Visual Basic

17-Nov-04 3:21

I have a function in a VC Dll that has arguments which are LPCTSTR.
I am trying to call the function in VB, but I'm having problems.
I declared the function in VB as follows:

Private Declare Function function_name Lib "dll_name" _
(ByVal arg1 As String, ByVal arg2 As String) _
As Boolean
Both arg1 and arg2 are LPCTSTR.

Does anyone know how to use a DLL function that has LPCTSTR arguments?

Thanks.

Mike Ellison17-Nov-04 6:50

Mike Ellison

17-Nov-04 6:50

Hi there. I think the declaration of ByVal arg2 as String is correct for working with LPCTSTR types. I wonder if declaring the return type as Boolean is where the problem is. Try declaring the return type as Long instead.

SarahAmelia17-Nov-04 7:47

17-Nov-04 7:47

The return type in the DLL is Boolean. I tried declaring the return type as Long, but it doesn't seem to work.

I'm trying to set an If statement to ensure the function is working properly:

Dim errtcp As Long

errtcp = function_Name(txtip, txtport)
If errtcp = 0 then
isopen = true
else
msgbox "error"
exit sub
end if

The function always seems to open, errtcp = 0, even though in certain cases I know it should not work.

Do you have anymore ideas?

Mike Ellison17-Nov-04 7:52

Mike Ellison

17-Nov-04 7:52

Hi there. So the function is being called successfully then, and seemingly returning 0 in all cases? Would you have the source code for the C function itself?

SarahAmelia17-Nov-04 8:04

17-Nov-04 8:04

Here is the C code:

#if defined(_WIN32) || defined(WIN32) || defined(__WIN32__)
#define API__declspec(dllexport)
#else
#define API
#endif

API boolean function_name(LPCTSTR arg1,LPCTSTR arg2 );

I'm thinking the API has something to do with my problem.
Thanks for your help!!

MohammadAmiry17-Nov-04 23:31

MohammadAmiry

17-Nov-04 23:31

Hi I you must use __stdcall in the functions exported to VB:

(if I remember correctly) the usage is like this:

<br />
API __stdcal boolean function_name(LPCTSTR arg1,LPCTSTR arg2 );<br />

SarahAmelia18-Nov-04 1:08

parsing query in data report in runtime

18-Nov-04 1:08

Sorry about that. Here is the code I am using. I already updated to _stdcall. I submitted the old version of the code by mistake.

#if defined(_WIN32) || defined(WIN32) || defined(__WIN32__)
#define API
#define CALL __stdcall
#else
#define API
#define CALL
#endif

API boolean CALL function_name( LPCTSTR arg1,LPCTSTR arg2);

The function is recognized in VB fine, I just can't seem to pass the arguments properly. Any Ideas??

anj198317-Nov-04 0:55

anj1983

17-Nov-04 0:55

i need to print report using datareport but i want to give query in runtime but i know how to parse query using data environment

leo
Kathmandu, Nepal

Posting data to php file

celebisson17-Nov-04 0:39

celebisson

17-Nov-04 0:39

I have a problem.I am trying to post data from vb.net file to php file.I have achieved this issue in asp file,but I can't realize on php file.Here is my pseudocode for asp file:
Request = WebRequest.Create("http://" & Me.TextBox3.Text & ":" & Me.TextBox4.Text & "/default.php")
Request.Method = "POST"

Dim vHeaders As Object
vHeaders = "Content-Type: application/x-www-form-urlencoded" + Chr(10) + Chr(13)

Dim sUserNameParameter As String = "UserName="
Dim sPasswordParameter As String = "Password="
Dim sPostData As String = sUserNameParameter & Me.TextBox1.Text & "&" & sPasswordParameter & Me.TextBox2.Text
Dim oByteString() As Byte
oByteString = ASCIIEncoding.ASCII.GetBytes(sPostData)

Request.ContentType = vHeaders
Request.ContentLength = oByteString.Length

Dim myStream As Stream
myStream = Request.GetRequestStream()

myStream.Write(oByteString, 0, oByteString.Length)
myStream.Close()
Request.Timeout = 10000
Respond = Request.GetResponse()

After that code , I take the response from the asp file and I process the data belonged to the response.

So, How can I post data to php file served by apache server?
Thanks...

VBS to AutoReply

Electrolite16-Nov-04 23:33

Electrolite

16-Nov-04 23:33

Hi People,

After several unsuccessful attempts to use Outlook 2002/ 2003/ Exchange rules, I am unable to autoreply to all mesages received to a particular inbox.

I have set up a new mail enabled user with the sole purpose of autoreplying to messages sent to a distribution list of which this new user is a member.

Are any of you VBS guru'a able to come with something which would do the trick?

Many, many thanks in advance Smile | :)

Binding class objects to datagrid

Member 116124816-Nov-04 22:57

Member 1161248

16-Nov-04 22:57

I am binding a class object to datagrid.But it is not editable.I want to make it editable.can anyone help me.....

Check node level in tree view control

Mekong River16-Nov-04 21:13

Mekong River

16-Nov-04 21:13

Hi, i have an item in my tree view as the below structure.

Fruite
    A
        Apple
    B
        Banana
    C
Sport
    F
        Football
    R
        Running
    S
        Swimming

In this view I assume that Fruite and Sport item is located in the 1st level. For A, B, C, F, R and S is located in the 2nd level and Apple, Banana, Football, Running and Swimming is locate in the 3rd level. My question is, in the run time my user choose Foodball (mean they choose the 3rd level) how could I prompt the user that they choose the 3rd level? Or if they choose S, How could I know that they choose the 2nd level? Can anyone give me a sample code to do that?

A thousand mile of journey, begin with the first step.

APO-CEDC
Save Children Norway-Cambodia Office

Bootstrapper

nitin_ion16-Nov-04 16:37

nitin_ion

16-Nov-04 16:37

How to pack MSDE with the .Net setup and set a sequence that MSDE is installed first and then the application.Although bootstrapper helps in installing MDAC and .Net framework on the target machine if they are not found, how can we set a sequence in bootstrapper to install MSDE.

CodeWell18-Nov-04 12:19

CodeWell

18-Nov-04 12:19

Short answer:

1. Install the bootstrapper on your development machine
2. Create a setup project for your app
3. Use the bootstrapper to mask your setup project.

Long(er) answer:

1. you do not have to setup any sequence. The MSDE bootstrapper has the sequence built in already
(Install .Net, Install MSDE, Install your app). You cannot change that sequence. That is all the bootstrapper does.
2.There are some configuration options but they relate to whether you want to use a strong password on the sa account (of MSDE) and/or hard coded paths for the databases. Also some settings for what to dislay in prompts and such...
3. The bootstrapper doc is typical MS (sparse and cryptic) but the bootstraper is so simple that the MS documentation is all you need.

nitin_ion18-Nov-04 18:49

nitin_ion

18-Nov-04 18:49

I'm trying to use bootstarpper for deploying msde but to no sucess.tell me in how to use it

CodeWell18-Nov-04 21:00

CodeWell

18-Nov-04 21:00

Not to to be a pain in the neck... but why don't you tell me how have you tried and I may be able to tell you what you have done wrong.

Only say this because I find the instructions from MS so straight forward I see no way I can do a better job than they did.

Download from here (just in case you are talking about the .net bootstrapper and not the MSDE bootstrapper) http://www.microsoft.com/downloads/details.aspx?familyid=6e9a7403-c4ba-4d98-bb0b-2c9d6414071f&displaylang=en[^]

How to use it here: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnmsde/html/msdedepl.asp[^]

nitin_ion18-Nov-04 21:36

nitin_ion

18-Nov-04 21:36

i m using the same toolkit sample the problem is at step 3 of MSDE Bootstrapper it says the location does not contain any valid MSDE files which i have populated with sql database file and if u can tell me what to put for four value in the combo box.