I'm trying to write a program to control input. Unfortunately, thing always seems to fail.
The thing always comes up with "Application Defined or Object Defined Error". It doesn't help that I can't find the complete listing of error codes[code]...
I am replacing an AutoHotkey script with a VB.net application. Part of the script involves sending keystrokes to an active application. VB uses SendInput and does send the keystrokes, but the application doesn't "get" them, but when AutoHotkey sends the same key to the same application, it works. I have verified that VB is indeed sending the keys properly. Does anyone know how to imitate the autohotkey Send function?
View 7 RepliesI'm writting a "Console Application" using Visual Basic (VB.net) 2008 Express Edition in a Windows XP SP3 environment, and I'm trying to get SendInput to work.
I have been able to get SendKeys working, and I'll use it if I must, but there are some unpleasant control issues. Plus, it's incompatible with Vista, from everything I've heard.
So, I'm including two attachments. The first is a quick-and-dirty working example of SendMessage (actually SendMessageString) which I've used to half-way convince myself that I know how to use the "user32.dll" API's. (For simplicity, I've stripped out all of the error-testing logic.)
The second bit of code is my unsuccessful attempt to get SendInput to send some test keystrokes to Notepad. (I've heard some people say it can't be done in VB.net. Are they right?) To get a clean compile, I had to comment out 'CopyMemory' because how to get it to work. Is it essential to the code?
Tim
Public Declare Function FindWindow Lib "user32" Alias "FindWindowA" _
(ByVal lpClassName As String, ByVal lpWindowName As String) As IntPtr
Public Declare Auto Function FindWindowEx Lib "user32" _
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My curse seems to be SendInput... I have tried many sites and code variations and it never works right... it always returns an error. So can someone just whip together a quick class that has 3 public methods, one for keyboard (that takes a Keys data type) one for mouse, and one for Hardware?
View 7 RepliesI need to send some keys in way like it was sent from keybord
View 1 RepliesI tried this code with windows7 and xp,with 3 different pcs and both with .net4 and .net3.5 and it doesn't work. Basically I want to press the left mouse button. Searching the net I've found that the only decent solution is to use sendinput function, two times (one for click and one for release) the function always returns 0 with an error code "operation completed", but the the click doesn't happen...
[Code]....
is there something wrong with this? its not sending the key
Dim inputEvents As New USER32.INPUT
inputEvents.ki.wVk = Convert.ToInt16(key)
inputEvents.ki.wScan = 0
inputEvents.ki.time = 0
inputEvents.ki.dwExtraInfo = IntPtr.Zero
[Code]...
I'm using sendinput to send keystrokes to external applications launched from my main application. However , the only way I have been able to get it to work is by focusing the external application then sending input. I want to know how to use sendinput to send keys to a background process without giving it focus.
View 1 RepliesI am using SendInput to send some keyboard commands to a dialog box. It is already the active foreground window when I call SendInput. I first send "Return" and then a bunch of other stuff. The dialog box opens with a button selected by default, and when manually selecting Enter, the button is clicked on the dialog progresses to the next screen, but my SendInput call doesn't advance the dialog.
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I asked a similiar question in the VB6 forums with some methods I was trying there, but this is a different method that I'm trying in .Net that I cannot get to work. First what I'm trying to do, I play a game that allows attended macroing, so I'm trying to write a program that I can record and playback macros in. I already have the recording down, and I can playback my macros using older API Keybd_Event and Mouse_event, but not in the game. The game recognize all the mouse events, but does not recognize all the keyboard events. (It is a DirectX based game by the way). For example if I record they keystrokes h e l l o and have notepad in focus and play it back it will type hello in notepad, but in the game they keys are not recognized.
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i am trying to send keystroke using sendinput but it doesnt seem to be sending. I have sendInput declared in user32 class with the input type
dim key as Keys = Keys.A
Dim inputEvents As New USER32.INPUT
inputEvents.ki.wVk = Convert.ToInt16(key)
[code]....
am i setting the flags wrong to send a key? not 0 then a 2?
I got the code from ALLAPI but it gives me errors of declarations that have changed in this version of VB, i tried to update the code but...
Public Class Form1
Const VK_H = 72
Const VK_E = 69
[code].....
Do you guys have any ideas how to do the codings for SendInput?Like a key is pressed and the data depending on what the user had entered in the TextBox will appear in a Notepad and then save it.[code]...
View 1 RepliesI�m trying to achieve mouse movements with SendInput.
There is code that got from Pinvoke, [URL]
<DllImport("user32.dll", SetLastError = True)> _
Private Shared Function SendInput(ByVal nInputs As Integer, ByRef pInputs As InputLanguage,
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Iam wanting touse sendinput in a dos or background type app (can be a regular app thats hidden) that emulates mouse clicks and sends mouse moves to another multimouse application. an project that im working on for my school i work at and i need to send the input to it. The overview of the project is i need to have this code be in a service that runs in the background that when a person does a gesture with my kinect code then it clicks the left mouse or sythesis it with sendinput (need mouse up and down sent for this to work). The end programs that receive input are: a program written in the multipoint sdk and mouse mischief. I though about using the default usb mouse driver as an emulated mouse driver to handle the part about creating a usb mouse device that works
since most newer computers are using usb.
I have a VB program that I'm trying to deploy. On my machine (the app works fine straight from VS), when I try to install it from the webpage, it asks me to setup .net. I only have a choice of repairing or uninstalling .net. I've tried both but both fail at the moment. The problem with the repair is, although it goes through the entire repair procedure, it then asks me to restart my PC, but when I hit 'restart', nothing happens. So I restart manually, but when I try again, I just have to go through the same procedure again.
View 2 RepliesAll 3 statements below do NOT download the file; BUT also do not create any error msgs! owever, when pluggingFTP://localhost/QMSpathFTP/Prozess Akquisition.doc directly into the IE the .doc is shown correctly! I.e., to me, the virtual directory 'QMSpathFTP' is correct!
View 2 RepliesWhy is hi failing to even hit the event? This should be htting the event, I see no reason why it would not hit this event when I press the enter key, instead I get a beep sound.
Private Sub Browser_1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
If e.KeyCode = Keys.Enter Then
WebBrowser.Navigate(tb_Address.Text)
End If
End Sub
The following code works fine in Access 2007 but VB 2005 Dataset refuses to see it. 2 questions Why? and how do I call a function in a Tableadapter query? "sizecats" is a function that extracts a substring depending on the length of ContainerRef.
SELECT sizecats([ContainerRef]) AS [Size], Count(tbl_Bookings_Containers.ContainerUsageID) AS CountOf
FROM tbl_Bookings_Containers
GROUP BY sizecats([ContainerRef]);
I use vb.net to backup sql '05 - '08 databases. It works great on smaller databases. but when it comes to large databases it fails at 30 or 40 percent with the error: The backup or restore was aborted.
Dim objBackup1 As Backup = New Backup() With {.Action = BackupActionType.Database, .Database = Common.DsSettings("DataBase", Nothing), .Initialize = True, .Checksum = True, .ContinueAfterError = True, .Incremental = False, .LogTruncation = BackupTruncateLogType.Truncate}
objBackup1.SqlBackup(objServer)
I am trying to flatten a multi-dimensional array with ConvertAll but I can't get it to work:
Private Function Flatten(ByRef a As Object) As Object
Dim elements As Integer = 0
Dim size As Integer[code]...
Why does it throw NullReferenceException?
I wrote an application on windows XP using visual studio 2008. Based on the .net framework 3.5. For some reason that I do not understand the application refuses to run on windows 7. You would think that if the .net framework 3.5 was installed on the windows 7 machine it would run.
View 10 RepliesI'm catching the following error in a publishing script (VB.Net) I'm running:
Request for the permission of type 'System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
The code that fails is:
My.Computer.FileSystem.WriteAllText(path, content, False)
It runs fine for most of the files but some have a '~' in the path and those ones are all failing.
Just to clarify: i am using the full path an example of the path i am having problems with is "c:/websites/xml/myfile~test.xml" the ones that work are "c:/websites/xml/myfiletest2.xml"
I currently have this line of code which has been working for the past 6 months:
If IsNumeric(txtProductID.Text) Then
...do stuff
Else
Dim msg As String = "Error!"
End If
All of the sudden, no matter what kind of entry is put in txtProductID (including plain numbers), it fails! Is there reason for me to be going crazy over this?
I am currently using the AsyncFileUpload in my VB.NET web app. Locally it works perfectly, however on the server it fails to upload a small file (<9k). I can't even seem to debug this as in JavaScript handlers I have no idea as to how to get the error reason.
function uploadError(sender,args) {
$get("<%=LabelErr.ClientID%>").innerHTML = "Unable to Upload file for the following reason: ", "<span style='color:red;'>" + args.get_errorMessage() + "</span>";
[code].....
A VB2010 program fails to build because it doesn't recognise left() and right(). mid() works, though.
Microsoft.visualbasic.left() works ok.
Yet, in another VB2010 program, left() and right() work ok.
I have just finished my application using VB in Visual Studio 2005 and it works fine on my Win 7 development machine. But when I install and run it on an XP machine it fails with an unhandled exception:System.Runtime.InteropServices.COMException (0x80040154): Retrieving the COM class factory for component with CLSID {E8D851FA-9967-4ADF-9644-0183B9B1EA68} failed due to the following error: 80040154.
I've googled the error message and the solutions seem to be 1) compile as x86 (was doing that anyway), and 2) register the dll on the machine But firstly I'm not sure which dll I need to register, and secondly I don't want to be going around registering dlls - the whole point of the installation programs is that it should just install and configure everything automatically..
I am getting one issue while working with DTS Package using VB.Net application. I am using the following code to execute the DTS package.
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My problem is that when trying to print out a excel worksheet, after it has just beeen printed out onces. It gives me this error: "Object reference not set to an instance of an object", when trying to open the existing worksheet(the template)
I've really tryed to fix it, I think that the problem is that after the first print, i need to clear the worksheet and the excelapp.[code]...
I am trying to insert a picture in the RTB but my system hangs when I try to do it... No error message... it simply hangs... I also get a tough time calling the Task Manager to end it...
This is the code that I am using...
Is it going into an infinite loop?
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _
Handles Button1.Click
[Code]....