Here's the answer - C / C++ / MFC Discussion Boards

Roger Wright13-Dec-03 10:33

13-Dec-03 10:33

Once upon a time, distributing an Access database project required a special license for the redistributable bits, or the client had to buy Access and install it. I assume that was the Jet dbEngine. When creating a VC++ app that uses a .mdb file created in Access as its datasource, is this still necessary? Or does the driver selected when creating the project contain all the necessary stuff to talk to the database file?

I know I can do this better by developing on SQL Server and distributing MSDE, but this is a tiny db and it's much easier to bang out the skeleton in Access.

"Another day done - All targets met; all systems fully operational; all customers satisfied; all staff keen and well motivated; all pigs fed and ready to fly" - Jennie A.

Re: Database Drivers

Roger Stewart13-Dec-03 13:46

Roger Stewart

13-Dec-03 13:46

Roger Wright wrote:
Once upon a time, distributing an Access database project required a special license for the redistributable bits, or the client had to buy Access and install it.

There is a runtime version of Access included with MS Office 200 Developer. You can dist. the mdb and runtime version of Access to as many workstations as you want.

Roger Wright wrote:
When creating a VC++ app that uses a .mdb file created in Access as its datasource, is this still necessary?

No, a license is not required to distribute the mdb, Jet engine, or MDAC.

If you are using InstallShield to build your installation, (from memory) I think you can select the Jet engine merge module to be installed. However, I recommend distributing, and using, MDAC to connect your database with the application.

Roger Stewart
"I Owe, I Owe, it's off to work I go..."

Re: Database Drivers

Roger Wright13-Dec-03 14:02

Roger Wright

13-Dec-03 14:02

Roger Stewart wrote:
I recommend distributing, and using, MDAC to connect your database with the application.

That's what I was looking to find. Thanks! I've never in the past 12 years made enough money to afford Office Developer edition, so that route was beyond reach. MDAC is the way to go...

"Another day done - All targets met; all systems fully operational; all customers satisfied; all staff keen and well motivated; all pigs fed and ready to fly" - Jennie A.

Re: Database Drivers

Roger Stewart13-Dec-03 14:12

Roger Stewart

13-Dec-03 14:12

I believe whatever front end you come up with via VC++ will be better than using the MS Access database project w/Access runtime Dead | X|

Roger Stewart
"I Owe, I Owe, it's off to work I go..."

Re: Database Drivers

Roger Wright13-Dec-03 15:13

Roger Wright

13-Dec-03 15:13

Definitely! Access' only value is as a quick and dirty tool for making a database file for simple projects. But, since I have it installed, there's no way for me to tell whether my program works on its own, or is drawing from something installed with the Access program. MDAC solves that nicely, and as you mentioned, I can distribute that. Big Grin | :-D

"Another day done - All targets met; all systems fully operational; all customers satisfied; all staff keen and well motivated; all pigs fed and ready to fly" - Jennie A.

simply standard

forjer13-Dec-03 11:03

forjer

13-Dec-03 11:03

As you're using the Standard Template Library.

How to make an auto-scroll ListBox

UWO13-Dec-03 10:24

UWO

13-Dec-03 10:24

Hi all;)
I would like to know how can I make my listbox scroll down automatically when its items is page-full. I think GetScrollInfo, ScrollWindowEx is probably what I need. However, I don't know how to put them together to make an atuo-scroll listbox possible. Can anyone please give me some hints?

regards,
UWO

Here's the answer

v_srinu_26_f13-Dec-03 13:32

v_srinu_26_f

13-Dec-03 13:32

call this function when ever you add a list item
listObject.SendMessage(WM_VSCROLL, SB_LINEDOWN, 0);

Re: Here's the answer

UWO13-Dec-03 19:20

UWO

13-Dec-03 19:20

Thanks for your quick answer! You are really helpful
Wink | ;)

regards,
UWO

Re: How to make an auto-scroll ListBox

Roger Stewart13-Dec-03 14:07

Roger Stewart

13-Dec-03 14:07

If you are using MFC and your listbox is derived from CListCtl:

m_MyList.EnsureVisible( m_MyList.GetItemCount()-1, FALSE );

If using WIN32 inlude windowsx.h and use the following macros:

#include <windowsx.h>
...

ListBox_SetCurSel(hwndCtl, ListBox_GetCount(hwndCtl))

Roger Stewart
"I Owe, I Owe, it's off to work I go..."

Re: How to make an auto-scroll ListBox

UWO13-Dec-03 19:23

UWO

13-Dec-03 19:23

Your solution just work perfect for me, Thanks!;)

regards,
UWO

Re: How to make an auto-scroll ListBox

JWood13-Dec-03 15:14

JWood

13-Dec-03 15:14

Does UWO stand for University of Western Ontario?

My neighbours think I am crazy - but they don't know that I have a trampoline. All they see my head bobbing up and down over the fence every five seconds

Re: How to make an auto-scroll ListBox

UWO13-Dec-03 19:25

UWO

13-Dec-03 19:25

no..It's my nickname only.

regards,
UWO

Re: (?) about STL

Ian Darling13-Dec-03 10:28

Ian Darling

13-Dec-03 10:28

If you mean:

How do I remove duplicated values from a vector, you should look at the algorithm (IIRC) std::unique_copy().

If all you want is a container for unique values, you might want to consider using std::set<> instead of vector.

--
Ian Darling
"The moral of the story is that with a contrived example, you can prove anything." - Joel Spolsky

Re: (?) about STL

Ian Darling13-Dec-03 11:12

Ian Darling

13-Dec-03 11:12

Snyp wrote:
How can I use unique copy to remove duplicates from a vector?

By unique_copying the vector to another vector?

--
Ian Darling
"The moral of the story is that with a contrived example, you can prove anything." - Joel Spolsky

How to find item or string in ListCtrl

vss11113-Dec-03 10:10

vss111

13-Dec-03 10:10

How to find item or string in ListCtrl
I am using finditem but it is searching in first column only.

Re: How to find item or string in ListCtrl

Ravi Bhavnani13-Dec-03 10:48

Ravi Bhavnani

13-Dec-03 10:48

GetItemText()

/ravi

Let's put "civil" back in "civilization"
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XP look on dialog controls

Genije13-Dec-03 9:41

Genije

13-Dec-03 9:41

I want to add XP look to my buttons and ListCtrl (Visual C++ 6.0).
I added manifest file in same folder of my exe file and that works with buttons and edit ctrl, but when I click on vertical scrollbar of my listctrl i get extra lines in ctrl (it is set that list ctrl has gridlines) or they wanish ?! Unsure | :~

Does anyone knows how to solve this problem??

Determining the type of a member variable

Anonymous13-Dec-03 9:22

Anonymous

13-Dec-03 9:22

Hi guys,

Does anybody have an idea how I can get the type of
a class member variable ?

I'm looking for something like:

template<class c=""> swap(C &v)
{
typeof(v.x) t; //<-- t has to be the same type as v.x
t = v.x;
v.x = v.y;
v.y = t;
}

Thanks in advance.

Re: Determining the type of a member variable

#realJSOP13-Dec-03 9:36

#realJSOP

13-Dec-03 9:36

You could use dynamic_cast and if the returned pointer is not NULL, it was a good cast. Smile | :)

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Re: Determining the type of a member variable

Ian Darling13-Dec-03 10:12

Ian Darling

13-Dec-03 10:12

Given that in this case all you want to do is swap the member, why not call swap on that? The nice part about this is that it requires at compile time that what you pass into swap_x_with_y has an x and y member variable. The realswap function will happily just swap over whatever you give it, providing they are the same type.

template<class T> swap_x_with_y(T &v)
{
  realswap(v.x, v.y);
}

template<class T> realswap(T &x, T&y)
{
 T t = x;
 x = y;
 y = t;
}

--
Ian Darling
"The moral of the story is that with a contrived example, you can prove anything." - Joel Spolsky

capture output

thes3cr3t113-Dec-03 8:53

thes3cr3t1

13-Dec-03 8:53

hello,im interested to know if there is a way to capture the output from a program like telnet or something and save it to a text file?
i see no reason why this isnt possible,so if any 1 has any info regarding this,id like to know...

thanks 4 ya time

chris Smile | :)

Re: capture output

BaldwinMartin13-Dec-03 9:05

BaldwinMartin

13-Dec-03 9:05

You may use pipes.

at the prompt type

dir *.* > directory.txt

you may also send the output to 2 devices.

Make a file with all the commands you want to carry out in telnet seperated by a newline.
Don't forget to include q a the end.

then save the file as telnet.cmd or something you will remember.

at the command prompt enter

telnet < telnet.cmd > telnet.res

That will work just fine.

The other way is to echo to a file but that is noit good practice any more because window may not support the src device anymore.

Best Wishes and Happy Holiday's,
ez_way

Re: capture output

thes3cr3t113-Dec-03 9:29

thes3cr3t1

13-Dec-03 9:29

thank's this will work just fine;)

Registry Question ?

BaldwinMartin13-Dec-03 8:47

BaldwinMartin

13-Dec-03 8:47

Hello
Has the registry changed at anytime from win 95 to win XP concerning the following keys?
HKEY_CURRENT_USER\Identities\{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx}\
HKEY_CURRENT_USER\Identities\{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx}\Software\Microsoft
HKEY_CURRENT_USER\Identities\{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx}\Software\Microsoft\Outlook
Express
HKEY_CURRENT_USER\Identities\{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx}\Software\Microsoft\Outlook

Thanks Marty

Best Wishes and Happy Holiday's,
ez_way

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