I have a problem with showdialog when the showdialog form is being disposed. The Application focus to another program opened in taskbar. if nothing is opened then it focused to desktop.
View 2 RepliesWhen I add a new vendor to a screen I'm using a .ShowDialog on a simple form to ask for a couple of key fields first - like the name and some "must be unique" fields.
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A MDI form which is used to call a child form (frmCust), there is a customer datagridview in the child form whereby user can double click on any customer row to call out the frmCustDetail form to display all customer details.I have got what i want but I encountered two problems shown as below.2) Lose focus - Sometimes when i close the frmCustDetail and get back to the child form. the whole
View 3 RepliesI 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?
Quote:
Originally Posted by kaliman79912
Quick note: Close does not dispose of the form if it was displayed using .ShowDialog, but I guess this is not the case.
I did not want to hijack the other thread [URL] but would like to have this clarified for me.
I want to open a form as modal without using showdialog()Problem with showdialog() is we can not open the form as mdi child with it. i want to open few forms as modal but as mdi child forms. but i want to make sure user cannot go anywhere else without closing thst form.if we set parent form enabled = false then i can not set it as mdi child otherwise that form also becomes enabled=false.
if we write showdialog() then so many form icons will appear on taskbar. it we open as mdi child then only one icon appear i don't want to appear so many icons on taskbar so i want to open as mdi child but as modal
for eg. Mainform = mdi form
from mainform open formA = as mdi child of main form (but modal)
from formA open formB as child (modal)
from formB open formC as child (modal). if i use showdialog() then so many form icons on taskbar.
h2007
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View 7 RepliesI have mdi application, on main form which is mdi container and has a tree view. i open the child form on afterselect even of treeview. the issue i'm facing that i open the form but focus remain on tree view until i click on the the form. my question is how i can give focus to form rather it stays on treeview. i tried frm.focus also activatemdichild(frm) no sucess.
View 21 RepliesI looked at the Dispose() method in System.Data.SqlClient.SqlTransaction (using a decompiler):
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Why does everyone say in forums that it is Rolling back in the dispose? Where does it rollback?
I have a litte app where i can open saved files and i using "dialog.ShowDialog" to do this.
But the problem is that i want it to upen a subfolder to the applications folder, not the applications parent folder.
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I have a custom settings file that I designed using the designer. In my form, I have a function that creates a new instance of this settings by using a dim statement. Then I add this new settings object to a hashtable. After I exit this function, I no longer have access to the settings object without using the hashtable to retrieve it. If I want to remove the object from the hashtable, I can do a simple remove but the settings object still exists somewhere in memory. How can I dispose of this object as well since it inherits from ApplicationSettingsBase and does not have a built in Dispose() function?
View 5 RepliesI am indifferent if you are a VB.NET or C# or other .NET developer. I have a FACTORY class like the following:
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I was wondering if you should dispose undisposed resources before closing your application. Maybe it's not necessary to do this because closing your application automatically takes care of this.
View 2 RepliesAn application that has 3 Webbrowsers instantiated at design time navigates to webbrowser2 15 times every minute with a different webpage. Webbrowser2 is disposed of after each web page is received and processed. The size of the private application memory continues to grow as when the disposal was not instigated. The application memory grows to 1GB and then the program stops responding. Any suggestions? [Code]
View 1 RepliesI am looking for a code snippet which opens a image, creates a clone of this bitmap in memory disposes this opened image so that all handles are closed.
Usually we can open a bitmap using this[code...]
the following code however keeps the Image File locked until the application is running, any suggestions how to dispose it properly. (So that no handle is left open )
Things i already tried: use dispose method of bitmap <= doesnt work (need to write implementation)
Using Block also doesnt work.
I am developing an application in .NET with C#, I need to write a .VBS script which will open the Windows Explorer and will select a simple .txt file.
View 4 RepliesWhy can't I get error msg and return focus to btnOpenFile when no file has been selected. If file is selected all is good. I think I need some error cheching here..right?Class Open (open File dialog)
Public Class Open
'set up class open file to be reusable
Public Sub OpenFile(ByVal OpenDB As System.Windows.Forms.OpenFileDialog)
OpenDB.Title = "Please Select a File."
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I want to open up an existing instance if my program is already running only if its running the same version.I noticed that this question was asked for only if the name exists, but what if the version is older, I just want to notify the user that an older version is still running, "please remove older version before starting this version."The other link is this one:Return to an already open application when a user tries to open a new instance but they don't talk about closing an instance if an older or newer version is detected.
View 3 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 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)
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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):
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If ent1.Focus = True Then
ent2.Text = Math.Round(((ent1.Text) * 3), 1)
End If
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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
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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 = _
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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
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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 RepliesI'm creating some software to keep my students on task. I've set it up so that I can control certain aspects of their computer from my computer. Problem is, I'm not sure how to control other applications from my application. I mostly just want to prevent it from being minimized. Some students like to switch screens quickly when I walk by. I would just like to make sure that it is always on top until I specify otherwise. I'm using VB.net, I'm using the 3.5 .net framework for compatibility reasons.
View 1 RepliesI want to develop an app which won't allow the user to open or jump to another application while it is open. It should be in Visual Basic. For example, if my application is open (running) and the user tries to open any other windows application like "media player" then it shouldn't open. The app should not even allow "task manager" to run. The application should completely block the windows environment while it is running.
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