I'm working on a program with a fairly complex graphical interface. Due to the volume of information possible in the interface, the tooltip, or something like it, seems likely to be a fairly critical means of obtaining feedback. However, after a bit of testing, there are a few features that I am not really enamored with. First, I am changing the tooltip text dynamically based on the portion of a control that the mouse hovers over. This is done in the Hover event handler. What I am seeing is that once the hover event is raised once for a control, it appears not to be raised for that control again unless the mouse leaves the control and re-enters. Therefore, the tooltip is set based on where the mouse hovers the first time it hovers on the control, then doesn't change until the mouse has left the control.
More disturbingly, the tooltip sometimes doesn't show up at all. It appears that if I am quick enough about moving the mouse over the control, then hovering does nothing and no tooltip shows up at all. The way to get the tooltip to show up is to move the mouse smoothly, and somewhat slowly, over the control, then pause. As long as the motion is slow enough, the tooltip always shows up. However, if the mouse is then moved, the tooltip goes away, and won't return until the mouse has left the control and come back to it. So basically, First, I will look into showing something on MouseMove rather than Hover, as Hover appears to be inconsistent, at best. Yet that doesn't solve the problem that the tooltip is too inconsistent in behavior. Is there an alternative, or timing property settings for the tooltip that improves responsiveness?
I use the following code in a Sub called "updateDb" to accept changes back to the Db, etc. in the .CellEndEdit event from a DataGridView:
Try ' Write changes back to actual .mdb file ' Accept changes from DataGridView object Me.Validate()
[code]....
Which is the most appropriate event to handle for this task? Right now I'm calling the updatedDb sub when the .CellEndEdit event triggers and when the .UserAddedRows event triggers.
I have a DGV that has a hidden column with some text in it. I would like to be able to mouse over any particular row and display the text from that column's field in a tooltip. I thought maybe I could do it in the DGV's MouseHover event, but I did not know how to detect which row the mouse was over. Once I do this, I did not see a .Text property for the tooltip, so how do I set the tooltip's content to be the text from the column field?
How do I make a Tooltip appear when the mouse is hovering over a Picture Box, that says: <Combat Training> When you use an attacking skill you are healed 1% of the damage done.
want my application to trigger audio files when the user clicks a word/sentence in a label, and show a tooltip on mouse hover. I use VB. I tried using TTS (SAPI 3.5), but can not know which language the user's operating system will have. Also, I was advise to use pre-recorded sound wav or mp3. I created the audio files, but am not able to link/connect/call.
The event handlers in my parent class are never called though the events are raised in the child class.
The Code:
Public Class childForm Public Event checkboxchangedEvent(ByVal checkbox1 As Boolean, ByVal checkbox2 As Boolean) Private Sub checkboxchanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged, CheckBox2.CheckedChanged
I've been fiddling with this for ages and can't get it right. If you have this in C#:
videoSource1.NewFrame +=new NewFrameEventHandler(videoSource1_NewFrame); void videoSource1_NewFrame(object sender, NewFrameEventArgs eventArgs) { // stuff to do in here }
How would write it in VB? My head is spinning with AddHandler and AddressOf and I can't seem to get it right.
I have to create controls for inputting info to create people objects in the program, because I don't know how many people they are going to input, I have a button that they can press to add more fields.
I need to add a doubleclick event for these dynamic controls (text boxes), how can I create an event for them if they haven't been created yet. Also, as far as I know you cant make a variable part of an object name while declaring it. I need to do something like
Dim dynamicText & (Append variable counter each time a box is made)As New TextBox dynamicText &variable counter. Name = "TimeTextBox" dynamicText.Text = "SdgsdG" dynamicText.Location = New System.Drawing.Point(100, 100)
[code].....
Also is there a way to like copy and paste a group of controls via code instead of having to code each individual one like if I had to do a text box along with a combo box and a lable all at once, can I throw it into something so I only have to recreate the container?
I am playing around with Drag and Drop, and I am having an issue with AddHandler. I am creating labels and displaying them on a form. Before I add each label to the form, I add 2 event handlers (DragEnter and DragLeave). When I run the code, it hits the first event handler (DragEnter), but doesn't hit the second event handler (DragLeave). Either I have coded something wrong, or the second handler is not being added.
Here is my code (note this is just something Im playing around with for learning):
Public Class Form1 Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
I'm new to VB and trying to add a Key(Down? Press?) Handler to a dynamicly created textbox. The error I get is "'KeyDown' is not an event of 'Object'". How do I fix this?Here are the relevant parts of my
Public Class main Structure square Dim box As TextBox Dim guessedVal As Integer Dim correctVal As Integer
I'm using FileSystemWatcher in an application.it monitors the files in a folder, then do some processing. I monitor FileCreate, Change, Rename, Delete event.the problem is: when I copy some images to that folder, it fired the create event, but the file is not actually ready, so, when I load the file in the event handler, it failed.how can deal with this correctly?
I have many textbox controls and they are named as txt1.text, txt2.text, txt4.txt etc.I want to raise the event "Leave" when txt1.text leaves or txt2.text leaves.but with a single handler.
I am using an activeX control to read data from an external source. This data is processed in 5 second increments. Each piece of data is passed through an event. When the event triggers I call a "decision" procedure from the event to process the data and make decisions on what to do, i.e. call other procedures, store the data, etc... This works fine when I have a small number of samples (around 10), however, when the number of samples increases to say 100, that is I am recieving 100 pieces of data every 5 seconds, the "decision" procedure does not fully run. Is it possible that the event trigger is causing the code to exit the "decision" procedure prematurely? I know that the "Decision" procedure starts since I have written data from the beginning of the procedure but not the end of it. how to handle the rapid event triggers?
I have a datagridview which is populated from the SelectionChangeCommitted event of the combobox. The datagridview contains both bound and unbound data columns (see below).
[code]I get an error that the connection to the IMAP server has disconnected because the suspend event is not triggered until the computer wakes. How do I get the trigger before the computer sleeps?
Pressing Yes will do some action and close the app - works fine, Pressing No will do nothing and close the app - (see below), Pressing Cancel will Do nothing and keep the app open - (see below).
I'm using DialogResult.No for No button and DialogResult.Cancel for cancel button. But pressing either of them triggers DialogResult.Cancel event. Whats the problem?
I am writing a web page, on this web page there is a txtStart and txtEnd. Next to them I have Calendar ImageButtons. I would like to code it so when the ImageButton is clicked a calendar popup appears and when they select a date on the popup it goes away and the date is populated into the txt. Format MM/DD/YYYY. Can anyone help me? I have been looking online for hours now and only find solutions for C# users or for a seperate page all together. I am writing my code in VB and I cannot make new pages. Here is my web page code:
I've been searching for the answer for this all over, but I can't seem to find the solution. I have no idea how do this. A code that triggers an event after multiple command buttons are pressed in a certain order. For example: I press Command1, then Command2, then Command8, then Command5, then an event happens. It's kind of similar to entering a code to activate something.
remove an event handler from within the event handler?
I have a class that gets data from a hand scanner. When the scan is complete and the data is validated, the class fires a custom "ScanComplete" event and returns the data in a custom EventArgs.
In the calling program, I'm creating an instance of the scanning class and adding a handler for the "ScanComplete" event. In the event handler I get the data that was scanned and then remove the handler.
It seems to be working but it feels wrong to remove the handler while I'm running inside the handler. Will this cause a problem?
When I double click on a form control while in the design view in a Web Application project within Visual Studio 2010, say a 'button' or a 'submit' for example, it inserts a javascript function into my .aspx file. When I do this at work it automatically creates an event handler for the control in the code-behind.How do I change this to that setting?I don't want to type those event handler subroutines every time!
The title pretty much precisely asks the question, but I shall repeat;
When I double click on a form control while in the design view in a Web Application project within Visual Studio 2010, say a 'button' or a 'submit' for example, it inserts a javascript function into my .aspx file. When I do this at work it automatically creates an event handler for the control in the code-behind.How do I change this to that setting? I have used '/resetsettings' already, and other answers to similar questions do not solve my problem. I have reinstalled, gone through every menu I can find (though I may have missed something)I don't want to type those event handler subroutines every time!
I have a webbrowser control (in fact, a control inheriting from webbrowser), and added a tooltip control to the main form. Then, I filled the webbrowser tooltip text.But the tooltip never shows. (because the web browsers manage mouse hover with html?)I examined all the events exposed on the webbrowser control, and there is not one about mouse hover.so, the question is: How do I show the tooltip? Should investigate HTML, or there is a .NET control way?
I'm trying to complete this airline reservation application, but having a problem in this part of the question:Creat an event handler for the FlightBindingSource's PositionChanged event: select FlightBindingSource in the class Name combobox then select position changed in method name combobox to creat the FlightBindingSource's PositionChanged event handler. Write a code to access the currently displayed flight object and pass its flightNumber to method DisplayPassengers as a decimal.This Is my code so far:
HTML
Public Class AirlineReservationForm Private database As New ReservationsDataClassesDataContext() Private Sub FillAll()[code].....
