UserControl MouseLeave Event Not Firing On Form?
Apr 16, 2012
I created a little usercontrol that looks similar to Visual Studios toolbox. It works great in the user control project, but when I import it to a form the MouseLeave Event doesn't work. The MouseEnter event works fine however. Any idea why only the MouseLeave event doesnt work? I did notice that I have to use the Panel controls MouseLeave, MouseEnter events for things to work correctly. The Usercontrol Mouseleave and Mouseenter didn't work at all.
Public Class vsStyleToolBox
Public isPinned As Boolean = False
Public isShowing As Boolean = False
[code]....
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Feb 25, 2010
Asp.Net 2.0 framewrok - VB.Net application I have a UserControl containing a Asp.Net DropDownList.
Things already researched and or tried:
The control gets bound to data on page load inside if not Page.IsPostBack (only loads once) ID proprety is set for control (ID = ddlMyControl) AutoPostBack is set to true EnableViewState on the control is set to true AutoEventWireUp in the UserControl declaration is set to true EnableEventValidation is set to false in the parent page
The control will not fire it's SelectedIndexChanged event no matter what I do.
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Feb 12, 2012
Well the title pretty well describes my problem. Here is a little bit more detailed description of my problem: I am building an application with a TabControl, which I populate at execution time with TabPages. In my first version of the code, these TabPages were filled with a children ListView. The ListView was also created in code, using AddHandlers to link it to the DragEnter and DragDrop routines. Everything worked very well... Now as I need some other controls on every TabPage, instead of creating every single control in code, I have created a UserControl containing a ListView and a few Buttons, which I instantiate for every new TabPage. The problem now is that the DragDrop event is not raised anymore
[Code]...
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Mar 22, 2009
I have a userControl (.NET 1.1 Winforms) that has a clickable picturebox as a button.Since I have lots of those usercontrols visible at the same time, I thought It could be nice if I just display the picture box when the mouse is over the usercontrol and hide it otherwise.To do so, I handle the MouseEnter and MouseLeave events of the UserControl, hiding and displaying the picturebox. That works fine.But when the clickable picturebox is visible I'm not longer able to click it (the hand cursor is gone and the click event is not firing).After some test, I realize that if comment all content on the MouseLeave handler that do something with my picturebox... this way the picturebox is clickable.I'm not using the correct event?
Here is the code...
Private Sub NodoEstablo_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.pictAdd.Visible = False
End Sub
[code]....
Update:If I resize the picturebox on MouseLeave (just to do something) it works.So far, changing Visible and Location in the MouseLeave prevent me for click the picturebox.
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Feb 18, 2011
When i use my UserControl in a project my Mouse Enter & Leave events aren't firing, i assume i fix this with a raiseevents in my usercontrol. However when i try to do this it says something about "cannot raise base event from derived class".
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Mar 30, 2012
I need a 'low-coded' way on how to use 'MouseEnter' and 'MouseLeave' event (in Visual Basic 2010) on a Web Browser, but strictly as OBJECT. So I don't need any of those HTML stuff... I just want one small Web Browser to dissapear when I take my mouse off him...
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Oct 8, 2009
Is it possible to detect a mouse leave to the left. For example: I have a label and when I hover over it the text changes to "Hovering", and when I leave the label from the left I want the text to change to "Exit left" or if I leave the label from the right that text changes to "Exit right".
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Jul 22, 2011
I am using VB.Net for my Windows application. I will open two child form from MDI. Both forms will open. Now if I will go from form1 to form2 then Activate event for form2 will not fire.
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Nov 9, 2010
I fear that there is something obviously wrong with my code, but I have come across a situation where the Form.Load event is not firing when I create and show my form. The form is not subclassed (as I've seen some problems with that in some searches), and I am not getting any errors thrown when I step through the code in the debugger.
I have a break point set on the IDE-created form load function (which does have the Handles MyBase.Load signature suffix) but the breakpoint is never reached and the form does display and work.The form is passed three arguments in the constructor but the IntializeComponent() function is called before anything else is done.
[Code]...
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Sep 7, 2009
My form load event is not running. How do I track down the coulpret?davidbell
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Sep 3, 2009
I have the following code for a gradient form below. When I step through my code it seems to fire constantly. Does this mean that it fires constantly at run-time? If so, is there a way to stop it from firing constantly
Private Sub Form1_Paint(ByVal sender As System.Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint
Dim Mybrush As New System.Drawing.Drawing2D.LinearGradientBrush(Me.ClientRectangle, Color.LightSkyBlue, _
Color.Snow, Drawing2D.LinearGradientMode.Vertical)
e.Graphics.FillRectangle(Mybrush, Me.ClientRectangle)
End Sub
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Jun 29, 2010
Sub FrmConfigurationLoad(ByVal sender As Object, ByVal e As EventArgs)
msgbox("TEST")
'load the config data from xml
'Dim doc As New XmlDocument
[code]....
The form loads and nothing happens?
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Sep 10, 2010
I have a login form that when the user clicks OK and logs in successfully it loads the main application form.However when I show the main form and close the login form, the app is firing the shutdown event.Is this because the app thinks that the login form is the only form open and thus fires the shutdown event?Here is the code for the login routine, when I call Me.Close() at the end is when the shutdown event is fired. Am I doing things out of order? I used to do it this way in VB6 with no problems (I know they're a lot different).Note, it's nothing in frmMain either, this happens no matter what form I try to open.
Private Sub btnOK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOK.Click
'iLoginResult = 0 : Success
' 1 : Invalid user name or password
' 2 : Other login error
[code]....
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Dec 20, 2011
I have a VB (.NET3.5) project like this:
- form1: IsMDIForm = true.
- form2: adding a list view with 2 records, select first record, and register the event ItemSelectionChanged.
- Add form2 as a child of form1 (form2.MDIParent = form1).
- When use "form2.Show()" -> the event ItemSelectionChanged firing three time:
+ 1st: SelectedItem = 1
+ 2nd: SelectedItem = 0
+ 3rd: SelectedItem = 1
I want to know the rootcause (not Solution) of thi issue, can anyone help me !?
Project code: http://www.mediafire.com/?hhhdzh5te1wrod4
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May 17, 2011
.net 4.0, ASP.net, vb.net. I've got a usercontrol that is using an obout combo box. The obout is a cascading combobox that has 3 levels to it. when something it selected from the third level of the combobox, it is suppose to fire off a selectedIndexChanged event. This happens the first time that I select the usercontrol. The problem is if i want to go back and select something different. The selectedIndexChanged doesn't fire. I've set breakpoints and the AddHandler ComboBox3.SelectedIndexChanged, AddressOf ComboBox3_SelectedIndexChanged
runs just like it did the first time i select the usercontrol. But the selectedIndex just doesn't fire the second go around. Was wondering what i'm doing wrong. Here is the selectedIndexChanged that is not firing
[Code]...
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Nov 28, 2011
I've recently run into an unexplainable issue regarding a windows form application I am working on. I've managed to isolate the issue to a single line of code whereby a single TabPage is removed from a TabControl, leaving no tabs left in the TabControl's collection. What happens next is a bit mystifying: my application proceeds to enter a state in which the main form's Activate event is fired subsequently followed by its Deactivate event. As a result, no matter where I click on the form, the application will activate for a split-second then immediately deactivate itself, thereby causing me to be unable to interact with any other GUI controls on the form. I thought maybe another thread is trying to interact with the deleted tab object, but the tab is created and destroyed on the same main gui thread. Does anyone have any insight that may point me in at least a new direction? Stepping through the debugger to the point in code where the tab is removed does not cause any exception to get thrown, so at first glance there doesn't appear to be any coding issues going on (although I would not be surprised that is actually the case!).
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Feb 14, 2010
setting the form opacity programatically in the MouseEnter and MouseLeave events.The problem isn't with the actual events, the problem is that the events occur in places where I don't want it to happen.So in my project, I have a form with 3 user controls in it. The user controls are docked in the form so no actual space from the form is available to the user.
I have the methods:
Form1_MouseEnter(~) Handles Form1.MouseEnter, UserControl1.MouseEnter, UserControl2.MouseEnter, UserControl3.MouseEnter
Form1_MouseLeave(~) Handles Form1.MouseLeave, UserControl1.MouseLeave, UserControl2.MouseLeave, UserControl3.MouseLeave
when you enter the form, the form opacity is set to 1. And when left, the form opacity is set to 0.7 .However, what happens right now is obviously that when the user changes the mouse position from one user control to another, the form opacity flickers (turns to 0.7 and back to 1 really fast).
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Aug 9, 2011
I am trying to put an extra event in, UpdateID and it's not firing.
[Code]...
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Jan 5, 2011
The code is listed below which hopefully illustrates what I'm trying to do:[code]....
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Feb 18, 2012
I have a main form that has a dynamically generated treeview and also a panel control. Depending on the selection made within the treeview the panel docks 1 of three diffrent usercontrols which are full sub forms(done for ease of modifing design of sub form rather than layering panels on top of panels).Upon button click withing usercontrol i wish to trigger event within main form.For example delete button wich then triggers to remove current selected node from treeview. code for 1 of three diffrent user controls
Dim ctrlQ As New QuoteUC(TrViewQuotation.SelectedNode)
PnlSubFormDock1.Controls.Add(ctrlQ)
Code for delete button for which i need to raise event.
If MsgBox("Are you sure you wish to delete this customer ?", vbYesNo, "Delete Record") = vbYes Then
Deletecustomer(n)
End If
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Jul 11, 2011
I have a Windows Form that contains a custom control container as a UserControl. For the sake of this question, this custom control container is called Dashboard. This container called Dashboard contains numerous other controls depending on their permissions. I need to raise events that are contained on these controls through the Dashboard control and over to the Windows Form.
How can I bubble up the event? I'm using VB.NET for this project, but can convert C# into VB.NET.Also, to complicate matters, the main Windows Form is a VB6 project. So, I'm using the InteropFormsToolkit to accomplish this.
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May 25, 2010
I am using a monthcalendar inside of a panel. when the user changes the "showweeknumbers" of the calendar I need to move some label to the right of the calendar, but I also need to resize the panel. The problem comes into play when the user hides the weeknumbers, the monthcalendar resize event fires and the labels move, but the panel resize causes the month calendar to fire the resize event again, making the labels all out of wack...
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Apr 1, 2012
I've been looking for a solution to this for several hours now and cannot find a solution.
The Scenario:I have a masterpage baseclass (called basemaster)All of my master pages inherit from basemaster
basemaster defines an event 'Public Event HandleClickEvent As EventHandler'I have a masterpage named master1
master1 defines an event handler 'Public Shadows Event HandleClickEvent As EventHandler'master1 has a user control named usr1 usr1 has a button that raises event ButtonClicked when clicked I have a page (thePage) that uses master1 thePage has a button click event handler that it registers like so: 'AddHandler Master.HandleClickEvent, AddressOf HandleTheClick' master1 has code something like:
Protected Sub Usr1_ButtonClicked(ByVal sender As Object, ByVal e As System.EventArgs) Handles Usr1.ButtonClicked RaiseEvent HandleClickEvent(sender, e) End Sub when thePage loads I see it register the handler on master1 when the button is clicked, Usr1_ButtonClicked is fired and I step through the RaiseEvent but HandleClickEvent on thePage is never reached.
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Jun 9, 2011
i have a page which dynanically create a link when it load, after i click on the link it should loop in the database fetch all the record and display another set of link , then when i click on these link it should give me all information about this particular record it like this one
Q: when the page loads, it creates the first link which is associated with an event handler, it fire the first event handler (Getname) but it not firing the second event handler (GetnameDetails)
Protected Sub Page_Init(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Init
If ViewState.Item("nameload") IsNot Nothing Then
If ViewState.Item("nameload").ToString = "True" Then
[Code]....
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Jul 1, 2011
The following code was working the other day. Now it isn't. When I type a character in the textbox the event doesn't fire.
[Code]...
why the event would just stop firing?
I'm trying to make it so this the cursor will jump to the next textbox after the user enters 1 character.
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Sep 21, 2009
OS: MS Server 2003
Visual studio 2005
I had a button on a page that worked at one time and all of a sudden stopped working.
[code]...
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Jun 5, 2009
[url]...and have applied the vb code. The problem I have is that the user doesn't navigate within the datagridview. They click a save button on a toolstrip. As the user doesn't move from the current cell then the cellvalidating event doenst get fired. [code]...
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Apr 28, 2009
My ie.documentcomplete is not firing from my installer but it works fine from my source.I don't know where i m going wrongmy working environment
For Each Me.ie In New ShellWindows
If GetForegroundWindow = ie.HWND Then
AddHandler ie.DocumentComplete, AddressOf _
[code].....
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Aug 26, 2011
We're trying to design a toolbar to use as an addon in another program. we want to set one of the buttons so that when u single click it, the image on the screen is blanked out. And when you double click the same button, it blanks everything except the selected image. However the DoubleClick event doesnt seem to be working at all.
[code]...
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Nov 21, 2011
I have two forms that I worked on separately, each has an event load button that works with a datagridview without any problem. but when I created a third form and moved the buttons on it and try to update the datagridviews on the two forms, it doesn't fire up here's my
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code]...
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