Handle Key Events In Background
Apr 17, 2009I need an application in background that handles key events in other applications. Really i only need to know if user press F7 key, and after call some functions. I try with
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Have Background Thread Handle Events?
Apr 7, 2011I am in the planning stages for developing a VB.Net class (let's call it OpDAq) that is to obtain data via an API provided by a COM object (AxInterop.TWSLib) that makes requests to an Internet server. The API provides data via events. Class OpDAq should do its work on a separate thread; it takes several seconds (sometimes up to ~10) to collect the desired data. One should be able to create several instances of OpDAq in order to collect data in parallel. The class would be given a reference to the TWSLib object when its constructor is called, as well as several parameters. There needs to be a way for the class to provide results, preferably in the form of a generic list.
View 6 Replies.net - Handle ALL Events In One Handler?
Jul 19, 2010Is it possible in VB.NET to easily write an event handler that will handle every event that fires? I'm wondering if one could make a logging system using something like this.I'm wanting to do something like (in pseudocode):
Public Sub eventHandledEvent(ByVal sender As Object, ByVal e As EventArgs)
File.Write(sender.EventName)
End Sub
I realize it would be slow, but it wouldn't be for a production system, only as a development tool.
Handle Events In Another Class
Sep 2, 2011I'm trying to move some code into some class files to clean up my code. One area I'm having trouble with is reporting progress for events between the object performing the task and a progress bar. I guess the event functions have to be placed in the new class but they also need to update the progress bar on the calling form? Can the classobject return updates in place of the event handlers?
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Vb6 Handle .net Com Class Events?
Nov 13, 2009i have the ComClassSearchCustomers class and interface IComClassSearchCustomersat .net which used to create a tlb file. The class raise an event inside new. After that i have a vb6 form Form1 which catch the event , but it never see the event.
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Window Handle Changes Between Events
Aug 1, 2011I have the below code. When I execute this code, the handle is different between the Load event and the Shown event. I thought the handle was static for an instance of a window. What could cause the handle to change? The only other thing the form is doing is setting itself to invisible and setting the ShowInTaskbar = False in the Activated event.
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Events - How To Handle Multiple Textboxes
Aug 9, 2010I have multiple textboxes which I want them to perform the same thing upon clicking them. By default I can use the handles textbox1.click for 1 single textbox but I am not sure how to do handle multiples of them. Of course I can write a handler for every single textbox but I have about 50.
Sub TextBox1_click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.Click
If Button9.Text = "Make Changes" Then
If TextBox2.Text <> "" Then
Frm_Cine1.Show()
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Handle All Keypress Events Within A Single Sub?
Dec 17, 2010From within the same form is this possible? I could eliminate a ton of code if this were possible.
View 8 RepliesIDE :: Handle The Events For This Type Of Objects?
Jan 15, 2009I created a Class which inherits Combobox and the listview is added . Now what I need is once the user click listview, the listview has to close and the clicked item has to added with combobox text. simply can say combobox1.text = listview.item(0).textFor closing & displaying the listview I need to handle the events. For
My Codings :========Public Class Combu_lstviewInherits ComboBoxPrivate treeViewHost As ToolStripControlHostPrivate Shadows dropdown As ToolStripDropDownPublic mylistview As New ListView
Public Sub New()mylistview.BorderStyle = BorderStyle.Nonemylistview.View = View.Detailsmylistview.HeaderStyle =
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VS 2005 - How Many Events Can Routine Handle
Apr 21, 2010Is there any limit to the no. of handles assigned to an routine. Well actually my form form has about 80 controls and when ever the user press the enter key, focus must be to the next control. so can I handle all the 80 keydown events in one routine, or is there an better way.
View 3 RepliesASP.net: Handle Events From Dynamically Added Controls?
Jun 22, 2009I have a number of user control dynamically added to a page, and user interaction with these dynamically added user controls need to be handled by the control's parent. Is this what is referred to as "event bubbling"?How do I do that in VB?
View 3 RepliesC# - Handle Events Of Members From Another Class / Instance?
Jul 14, 2010I am attempting to share a sub menu among several different parts of an application so that it is consistent (not wanting to copy/paste.) I thought it would be simple. I am doing something like this:
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Handle Events For Objects NOT Created In The Design Tab?
Jan 10, 2012I have created a PictureBox array to hold 104 playing cards that are all visible at the same time.I did this with this line in the declarations:Shared Card(104) As PictureBox
And with these lines in the Form_Load module:
For I% = 1 To 104
Card(I%) = New PictureBox
Card(I%).Name = String.Format("Card{0}", I%.ToString)
Card(I%).Size = New Size(71, 96)
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I have been successful in creating the array, positioning each and entering the images for all 104 PictureBoxes, but now I want to add code for the event "MouseDown.I copied the code for this event from my VB3 program and VB10 automatically updated the list of parameters, but nothing has linked the objects (Card) to the code.
I have tried to append "Handles Card.MouseDown" as well as several variations with brackets to indicate that it is an array.Auto-complete doesn't include "Card" as an option, and of course, since the array was never an object added to the form design, I can't create the empty module from there.
Handle Events Of A Control In A Class File?
Feb 22, 2010if I wanted the button onclick event in a different class how would I declare it?
when I refer back to the form it says I need to declare with events..
Private Sub btnAddToLaneFilter_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Dispatch.btnAddToLaneFilter.Click
If Me.txtCriteria.Text = "" Then
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Handle Events That Are Thrown By Internet Explorer 8?
Sep 7, 2010I need to handle events that are thrown by Internet Explorer 8. I am able to handle events associated with the first tab that is created when IE8 launches, but I am unable to handle events if the user creates a new tab or opens a new window. I need to handle events of all tabs (and preferably all new windows as well) that are created by the instance of IE8 that is launched by my application.
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Handle The Events Of Serial Input Buffer?
Apr 24, 2010I want to handle the events of my serial input buffer. I've seen the following article:
[URL]
My programming skills are not really that great so I've got a question:How can I trigger a sub (for example: ArduinoSerialInput) as soon as this event is handled?
Code:
Public Delegate Sub SerialDataReceivedEventHandler(ByVal sender As Object, ByVal e As SerialDataReceivedEventArgs)
Dim SerialBufferIn As SerialDataReceivedEventHandler = AddressOf ArduinoSerialInput
Public Sub ArduinoSerialInput()
MsgBox("test")
End Sub
I use a piece of hardware to send data to my COM port, but nothing happens.
VS 2010 Form Unable To Handle Other Events?
Apr 7, 2011I'm trying to use a asynchronous UDP-Port to recieve data on a form.I manage to receive one message at a time(for each click of btnReadData), however if I do this receive in a loop (in order to continously receive new messages), my form seems to be locked.What am I doing wrong?
Public Class FPR2DIS
Delegate Sub dDataReceived(ByVal Data As String)
Dim UDPWorker As New Worker
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Graphic Programming - Handle Different Events By Clicking On Different Zones?
Jan 30, 2012I want to create an object like the shape which is shown in the below picture. This picture is divided into different zones. I want to know how can I handle different events by clicking on different zones. For instance when the user click on zone 1 something is activated and when the user click on zone 2 another event is called.
View 5 RepliesHandle Click- Events Of Dynamically Generated Buttons?
Sep 20, 2010Am on creation of touch screen UI system.And am generating button for selecting products
Under certain category.
--> array of button creating dynamically And placing in TABPAGE when user selects Tab for category. The button will be created with the name of products, Under the category selected.
{
'the way am creating controls.
mybutton(j) = new button()
mybutton(j).top = 100
}
How can i get the Click event of those buttons-( in the array)....??
Handle Events On The Dynamically Loaded User Control?
Jun 20, 2011I have the user control that is loaded dynamically. When the user save the data by clicking on the Save button, a raise event is passed.
Public Sub RaiseCloseEvent(ByVal sender As Object, ByVal e As System.EventArgs)
RaiseEvent Close(sender, e)
Debug.Print(String.Format("The control {{0}} was closed by {{1}}.", Me.Name, sender.ToString))
End Sub
In the save button I have called the RaiseCloseEvent as follows:
RaiseCloseEvent(sender, e)
Now, how can I close the user control form? Any Idea? I have used VB.Net language.
Object Handle Events Fired In Other Objects Without A Special Sub?
Jul 28, 2010I've been thinking about my options when it comes to events in vb.net.What I'd like to do is to track events that are fired in an application without explicitly declaring them with 'handles' sub. Here is a pseudo-[code]....
Yeah I know, not quite working, but is there any way of implementing something like this in vb.net? My end game is really to be able to monitor events fired in many objects from another object, isn't there a more maintainable way to do that then to add a special sub in each object that handles the event that I want to catch? I need some way to let one object handle events fired in other objects without a special sub, the AddHandler goes a long way, but I can't really use that dynamically like so:[code]....
Pass A Handle In A .NET Form To C For It To Draw On/get Click Events?
Jul 20, 2009I am trying to put a new face on an old C program. The C program is, of course, unmanaged code, designed smartly to separate the number crunching and the interface, and the interface I'm trying to replace is X windowing. The graphics part is where it gets a little hairy, because the C is going to need to continue to draw in my new interface, based on the data the program produces. Even if I want to duplicate that data in .NET so that the .NET side can handle all of the drawing, the fact remains I'm going to need to operate on the graphics window in some fashion from C.
I gather that handles have a lot to do with the bare Win32 graphic operations. Is such a similar handle provided to, say, a PictureBox element in .NET? And if so, is it the kind of handle I can use in the unmanaged code without an issue?
I have tried and tried and tried to google for the solution for weeks now, and all I come up with are either C++ solutions (using object-oriented GDI+) or some sort of extension to the C language.
Alternatively, is there a way I can have .NET create a handle specifically for this purpose of having C draw it?
To sum it up, I am using Visual Basic .NET 2008 and a C DLL (also compiled in VS2008), so far in the little testing I've done, I've been able to marshal complex structures to and fro, but I am not sure how exactly I'd let C do any drawing on the .NET form, if that was even possible.
Unable To Handle Events When Adding Control At Runtime
Mar 11, 2011I am in need of adding arr of type label at run-time. I am making a program which will retrieve employee name from database in different label. On clicking each employee name (label) it will display all the information about that employee in a msgbox. I use the following code to create the label. Since the number of labels is not fixed I have used an array.
dim withevents lblArr() as Label 'declared in the class
In the subroutine(Form load):
for i as integer=0 to NoofEmployee-1
redim lblArr(NoofEmployee-1)
lblArr(i)=new Label
' I assigned all the necessary property like size location etc..
me.controls.add(lblArr(i))
next
I declared another subroutine:
private sub MyClick(sender as Object,e as EventArgs) **handles lblArr(0).click**
MsgBox("Hello")
end sub
The code doesn't compile since a subroutine doesn't.
VS 2008 Handle Events Of Serial Input Buffer
Apr 25, 2010I want to handle the events of my serial input buffer. [code] My programming skills are not really that great so I've got a question:How can I trigger a sub (for example: ArduinoSerialInput) as soon as this event is handled? I've tried some code but without success, that's why I decided to post on the forum [code] I use a piece of hardware to send data to my COM port, but nothing happens.
View 7 RepliesHandle Events And Notifications From Multiple Sources To A Main Form In .net?
Sep 23, 2011I have a vb.net application in which there is a main form. There are around 10 classes each having their own functionalities like tcpactions, fileactions, serialport actions etc. The user interacts with the main form and does certain actions which will invoke the methods in these classes. Now I have a notifications textarea in the mainform and i want to show the current action being performed in those classes and their results in the notifications area.
for example when a user clicks a "Start Process" Button in the form i invoke the method "launchprocess" in a class "ProcessActions". Now this method tries to launch about 7 different process and after launching it sends notification such as "process 1 launched" or if it fails it sends notifications such as "process 1 launch failed".
I currently use event handlers and use them to show notifications but with the amount of events i have to handle it is getting cumbersome and i might have to add even more classes in the future. So is there a better way of handling notifications from other classes.
Handle Events From The Main Form In A Separate Class Or Module?
Feb 24, 2012I've been searching for the answer for a while but can't find it yet. Basically so far I have a simple VB.Net form with one button.I would like to make a class or module that can handle events from the main form. This is my code so far but it doesn't seem to work.
View 6 RepliesOne Routine To Handle Multiple Events In Arraylist Class Object
Oct 17, 2011I want to use One routine to handle multiple events & i want to give the list class object to the routine handle clause in vb.net. Is it possible? I have 100 buttons on my web page & i want to handle click event of each button. I have same coding on each button but the only difference is that, which button is calling the event handling routine. So i want to make one sub routine for handling event of all my buttons.
I can solve this by writing each button name in the handles clause like - Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ImgRCP_26.Click, ImgRCP_27.Click,. But it is so lengthy procedure. So that why i want to handle my button in the arraylist. How to do this?
VS 2008 Call Procedure To Handle All Control.click Events?
Jul 27, 2009I am trying to make a routine that will be called everytime the mouse button is clicked. I want it to be called so that the controls event that the mouse is clicked on is triggered.
For example:
You have a button control on your form. Instead of having the Button1_click event
You have a Control_click event. And that Control_Click event will be used for each control on the form.
Change Event Background Colour For Specific Events In FullCalendar JQuery SQL ASP.NET VB Version?
Feb 4, 2011I have successfully converted the FullCalendar into asp.net / VB and it works perfectly. I am struggling to change the background colour of an event based on a SQL query. I have tried many of the links on StackOverflow and on the Full Calendar Docs [URL] but I have barely any knowledge of jQuery/Javascript so this is proving very difficult for me.I have 5 Employees and I would like each of them to have a unique colour on the Calendar. In my SQL table there is a SalesPersonID field for each employee. I want to change the colour based on the ID. e.g.: (I know this will not work in this scenario, it is purely for info)
If "SalesPersonID" = "1" Then
cevent.className = "Steve"
ElseIf "SalesPersonID" = "2" Then
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Asp.net - Handle Master Page Button Click Events In The Content Page?
Jul 2, 2011I have master page in ASP.NET. I have added two asp controls to master page i.e. _EmpDROPDOWN and _findBUTTON.I have one content page. FindEmployee.aspx which shows result list of employees (Gridview) based on the selection made in _EmpDROPDOWN when _FindBUTTON is clicked on Master Page.I dont know how to read Master Page button click evenet in Content page.How to read master page button click event (VB.NET syntax) in Content Page?
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