does there is a method to prevent controls in a dialog to write to registry at destroying of owing them dialog?

I use only C++ property browser,
so can you say: what is unneed interfaces of this control:

<br />
class CAtlButton :<br />
    public CTimer<CAtlButton, IAtlButton, &__uuidof(IAtlButton)>, //используется как таймер<br />
    public CComControl<CAtlButton>,<br />
    public CStockPropImpl<CAtlButton, IAtlButton, &__uuidof(IAtlButton), &CAtlModule::m_libid>,<br />
    public ISpecifyPropertyPagesImpl<CAtlButton>,<br />
    public IPersistStreamInitImpl<CAtlButton>,         //??<br />
    public IOleControlImpl<CAtlButton>,<br />
    public IOleObjectImpl<CAtlButton>,<br />
    public IOleInPlaceActiveObjectImpl<CAtlButton>,<br />
    public IViewObjectExImpl<CAtlButton>,<br />
    public IOleInPlaceObjectWindowlessImpl<CAtlButton>,<br />
    public IPersistPropertyBagImpl<CAtlButton>,         //??<br />
    public IPersistStorageImpl<CAtlButton>,         //??<br />
    public IQuickActivateImpl<CAtlButton>,<br />
    public IDataObjectImpl<CAtlButton>,         //??<br />
    public IObjectSafetyImpl<CAtlButton, INTERFACESAFE_FOR_UNTRUSTED_CALLER>         //??<br />
    ,public IPerPropertyBrowsingImpl <CAtlButton>          //??<br />

thanks you

COleDocObjectItem::OnPrint(this, pInfo, TRUE) ?

Mardigin19-Jul-03 12:14

Mardigin

19-Jul-03 12:14

I have embed excel into my application and would like to overide my onprint function. Upon entry into this function
pDC->m_hAttribDC; pDC->m_hDC; Are both NULL. the CDC* pDC however is not.
If I try calling onPrint before an excel spreadsheet is open, then neither member is NULL. Only when I have an excel spreadsheet open are these members NULL. Why is this so?

Sincerely,

Mardigin

Re: COleDocObjectItem::OnPrint(this, pInfo, TRUE) ?

Mardigin19-Jul-03 13:07

Mardigin

19-Jul-03 13:07

Okay I was able to get the hdc in the following manner

<br />
void CBPReportView::OnPrint(CDC* pDC, CPrintInfo* pInfo)<br />
{<br />
	<br />
	// TODO: add customized printing code here<br />
	if(pInfo->m_bDocObject)<br />
	{<br />
		CDC * pOleDC = this->GetDC();<br />
		pDC->Attach(pOleDC->m_hDC);<br />
		pDC->TextOut(100,100,"Muah ha ha h aa");<br />
		COleDocObjectItem::OnPrint(this, pInfo, TRUE);<br />
		ReleaseDC(pOleDC);<br />
	}<br />
	else<br />
		CView::OnPrint(pDC, pInfo);<br />
}<br />

Only trouble is that "muah ha ha h aa" never shows up on my printed page, only the excel spreadsheet shows up. Any ideas?

Mardigin

ComboBox Error in ATL

TRZ19-Jul-03 0:42

TRZ

19-Jul-03 0:42

Greetings people,

I have a strange question here [might not be strange to you *grins*].
I have created an ActiveX Composite control with a combo box in it. I filled the data into the combo box through it's properties->data tab. However, when I test it using the ActiveX Control Test Container or the browser, there is nothing in the combo box.
So, I tried another approach, by using a for loop like this:
char *m_cC[3]={"Cash","Cheque","Credit Card"};

for(int i_P=0;i_P<3;i_P++)
cbControl->AddString(m_cC[i_P]);

The same problem still persists, there is nothing in the combo box. Is there another way to initialize a combo box in ATL technology?

Please advise.

Thank you!
OMG | :OMG:

May i retrieved inner object through outer object

El'Cachubrey16-Jul-03 4:58

El'Cachubrey

16-Jul-03 4:58

Hi all.
I have some COM object what contained inside itself another object and i want retrieved this inner object though some method of outer object.
I.e. make like that

HRESULT GetInnerObject(CoInnerObj** ppObj){

* ppObj = m_pInnerObj;//pointer to my inner objetc

return S_OK;
}

May i do this or its unproper way.
I has done my COM object this manner and its work fine, but me suggest don't use this way(and retrieved only interfaces through methods).
I want recognize why??

Also i watch in COM any microsoft applications same way of decision this problem.

Thanks.

Re: May i retrieved inner object through outer object

valikac17-Jul-03 4:42

valikac

17-Jul-03 4:42

COM is interface-based programming. In general, a thread seens an interface, not a pointer to a coclass. There are numerous possible problems. One problem is compatibility. What you are trying to do is unconventional.

Kuphryn

How To Embed Excel and Remove Menu

Mardigin15-Jul-03 15:51

Mardigin

15-Jul-03 15:51

The following is a snippet is the code that actually embeds excel into my application and then attempts to remove the insert menuitem. I have read through more then one tutorial, but the most important one to note here is the following: http://support.microsoft.com/default.aspx?scid=http://support.microsoft.com:80/support/kb/articles/q180/6/25.asp&NoWebContent=1

If anyone has anyideas of what is wrong with this code please reply.

Note: The above tutorial instructs to create a dlg based application, Mine is an MDI application. The above tutorial controls excel, my application embeds and then attempts to control excel. It works fine right up until it calles cbPop.SetVisible(FALSE);

Then it falls into the catch:
CException e.m_bAutoDelete = 1
CException e.m_bReadyForDelete = 0

The code I have included here shows how I embed excel and display it on the screen. This is all that i do differently from the above tutorial.

<br />
       CBPReportCntrItem		*pItem	= NULL;<br />
	CBPReportDoc			*pDoc	= NULL;<br />
	CLSID					clsid;<br />
	TRY<br />
	{<br />
	//Get the document associated with this view, and be sure it's<br />
        //valid.<br />
		pDoc = GetDocument();<br />
        ASSERT_VALID(pDoc);<br />
<br />
		//Create a new item associated with this document, and be sure<br />
        //it's valid.<br />
        pItem = new CBPReportCntrItem(pDoc);<br />
        ASSERT_VALID(pItem);<br />
<br />
		// Get Class ID for Excel sheet.<br />
        // This is used in creation.<br />
        if(FAILED(::CLSIDFromProgID(L"Excel.sheet",&clsid)))<br />
		{<br />
			AfxMessageBox("Failed to create Excel.sheet");<br />
			//Any exception will do. We just need to break out of the<br />
			//TRY statement.<br />
			AfxThrowMemoryException();<br />
		}<br />
<br />
		// Create the Excel embedded item.<br />
        if(!pItem->CreateNewItem(clsid))<br />
		{<br />
			AfxMessageBox("Failed to create the excel embeded item");<br />
			//Any exception will do. We just need to break out of the<br />
			//TRY statement.<br />
			AfxThrowMemoryException();<br />
		}<br />
<br />
        //Make sure the new CContainerItem is valid.<br />
        ASSERT_VALID(pItem);<br />
<br />
		// Launch the server to edit the item.<br />
        pItem->DoVerb(OLEIVERB_SHOW, this);<br />
<br />
		// As an arbitrary user interface design, this sets the<br />
        // selection to the last item inserted.<br />
        m_pSelection = pItem;   // set selection to last inserted item<br />
        pDoc->UpdateAllViews(NULL);<br />
	<br />
		//Query for the dispatch pointer for the embedded object. In<br />
        //this case, this is the Excel worksheet.<br />
        lpDisp = pItem->GetIDispatch();<br />
<br />
	app.AttachDispatch(lpDisp, TRUE);<br />
        	<br />

Then further down I did the following

<br />
                cbPop.AttachDispatch(app.DetachDispatch(), TRUE);<br />
		//cbPop.SetEnabled(FALSE);<br />
		cbPop.SetVisible(FALSE);<br />

Sincerely,

Mardigin

What thread type should I use in ATL object if I develop a BHO for IE?

kydfru15-Jul-03 6:58

kydfru

15-Jul-03 6:58

There are many thread solutions in ATL but what is the best solution?
I need single thread for background I/O operations.

Re: What thread type should I use in ATL object if I develop a BHO for IE?

El'Cachubrey16-Jul-03 5:03

El'Cachubrey

16-Jul-03 5:03

Hi You may see this link http://www.codeproject.com/threads/usinguithreads.asp

Download ActiveX

Anonymous15-Jul-03 5:35

Anonymous

15-Jul-03 5:35

Hi,
does anybody know how to download ActiveX from Apache Server and not from IIS. What should be the HTML Script and where should I put the ActiveX (dll) on Apache Server.
thanks

Re: Download ActiveX

Anonymous15-Jul-03 5:49

Anonymous

15-Jul-03 5:49

Thanks I found the problem

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