coming from VB6 I've been using the windows API for many years. Now I'd lke to do the same on .NetMy question is, what would happen if I build for 'AnyCPU' and the application calls Kernel32 while running on a 64bit machine ?
View 1 RepliesI wonder if/how to use a 32 bit DLL on a 64 bit machine. The situation is like follows:Autocad Inventor(64 bit program) can launch plugin DLL's. The plugin DLL in this case is programmed with VB.NET 2008 Express edition. As far as I know, I can only choose "Any CPU" when building the DLL with the Express edition. This DLL makes uses of a COM object called Isah IERPlink, a piece of software that is used with a 32 bit package. So in my bin directory this DLL will be added "interop.IERPlink.dll". I guess this DLL is specified for 32 bit CPU's, but I'm not sure.
View 2 RepliesI am moving to a Windows 7 64-bit development machine. Talk about causing problems. I've Googled, but can't seem to find much to help my specific needs. I'm hitting maximum errors in my IDE error list, so I won't start listing them. I've tried targetting both x86 and x64, but I still get errors out the wazzu. Is there a good starting point for me to learn how to do this? or should I just start going through the errors and trying to correct them one by one?
View 2 RepliesI have some programs written in VB2010 using functions from a DLL. I have compiled and run these programs on a 32bit XP computer and a 32bit Win7 computer and have had no problems accessing the DLL.I have published an installation of these programs and tried running the install on a 64bit Win7 machine and the installation is performed correctly. It installs the programs and copies the required DLL into the same folder. the problem is that whenever I run the software and try to access the DLL I get errors.
The error says something like:
An unhandled exception has occurred in your application. An attempt was made to load a program with an incorrect format. (Exception from HRESULT:0x8007000B)
If I click past it the software runs and all of the forms are loaded properly, but anytime in the software if I try to access the DLL I get the same error.I am declaring functions in the DLL like this:
Public Declare Function OpenDriver Lib "OP815M.DLL" (ByVal handle_Renamed As Integer) As Integer
I have also tried placing the DLL in the system32 directory and also the sysWOW64 directory and that did not help as well.I do recall that hardware drivers need to be properly signed and pass the Microsoft Logo testing. Must I get the DLLs I am using properly signed?
Edit: Also it might be fair to mention that I have used the DLL with another program written in C, which would run in the DOS command line in Windows and it correctly accesses the DLL on a 64bit machine, but just when run from the DOS command line in windows.
I'm using Visual Studio 2010 Express running on Windows 7 64-bit. I get the same error as detailled in this link [URL] .I need to work with some data to develop the system. I think I can only do this by changing the Copy to Output Directory file property to "Copy if newer" to prevent the debugger from losing it.However this causes TableAdapter.Fill to exit from the sub immediately after executing leaving behind the other code in the form "Add_Load" routine.
View 1 RepliesI want to migrate vb.net project onto linux platform using mono, but I am getting one problem system.dllnotfound exception: kernel32.I like to ask ,when does visual basic add this kernel32 dll. can I remove this kernel32 dll from my project?
View 2 RepliesI have a multi-threaded report engine application. I know that if I want to pause a thread for an interval I can use Thread.Sleep. What I need however, is to be able to suspend the entire process including all threads for a set period of time. In the past, I've used the Sleep API from kernel32.
It appears though that it's only "sleeping" my current thread and not the entire process which is not what I expected (now that I've read the documentation I realize that Thread.Sleep is probably the managed implementation of this API which is why it behaves as it does). So, my question, how do I force the entire application (and all of its threads) to pause the for the interval and not just the thread calling it? Private Declare Sub Sleep Lib "kernel32" (ByVal dwMilliseconds As Int32)
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 get this during debug Unable to find an entry point named 'CloseHandleA' in DLL 'kernel32'.I get no compiling errors, I just get this Debug error :/
View 6 RepliesI develop an application using vb.net.application will run on client server architecture.when we try to execute the program in client side then it will give me an error which is related to sqlclientexception.how can i handle this situation.i used vb.net 3.5 as front end and sql server 2000 as back end.i have done total coding with system.data.sqlclient namespace.
View 6 RepliesI've inherited a lot of custom made software for an office, and, while managing it, I've found it performs differently from machine to machine.I mean, some controls get painted in weird ways in some machines but well in another, or just work differently, like in some machines clicking something selects it, and in the next machine clicking the same thing makes it editable.I suspect, o course, of the myriad of DLL the software loads
View 2 RepliesI want to block a perticular machine from accessing my machine..Both the machines are in LAN..I dont want a perticular machine to access my computer How can i achieve this...I want to do this using VB.NetAny idea....
View 9 RepliesI'm using the following code to iterate through and find windows containing specific strings in their title bars. I have two projects containing this identical information, yet for some reason - it works when targeted to x64, but FindWindowLike returns 0 always on x86. I need this to run in x86.I am developing this on Windows 7 x64, but it needs to run on my machine as well as XPx32. What I can't fathom is why it compiles/runs on x64 but not x32 (considering I'm targetting user*32*.dll)
View 2 Repliesi wrote a programm that reads the memory of a program.it worked at xp and vista but not at windows 7 i builded it with microsoft visual basic 2008 express edition.the code looks like this:
Public Declare Function GetWindowThreadProcessId Lib "User32" (ByVal hwnd As Integer, ByRef lpdwProcessId As Integer) As Integer Public Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Integer, ByVal bInheritHandle As Integer, ByVal dwProcessId As Integer) As Integer Public Declare Function ReadProcessMemory Lib "kernel32" Alias "ReadProcessMemory" (ByVal hProcess As Integer, ByVal lpBaseAddress As Integer, ByRef lpBuffer As Integer, ByVal nSize As Integer, ByRef lpNumberOfBytesWritten As Integer) As Integer
[Code]...
Can I use Long for array indexing? If no what could be done to manipulate large byte arrays (>32bit)?
View 5 RepliesI have an application that I built in VB.Net 2008 on Windows XP for Any CPU that I would like to run on Windows 7 64bit. Is this possible from Windows XP or do I need to compile and develope on Windows 7 64bit for it to work?
View 10 RepliesVB.NET 2008 can make 64bit applications?
View 5 RepliesThere are a few threads on these forums about this question, but I need a definite answer.
View 10 RepliesI am using Visual Basic 2008 Express Edition and I want to create a 64bit application, but don't know how.
View 9 RepliesDepending on what component is handling the print for you, some of them are not 64 bit ready (i.e. 32 bit only). To use them you must compile your application as 32 bit only. It will then run on the WOW platform that Win7 supplies.
You change this option on the PropertiesCompile screen. Press Advanced Compile Options and review Target CPU:
I've downloaded the 64bit debug symbols and told the IDE where they were located. But for some reason, VS won't build a 64bit debug EXE.
This is my first time doing 64bit so I never had to worry about it before. Is there something I need to do in the IDE that I don't know about? I went to Project Properties and set things to 64bit debug. But when I compile the program, it makes a 32bit program.
will .net framework3.0 application run on 64 bit operating system
View 5 RepliesI'm getting a new laptop with pretty free hands as to what to get.Most I like come with Windows 7 64bit and I'm a bit cautious about that as I have Vista 64bit on a stationary at home. Not completely happy with that.
I have learned that the Jet database - that I use a lot - does not run on Vista 64bit, but how's the story with Windows 7 64bit. As I will be doing a lot of programming on the new laptop (and I need to get moving again soon - busy!!) I would like to know of potential problems up front.
I'm using Visual Studio 2008 programming VB.Net
I have an old 32bit vb type app and we're running it on windows 7 64bit sp1. On one computer it works fine, on another it doesn't work right. Do you know how we could debug this and figure out what's causing it? Could a different CPU or bios/chip set have something to do with it?
This is the thing we're using specifically:[URL]...
How to read from a DBF file on a 64bit OS using VB.Net?
View 3 RepliesWhen I'm trying to register this it gives an error.
View 4 RepliesI had a vb6 applications which using following dll files 1. shell32.dll 2. user32.dll 3. comdlg32.dll 4. apigid32.dll. It is working fine on vista 32bit OS . Now i am trying to run my application on Vista 64bit OS.
Is it working fine on vista 64bit OS with out any changing in vb6 code?Is there any problem with this above mentioned dlls on Vista 64bit OS?
Well how can I do this? So my app is faster?
View 5 RepliesDoes the NDde class work on 64 bit platforms?
I have used it successfully on 32 bit Win XP VB2008 Express application, but I am having trouble in 64bit Win7 environment.
Specifically the .Connect method is throwing an exception {"The client failed to connect. Make sure the server application is running and that it supports the specified service name and topic name pair."} NDde.DdeException
I have a .net Application that writes text to a serial COM port, a POS reciept printer to be more exact. i am using the Rs232 class library to write and read to a serial device.My problem is now with some clients that have updated their operatingsystem to WIN7 64bit version, have trouble to create a connection to the COM-port. the com-port seemes to get occupied with some other process and that blocks my application to opening a new connection. so for my question, does anyone know how i can close all connections to a com port? or see whats blocking it? once again this seems to only to affect win7 and 64bit users.
View 1 Replies