ATL / WTL / STL

Re: how do i pass UDT to from Compnt to ClientApp?

30-Sep-05 9:13

Did it work out well for you? (I still feel a bit ashamed for the ATL wizard stuff Big Grin | :-D

)

--
Look straight into the light!

Eytukan3-Oct-05 6:30

How to get the specified item in IHTMLDocument2?I have no any idea.Need help!

3-Oct-05 6:30

actually, it could be done using Type in VB itself, no need to create an UDT in the Component. the requirement was like that. eg:

[ATL]
Fire_Event(BSTR Num,long Num)
[/ATL]

[VB]
Public Type MyType
Name as String
Num as long
End type
[/VB]

so in the client app, i assigned it like
MyType obj

Private ob_newEvent(String Name,Long num)
ob.Name = Name
obj.num=num
End sub

so i didn't find the need. But the terror strikes again,... soon i'll have to get these arguments in the method itself just like we did with Events.i'll try it at that time..so we'll meet again very soon.
[sorry for delay, just now i clicked on ATL ]

V

at2000128-Sep-05 17:18

Re: How to get the specified item in IHTMLDocument2?I have no any idea.Need help!

28-Sep-05 17:18

I know there are many interfaces can operate the html document.but i don't know how can get them.
I can get the IHTMLDocument2 interface pointer,but,how can i get the specified item interface in the document?i check the sdk document and know the IHTMLDocument2 has an collection property named "all",I don't know how to use this property.

my code as follow:
//get the container interface
CComPtr<iolecontainer> spIE;
m_spClientSite->GetContainer(&spIE);
//get IHTMLDocument2 interface
CComQIPtr<ihtmldocument2 ,="" &iid_ihtmldocument2=""> spDoc(spIE);
//now i can operate the document ,but i don't know how to get the item in it.

where can i get more detailed document? thanks all.

at2000128-Sep-05 21:53

garbage collection & compaction

28-Sep-05 21:53

I caught it.Get IElementCollection interface through "all" property of document.then get IDispatch through item property of IElementCollection and then QI IHTMLElement interface.

Member 231338128-Sep-05 3:54

Member 2313381

28-Sep-05 3:54

help on writing routines of garbage collection & compaction

programing the video RAM

Member 231338128-Sep-05 3:47

Member 2313381

28-Sep-05 3:47

i want to program the video a ram so tht the bit patterns i expect will be displayed on the screen. using C i want to do this. because of lack of interrupt information this is waiting

OCX link to ATL

honae28-Sep-05 2:56

honae

28-Sep-05 2:56

Hi,

My problem is the follow one:

who to know, everything that I will go to describe will be about OPOS(Ole Point-of-Service)

I have many Automation Controllers. There are many ocx.
These ocxs are the Control Objects to an specific device( like CashDrawer ). The Control Object make calls to methods that are implemented in a Service Object. Each device or device class has a Service Object. This Service Object can be ATL or MFC.

I need to know how do I have to create a projec in Visual c++ 6.0 to build a Automation Server(Service Object). What steps do i have to do? Like what kind of Server type( Dynamic Link Library, Executable or Service), which check box do I have to check( allow merging of proxy, support MFC and/or support MTS) or
which ATL Object do I have to insert in project?

To show an example, the CrashDrawer's Control object defines the fallow method:

long COPOSCashDrawer::GetOpenResult()
{
long result;
InvokeHelper(0x31, DISPATCH_PROPERTYGET, VT_I4, (void*)&result, NULL);
return result;
}

How do I have define the Service Object to answer that method? I really dont't know how to do that. Please i need your help!

Grateful!

Hélio

(cout << double) != (cin >> double)

Malcolm Smart28-Sep-05 0:40

Malcolm Smart

28-Sep-05 0:40

Hi - a double has max size of e308 and min of e-308 (or 307, irrelevant in this case). I can stream out doubles up (down?) to a size of e-324, but only read them back in at e-308. Any ideas? Test code below - sorry for length....

Cheers

Angel

double dTestarray[30];
//set the base
dTestarray[0] = 1.23456789e-301;

//decrement by a factor of ten
for (int i = 1 ; i < 30 ; ++i)
	dTestarray[i] = dTestarray[i-1] / 10;

std::ofstream fout("c:\\double.txt" , std::ios::out);

for (i = 0 ; i < 30 ; ++i)
	fout << dTestarray[i] << std::endl;

fout.close();

/*
[OUTPUT (file contents) ]
1.23457e-301
1.23457e-302
1.23457e-303
1.23457e-304
1.23457e-305
1.23457e-306
1.23457e-307
1.23457e-308
1.23457e-309
1.23457e-310
1.23457e-311
1.23457e-312
1.23457e-313
1.23457e-314
1.23457e-315
1.23457e-316
1.23457e-317
1.23457e-318
1.23457e-319
1.23467e-320
1.23516e-321
1.23516e-322
9.88131e-324
0
0
0
0
0
0
0
*/

//read them all back in
double dTest(0);

std::ifstream fin("c:\\double.txt" , std::ios::in);

int Line(1);
while (fin)
{
	fin >> dTest;

	if (fin.fail())
		std::cout << "Failed on line " << Line << std::endl;
	else
		std::cout << "Line " << Line++ << " read as " << dTest << std::endl;
}

/*
[OUTPUT (std::cout) ]
Line 1 read as 1.23457e-301
Line 2 read as 1.23457e-302
Line 3 read as 1.23457e-303
Line 4 read as 1.23457e-304
Line 5 read as 1.23457e-305
Line 6 read as 1.23457e-306
Line 7 read as 1.23457e-307
Failed on line 8
Press any key to continue
*/

*********************************************
The sooner you fall behind, the longer you have to catch up.

-- modified at 8:46 Wednesday 28th September, 2005

My control can't run on win98,help~~

at2000127-Sep-05 15:41

Re: My control can't run on win98,help~~

27-Sep-05 15:41

I made a simple activex control, can't run on win98.the container is ie.
i tried these steps:
1.I tried to reg the control dll,but failed,prompt 'cant load the dll'.
2.I found that there was no atl.dll in win98.so i copied one from win2000 to c:\windows\system
3.reg the control dll by regsvr32 again.(failed,prompt 'cant run unicode version of atl.dll on windows95.Pls install correct version.') my problem:how can i get the correct version?

what shall i do? thanks all.

Anonymous28-Sep-05 1:48

Anonymous

28-Sep-05 1:48

Their exist two different versions of atl.dll, one with unicode and one without. Both are provieded by Microsft and can be redistributed by everybody. For example all "better" setup programs include both versions of atl.dll. We avoid this kind of problem by delivering the "ReleaseMinDependency"-build, because this build statically links to atl.dll. Wink | ;)

Re: My control can't run on win98,help~~

at2000128-Sep-05 6:00

28-Sep-05 6:00

Ok.I think releaseMinDependency-build is better and easier.will try.Thank you!

No _disinterface :(

Eytukan26-Sep-05 6:17

26-Sep-05 6:17

disinterface is not getting created for my component. i dont find anything starting with a "_"(underscore)ISample" i mean _ISample. how to generate it? can we mannually add a disinterface? please help. time critical! Frown | :(

thanks
v

Jörgen Sigvardsson26-Sep-05 12:17

26-Sep-05 12:17

Are you talking about event source interfaces? If the class wizard has screwed up (which it often does), then create a new ATL project, and create a dummy class. Create the event source interface in its IDL file, and make the classwizard generate the proxy code. Then simply copy the code from that project to your old project.

All that's needed really is a block in the type library, and the proxy code (for easy generation of events).

--
Keep talking! You're the fool, I'm the preacher.

Eytukan27-Sep-05 6:15

27-Sep-05 6:15

jorgen, ya your are right, i'm missing the "Fire_"menthods (for raising events) inside template class, which is given in the header file like,

[code]
#ifndef _ATL21CP_H_
#define _ATL21CP_H_

template <class t="">
class CProxy_IIATL21Events : public IConnectionPointImpl<t, &diid__iiatl21events,="" ccomdynamicunkarray="">
{
public:
};
#endif
[/code]

even thought i create methods with the right sequence, only the interface definition is getting created like,

[code]
[id(2), helpstring("method UseCount")] void UseCount([in]long Total);
[/code]

actually, the definition for Fire_ event should have generated in the header file , like
[code]
VOID Fire_UseCount(SHORT Total)
{
T* pT = static_cast<t*>(this);
int nConnectionIndex;
CComVariant* pvars = new CComVariant[1];
int nConnections = m_vec.GetSize();

for (nConnectionIndex = 0; nConnectionIndex < nConnections; nConnectionIndex++)
{
pT->Lock();
CComPtr<iunknown> sp = m_vec.GetAt(nConnectionIndex);
pT->Unlock();
IDispatch* pDispatch = reinterpret_cast<idispatch*>(sp.p);
if (pDispatch != NULL)
{
pvars[0] = TotalMarks;
DISPPARAMS disp = { pvars, NULL, 1, 0 };
pDispatch->Invoke(0x1, IID_NULL, LOCALE_USER_DEFAULT, DISPATCH_METHOD, &disp, NULL, NULL, NULL);
}
}
delete[] pvars;

}

[/code]

So, whatz the problem with my wizard?so everytime should i copy it from the dummy proj(actually its not being generated in the dummy proj also, i'm just copying from another working source)? cant we fix it?

[I HOPE BOTH ARE TALKING ABOUT THE SAME ISSUE]

Thanks buddy
V

Jörgen Sigvardsson27-Sep-05 9:44

27-Sep-05 9:44

Frankly, I don't know why the wizard acts like that. IIRC, the wizards use special "markers" in the code, to determine where to inject code. What those markers are, I am not sure.

Have you tried recreating the solution/project? If it's not more than 10-20 files, and has few and non-complex build configurations, then it might be worth the effort to generate a new project, and then add back everything by using the wizard. Be sure to retain the old CLSIDs and IIDs, if your components have been published earlier.

I'm sorry I can't be of much help Frown | :(

--
Keep talking! You're the fool, I'm the preacher.

Eytukan27-Sep-05 23:10

27-Sep-05 23:10

ya jorgen, i had to do like that (copying the the definition from another project). its working fine, but its annoying when i find the class empty. ok thank u so much for ur response pal Smile | :)

thanks
V

Eytukan28-Sep-05 3:24

28-Sep-05 3:24

hi buddy, i've a good news for u, after screwing it up for so long , i found out how to kick it to make it generate the code. before "implementing the connection points", we must compile the .idl file, then its generating the code for Firing Events.. are u happy about my discovery??

regards,
V

Jörgen Sigvardsson28-Sep-05 9:50

28-Sep-05 9:50

Ah, I assumed you had done that already! Big Grin | :-D

I knew about that "glitch" in VS.NET. Thanks for the notification though, I appreciate it! Smile | :)

--
Keep talking! You're the fool, I'm the preacher.

Eytukan28-Sep-05 22:57

28-Sep-05 22:57

you knew it? hmmm.. ok, well some meet again with someother problem, so we'll keep "speaking" ([note]i wont say "talking!!" Big Grin | :-D

)about ATL ..!

bye dude,

Regards,
V

Jörgen Sigvardsson29-Sep-05 4:12

Help needed with ATL OLEDB Consmer

29-Sep-05 4:12

Vivekuniq wrote:
, so we'll keep "speaking" ([note]i wont say "talking!!" )

My signature isn't aimed at anyone.. it's a line from a song. But I think you figured that out. Big Grin | :-D

Next time I won't assume so much. Smile | :)

--
Keep talking! I'm the preacher, you're the fool!

Display avi files

S/Madjid25-Sep-05 23:58

S/Madjid

25-Sep-05 23:58

Hello everybody,
I'm working on an WTL application which has among its tasks to display video files (avi and mpeg). In fact, I don't know at all from where to start!! Can someone give me a little help or orientation? Thanks.

Madjid

-- modified at 6:04 Monday 26th September, 2005

Omar Alvi25-Sep-05 23:36

Omar Alvi

25-Sep-05 23:36

Hello,

I am trying to write an OLEDB consumer in C++ and having problems with it. The database that i am trying to access has 3 binary columns. So i have to use more then one accessor to get the data and that is where i am facing problem. It works fine when there is one binary data column but fails if there are more than one binary column in a talbe. Following is the code

class COLLABORATION
{
	public:
		TCHAR m_ID[TCHAR_COL_LENGTH];
		TCHAR m_PARENTID[TCHAR_COL_LENGTH];
		ISequentialStream* m_DATA;
		ULONG m_DATA_LENGTH;
		ULONG m_DATA_STATUS;
		ISequentialStream* m_TEMPDATA;
		ULONG m_TEMPDATA_LENGTH;
		ULONG m_TEMPDATA_STATUS;

		BEGIN_ACCESSOR_MAP(COLLABORATION, 3)
			BEGIN_ACCESSOR(0, true)
				COLUMN_ENTRY(1, m_ID)
				COLUMN_ENTRY(2, m_PARENTID)
                        END_ACCESSOR()
			
			BEGIN_ACCESSOR(1, false)
			BLOB_ENTRY_LENGTH_STATUS(1
				, IID_ISequentialStream, 
				STGM_READ, m_DATA, 
				m_DATA_LENGTH, m_DATA_STATUS)

			END_ACCESSOR()

			BEGIN_ACCESSOR(2, false)
			BLOB_ENTRY_LENGTH_STATUS(1
				, IID_ISequentialStream, 
				STGM_READ, m_TEMPDATA, 
				m_TEMPDATA_LENGTH, m_TEMPDATA_STATUS)
			END_ACCESSOR()
		END_ACCESSOR_MAP()

};

void CMyDlg::Func()
{
	CTable <CAccessor<COLLABORATION> > collabSourceTable;
	hr = collabSourceTable.Open(seSource,_T("COLLABORATION"),&propset);
	CString strName;
	if ( hr == S_OK )
	{
		if (collabSourceTable.MoveFirst()==S_OK)
		{
			while(TRUE)
			{
				hr = collabSourceTable.GetData(1);
				strName = collabSourceTable.m_NAME;
				hr = collabSourceTable.MoveNext();
				if ( hr != S_OK )
					break;
			}
		}
	}
}

Now i cant understand how to get binary data from the multiple accessors?. When i pass zero to the collabSourceTable.GetData(0);. It returns HR_OK. But when i pass 1 to collabSourceTable.GetData(1) to get the binary data. It gives error, hr = DB_E_UNSUPPORTEDCONVERSION. Can anyone help me with this. Thank you.

-- modified at 5:36 Monday 26th September, 2005

Putting a slider on dialog box causes error

Tomek.Sergey24-Sep-05 4:19

Tomek.Sergey

24-Sep-05 4:19

Hello to everybody!
Let us say, I want to create all the application that uses WTL by my own hands (avoiding using wizards). I want to create a modal dialog, and put some controls there. I write this code :

<br />
#include <atlbase.h><br />
#include <atlapp.h><br />
<br />
extern CAppModule _Module;<br />
<br />
#include <atlwin.h><br />
#include <atlctrls.h><br />
#include <atlframe.h><br />
<br />
#include "resource.h"<br />
<br />
CAppModule _Module;<br />
<br />
<br />
<br />
<br />
class CMyDialog: public CDialogImpl<CMyDialog> {<br />
   public: <br />
     enum {IDD=IDD_DIALOG1};<br />
<br />
   BEGIN_MSG_MAP(CMyDialog)<br />
      COMMAND_ID_HANDLER(IDOK,OnOk)<br />
      COMMAND_ID_HANDLER(IDCANCEL,OnCancel)<br />
   END_MSG_MAP()<br />
<br />
<br />
   LRESULT OnOk(WORD,WORD,HWND,BOOL&) {<br />
       EndDialog(0);<br />
	 return 0;<br />
   }<br />
<br />
   LRESULT OnCancel(WORD,WORD,HWND,BOOL&) {<br />
       EndDialog(1);<br />
	 return 0;<br />
   }<br />
};<br />
<br />
<br />
int WinMain (HINSTANCE hInst,HINSTANCE,LPSTR,int) {<br />
  _Module.Init(NULL,hInst);<br />
<br />
  CMyDialog diag;<br />
  int res=diag.DoModal();<br />
<br />
  _Module.Term(); <br />
  return 0;<br />
}<br />

Than let's create a dialog with IDD=IDD_DIALOG1. I have VS6, so I go to the item in main menu Insert -> Resource... (QUESTION : IS THIS THE RIGHT WAY ?), then I choose Dialog etc. Then I add resource.h and test.rc (let it have that name) to my project. Compiling.... Ok. Running... ALL RIGHT. Now. I take a slider and put it on the dialog. Compile... OK. Running... Ooops. The variable res in the line int res=diag.DoModal() return -1. And of cource I cannot see anything on screen, application terminating.... If I put a button or combo on dialog, everything would be OK. I noticed, that if I put some other controls on dialog then I would have the same trouble ! What's wrong with this ? I suspect, that I do something wrong with resource adding..

BSTR

Eytukan23-Sep-05 3:32