I am working on a custom bulletin board system for my company. The idea is to have a program running that displays a full screen bulletin board on many monitors around our facility. I wrote a VB client that pulls from a server and displays a single board perfectly - I am wondering how to expand this.
View 10 Repliesi've managed to have the form in fullscreen.. How can it fullscreen if the computer has dual monitors?
.MaximizeBox = False
.MinimizeBox = False
.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None
.WindowState = System.Windows.Forms.FormWindowState.Maximized
If a form is being displayed on the secondary monitor, is there a way to make sure that a MessageBox generated by that form will display back on the primary monitor? The form is being displayed over a projection system and some messages do not need to be seen by the audience, just the computer operator.
View 1 RepliesI just got this really cool 9" monitor (USB attached) which I will be using for dialogs in my vb application. Can someone tell me why this code displays on both machines? if I change screen=AllScreens(1) to (2) the form is only shown on the primary but I want to show it on the very cool USB screen.
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I have a button btnRegEx that when pressed shows a ContextMenuStrip, similar to the '>' button in the Find/Replace dialog in Visual Studio when you are using Regular Expressions. I have a ContextMenuStrip cms which I show using its Show(x,y) method.
At first I was simply setting x and y (the location of the ContextMenuStrip) to some point next to the button, but I noticed that when the button is close to the edge of the screen it goes off screen. I wanted to prevent that so I built some logic into the x-y calculation. When the ContextMenuStrip width is larger than the 'remaining space left' I simply show it more to the left. Same for its Height of course. I am using the Screen.GetWorkingArea(point) method to determine the 'remaining space left'. As I understand it, it returns the working area closest to the point you specify (to which I pass the button's location).
As long as I stay on my first monitor, it is all working perfectly fine. The problem occurs when I move the form to my second monitor. The contextmenustrip is still showing on the first monitor for some reason...
Here is the code I am using:
vb.net Private Sub btnRegEx_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnRegEx.Click
Dim p As Point = PointToScreen(New Point(btnRegEx.Left, btnRegEx.Top))
Dim x, y As Integer
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I have noticed that when I click the button when the form is on the second monitor, the buttons location (p) is calculated with the first monitor's top-left corner as (0,0), even though it is on the second monitor. This way, the GetWorkingArea function returns something like 1280, while the buttons x-location is something like 1700... So, how do I get the buttons coordinate relative to the actual screen it is on, rather than the entire dual monitor screens as a whole?
I try to create a dual video player with VB 2010.
With that I have 2 forms, 1 main form (with all the controls and it should contain a preview screen of what is being displayed on the second form.
And a second form (with a windows media player component).
Now the main form should have (as told) a preview screen of what is shown on the second screen, I want to know if it is possible to have is as the windows 7 taskbar thumbnail (when preview the mediaplayer).
I recently bought this multi-touch monitor (writing on it right now :P), and am creating an application for it. Now I need to detect which screens are touch-enabled. For example, I have the touch screen as my main monitor now, but I also have a secondary regular screen, I need the aplication to be able to detect which monitor has a touch screen, EVEN WHEN THE TOUCH SCREEN IS THE SECONDAY NONITOR!
View 4 RepliesI have an application that produces a form whose objects are scaled to the width and height of the primary monitor whose parameters are obtained from:
Dim ScreenWidth As Integer = Screen.PrimaryScreen.Bounds.Width
Dim ScreenHeight As Integer = Screen.PrimaryScreen.Bounds.Height
So far, the program works fine. A possible problem arises when multiple monitors are being used that do not share the same resolution. For example, if the 2nd monitor has a low resolution, then the form is cut-off.
I'd like to:
1.) determine that more than half the form has been moved to another monitor
2.) determine the resolution on the second monitor.
I suspect that the following command will give me all the dimensions that I need:
Dim ScreenWidthUsed As Array = Screen.AllScreens
In which case I just need to determine the screen that is hosting more than 1/2 the form.
So I have a code atm that has 2 combo boxes, one to select the make, then it will enable the model, I have 3 model choices, here's code: [code] Once I have selected my model of the car, it takes me to that specific form with a picture of that model, I then want to display individual parts, with individual prices that will add up in a text box above.
View 2 RepliesI would like to believe that this code will display a horizontal line halfway across the PictureBox pbxData. In fact, what it does is create the BitMap and then blow up with a memory violation when trying to copy the BitMap into the PictureBox. The code that alters the array is commented out because I don't know how to address the elements of the array.
how to make this into useful code?
Imports System.Runtime.InteropServices
Public Class Form1
Private b1 As Bitmap
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I have several images in my My.Resources i wish to load the images into a user controle i wish to change the image loaded into the card control at each pass of the for net loop to make my own deck. but i can not change pdeck(c).face = CType( My.Resources.he10, System.Drawing.Image)
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So I am having an issue where I want to call a variable without addressing it directly and I get an error for it:
Conversion from string "player1BuzzLock" to type 'Boolean' is not valid.
This is technically correct but why would it fail?
Dim player1BuzzLock As Boolean = False
Dim PlayerNum as Integer = 1
'...
Dim playerBuzzLock As Boolean = CType("player" & PlayerNum.ToString & "BuzzLock", Boolean)
I simply cannot refer to a control on a form from module code as in all other versions of VB. Here is the code that I mean:[code]The fact that this cannot seemingly be done without getting into looping through an array of controls, assigning the control to a general control variable etc. and much more guff is puzzling and is in my opinion an added complexity to Visual Basic. There must be a simple way to do this - I just want to refer to the value in a control, on a form, from a module.
View 13 Repliesrecent thread, there was a passing discussion regarding running Rick's program in a background worker in order to keep the user interface "alive". The thread was actually about memory usage, so I decided to put this together instead.First, I'm sure no expert at any of this, so do take all of this "as is" and with a healthy dose of skepticismThebackground worker is a fairly easy way to let your program run time-consuming or complex operations on another thread so that your main thread (your user interface) stays active. This can be done other ways of course, but the BGW has many things builtinto it that makes it ideal to use for just this sort of thing.
One caveat to keep in mind is this: You cannot directly "talk" from the BGW to your main thread or you'll get a cross thread violation exception. As an example, you cannot set a label's text value (on the form, thus on your main thread) from the BGW, butyou can modify class-level variables then in the BGW's Progress Changed event, it will update that text based on the variable.In this example I'm doing this two ways: The first is a calculation of the percentage done (so that I can display it textually and in the progress bar), and the other is text indicating the status.
In vb.net, you can address a public variable from another form using the form name along with the variable.
form2.show
form2.k = 3
However, if you use a form variable to show an instance of the form, you must use that variable name to address the public variable. Two instances of the same form are displayed in the following example. The public variable k is assigned a value of 3 only in the first instance of the form, the one from form2.show. frm.k can be used to assign a value to the other form.
dim frm as new form2
form2.show
frm.show
form2.k = 3
Assuming only one instance of the form is shown in the application, is it reliable to address a public variable using the form name (form2.k), or is it better to show the form with a form variable and use that to refer to the instance of the form (frm.k)? Would the same answer apply to a property as well as a public variable?
I have been writing visual basic and vb .net applications for years and have come across this problem with the timer component under Windows 7 32bit on dual core Intel processors. This problem only occurs with Windows 7 running on a dual core processor, single core and under the virtual pc on any processor works.
I have attached a test program to show this problem. The program uses 2 timers to count down to 0. It does not matter what type of timer component I use system.timer.timer or system.windows.forms.timer. I read the system.timer.timer may fix this problem so I changed the program to use it but it did the exact same thing. Left it in anyway.
The program: Timer1 is set to a number of ms for a given amount of time say 150000 for 150 seconds and started. The timer will expire correctly. At the same time a second timer Timer2 is set to 1000 ms for a count down display to 0. Timer2 fires and the count is updated. This happens and everything looks fine. When Timer1 fires I disable timer2 so it will stop counting down. Timer2's countdown is at 2 instead of 0. It is firing slow. If I increase the value of timer1 to say 500 seconds timer2 is behind by 6 seconds. These amounts are the same for the 2 very different computers I ran this on but both are dual processor systems running Windows 7. The exact code works correctly on Windows Xp on the same processors and works under Windows 7 on a Pentium 4 system.
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My app displays a list of records in a DataGridView on the main form. I've developed code for cut/copy/paste for the selected records and have put the code behind Cut/Copy/Paste menu items under a classic 'Edit' menu design, with the standard shortcut keys(Ctrl + X, Ctrl + C, Ctrl + V).
The trouble is, I also want the shortcut keys to work on selected text when I'm editing inside text fields on a record in the DataGridView. So I need the shortcut behaviour to change depending on whether I'm editing a record or selecting record(s).
I have a form1 and many other sub forms in my software.I want all those forms to work on a 2nd monitor (if the user does have a 2nd monitor)while working on my 1st monitor as well.But i don't have 2 monitors in my system hence i cant test this feature out.But dual monitor integration is a very important part of my software.
View 1 RepliesThe command works but im getting an incorect time It returns 15/9/2009 12:00:00 the date is fine (was ok when this thread was written)but the time is always the same 12:00:00 Is something wrong with the server or am i entering not the right command?
View 1 RepliesIs there a simple way to differentiate single display vs. dual display clone? I am asking about dual clone, not extended desktop. .Net Screen class treats dual clone as single display. I could not find useful WMI method also.
View 6 RepliesIs this possible in VB 2005? Mirroring or extending over a second display?
View 2 RepliesBTW this issue occurs in any MS office program when the VB.Net (or even VBA) is processing information.Example: In Excel, a worksheet is displayed on the screen. I start either, a VB.Net or VBA procedure and within 30 seconds the Excel worksheet (previously displayed) blanks out. In both VB.Net and VBA,ScreenUpdating = False. My expectation is that the previously displayed screen would stay static as if I left my desk to get a cup of coffee; came back and the same ole Excel worksheet was still there?Of course, setting VBA Screen Updating = False accomplishes two goals: 1) speeds up processing and 2) saves the user from seeing unnecessary "garbage-processing" steps.Why does VBA or VB.Net ScreenUpdating = False not freeze the screen at the time of its invoking?
View 11 RepliesI need a 2-listbox mover/selection type control such as the example here: [URL] For over a week now I've searched countless forums and done myriads of googles. All I've been able to find is C++ or ASP based stuff. I really would like this to be VB.net, but at this point, I'd even settle for C#.
I've taken a shot at developing it myself, but am too new to the .Net world to really get anywhere with it other than being completely overwhelmed and frustrated. I've even looked at some 3rd party custom control webistes, and am even willing to spend a few bucks for this thing, if I could find one that suits my needs.
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I've got a dual monitor setup, my main monitor is a Dell 20" 1680x1050 res, secondary is a Dell 17" 1280x1024.I've just updated my gfx driver (nvidia driver version 190.62).I'm using code like that shown below to get the screens and I always assumed that AllScreens(0) would be the primary screen and AllScreens(1) would be the secondary but this appears to be reversed since I updated my driver.
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Is my coding in error or is Windows reporting the screen information wrongly ? How can I be sure to set AllScreen(0) as the users primary screen and AllScreens(1) as their secondary ?
i am looking for a way to make a clone of 2 webbrowsers when i make a click in the first webbrowser it shows the same in the second webbrowser
detailed:i am making a program with a touchscreen and a hdtelevision setup as extended monitor at the touchscreen you can control what is happening on the tv now i want to control a webbrowser but the problem is i want a internetbrowser on the touchscreen where i can make changes and clicks on the websites
and then i want also to view the internetbrowser on the tv to see the website this is meaning i want a clone from the internetwebbrowser from the one on the touchscreen to a clone on the hdtelevision some sort of linked copy/clone of the webbrowsers
how do I prevent my users for more than one simultaneous login per account. I am using Vb.Net SQL.
View 2 RepliesAfter I upgraded from Windows Xp to Windows 7 on any dual core cpu machine my programs that use a simple timer function run incorrectly. The program works with the exact same hardware under Windows Xp and Windows Server 2003. I am using Visual Studio 2005 to write .NET Visual Basic programs that use 2 timers to count down. The first timer, timer1, is set to a value say 150000 ms (150 seconds). The second timer, timer2, is set to 1000ms (1 second). Both timers are enabled one right after the other from a button click event and begin. The timer2 routine running every second updates a label counting down the seconds. When timer1 fires it disables itself and exits. Timer2 also checks to see if timer1 is still running if it is not it will stop. Under Windows Xp and Windows Server 2003 the resulting count in the label is 0 when timer2 detects timer1 has finished. Under Windows 7 when timer1 stops timer2 is not at 0 it is 3 for 150 seconds and gets larger the more timer1 is increased. It appears to me timer2 is not being fired every 1000ms as it was under Windows Xp.
I have included the Visual Basic code below. If you want to test it just run Visual Studio and create a new project. Put the buttons, numericupdown, and labels in your form and past my code into the correct buttons. I have used these type of timer events for years without any problems unit Windows 7. Windows 7 on a single core Pentium 4 with hyperthreading turned on works fine. Windows 7 on a dual core E6500 fails, Windows Server 2003 works.
Public Class Form1
Dim I As Integer
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
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I have a dual-monitor setup. When I launch the main program, I need to make sure that it always launches in "Screen 1". I have a button within the program that launches another fullscreen window and I need this to always launch in the next available screen (read: not covering the main program window)I am using the System.Windows.Forms.Screen class to try to accomplish this and have have had about 80% success. I can successfully test for multiple monitors (which enables the button). When they click it, I can get it to always launch in the second screen. The problem I'm encountering while testing is the main program is launching in Screen 2, so the second window covers it.
Here's what I'd like to accomplish ultimately: I would like to always launch my program in Maximized stated (and disable resizing,
minimizing/maximizing is ok, just not double-clicking titlebar to resize) in the primary monitor (where Taskbar is being displayed). Then, when the button within the program is pressed, it launches the new window in the NEXT available monitor in Maximized stated.
have a question. The scenario is this Main monitor (17 inch) is used for POS system.Will have at least 2 more monitors (50 inch tvs used for digital menu)I want the main pos program to be able to set what is written there (easy on a form) but have different forms to ALWAYS go onto one of the tvs (they would be plugged in via VGA).
I have read some examples but I havent seen anything with different size monitors.How can i ensure that the main program runs on the 17 inch screen while the 2 forms of the menu will display on tv1 and tv2 and the same tv each time?
What im trying to do, is have my program run full screen on the primary screen, and diable all other screens. I have it 'full screen' and constantly on top of everything with this
Dim b As Boolean = _
SetWindowPos( _
Me.Handle, _
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It is in a timer, so its always on top. how do i turn off, or disable all other monitors, besides the primary screen. (How do i check if they have other monitors, and if they do, how many, and disable them all, with exception to the primary screen.)