C / C++ / MFC Discussion Boards

Re: How to call a VBScript function from an ActiveX (in VC++6)

thanh-hai.bui6-Jul-05 5:27

thanh-hai.bui

6-Jul-05 5:27

yeah, that's right

hzocm

Updating Data from Multiple tables in C++ Database Programming

Wisdom20046-Jul-05 3:19

Wisdom2004

6-Jul-05 3:19

Hai Guys,
Thanks Osama for the reply. I got the Answer.

I have a major problem on Updating data from two or more tables in Visual C++ Database programming. I have looked at table joins they are read only. I want to work with and update data from two or more tables in Visual C++ 6.0.

Can any one be of help.Thanks in advance.

Wisdom.

Re: Updating Data from Multiple tables in C++ Database Programming

David Crow6-Jul-05 3:40

David Crow

6-Jul-05 3:40

As you have already discovered, joined tables are read-only. You'll need to update each table separately.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

XML Driver

abhijeet_contact6-Jul-05 2:41

abhijeet_contact

6-Jul-05 2:41

Hello Everyone!

I need to access data from XML file with regular database interface.
So that I can use SQL like syntax for accessing data.
(I am working on VC++ 6.0 & Oracle database)

I searched for it & came to know that there is something like ODBC driver for XML.

Someone please tell me where to find any such driver( free ).
& also how to use that.

If anybody have other solution , that will be good.

With Regards

Abhi

Buttons in Balloon tooltip

Asha Udupa6-Jul-05 2:30

Asha Udupa

6-Jul-05 2:30

Hi
Is it possible to add buttons to balloon tooltip?

Regards

Re: Buttons in Balloon tooltip

ThatsAlok6-Jul-05 19:59

ThatsAlok

6-Jul-05 19:59

Asha Udupa wrote:
Is it possible to add buttons to balloon tooltip?

Ms. Udupa,
Check, if this article of any help :-
http://www.codeproject.com/miscctrl/pptooltip.asp[^]

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta

strsafe.h / _s "replacement" for other compilers than VC8?

peterchen6-Jul-05 1:56

peterchen

6-Jul-05 1:56

I'm (proactively) checking my code against VC8 Beta 2, to find any porting issues.

VC8 uses strsafe.h and "tuned" C Runtime headers, that flag the "old" C string APIs as deprecated, and encourages use of the (safer) "_s" - variants.

Is there any header that allows to compile such code on other compilers (VC7, or MyOwnHomeGrownSeePlusPlusThingie)?

Pandoras Gift #44: Hope. The one that keeps you on suffering.
aber.. "Wie gesagt, der Scheiss is' Therapie"
boost your code || Fold With Us! || sighist | doxygen

barcode library

a_du5-Jul-05 23:42

a_du

5-Jul-05 23:42

some one can recommend a free MFC library that can generate barcodes with types: code-39, code-128, code-2 of 5, EAN-8 and EAN-13
Thanks a lot.

Re: barcode library [edited]

toxcct6-Jul-05 1:09

toxcct

6-Jul-05 1:09

~~there are plenty of them here[^]~~
did you search a bit ? Smile | :)

search codeproject for barcode (and article set on the combobox)...

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Re: barcode library

Bob Stanneveld6-Jul-05 1:49

Bob Stanneveld

6-Jul-05 1:49

Here is an empty search page.

I tried to copy that link a few weeks ago to and foud that it doesn't work since the search parameters are not passed via the URL. You can give the search keywords instead.

Behind every great black man...
... is the police. - Conspiracy brother

Blog[^]

Codebar library

a_du5-Jul-05 23:41

a_du

5-Jul-05 23:41

some one can recommend a free library that can generate codebars.

How to create a localised MFC resources DLL?

Kri55-Jul-05 22:44

Kri5

5-Jul-05 22:44

Anyone knows how to create a separate MFC resources dll using VS6?

I tried using the Dynamic DLL AppWizard to create an empty dll project, added a dialog and saved it into a new .rc file, and added this new .rc file to the project; but when i tried to compile it showed me a link error LNK2001: unresolved external symbol __DllMainCRTStartup@12. I think it's expecting the usual DLLMain functions, but i want to avoid that.

Any ideas anyone?

Re: How to create a localised MFC resources DLL?

Kri55-Jul-05 23:38

Kri5

5-Jul-05 23:38

Ok i found out my mistake - i left out the /noentry link option to prevent the linker referring to the DLLMain function.

Re: How to create a localised MFC resources DLL?

Blake V. Miller7-Jul-05 16:50

Blake V. Miller

7-Jul-05 16:50

I also think on occasion these types of files are given the extension .RLL so that they are not summarily loaded by other programs.
Just a thought if you have any say in the matter.

Re: How to create a localised MFC resources DLL?

ParagPatel18-Nov-09 22:59

ParagPatel

18-Nov-09 22:59

Hi,
I am going through same issue. I have used /noentry link option but still issue is there.

Platform:
eVC++ 4.2
SDK: pocket pc 2003

Any idea?

Thanks in advance

Parag Patel
Sr. Software Eng, Varaha Systems

std::ifstream trouble

Bob Stanneveld5-Jul-05 22:29

Bob Stanneveld

5-Jul-05 22:29

Hello,

I once again have problems with the file iostreams from the STL provided with visual studio (2005).

I use the std::ofstream to write data to a file. I verified all the data and everything here works like a charm. The problem here is when I try to read the data back from the file using the std::ifstream class. It reads more bytes than I say it should read. Take a look at my code:

void ReadData(std::ifstream& InFile, char* pData, size_t nCount)
{
	assert( pData );
	assert( nCount > 0 );

	int nPos = InFile.tellg();

	try
	{
		for( size_t i = 0; i < nCount; i++ )
		        (*(pData + i)) = InFile.get();

                // I also tried using:
                // InFile.read(pData, nCount); 
                // but this gives the same error...
	}
	catch( std::exception& ex )
	{
		InFile.seekg(nPos);
	}
}

I removed all the debug code and output statements. My scenario is as follows:
- I have a binary file,
- I read (nCount = 410) bytes
- The stream reads 499 bytes Confused | :confused:

I really don't know what might be wrong here.

Behind every great black man...
... is the police. - Conspiracy brother

Blog[^]

Doh!

Bob Stanneveld5-Jul-05 23:08

Bob Stanneveld

5-Jul-05 23:08

Well, urm... D'Oh! | :doh:

I opened the stream in text mode (default) and it should be opened in binary mode. I guess I got confused with MFC's CFile class, which always doesn't care about text and binary mode. It just doesn't manipulate data.

Behind every great black man...
... is the police. - Conspiracy brother

Blog[^]

Rebar resizing

__makaveli__5-Jul-05 22:12

__makaveli__

5-Jul-05 22:12

I have finally managed to get a rebar working on a MDI window, my problem now is that when the window resizes horizontally the rebar does not so it leaves a blank area next to the bar.

What do I need to do to make it size properly with the parent window?

Thanks in advance!

directshow

URtruefriendalways5-Jul-05 22:03

URtruefriendalways

5-Jul-05 22:03

Please let me know which interfaces of directshow will get me information of all types of media files(audio,video,dvd etc) such as duration, type, album, genre,playlist etc. I want to match these info with that available in windows media player.

MDI Parent Size Problem

yccheok5-Jul-05 21:51

yccheok

5-Jul-05 21:51

hello all,

currently, I am trying to have fixed size in my parent mdi.

1. in my PreCreateWindow of my parent mdi, i try to use

cs.x = A_FIXED_X_SIZE
cs.y = A_FIXED_Y_SIZE

however, when my app startup, i didnt get the size i want for parent mdi. i have to double click the title bar of the parent mdi to get my desired size. how i can get my desired size immediately once the app startup?

2. although i disable the maximize, restore button, user still can size the parent mdi by moving the mouse cursor to the border of the window. how can i prevent user from re-sizing my mdi?

thank you very much

cheok

Re: MDI Parent Size Problem

sayup5-Jul-05 22:19

sayup

5-Jul-05 22:19

I also need to fix the size of my child window.How did u proceed in setting size?Can you elaborate more on the two statements you have written.You have used CPoint class?
please reply urgently

Re: MDI Parent Size Problem

David Crow6-Jul-05 2:41

David Crow

6-Jul-05 2:41

yccheok wrote:
1. in my PreCreateWindow of my parent mdi, i try to use

cs.x = A_FIXED_X_SIZE
cs.y = A_FIXED_Y_SIZE

cs.x and cs.y are for the left and top sides respectively. You also need to assign values to cs.cx and cs.cy.

yccheok wrote:
2. although i disable the maximize, restore button, user still can size the parent mdi by moving the mouse cursor to the border of the window. how can i prevent user from re-sizing my mdi?

Remove the WS_THICKFRAME style. See here.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: MDI Parent Size Problem

sayup6-Jul-05 5:07

sayup

6-Jul-05 5:07

hello,
thanks for replying.But since i am a novice programmer I would appreciate if you would elaborate more on this code.Like how your using the code? Are you using CREATESTRUCT and CPOINT class? and are you making changes only in the PreCreateWindow()of each view window?
Please expalin in detail

thanks once again

Re: MDI Parent Size Problem

David Crow6-Jul-05 5:56

David Crow

6-Jul-05 5:56

sayup wrote:
I would appreciate if you would elaborate more on this code.Like how your using the code?

Was it not explained well enough?

sayup wrote:
Are you using CREATESTRUCT and CPOINT class?

The PreCreateWindow() method uses the CREATESTRUCT structure. Did you not notice that in your code snippet?

sayup wrote:
are you making changes only in the PreCreateWindow()of each view window?

No, this only happens in the frame (i.e., the "parent").

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Simultaneous access to a serial device from two threads

Juergen Kordes5-Jul-05 21:30

Juergen Kordes

5-Jul-05 21:30

Hi,
can anybody tell me how to access to a serial device from two threads simultaneously? The problem: I open a serial device in a function (with 'CreateFile(...)') and then I start one thread for writing to this device and one for reading. Reading and writing must be independent, because I can receive unexpected data or have to send some unexpectedly.
Passing the device's handle to the threads just lets one thread (the one which tries to access later) crash. In the writing thread I call 'WriteFile(hdlSerDev,...)', in the reading thread I call 'WaitCommEvent( hdlSerDev,...)'.

Juergen Kordes

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