Forms :: ListView.TopItem And Minimized Window?
Jun 15, 2011
I have an issue in a project trying to auto-scroll down a ListView (used as Details with columns) when adding a new ListViewItem when the window is minimized. I guess we have to use TopItem property to set force the listview to scroll down.I get two exceptions when the form is minimized: "Object reference not set to an instance of an object." "Index (zero based) must be greater than or equal to zero and less than the size of the argument list."
I'm just using standard .Net components (Events/Delegate) with standard way to use them.
I made a small test code to isolate the issue:
[Code]...
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Feb 9, 2012
I have a VB.NET application that uses Managed DirectSound to capture audio.Everything works just fine until (a) the application is minimized or (b) the application is completey obstructed (covered) by another window.
The thing is that the CaptureBufferDescription structure does not include a GlobalFocus property so I don't know what to do to let my application continue capturing when the main window is hidden.
Here's the basic initialization code I'm using:
' Create a buffer description object
bufCapDesc = New CaptureBufferDescription()
With bufCapDesc
[code]....
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Jan 20, 2010
Why is it when I call another VB program, it is minimized?
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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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Feb 26, 2011
But i have a problem so i want to Send one key to a minimized form if u know what i mean like running it in the background its the key "F5" that i want to send. It works if the window is focused but as soon as i start my internet it refreshs the sites there and not where it was ment to b
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Apr 26, 2012
im a complet noob in vb . i have been trying to figure out how to send keystrokes back to my own application , while minimized/ Or focused on an other window.i think i need to use PostMessageA . i read about it on forums. But its like chinese for me.my goal is to run these little programs by the 100's on 1 pc. and they just press a key in their own application , over and over.i was thinking something like this
Private Declare Function PostMessage Lib "user32.dll" Alias "PostMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Private Const WM_CHAR As Long = &H102
PostMessage("notepad", WM_CHAR, "T", 1)
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Dec 22, 2008
i have an mdiForm. it has the standard "windows" menu option, thats lets you change the layout of the child windows, it also has the list of currently open windows. is there a way to access that code that generates that list so i can alter so that is window from the list is selected and it has been minimized, it wont just set the focus to that window but open it to the normal state?
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Jun 28, 2010
I used to know vb6 and I need to make a quick application.
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Jul 27, 2009
Heres my code that does not work:
Private Const MOUSEEVENTF_LEFTDOWN = &H2
Private Const MOUSEEVENTF_LEFTUP = &H4
[code]...
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Mar 3, 2009
I know how to send mouse clicks and keystrokes into an application when it is open and active, but this particular application the task is very repetitive and can be done with a script of sorts. What i want is how do i make a program to be able to send inputs (key clicks) into the application when it is minimized (the application minimized that is). doing this minimized would then allow me to do other more important things whilst the vb program is sending instructions into the other app.[code]...
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Dec 28, 2010
Known the external window size, it Hwnd and the x/y coordinates of the button to press, I am trying this code, like seen on the web[code]\...
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Apr 8, 2011
I have made a project on Library management system using Microsoft Visual Studio 2008 and Sql server 2005 .I have used MDiParent form in this project, from where I can click on the menu item to open the desired form.
I am now able to open the child forms in the main window background.Now what happens is When I click on one menu Item it open in the parent form background.I am able to open all child forms corresponding to the click event in the MenuToolStrip ...all in the Parent form Now the problem is that I cannot minimize child forms when I minimize Parent form..I want child forms also to minimize along with the Parent form.. Also are child forms still not attached to the parent Form is also my question here.....
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Sep 12, 2011
I've got this little 'Sticky Notes' type of application and the form I have is a borderless, taskbarless form and for Windows 2000 compatability I'm using VS 2008 and targeting the 2.0 framework. One of the hurdles I have is that in XP, Vista & 7 when you click the Show Desktop button all of my note's windows get minimized and without a taskbar icon, it's not easy to get them back (at least not for a normal user) & I'm looking for a way to either right after the windows minimize I just have them all show again or if I can skip the minimizing message in the wndproc altogether that'd be great.
I've put together a test app that'll show the messages in a listbox for the form, but I'm not sure how to go about skipping sending the message to the form's base class. Here's a snippet, listMessages is the listbox on the form:
Private Const WmSize As Integer = 5
Private Const SizeRestored As Integer = 0
Private Const SizeMinimized As Integer = 1
[code]....
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Dec 2, 2009
I have created an app which has a timer control which, when activated and meets a certain criteria, launches a second form with an alert for the user to review and action. this works just fine. Except.... when the main app is minimised and has lost focus, instead of launching the second form to a normal windows state it opens and sits in a minimized state itself and just flashes. How can I get the the second form to restore to a normal windows state?I have tried form2.focus and tried the windowsstate=normal etc but I'm still barking up the wrong tree.
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Nov 2, 2009
I using visual studio 2008 and visual basic.I need to create a form that pings my companies servers and gets the return value of the ping and displays the results in a label and run with a timer. I have eveything pretty set up and working the way I want it to but I would the command window pops up when the command is run. I found some code that was supposed to keep the command window in the background but it doesn't seem to work. [b]Can ayone help me figure how to make the command window run in the background or at least keeping if from popping up?/B]This is the code I found. According to the article I read False should keep the command window minimized. I tried it with true and I also tried it with False and neither worked.
objCmd = objWShell.Exec("ping " & url, 0, False)
This is the actual code I'm trying to run.
Public Function fnPingmeVer3(ByVal url As String) As String
Dim StringReturn As String
Dim objWShell As Object = New Object
[code]....
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Apr 9, 2012
I have a filter that is used to populate a grid view and the url will conain: /example/grid?value1=1&value2=2
It will then have a link to page 2, which allows them to edit something.I then want them to click a link that will send them back to the gridview under the same parameters of: /example/grid?value1=1&value2=2
Is this possible? How do I hold on and fill in the URL values so it knows how to refill the grid view accordingly?
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Jun 7, 2009
In the main form the user can choose to download information from a device.Since this request takes time, when "download information" is pressed I open new form in a separate thread: Private Sub RunDownload()
[Code]...
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Apr 21, 2009
I am having a problem regarding to pass all the data on the listview from one form to another and add another columns. The purpose of my columns is that I want to put text from there because I am sending a mail but I want to get the status of my message if it failed or send and write it at every end of the rows.
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Feb 24, 2009
if you guys have used office 2003 or better( i am sure all) then you would have seen that when the help window open it causes the active windows say of MS WORD to change accordingly so that this help windows fits with it along the right side and this functionality i want to implement in my VB windows application and have no idea how to do it Also i have seen this feature in GOOGLE DESKTOP GADGETS...
i want to implement that when my application opens which ever is the active window( of any application) snaps to the left and allows my application to fir in the right hand side i am developing my application in VS 2005 using Visual Basic.
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Feb 19, 2010
How do i change the values inside a listview after inputing some values from another window. The window with the list view doesn't close. There is a button where you can open another window that will store a value in a variable. then after closing the 2nd window, (ok button) how will the value appear?
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May 8, 2010
I am trying to build a NOTEPAD/WORDPAD like application with vb.net on visual studio 2008.
I need an option to define and choose (MsWord, or CSS like) paragraphs styles, such as: "heading1", "green quotes", etc.
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Jan 16, 2012
I am not able to find the Exclude Command in VB 2010 Express. I have no idea which version of Visual Studio it is working with. I've got one 217MB VB 2010 Express file and many 2008 VB Express files with one of them measuring 31 MB. There many other SQL files and .Net Files.
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Feb 23, 2010
how do i resize an object(listview datagridview) if the window is maximized? and how to properly place the buttons when maximized?
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Jan 30, 2011
I am attempting to bind a ObservableCollection to a ListView but when I attempt to debug the program VS2010 is throwing the exception "Window must be the root of the tree. Cannot add Window as a child of Visual"If I was to remove the attempted ItemsSource binding the WPF window opens (obviously without any data in the listView). I have create a Sub in my codebehind that parses an XML file and adds values to the ObservableCollection, I then bind the ListView.I have stepped through the code, and the error appears to be in the XAML as the Sub completes without error, the program errors after the CodeBehind has completed, everytime.
[Code]...
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Aug 21, 2009
I am opening a PDF file in Acrobat then am sending the Menu keys using sendkeys.AcroHandle gets the value but the send keys always working with my .Net IDE. It is opening the .Net IDE file open menu. It supposed to open Acrobat File open.
AcroXAVDoc.Open(FileName, "Acrobat")
AcroHandle = FindWindow(vbNullString, "Acrobat - Adobe Acrobat Professional")
If (AcroHandle <> 0) Then
SetForegroundWindow(AcroHandle)
System.Windows.Forms.SendKeys.SendWait("%(FO)")
End If
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Oct 22, 2010
I would like to hava an application in which I have several buttons on the main scream. Each button will open new screens (or forms) but I'd like them to open it in the same screen as the main form not in a new one.
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Jan 8, 2010
I've got to the stage where I want to make changes to my application so that all of my forms appear to the user as a single window.
I have a main Form with a menu bar which opens up three separate forms. Only one forms is visible at any time.
One way to do this, that I can think of, is to place all the controls from each of the "auxiliary" forms on a panel contained in the main form and then show and hide the panels, when needed. I can envisage this being a big headache though.
Another way would be to give each form a menu bar and make it look like the main form so that the user would not know the difference (with a bit of luck).
I just wonder if there are better ways to do this. Maybe if I could incorporate one form into another form?
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Oct 1, 2010
I am just learning vb.net using vs 2008. I have a small forms app which I have conected to a small, single table 2 column database. I enter some numbers into a text box, press a button and the data gets entered into the dbase. However the only data that gets displayed in the data table I have on my form is the existing data.No new data entered is shown until I close down and restart the app. I have tried many times using statements such as [code]...
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Dec 19, 2011
I am creating a small program that can automate the input to a web browser window, Like a survey filling bot but for my personal use,All I want to know is there any way to simulate a Mouse click for a particular element in a web browser window so that It can submit the form automatically ?
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Jan 5, 2010
I have a border-less window made by this function:
Private Sub MiniWin()
Me.Visible = False
Me.Text = ""
[Code]....
and when is in this state I can't move it... so how can I move the form when is in this condition?
Second Q: how can I forbid the window form not to be re-size-ble and stay within the given dimensions?
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