I'm using PInvoke to access some routines from a third party library, however i'm getting SEHExceptions when trying to use callbacks defined for one particular method. The callbacks are used to provide feedback from other unmanaged methods within the third party library, passing a string back to the calling application containing a status message.
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is there is any 3 rd party library to play an mp3 file other than media player control....
View 2 RepliesI am developing an application and I use a 3rd party library which is basically Native excel. The problem is that this library does not implement an event which is able to notify me when the value of a cell value changes.
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I have an application in VB/C# .NET which needs to interact with a third party API, but I would like to interface it out so I can use a mock API for testing purposes.[code]...
View 2 RepliesI want to access a 3rd Party application in the background with the SendMessage method. It just needs to send a "space" to the software to trigger an action. It is important that this is done in the background because its a periodic event (ca. every 10 seconds), and it should be possible to simultaneously work on the same machine.
I tried to use the same approach which is shown in [URL]
The code I used is as follows:
Const WM_CHAR = &H102
Const BM_CLICK As Long = &HF5&
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd
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I have two classes in two files in a class library project, they are:
Public Class Logins
Public CurrentUser As Login
Public Function Authenticate(ByVal id As String, ByVal pw As String)
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look i need to access to function but this function is found in a library dll, in the object browser appear the description about it using Visual Basic 6.0
Function GetFullUserName() As String
Member of RNASECURITYINTERFACESLib.IRNASecurityToken
method GetFullUserName
i don't how to write the code to access to this function
I have the following projects:
TradingProject (my code) Has reference to TradingLibrary, and to ApiLibrary?
TradingLibrary (my code) Has reference to ApiLibrary
ApiLibrary (3rd party code)
I'm making several projects (like TradingProject) that communicate with a software through use of an existing ApiLibrary. But I want to push generic methods into a library I write: TradingLibrary.
Still, I would like to use some parts of the ApiLibrary directly from TradingProject. However, I then would need to pass an object (of an ApiLibrary class) into a method in TradingLibrary. Where the object should be recognized. However I assume this will be a problem, as TradingLibrary use it's own reference to ApiLibrary, so it will not be recognized as the same classes? Is there some way I can "forward" the ApiLibrary reference from TradingLibrary to MyProject, such that they will use the same reference? Or do I need to duplicate the classes and inherit from ApiLibrary for each class? Like:
NameSpace TradingLibrary
Public Class SomeClass
Inherits ApiLibrary.SomeClass
End Class
I guess that would work, if I do it for all classes I need, but is there perhaps some simpler way I'm not aware of?
how to use the Enterprise Library 5 connecting to a MS Access database using VB.NET 2010 on a windows forms application. Looking for quick code samples on how to add, select, update, delete records from an Access database.I'm trying to adopt Enterprise Library in my applications but I'm not finding much information on it.
View 2 RepliesI'm building a generic Class Library that I will use it in all my projects.
However, I want to know how can I access Resource file from a Class Library ?
I have been using VB6 to manipulate MS Access 2000 databases via the DAO 3.6 library on Win XP. I have recently acquired Visual Basic Express 2010 and I have not been able to port my VB6 code. I can not find any sample code to use MS Access 2000 from VBE 2010. Is it possible to access MS Access 2000 from VBE 2010?
Here is my VB6 code:
Sub Main()
Dim dbJobCPD As Database
Dim rsJob As Recordset
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I have created a Class Library project to create a VB.net 2005 DLL file. I am trying to access My.Settings in this class library project and not able to. How would I do this?
View 15 RepliesI've created a class library and built a dll (release build). I've then referenced the DLL in another project (I've tried several). I can see the namespace and classes in Object Browser and I can declare instances of the classes but I cannot use or see any of the methods or properties! there is no IntelliSense whatsoever and calling the methods manualy results in a 'Declaration expected' error.
Within the class library solution I have a unit test project referencing the class library project which works all works fine (and all the tests pass).
Can anyone provide any pointers to what might be going wrong here? I've built plenty of dlls in the past and have had no trouble referencing them at all.[code]...
I am trying to set command timeout for enterprise library 4.1 data access. I used below code for get command object from Database.[code]....
View 2 RepliesI'm building a generic Class Library that I will use it in all my projects. However, I want to know how can I access Resource file from a Class Library?
View 8 RepliesI've an issue regarding p/invoke from managed to unmanaged code. See my original post at the MSDN forum (as brief summary is seen later in this post). Before I go on, I just want to explain a couple of things: I have a wrapper assembly in net 3.5 that does the actual interop to the unmanaged code. Then I have my console "host app" which uses the wrapper assembly. The solution I came up (I refer to my MSDN post) works when the host app is using .net 4, but it doesn't work when changing the host app to use .net 3.5. When changing, I get a AccessViolationException.
host app: 4.0, wrapper assembly: 3.5
-> works
host app: 3.5, wrapper assembly: 3.5 -> throws
AccessViolationException
Do anyone have a clue to why I get an AccessViolationException? Most importantly, how do I get it working with .net 3.5?
Brief summary on the MSDN post I refered to. I have this messy p/Invoke I need to solve. The C declaration looks like this:
long TBAPI TbeAndring (short,
short,
PTB_PU,
PTB_ANDRING_INFO,
PTB_PARAMS,
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Where PTB means that each argument is a struct pointer to an array of arbitrary length. The structs mostly contains strings, doubles, char and short. Anyway, I ended up with this DllImport statement:
<DllImport(NativeLibraryName, CallingConvention:=CallingConvention.StdCall, CharSet:=CharSet.Ansi, SetLastError:=True)>
Public Shared Function TbeAndring(ByVal sAntMoment As Short, _
ByVal sAntPU As Short, _
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As you see some of the arguments are changed by the unmanaged code as well.
I am trying to access appSettings using the following syntax and I have used it before in my many website projects but not in a class library project. In this class library project I cannot even access the AppSettings Keys. Is there any way I could access the AppSettings Key from my class? Is the class library project's app.config or project structure behave in a different way?
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I have already added Project Reference to System.Configuration and imported in my class. When I run my code it says, "Object not set to an instance of any object".
I have a slew of sub routines that I need to use in my software because each website that I will be accessing don't all use the same methods.....go here...click that...go here...click that...etc etc
So I've divided them into sub routines and call them when I need them but the coding is getting so long that it's becoming confusing to keep up with each sub.
Is it possible to place the sub routines into an independent file like a class and then call them from the file when I need them so I can free up some space to code?
I am listing the following three subrointines....
Private Sub OutPut(ByVal Offset As Long, ByRef path As String) 'Orig
If Not cbFiles.Checked Then
item1 = New ListViewItem(Offset)
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They have the same name but a) different types of aguments or different numbers of arguments. This is legal in VB.
I'm really struggling with the following pinvoke call. I've tried numerous different ways of doing this but still no joy. The call runs through, but I get a 'Bad parameter' message back with suggests there is something wrong with the struct, since I've ran through a c++ example of this code and the parameters are all correct.
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VB 2010 express Win XP pro I'm tryimg to detrmine the time taken for various routines, and not having much luck.From what I can gather, it seems that short times and very long times are a problem, as is my understanding of what I have read. cpu speed shown is correct.I checked a few routines, very short routines return 0, to be expected, ?resolution.Longish times (about 33 seconds with a stopwatch), report to be 177 seconds.
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I'm trying to have it so that when the user selects an item from the combo box, it will display the right nodes for that selection in the treeview control. For example: User selects Artist from the combo box and the treeview displays the letter of the artist. The user selects a letter and it will display all artist with last names beginning with that letter. Unfortunately when I select a selectedindex, the treeview doesn't display anyting, it's blank. What am I doing wrong? Here's the code I'm using for artists:
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Looking at Microsoft's page on Wow64DisableWow64FsRedirection, I see some C code. What if you want to call this function and it's revert from VB.net? So far I have done this:
<Runtime.InteropServices.DllImport("KERNEL32.DLL", EntryPoint:="Wow64DisableWow64FsRedirection")> _
Public Shared Function DisableWow64Redirection() As Boolean
End Function
And I do likewise for the Revert brother function.This seems to work, as the shell command I call after actually finds its exe in system32, but I am not sure about the Revert, does it need a parameter? This Revert page seems to want me to take the output from disable and plug it into the revert call. Does that sound right? How do I change my DLLimport to take in a boolean and actually use it in the Kernal32.DLL function?
I have just upgraded(!) to VS2010, and opened my project from VS2008, which worked, and when i try to run i get a Pinvoke error due to stack imbalance. I am completely lost, on this error. What do i need to do to solve it. The error occurs at the If GetAsyncKeyState(8) Then part of the code below. It is detecting for a backspace being pressed. Private Declare Function GetAsyncKeyState Lib "user32" (ByVal vKey As Long) As Integer
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I have some common code that I would like to share between pages and I have been messing around with App_Code classes which is great but I would also like to use code that affects drop down lists example:
Sub Set_FirmType(ByVal Sender As Object, ByVal E As EventArgs)
subcategories.Visible = "false"
supplycategories.Visible = "false"
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Is their a way to put this in my App_Code class?
Note that I'm aware of other yield in vb.net questions here on SO. I'm playing around with Caliburn lately. Bunch of great stuff there, including co-routines implementation.
Most of the work I'm doing is C# based, but now I'm also creating an architecture guideline for a VB.NET only shop, based on Rob's small MVVM framework.Everything looks very well except using co-routines from VB. Since VB 10 is used, we can try something like Bill McCarthy's suggestion:
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It definitely isn't as elegant as C# version, but it looks to be doable. We'll see if there are any problems with this. If anyone has better idea, I'm all ears.
I have LaPack numerical package , I want to compile with Visual Fortran (INTEL) using vs2008.I want to use the routines from a VB.NET program.How can I call the routines from VB ?
View 9 RepliesI want to delete, copy, move, and rename files using the actual Windows confirmation dialogs.I am using SHFileOperation. My problem is, that, when I want to move a folder with this path:
"C:MyFolderToMove"
And I set the destination to:
"C:UsersTest"
And (THIS PART IS IMPORTANT) the APPLICATION start from say
"D:MyApp.exe"
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I am running Visual Studio 2005 (I tried 2008 and got the same error) using SQLite for a device project. (Windows 6 Mobile)The identical code works perfectly for Windows, but when I execute
f.FileName = PathForDB
SQLconnect.ConnectionString = "Data Source=" & f.FileName & ";"
SQLconnect.Open()
I get the above message. I have tried to "manually" load the DLL at the beginning of my code, but I still get the same message.
I want to enable the 'ReaderMode' for paning/scrolling my control in .Net. Closest thing I found was this Win API function .url....However, I'm not sure how to call this one, in the documentation it says, This function is not declared in any public header. To use it, you must access it as ordinal 383 from Comctl32.dll.I've never called a function that didn't have a name before, can anyone describe how to do this in VB.Net?
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