Get The Window Handle And Focus?

Aug 22, 2010

I have a handle to a window using the FindWindowA() function in the User32.dll (Windows API) and I would to get focus on that window at a later time in my program. how to do that with either a .NET function or User32.dll function?  Is there a totally .NET way to get the window handle and focus?

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Window Focus - Right Click On The NotifyIcon, Excel Gains Focus?

Mar 10, 2009

Here is what I've done:1) Created an Excel COM add-in for Excel 20032) Added a NotifyIcon to the Windows taskbar notification area (aka system tray) during ThisAddIn_Startup3) Added a ContextMenuStrip with a ToolStripButton to the NotifyIconWhy is it when I right click on the NotifyIcon, Excel gains focus?  If after clicking on the NotifyIcon to display the ContextMenuStrip I choose not select an option on the ContextMenuStrip and instead click back on the Excel window, I get a weird flashing cell in Excel.I've created a video of the problem to help you see what I [url] anyone know how to prevent this?  Ideally, I'd like to be able to click back on Excel and only have the ContextMenuStrip close and Excel regain focus.

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Find The Handle Of The Child Window For The Yes Button In The User Account Control Window?

Mar 20, 2010

I am trying to find the handle of the child window for the Yes button in the User Account Control window so i can click it. This window has a structure with a few child windows with the same name.

Dim hwnd As IntPtr = FindWindow(Nothing, "User Account Control")
Dim hwnd2 As IntPtr = FindWindowEx(hwnd, 0, "DirectUIHWND", vbNullString)
Dim hwnd3 As IntPtr = FindWindowEx(hwnd2, 0, "CtrlNotifySink", vbNullString)
Dim hwnd4 As IntPtr = FindWindowEx(hwnd3, 0, "Button", "&Yes")

There are multiple CtrNotifySink with its own Button child window or other child windows. How do i search thru the different CtrNotifySink window to find the one that contain the Yes button so i can send a click to it? I do need to find it before i can send a click, right? because i try just sending it to the main window with sendmessage and nothing happen.I even try sending it directly to the handle found by spy++ of the yes button with bm click but nothing happen?

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- label1
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I am basically trying to list all visible (in taskbar) in a listbox and then, after clicking a button the selected process will catch focus (if it's not minimized). However, I have been using this code, and only seems to work on Notepad, on NOTHING else.

Imports System.Runtime.InteropServices
Public Class Form1
' This is 2 functions from user32.dll (1 for finding the application and 1 to set it to foreground with focus)

[Code]....

I have also used MANY alternative API's to test it on, it seems that after the line "ParenthWnd = ...." only the notepad window can be found using findwindow.

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Aug 18, 2011

I have been doing research on how to set focus to another window, after times of reading "GetWindow" and that stuff all I got is a headache and this:

' Used to get access to Win API calling attributes
Imports System.Runtime.InteropServices
Public Class Form1

[Code]....

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May 20, 2009

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If you open several FullTilt games table, you can see that when on a table is required action it jumps automatically in foreground, BUT WITHOUT TO BE ACTIVATED, so that it title bar is grey and not blue. The window is the top window for my eyes, but it is not active.Now the question is: how to get the Hwnd of the topt VISIBLE desktop window (the window that is over all the other windows), also if it is not the active window?I can't use the GetForegroundWindow Api, becouse it gives the Hwnd of the top ACTIVE window...

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Mar 1, 2012

<DllImport("user32.dll", SetLastError:=True)> _
Private Shared Function SetActiveWindow(ByVal hWnd As IntPtr) As IntPtr
End Function

[Code]......

I'm trying to make use of some functionality from an external app in my program.

My problem is this:

My program manages to start the external app correctly and I can even get the WinHandle correctly if I don't use "ProcessWindowStyle.Minimized" when starting the app.

If I start the app minimized, WinHandle = ProcID.MainWindowHandle returns a 0 and as I understand it, it's

because the app is hidden in the system tray.

How can I start the app minimized and then get the window's handle once it has been minimized?

I've tried various functions like FindWindow and BringWindowToTop but none of them seem to work.

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The code i am trying to make work is,[code..]

I searched a bit for an equivalent.

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Jan 10, 2012

I am following some instructions that apparently work with vb6, but as i have downloaded the lastest version of visual studio i think its up to version 10.[code]The error is that hWnd is not a member of windowsapplication1.form1.

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I'm using a third party dll for my project and one of the function that is provided by the dll use form handle as one of the argument. But when i call the function, I'm not using any window form and it's just called from another class. So what value i should put for that argument?Here's the example of that function:

AVS_Measure (device_handle, form_handle, no_measurement)

After this function has been called, it will send message to the form_handle argument whether the measurement data is available and valid.I called this function from another class just for triggering start measurement and i have another function to retrieve the data. I do not have any form associate to it, what value i should put for this argument?

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The examples I've seen that detect device attach and detach all use RegisterDeviceNotification which requires a window handle to receive the attach/detach messages at.

How do I receive these messages directly into a function without a window to get a handle from?

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Window Handle Changes Between Events

Aug 1, 2011

I have the below code. When I execute this code, the handle is different between the Load event and the Shown event. I thought the handle was static for an instance of a window. What could cause the handle to change? The only other thing the form is doing is setting itself to invisible and setting the ShowInTaskbar = False in the Activated event.

[Code]...

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Aug 20, 2009

My project is in VB.Net 2003. Actually it is a converted project from Vb to Vb.Net. If we run the application windows is not in focus, window is going to background. How to resolve this error?

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Jan 11, 2010

My project is in VB.Net 2003. Actually it is a converted project from Vb to V

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Nov 3, 2010

I am using VB.NET and need to activate a certain window. Is this possible? If so, how?

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May 2, 2010

How do I check which window is in focus? For example[code]...

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Jul 20, 2010

is there any way to find which window has focus on it?

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Sep 30, 2009

How can I see if a specific window is in focus?

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There are  three forms on this application and they are a MDI Frame(frmMain) and two child forms (frmSearchEmp, frmEmpDetail).

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Jun 1, 2009

how can i get the window handle for the Word editor window? [code]

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Jan 27, 2011

WebBrowser Handle new window: How I can open it in a new window

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Jun 30, 2010

I need to have a VB form that runs out of focus behind another program. When I press "A" (I'll use "A" and "B" as my example keys), "B" is then sent to the program in focus from the VB form and held until "A" is pressed again.

I've worked out how to get it to repeat a key press hundreds of times but I need it to HOLD the key, rather than to just Press and De-press countless times.Here's the piece of code which repeats the letter "A" 100 times:

Dim Index As Integer 'My count variable
For Index = 1 To 100 'Count from 1 to 100

[code]....

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May 6, 2009

how to set either a focus window or active window or something, but still able to move around in other windows with out my SendKeys function sending keys to any other window. This is the code I have to set the active window to the window I need to sendkeys to:

Dim targetWnd As Long = FindWindow("ncrwgst1.wal-mart.com - PuTTY", vbNullString)
SetActiveWindow(targetWnd)
Timer1.Start()

Now anytime I have like notepad or even my Remedy window up, it sends the keys to that window. how to set it where it JUST sends to the targethWnd I have defined and still move around in my other windows?

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Show A Window Without Taking Focus?

Oct 22, 2009

to be so simple turns out to have me scratching my head.I have a program that monitors input inside of Quickbooks. When a customer is entered into a sales order my program checks my database for any special information and if it exists, opens a TopMost window to the lower third of the screen with the information showing that is special to that customer. The problem I have is that when the customer is found and the window opens, focus is taken away from Quickbooks and given to my newly opened form. Is there a way to prevent this so that the users input isn't interrupted?

With frmMessage
.Width = Screen.PrimaryScreen.WorkingArea.Width
.TopMost = True

[code]......

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Dec 14, 2010

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]...

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Dim thread As New Thread(AddressOf ExecuteQuery)
thread.Start()

ExecuteQuery executes the query and I'm making an error deliberately to see if I'll be automatically switched to the log tab which is in Try-EndTry procedure:

tbGrid.SelectedTab = tbGrid.TabPages(1)

The program indeed switches to tabLog (which is number 1) but I don't see any controls on it (txtLog), then when I'm trying to switch tabs a couple of times I get "Error creating window handle in a thread". I read other forum threads about it where people as how many controls do they have in their programs but my program does not exceed 70 controls on a form.

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Oct 10, 2009

I made a program that is started and running in memory and minimized to the system tray.

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I can use the Windows API call:

[code]...

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[Code]...

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[code]...

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The function works fine and thread is completed. But calling any method of datagridview after thread is completed ( outside the worker thread ) generates an error- "Error creating window handle".

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[Code]...

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'***************Calling sub window from main screen**********
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[Code]....

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Here is what i need:

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