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I'm developing an application for recording and playback audio files. i'm using visual basic 6.0
One problem I came to realize is the size of the audio file is too large and it is better if the files are to be in compressed format to reduce the file size. I wana use Window Media Audio codec but I do not know how to make it.
I need help from anyone .
Thanks
Ndanya
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Hi all
I am trying to do Application Sharing (Powerpoint) using VBA, For that i want to send what i am typing to my client system. I want to capture keypress or any of the key events. can anyone help me to achieve this.
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What your doing is sharing a desktop. This has already been done by applications specific to the task, such WebEx (www.webex.com).
How you want to do it just isn't practical. You'll have severe problems managing focus on the client machines and posting mouse and keyboard events to the correct controls, which is made even more difficult by the limitation imposed by using VBA.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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Actually i am broadcasting messages to clients when the events occurs in the server using UDP Multicast. I dont have any problem in doing this. The problem is i need to see what the server is typing . If it is not possible in VBA is it possible using VB
Thanks for your reply
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You run into the exact same problem. But check into VNC libraries to do the screen sharing. This seems to be a rather common project. Keep in mind, if time is an issue, you might want to look into a commerical product that does the exact same thing. You're not writing anything that hasn't already been done many times.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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Dave, Actually my project is Application Sharing. The Powerpoint file will be in UDP server which is using multicast IP and all the clients have their own copy in their local memory. When i start Slideshow in my server it must start in all the clients too. I have done these by passing messages to clients. Capturing the screen and sending is not a difficult task when the communication medium(wireless) differs it involves lots of bandwidth. So only sending messages of whats happening in the server is only option left for me, when the person in the server types something it should be sent to all the clients. "THERE IS NO ONE COPY OF FILE, EACH CLIENTS HAS ITS OWN COPY" So thats why i need to capture textbox events. Thanks for your reply.
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I am newbie for Outlook programming.I have created one folder named 'Test' in Outlook calendar using vb.net.There are somany folders in calendar.I need to create an appointment in the 'Test' folder.How can i find the subfolder of the Outlook calendar using VB.NET.I need to loop through the Calendar folder..
Any help is appreciated
Thank you very much
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hi
i am new to this vb.net, so i would like some help from the gurus of vb.net, how to adjust Brightness, contrast, satureation an image in picturebox using the trackbar....
lots of thanks in advance...
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I want an algorithm implemented using vb to compare two voice samples for the similarity.I heard about the similarity based retrieval algorithms but dont have an idea how to implement. Please help me to get the source code or at least how to do it in VB.
Jay
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I would imagine that any algorithm you find is going to be computationally expensive enough that it should be done in C++.
This is a pretty specific question, I'd suggest looking for more specific places to find answers. I doubt very much that anyone has done this in VB, so search for code/algorithms generally. You won't find VB code to do this online, and if I found some, I would not trust it.
Christian Graus - Microsoft MVP - C++
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here's a couple of places to start you off...
ShakyVoice - voice stress analysis tool
By Vladimir Ralev
http://www.codeproject.com/netcf/ShakyVoice.asp
http://unix.freshmeat.net/projects/liarliar/
LiarLiar - voice stress analysis tool
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I want to get a voice sample digitized using the sound card and to save it as a wave file.I'm very thankful if any body can give me an idea how to do it using VB6.
Jay
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To be able to digitize sound using VB 6, the simplest way to use is develop a program using simple visual basic functions. In windows environment, there is one library function "winmm.dll".
What you need to do is to include this library in your application and apply the mciSendString function with its parameters clearly defined. Then u can start writing the code for recording and saving the audio file.
for more information you can contact me or visit this site:
www.planet-source-code.com
Thank you
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Hi,
How can i access the dynamically added textboxes ?
I tryed with Session , database but i couldnt....... When i used Cookies i couldnt retrive the prop. of textbox but i got only the date and time of creation.
Thanks in advance 
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You need to create the textboxes very early in the page lifecycle ( before PageLoad, basically ), so they are there when the viewstate is loaded. They need to have the same ID's and be in the same place every time. Then if you want to access their properties later, you can search for them by ID, or you can store them as you create them, or you can discover them by iterating through the table/datagrid/whatever that holds them.
If you find them and the text isn't there, then you've failed the first condition I pointed out, make them early and make them the same.
Christian Graus - Microsoft MVP - C++
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Hi,
Thanks for ur kind reply.
I didnt get u sir.i am new to .net. I followed what u have suggested. i wrote it in Page_Init.I dont understand where i have went wrong. i am sending my pages plz check and tell .
1)Web3.aspx.vb
Imports System
Imports System.Net
Imports System.Net.Cookie
Imports System.Net.CookieCollection
Imports System.Net.CookieContainer
Public Class Web3
Inherits System.Web.UI.Page
#Region " Web Form Designer Generated Code "
'This call is required by the Web Form Designer.
<system.diagnostics.debuggerstepthrough()> Private Sub InitializeComponent()
End Sub
Protected WithEvents a11 As System.Web.UI.WebControls.TextBox
'Some more events for more textboxes
Protected WithEvents slno As System.Web.UI.WebControls.PlaceHolder
Protected WithEvents go1 As System.Web.UI.WebControls.Button
Protected WithEvents go As System.Web.UI.WebControls.Button
Protected WithEvents tt0 As System.Web.UI.HtmlControls.HtmlTable
'NOTE: The following placeholder declaration is required by the Web Form Designer.
'Do not delete or move it.
Private designerPlaceholderDeclaration As System.Object
Dim z1, z2, z3, z4 As New TextBox
Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
'CODEGEN: This method call is required by the Web Form Designer
'Do not modify it using the code editor.
InitializeComponent()
Dim s1, s2, s4, s5, s7, s8,s10, s11 As Label
'Dim z, z1 As HtmlInputText
If Page.IsPostBack Then
s1 = New Label
s1.Text = " "
z1 = New TextBox
z1.EnableViewState = True
z1.Columns = "50"
s2 = New Label
s2.Text = ""
s4 = New Label
s4.Text = " "
z2 = New TextBox
z2.EnableViewState = True
z2.Columns = "50"
s5 = New Label
s5.Text = ""
s7 = New Label
s7.Text = " "
z3 = New TextBox
z3.Columns = "50"
s8 = New Label
s8.Text = ""
s10 = New Label
s10.Text = " "
z4 = New TextBox
z4.Columns = "50"
s11 = New Label
s11.Text = ""
slno.Controls.Add(s1)
slno.Controls.Add(z1)
slno.Controls.Add(s2)
slno.Controls.Add(s4)
slno.Controls.Add(z2)
slno.Controls.Add(s5)
slno.Controls.Add(s7)
' slno.Controls.Add(z3)
slno.Controls.Add(s8)
slno.Controls.Add(s10)
' slno.Controls.Add(z4)
slno.Controls.Add(s11)
'Response.Cookies("v").Value = z.Value
'Response.Cookies("v").Value = DateTime.Now.AddDays(1)
Session("t") = z1.Text
Session("t1") = z2.Text
'Session("t") = ViewState("z2")
'Session("t2") = CType(ViewState(z3.text),String)
End If
End Sub
#End Region
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Put user code to initialize the page here
End Sub
Private Sub go1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles go1.Click
Dim s1, s2, s4, s5, s7, s8, s10, s11 As Label
If Page.IsPostBack Then
s1 = New Label
s1.Text = " "
z1 = New TextBox
z1.EnableViewState = True
z1.Columns = "50"
s2 = New Label
s2.Text = ""
s4 = New Label
s4.Text = " "
z2 = New TextBox
z2.EnableViewState = True
z2.Columns = "50"
s5 = New Label
s5.Text = ""
s7 = New Label
s7.Text = " "
z3 = New TextBox
z3.Columns = "50"
s8 = New Label
s8.Text = ""
s10 = New Label
s10.Text = " "
z4 = New TextBox
z4.Columns = "50"
s11 = New Label
s11.Text = ""
slno.Controls.Add(s1)
slno.Controls.Add(z1)
slno.Controls.Add(s2)
slno.Controls.Add(s4)
slno.Controls.Add(z2)
slno.Controls.Add(s5)
slno.Controls.Add(s7)
' slno.Controls.Add(z3)
slno.Controls.Add(s8)
slno.Controls.Add(s10)
' slno.Controls.Add(z4)
slno.Controls.Add(s11)
'Response.Cookies("v").Value = z1.Value
'Response.Cookies("v").Value = DateTime.Now.AddDays(1)
End If
Session("t2") = z3.Text
End Sub
Private Sub go_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles go.Click
Response.Cookies("us").Value = a11.Text
Response.Cookies("us").Value = DateTime.Now.AddDays(1)
Response.Redirect("web4.aspx")
End Sub
Private Sub Page_DataBinding(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.DataBinding
End Sub
End Class
2)Web4.aspx.vb
Imports System
Imports System.Net
Imports System.Net.Cookie
Imports System.Net.CookieCollection
Imports System.Net.CookieContainer
Public Class Web4
Inherits System.Web.UI.Page
#Region " Web Form Designer Generated Code "
'This call is required by the Web Form Designer.
<system.diagnostics.debuggerstepthrough()> Private Sub InitializeComponent()
End Sub
Protected WithEvents push As System.Web.UI.WebControls.Button
Protected WithEvents a11 As System.Web.UI.WebControls.TextBox
Protected WithEvents at1 As System.Web.UI.WebControls.TextBox
Protected WithEvents at2 As System.Web.UI.WebControls.TextBox
Protected WithEvents at3 As System.Web.UI.WebControls.TextBox
Protected WithEvents at4 As System.Web.UI.WebControls.TextBox
Protected WithEvents thfff As System.Web.UI.HtmlControls.HtmlTable
Protected WithEvents tt1 As System.Web.UI.HtmlControls.HtmlTable
'NOTE: The following placeholder declaration is required by the Web Form Designer.
'Do not delete or move it.
Private designerPlaceholderDeclaration As System.Object
Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
'CODEGEN: This method call is required by the Web Form Designer
'Do not modify it using the code editor.
InitializeComponent()
End Sub
#End Region
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Put user code to initialize the page here
End Sub
Private Sub push_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles push.Click
a11.Text = Request.Cookies("us").Value
'Dim SessionCookie As New Cookie
'at1.Text = Request.Cookies("v").Value
at1.Text = Session("t")
at2.Text = Session("t1")
' at2.Text = Session("t")
' at3.Text = Session("t1")
' at4.Text = Request.Cookies("v1").Value
' End If
at1.Text = Session("t")
at2.Text = Session("t1")
at3.Text = Session("t2")
End Sub
End Class
Regards,
Shrinidhi.
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Why are you doing this ? If you know there are four, why can't you put them on your page ?
I *think* you need to overload 'LoadViewState' and create them first in there. TO be honest, it's a while since I did this, but I recall it was very ugly stuff.
Christian Graus - Microsoft MVP - C++
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Hi,
Actually there are 9 static text boxes and 2 buttons one for more text boxes and one to navigate to other page. more button will produce these dynamic textboxs. to be honest sir, before sending code to u i have deleted some lines of codes actually the page contaions more.
Using LoadViewState means like this ?:
Session("t") = CType(ViewState(z3.text),String)
or
Session("t") = ViewState("z3")
One More Thing, why i couldnt get with the help of Cookies? its permenent in comp. till u remove right? Why i get only date and time of creation not expected result ?
Regards,
Shrinidhi
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nidhishri wrote:
Using LoadViewState means like this ?:
Session("t") = CType(ViewState(z3.text),String)
or
Session("t") = ViewState("z3")
No, LoadViewState is a function you need to overload in the class. To be honest, I'm stretching my memory, you should google on LoadViewState dynamic control or something and see what articles you find.
nidhishri wrote:
One More Thing, why i couldnt get with the help of Cookies?
How is a cookie going to know what is in viewstate ?
Christian Graus - Microsoft MVP - C++
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 hellow... i really need help on how to send and receive sms and email using vb.net, actually i'm new here and it is my first time to use vb.net,i'm a vb6 user, i'm going to use nokia 30... i really need help...  pls help me...
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how can i access parallel port using vb.net under win xp and win server 2003
Monsieur Khaldoon
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HOW TO: Access Serial Ports and Parallel Ports by Using Microsoft Visual Basic .NET
http://support.microsoft.com/default.aspx?scid=kb;en-us;823179
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As I write this I am currently looking on my own to figure out how you print a file directly. I want to be able to just specify a file, and have it print directly to the default printer. I can write text, and print. I just can't read a file, and print.
I have newly converted to Vb.net from VB 6.0. I was an intermediate VB programmer at best. I am a bit intimidated by .net. It seems to have lost its simplicity that VB 6.0 has. be that as it may I am trying to get over the learning curve, and become comfortable with VB.Net. Any help on my current dellima is appricated.
Thanks,
Eric
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Idreamer75 wrote:
seems to have lost its simplicity that VB 6.0 has.
*grin* I am not going to comment on this...
So the problem is that you need to read the file, the printing part is under control ? The System.IO namespace has everything you need to read a file. If it's a text only file, I believe there's a TextReader class, or something similar. There are certainly plenty of examples about.
Christian Graus - Microsoft MVP - C++
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I have developed an application in asp which will be installed on a server running Windows OS and used by the client pda running Linux OS through localhost.
Now the problem is that I have some reports to be printed using the printer installed on the server. The printer can't be installed on the pda ( due to some reasons , I dont know why. but this is the answer I got from the client)
I tried to search regarding this but was of no use. One of the solutions which I got was of using AddWindowsPrinterConnection or AddPrinterConnection. but according to my knowledge the client machine should also have windows operating system for that.
The another way which I got is writing an activex dll. The file will be streamed from the client side to the server side and then the activex dll (registered on server) will print the page using the printer installed on the server.
Can anybody suggest me the best method to be used under the given situation. Should I write an activex dll and if yes then can anybody provide me some links which can help me for writing it as I haven't written any dll till date. and if not then what will be the best solution.
Please help me as its a bit urgent.
Thanks in advance.
Adarsh Shah
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