.net - Limiting The Mouse To A Form Without The Ability To Override?
Dec 29, 2009
So I am trying to make a program where the user is limited in moving the mouse to a form. I still want the user to see whats going on behind the form but not be able to click on anything but my form.
I tried using this
Cursor.Clip = Me.RectangleToScreen(Me.ClientRectangle)
The problem is that if the user clicks in certain spots on the titlebar...the mouse is unlocked. The machines this is going on has a ball type of mouse so if you scroll fast and click fast enough...it can also unlock.
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Dec 14, 2011
i got a program that has clients send self typed messages via gmail and i want to be able to limit everyones use of this so they dont try to spam me, i want to make it so they can only send 1 from their computer every 12 hours how would i do this?
also i would like to make sure that one of the boxes they fill in has indeed been filled in with at least 20 characters before they can click the send button, hoping this would prevent ppl from sending blank messages
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Jan 15, 2011
I'm a really beginner so i want to know if its possible to make the mouse move to certain co-ordinates outside of your form and then click , and then pause before repeating.
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Sep 9, 2009
It seems like I can't set the id or name of the form in my masterpage. [it's always "aspnetForm"]
Is there a way to override the uniqueID property of form?
I tried to create a class and inherit from htmlform, but then i can't register it on my mastrepage, [unknown server tag ... ]
im registering it like this
<%@ Register TagPrefix="cf" Namespace="Framework.BaseForm" %>
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Jun 1, 2011
I have this code that's suppose to override the form closing event, It fires off sucessfully however doesn't prevent the form from closing.
Private Sub Form_Close(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing
Me.Hide()
e.Cancel = True
End Sub
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Feb 1, 2009
I am new to VB.NET, Now i'm working with Events in VB.NET, I have two event methods, Mouse Click and Mouse Down for a single button in a form, I have displyed a message in each of these methods but only mouse down event is triggered. Why Mouse Click is not triggered? Similiarly I Did the same for Mouse Enter and Mouse Move for a particular button, in this case both the events are triggered.
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Nov 5, 2009
how to raise the mouse leave and mouse hover events for VB when i place my mouse cursor over the button.
When my mouse cursor is over the buttons, it will raise the mouse hover event and open the form, then when the mouse leaves the button, it will close the form upon raising the mouse leave event.
but currently, When i excute this two events, the for will open and close very,very fast. so fast that it is like spamming the VB.
So i am wondering how to change the code that i have to excecute the event one time every time the mouse is over the button which is created at run time.
the codes to execute these two events are:
Private Sub Button_MouseLeave(ByVal sender As System.Object, ByVal e As System.EventArgs)
For Each ctl As Control In PictureBox1.Controls
[Code].....
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Nov 12, 2009
[URL] I have tried heslacher's method which is Hi clzanas, you problems had been the result of calling a for each loop inside the events. If you only want for the button you hoover / leave to call the ShowDetails.Open/close, then you can take the code below:
Private Sub Button_MouseLeave(ByVal sender As System.Object, ByVal e As System.EventArgs)
If TypeOf sender Is Button Then
ShowDetails.Close()
[code]....
But i got the same results as my previous code, resulting in the form opening and closing so fast that it is like spamming the window.
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Sep 8, 2009
I have to two forms. Form one has several check boxes and when a button is pressed, a second form is opened and certain functions are ran based on which check boxes are selected.The problem is that the second form doesn't show until all of the functions are done.I decided to use the Form's Activated event, which works fine. However, the event fires every time the form comes into focus.Is there anyway to override the event and make it only fire once?
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Aug 26, 2011
Im Using VB 2008. I have MsgBox() statements in all Mouse & Form Click events to TEST & NOTHING FIRES during Form Load when I click on Form or Button Controls !!! The Form Load event contains code for Displaying the Label.Text control many times with changes in the Text to simmulate annimation.
[Code]...
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Mar 31, 2010
I need to add .bin and .iso ability's into my app, i need to be able to open a .bin or .iso and list the files contained inside of it, ive found a small source code/class and example for the .iso one, but i need .bin adding to it to.
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Dec 7, 2010
I am using Visual Studio 2010 and SQL Server 2008. I made one preject using Employee table and Employee_Permission Options(Yes/No/Override/Never). I want to both table in form detail view most using combo box. if I used Employee detail view and Employee_Permission Datagridview than its work fine to add/edit/update but if table Employee_permission I used detailview (all Combobox) than I can not add/edit/update records. I can add only employee but can not add record in employee_pemission. I have relationship with two table EmpID in both table Primery key with auto increase in Employee table.
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Jun 6, 2011
So i have several tabs, and i close them all using a button with:
TabControl1.Controls.Remove(TabControl1.SelectedTab)
But I have been trying to figure out how to make sure the main tab doesnt close.What can i do to make sure the main tab can't shut down, when closing tabs with the above code?
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Nov 26, 2011
I want to make a program that can play MP3-files from my FTP-server.I know how to play, pause and stop music from stream, but i don't know how to add seek-ability.You know, like in Spotify or Grooveshark, they play streamed audio with seek.so, i would like to be able to seek, and the trackbar would show where in the song you currently are.So, my questions are:
1.What codec should i use? I have NAudio, will that work?
2.Is there any examples or tutorials on how to do this, any at all? (i couldn't find any)
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Jun 3, 2010
I have a need to add the ability to receive SNMP traps into one of my server apps (written in VB 2005). I have setup a UDP listener on port 162 (SNMP trap port) and can successfully get the trap message in a byte array no probs.
The problem is that I have no idea how to make a meaningfull message from this byte array. Does anyone have any pointers / code to either translate into a meaningfull message stream or a better way of adding this type of functionality (without adding 3rd party dll's etc).
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Aug 7, 2011
When it comes to Backgroundworker's, I just make a total mess, even after reading over and over again the Backgroundworker component info on the msdn site... I have a code I would like to run on the form but if I do it with a simple "Public Sub" it will make the form lag, freeze, until the operation is done. So I try to paste the same code into a backgroundworker, and use Runworkerasync, but I get errors stating that the backgroundworker can't access controls on the form.
[Code]...
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Mar 5, 2009
I would like to block the ability to open the same project twice.Like in VB6... you could not open the same vbp again.
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Feb 23, 2009
I have a system on my webbrowser that allows the user to choose their Search Engine out of a selection I organized. the down point is that I have it set so when they click save it will just hide, because if it closes the settings will be reset and not saved. However I want them to save. Here are my codes to the search button:
Private Sub Search_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Search.Click
If SearchEngines.RadioButton1.Checked Then
CType(TabControl1.SelectedTab.Controls.Item(0), WebBrowser).Navigate("http:www.google.com/search?hl=en&q=" & SearchBar.Text & "&btnG=Google+Search&meta=")
[code]....
This is the code of save:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Me.Hide()
End Sub
I would like it so it saves when the whole program is closed, so when they start up it's automatically set so they can search on their favourite search engine.
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Mar 14, 2012
i want to give the ability for a user to drag an area on the screen that they want and a that area to be print screened. or alternativly they click anywhere and that location is the top left of the box and then when they next click that location is the bottom right of the box and that box is print screened. [code]
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May 9, 2011
if there was a way to emulate the application.settings file's ability to do something like the following:
If I add an item to the settings file editor say Variable1 with a a value of "foo"
I can then go to my.settings.default. (and at this point) Variable1 is item that is an option after I type the '.'
Is there a way to do this for a collection? To where I have
Collection1. (and when I press '.' the name of an item would show up?)
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Dec 10, 2011
I want to make a server app, that can stream a movie (within my LAN)I've searched google, but can't find anything that will allow me to stream a .avi file and fast-forward (seek in the stream?) ability.
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Apr 15, 2012
I have two custom action listers. One that handles Mouse.Click and one that handles Mouse.MouseDown. My question to you is, can I delay the mouse down event so that it does not intefere with the code of the Mouse.Click event? I have tried adding a timer and waiting x amount then setting a bool value to true, but the code executes to fast and it skips the other code.
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Nov 12, 2009
Using the code below:
Private Sub ShowDropDown()
Using f As New DropDownForm
f.Visible = True
Do While f.Visible
Application.DoEvents()
[Code]...
This was a guess, after looking at the Form.ShowDialog method in reflector.My question is, is there a managed call I can make to acheive the same result, and what does a button click do that other clicks don't?
ETA: The problem does not occur if I open the form using a key.
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Apr 20, 2009
making a form slide in and out from the edge when the mouse is over the form 'tab'?would it be the mousehover event ?And I've tried using the animatewindow api but not getting too far !
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Sep 3, 2009
Is there a way to disable the user's ability to edit the text in the combo-box, so that they can ONLY choose from the options in the drop-down list?
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Sep 1, 2010
I would like to have the ability to watch my IP camera view via Visual Basic 2010 and VLC plugin.My camera works as a Web Server and it has a 'User Name' and a 'Password' in order to be accessed.I use the code below:
vlc1.addtarget("rtsp:ipofcamera:554mpeg4/media.amp",Nullable,AxVLC.VLCPlayListMode.VLCPlayListInsert,0)
vlc1.play()
And nothing happens.If I replase the "rtsp" with a file path and name to our Hard Disk,the video works fine.How can I use RTSP?How can I store the UserName and Password for my Camera in VB source code?
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Sep 23, 2009
i am making a virtual os with the ability to open up a calendar and add appointments on it i created to setting as strings to save the text put into the text boxes it saves them and opens them up but it will open the form and show the appointment but it shows the same appointment on whatever date you click on. also i need help on deleting a appointment here is the code:
[Code]...
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Dec 8, 2011
I have a simple query that fills a datatable from an Access DB. There are about 1.7 million records returned, so I would expect it to take a little time. At first, the query was a very simple one, and it took a couple seconds to fill the datatable. However, I really wanted the ability to restrict the rows by a certain date field, which meant a single INNER JOIN to a different table. Having written this, I verified that it was correct by copying the SQL string into the query builder in Access. The query, in Access, took a couple seconds to complete. That was comparable to the time I was seeing before I added in the join.
However, in VB, the query isn't completing at all. After 60 seconds, I get a message about a ContextSwitchDeadlock stating that it hadn't been able to transition or pump messages in a long time. Frankly, since the exact code works fine when I remove the JOIN, this seems like it is either a deadlock internal to the Jet engine, or the error message is an artifact of a very long running query. My question is why a query (albeit a large one) is hanging in the VB program when the exact SQL runs in a couple seconds in the Access query designer, and when I remove the JOIN, the query runs in a couple seconds in VB?
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Feb 12, 2010
I write in-house software for a company. I always want to leverage OOP techniques as best as I can. In this thinking, I want to create a Data Access Layer (DAL) isolated in its own .DLL. What can I do to limit the access of the DAL DLL to only my business logic layer DLL? The last thing I need is someone in the company with a little programming knowledge plus access to the system (via Active Directory) to install .NET Express, reference my .DLL, and start firing off data access code outside of the real system. Are there any .NET mechanisms I can employ to limit a DLL to be used only by a pre-selected host application/DLL?
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Jan 30, 2011
My application allows the user to enter text into a RTB including all the various text font, size, etc changes. The user then prints that data onto a label. I got from my previous posts, I can print that on my label Each sheet has four labels, 3x5 inches. I print landscape and adjust margins to select the right label.But I want to limit the amount of text the usr can enter to the amount that will fit on the label. In essence, what I would like the user to see is a virtual label on the screen that they can type data into and get exactly the same formatting on the label when they print it.
I found several (mostly old) articles about linking the RTB to the printer, but nothing on how to set and limit the size of the RTB to the exact size of the label.
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