This code worked fine in WinForms under .NET 3.5, but since I've started using WPF and .NET 4.0, it no longer works (although I'm not sure if this is a coincidence or not). The purpose of this is to detect if a mouse button (or multiple mouse buttons) is being pressed outside of the application.[code]...
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The following code (calling proc DiskFreeSpace) throws an "unbalanced stack" error message.
Private Declare Function GetDiskFreeSpaceEx Lib "kernel32" Alias "GetDiskFreeSpaceExA" (ByVal lpDirectoryName As String, _
ByVal lpFreeBytesAvailableToCaller As Long, _
ByVal lpTotalNumberOfBytes As Long, _
ByVal lpTotalNumberOfFreeBytes As Long) As Long
[code]....
Additional note: My function does need to work for UNC paths also (local and/or network).
I'm converting some C# code to VB, but the VB code gives me an 'unbalanced the stack' error.A call to PInvoke function 'Application.WinPcap:: pcap_ findalldevs' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.This works fine. [code] Here I get the 'unbalanced the stack' error on the line: "If pcap_findalldevs(tmpptr, err) = -1 Then".The only difference I see is "ref tmpptr" in the C# code, but I'm not sure how to translate that to VB. [code]
View 1 Repliesi have an error when im using a function in dll. i declare this( "Private Declare Function SetChannel Lib "StreamReader.dll" (ByVal freq As Long, ByVal smyb As Long, ByVal pol As Long, ByVal fec As Long, ByVal lof1 As Long, ByVal lof2 As Long, ByVal lofsw As Long) As Boolean") [Code]
this is that error"A call to PInvoke function 'skynet!WindowsApplication1.Form1::SetChannel' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.".
I recall in C++ that there is a function named System that can execute an MS-DOS Batch command (such as echo, pause or title) and have searched for an equivalent in VB.NET
Finally I found the api HERE and tried it
Module Program
Declare Function sys Lib "msvcrt.dll" Alias "system" (ByVal command As String) As Integer
[CODE]...
After "hello world!" outputs to the console I see this error QuoteA call to PInvoke function 'ConsoleApplication1!ConsoleApplication1.Program::sys' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.
Why this error occurs or a better way to declare the api? I am using .NET Framework 4.0.
I have created a webcam application in vb2010, when I run the app I get a run time error, please see below PInvokeStackImbalance was detected Message: A call to PInvoke function 'WebCam!WindowsApplication1.WebCamMainForm::SendMessage' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.
it is coming up on this block of code'This sub will open the preview window
Private Sub OpenPrewiewWindow()
Dim iHeight As Integer = WebCamPictureBox.Height
Dim iWidth As Integer = WebCamPictureBox.Width
[code]....
I cant make my auto clicker on hotkeys, i tried this[code]...
View 2 RepliesI'm using the following code and it's bringing up this error 'PInvokeStackImbalance was detected'.
Public Class Form1
Private Declare Function GetAsyncKeyState Lib "user32" (ByVal vkey As Long) As Integer
[code]....
I did alot of work then I suddenly get this error message
View 2 Repliescould you tell me, why I get the stack overflow error on this code?
Dim ev As Double = datum.Year * 365 * 24 * 60 * 60
Dim honap As Double = datum.Month * 30 * 24 * 60 * 60
Dim nap As Double = datum.Day * 24 * 60 * 60
Dim masodpercek As Double = ev + honap + nap
The double datatype should be enough.
I have a program that sends out mass emails. My problem is that at the end of the program....I keep getting a "Stack Overflow" error and I cannot figure out where this might be happening. This program is a VB.Net 2005 console application which is ran manually from the command line. The code below that I have posted is what sends the actual email. I don't think it has anything to do with this error but my question is this. Do I need the highlighted line of code? I'm thinking I don't since the mail object is already being disposed...but I'm not positive.
Dim oEmail As New System.Net.Mail.MailMessage()
oEmail.From = New MailAddress(strSender)
oEmail.To.Add(strRecipient)
oEmail.Subject = strSubject
[code]...
I have just a form in my VB.Net project and even when I try debugging that - there is nothing going on besides the form being loaded - I get the error: No symbols are loaded for any call stack frame. The source code cannot be displayed.
View 3 RepliesI created a class that I use for error logging. I have one method that accepts a parameter as an exception. With that exception, I created the error log and I write the message as well as the stack trace. With this, I'm finding that I'm not always getting detailed information. Usually, the stack trace shows me line number in which the error occurs, which allows me to pinpoint the issue.
[Code]...
My Intent:I am developing an application for myself which will take a series of keycodes pressed by me(even if my program is not in focus) and execute commands associated with it.It is basically like developing hotkeys.What I Have Tried:I have searched well and tried to implement GetasyncKeyState() in my program and it works well....but the problem is, it tells if a certain key is pressed but not which key was pressed last, which is what I want........I need to know which key was pressed so that I can make a word out of it and check if it equals my predefined names to execute the command, something like this:
Dim word = lastkey
word = word + lastkey
if (word = "startnotepad")
[code]......
I have a really annoying problem. I use GetAsyncKeyState() to determine if a key was pressed or not.Unfortunately, that event fires as long as I hold down a key. Is there any way to check if a Key was released?
View 1 RepliesI have a program that tries to grab keyboard imput using GetAsyncKeyState.On XP 32 bit and win7 32 bit it runs fine but on Windows 7 64bit it doesnt regester any keys being pressed. Any Ideas?
If GetAsyncKeyState(Keys.F12) < 0 Then
If isF12 = False Then
If toggle Then
[code]....
I have looked at many of the tutorials, however, using 64-bit windows vista home premium using those examples, it doesnt seem to work, however, I don't have other computer to test on, is there a good way to do what GetAsyncKeyState does on my system?
View 7 RepliesIf CheckBox_StartHotkey.Checked = True Then
If Not ComboBox_StartHotkey.Text = Nothing Then
Dim StartHotKey As Boolean
StartHotKey = GetAsyncKeyState(ComboBox_StartHotkey.Text)
If StartHotKey = True Then
StartActions()
[Code]...
I am trying to input the function key that a user has selected from a ComboBox (containing the function keys F1~F12 as options) into the GetAsyncKeyState(). However, since the ComboBox_StartHotkey.Text is a string, it cannot be converted into Long data type needed for the GetAsyncKeyState() function. I have tried Conversion and Parse Methods but what I try doesn't seem to work. Anyone know how to effectively convert a String (such as F6) into a Long data type for using in the GetAsyncKeyState() function in this case?
I used the tried to use the ItemData property to hold the Key Code representing the Function Key.
I'm trying to make an app for another application using GetAsyncKeyState.I coded what I thought to be good and clicked "Build". When I opened it, I tested it in notepad. When I hit NumPad2, it should return..[code]
View 3 RepliesWhen I press F7, nothing happens. I got the Virtual Key Codes from here.
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If GetAsyncKeyState(76) Then
MsgBox("")
ElseIf GetAsyncKeyState(77) Then
[code]....
How would I use Select Case with GetAsyncKeyState? Ive tried Select Case GetAsyncKeyState End Select and I get Argument not specified for parameter 'vKey' of 'Declare Ansi Function GetAsyncKeyState Lib "user32"(vKey As Long) As Integer'.
View 2 RepliesPrivate Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
Button1.PerformClick()
[code].....
I'm currently using this
Public Declare Function GetAsyncKeyState Lib "user32" (ByVal vKey As Integer) As Short
Public Function GetKeyState(ByVal Key1 As Integer, Optional ByVal Key2 As Integer = -1, Optional ByVal Key3 As Integer = -1) As Boolean[code].......
But even when I do press control, the message box doesn't pop up.
im trying to make a program that only listens to a few keys that the user presses, and if one of them is pressed, it carries out a specified command.for example, right now,i found a keylogger that could carry out my command, but id rather use something else if possible. right now, i have a timer running this:
For i = 1 To 255
result = 0
result = GetAsyncKeyState(i)[code]....
Then, in the textbox1_textchanged, i search for like if textbox1.text.contains("M") or something.problem with this, is im pretty sure its a keylogger, and i dont want to have to have that. also, it does not work in vista.
Found a solution! (should have researched more throughly!)
Option Strict On
Imports System.Runtime.InteropServices[code].....
Private Declare Function GetAsyncKeyState Lib "user32" Alias "GetAsyncKeyState" (ByVal vKey As System.Windows.Forms.Keys) As Short
[Code]...
Dim starthotkey As Boolean starthotkey = GetAsyncKeyState(Keys.V) My question is... how do i change my hotkey from "V" to ctrl+V?
View 8 RepliesIn your actual programming experience, how did this knowledge of STACK and HEAP actually rescue you in real life? Any story from the trenches? Or is this concept good for filling up programming books and good for theory?
View 6 RepliesWhat I want to know is that in VB.net is it possible to get a stack overflow, and if so how is it caused. What I mean is, what sort of written code would cause a stack to overflow.
View 2 RepliesI need to write a VB.NET code to reverse the given characters using a stack.Input: 'S','T','A','C','K' So far I have input the letters, but I don't know how to get the console to reverse it. I'm a beginner to programming so please excuse my ignorance.
Module Module1
Sub Main()
Dim StackObject As New Stack
[code].....
using the getasynckeystate for ctrl + c and ctrl+ v or copy and paste..How will I do that in this code? For example when i type in notepad it should also do in the richtextbox with this code it work but when it comes to copy and paste word in notepad it does not works and the richtextbox is empty?
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
For i = 1 To 255
result = 0
result = GetAsyncKeyState(i)
[code]....
