Detect When Application Loses "focus"?
Jul 22, 2010Is there anyway to detect if the vb app I am developing loses focus, ie, if a user switches to another task. Maybe is there a way to detect which process in windows is active ?
View 6 RepliesIs there anyway to detect if the vb app I am developing loses focus, ie, if a user switches to another task. Maybe is there a way to detect which process in windows is active ?
View 6 RepliesI have a form which contains a progressbar and a Listbox which update as the code runs through and performs some sometimes time-consuming calculations.
At one point in the code, it breaks to ask the user to enter a number using :
Usedefault = MsgBox("Do you want to use the default value of " & Default_No & "?", vbYesNo)
If Usedefault = vbNo Then
[Code].....
this works fine but I find that once the data entry is complete, and the code continues to run, the form loses focus and the progressbar and the Listbox updates cannot be seen until the code finished its calculations.
I have a form with a "print" toolstrip button. When I click that button I run the code shown below. The print dialog box appears. The title is dark blue seeming to indicate it has focus. The main form is lighter blue indicating it does not have focus. But hovering over the "Print" button (or the cancel button) does not cause it to change color. If you click on the print button, then the color changes and the second click causes the appropriate action. Same with the cancel button. If you click on the dialog label or on the main form the only thing that happens is the print button will then become "active" and a click there then works. If you click on the main form once, nothing happens, but if you click on it a second time you get the "bonk" sound indicating you ae clicking on the wron modal. As if this isn't strange enough, this action just started recently. I made a few unrelated (as far as I can tell) changes, and discovered this action.[code]....
View 15 RepliesI have a listbox on a form and when the user selects a value and the listbox loses focus I want to validate the value the user chose. How do I call my function once the listbox loses focus?
I tried using a custom validator but it gives me an object is missing error.
Mike
when clicking on the start button in the code below, the form seems to lose focus and I need to click the stop button twice to stop the count. (First click to activate the form, second to click the button) Can someone please explain this behavior or offer a better alternative?
[Code]...
I have a richtextbox, when I leave it for example to go to another panel where I want to manipulate the selected text I can no longer see the selected text. Is there a way to make it still show the highlight?
View 1 RepliesI have the following gridview that is inside an updatepanel:
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Button ID="ButtonAdd" runat="server" OnClick="ButtonAdd_Click" Text="Novo Artigo" />
[code]....
i have a checkbox, when checked, contextmenu shows and remains visible until unchecked.. then i ran into a problem.. if i click any other control on my form, the context menu disappears and the checkbox remains checked. i have tried placing
[Code]...
How can i make a program stay above the task bar even when it loses focus with visual basic 2008?
View 1 RepliesI'm trying to have a Textfield lose it's leading zeroes when the user leaves the field. I made the following "Leave" event but it's not working. It works for the first half however to set it back to 1 if it's blank or if a user entered 0. I tried following the advice on this answer, but it didn't work:
[Code]...
I have my form set up to be able to be kept on top if the user so chooses. When it is set to be kept on top, I want the opacity to be reduced when the form loses focus. When I set opacity on init, it works fine. When I use this code, it doesn't work:
Private Sub Form1_LostFocus(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Me.LostFocus
Me.Opacity = 0.2
End Sub
[code]....
Maybe I misunderstand how LostFocus and GotFocus work, but according to MSDN this appeared to be what I wanted.
I have a question regarding waiting for closing a window or changing focus back to my app. What i have is an app that creates a few tables, that then puts the tables into a temp file that wordpad opens for the user to check they are correct, this is where i need help, i would like to now wordpad is open wait until the user closes wordpad or changes the focus away from wordpad until i open the next form which is responsible for using the tables and converting them into xml.
Which event should i look at using that fires when a program is exited or gets focus?
Most of my experience in Visual Basic programming is in VBA. I'm currently trying to build a VB.NET Windows application that basically consists of a form that has one button and one label. When the button is clicked, the label should serve as a "counter" that counts from 0 to infinity until the user closes the window with the "x" button. I do this by putting a loop with a sleep statement in the onclick sub. The loop iterates the integer that is displayed in the label and does a "Me.Refresh".The problem is when the window loses focus. When it loses focus (when I click off of it), the counter stops. Even when I click back on it, the counter doesn't resume.
View 19 Replieshow can i detect pressed keyboard keys while the focus is not on my running win form or any of its controls ?
View 1 RepliesI am working on a carputer app, and it will be relatively basic with common tools. I am going to make an onscreen keyboard that fits the style of my app, but I want to make it a seperate application from the main app. All I want it to do is is have my keyboard become visible whenever I enter a text field of any application, whether it be programmed by me or a third-party app. Think about this in the way of a smart phone... Whenever you enter a textfield the system keyboard is displayed.
View 2 RepliesMy application has a form which contains several Textboxes where user is required to fill up data. Once data is filled up user can click on "Save" button to save the data. I have added lost focus events to all textboxes so as to validate user input. When I click on cancel button, i want to detect cancel button click, but textbox lost focus is fired first so I get error message for textbox before my code moves to cancel button click handler. Is there any way to detect button click before lost focus event?
View 4 Repliesim working on a little app for my self, to make my life a little more convenient. I have some media keys on my laptop, and I would like to use them with itunes while it is minimized. I found a app that did it for me a long time ago, but cant seem to find it now. But I would like to try my hand at my own, and I've managed to do so, but, my app has to be in focus for it to work. is there any way to still detect when these media keys are pressed while my app is out of focus?
View 9 Repliesdetect whether the current application is a console or a winforms application.The reason that I want to do this is that I am developing a library with a global error handler in it and I need to know what type of application it is in order to be able to subscribe to the appropriate exception event.Obviously I could get the user to pass in a parameter specifying what type of application it is, but I would rather deal with that automatically so its all encapsulated from the user of the class.
View 1 RepliesIn my windows application, the first form is login form. When the user double clicks my application, the applications icon flashes in the taskbar though the cursor is in the username textbox. The user then again should use the mouse to turn the focus to the login form. But however while i am working with the source code its working just fine
View 7 RepliesI want to ask the user a barrage of questions regarding configuration settings within the application. All that is handled, except that I want to ask them on the first run. (Kind of like a "Welcome form".) My question is, what is the easiest way to detect the first run and how would I go about doing so? Side note: regarding the link above, which location would be a good location to set a key value? (I've never really worked with the registry much until now.)
View 10 RepliesIn VB.NET, you can set focus to an external application using
AppActivate("Windows Name")
or
AppActivate(processID As Integer)
Now this works fine if you do for example:
Dim intNotePad As Integer = Shell("C:WINNTNotepad.exe",
AppWinStyle.MinimizedNoFocus)
AppActivate(intNotePad)
But when I do:
For Each theprocess As Process In processlist
If InStr(theprocess.ProcessName, "DWG") Then
strProcessList += String.Format("Process: {0} ID: {1}", theprocess.ProcessName, theprocess.Id) + vbCrLf
AppActivate(theprocess.ID)
[code]....
then it doesn't find the window, even if it's open and even if it finds the window using the window title.But I need it by process ID.How can I do that?I need it to set focus on a 3rd party installer in a windows installer setup project.
I'm trying to make a WM6 version of this simple windows app, and I have some certain problems. Under a timer event I have several instances like this (don't ask why timer and why this way, it just works in my case):
Code:
If ent1.Focus = True Then
ent2.Text = Math.Round(((ent1.Text) * 3), 1)
End If
[Code].....
It didn't work under WM6 so I've changed it to ent1.Focus.
Anyhow, the problem is that under WM6 focus is jumping around with the timer, i.e. different textboxes become active every timer iteration making it impossible to work with the program.
I am using VB.NET to build my application. And in my application has a lot of Forms. It doesn't use MDI Parent Form, but I use another simple Window Form (I named it frmMain) that I suppose it is my MDI Parent Form. When frmMain load, windowState = Maximized. And when I open a Form (example: I named it frmCustomer) that I suppose it is my child Form, and I set its properties (frmCustomer.TopMost=True) when it load, so it always on the top. But When I change to open another application such as Ms. Word or Mozilla Firefox... the frmCustomer is still on the top. how can I know my frmMain lost focus?
View 1 RepliesI have been working with the Notify Icon to make it easier for some who prefer minimizing an application into the notification bar rather than the task bar. I have a drop down item that allows the user to Show in Notification area if checked. If it's not checked, then the form reverts back to default with the task bar. However, when this is checked and I minimize the form, I can not open the form from the notification tray. The problem is when the notify icon is visible and clicked, I need it to run code. If the form is minimized, I want it to show the app when I click the icon.
Here is my code:
Private Sub ShowInTaskbarToolStripMenuItem_Click(sender As System.Object, e As System.EventArgs) Handles ShowInTaskbarToolStripMenuItem.Click
If ShowInTaskbarToolStripMenuItem.Checked = True Then
NotifyIcon1.Visible = True
[Code] .....
I am using SendKeys.Send("{HOME}") in a MaskedTextBox to bring the cursor to the beginning of the textbox when the text is empty. When I try to close the project the application freezes if it doesn't have focus. How do I put this application in focus before I call SendKeys? [Code]
View 2 RepliesI have an application which calls an external process. I would like this process to be open as soon as it is called. i.e. with no user interaction.This is because I would like to send Keys to it to interact.I know how crude this is but this is a thrid party application that my boss has promised will open is a specific way. Dim procSungard As System.Diagnostics.Process = _
[Code]...
I opened firefox from my VB program. the browser launched and loaded the page correctly.
When I click back into my VB application, the browser goes to the back. When I click the button that activates the browser, the browser still stays in the back.
I want the browser to move to the front or in front of my VB application window so that the user sees it instead of the application. How do I do this in my program?
I can't find anything about a Visual Basic application that doesn't open with focus I've written an application that takes the current clipboard text and changes all letters to lower case, then the first letter of every word to upper case (the first letter after a space), this is for when I download a file that I want to look neat (such as an mp3 audio file). It's output is then placed in the clipboard to be used as the filename (or text).
I've set a shortcut key (Ctrl+Alt+X) to open the application by placing a shortcut in Accessories so it runs instantly whenever I hit the shortcut combination. However the application steals focus when it runs, so as soon as it ends I lose focus altogether, and I then have to Alt+Tab and find where I was when I used the shortcut! There are 2 possibilities for my application, the latter is what I really want, but the former is OK for me:
1. I use Ctrl+C to copy, The application runs and then switches to the original focus (focus before using my shortcut combination), I can then Ctrl+V to paste.
2. The application runs WITHOUT stealing focus altogether, this way I can have the application copy the selected text for me, and replace it aswel
[Code]...
I have an app that calls another executable and then minimizes it until I need it. But when I do this, my app loses focus and when the user types into my app it inputs unwanted input to the minimized external application.
Is there a way to give and take focus between my vb app and the external one?
I am making an application that automatically sends text (Basically an autotyper) for a game called "Minecraft". Minecraft is a java application. I need Minecraft to be in focus when button1 is clicked. It will then send the keys.I know how to get it to focus on simple things such as notepad but it is not working for minecraft.
View 1 Replies