Create A Secondary Message Loop
Aug 26, 2010
I've got an app working semi-background stuff in the GUI thread. Another thread won't work and a timer won't work. But I want the app to be responsive while I'm going my 'background' work.I cound use application.doevents - but that gives me 3 bad choices:
-loop with no sleeps - end peg an entire CPU (my task waits on stuff besides calcs & I/O so this matters)
-loop with a sleep - then the app slows down
-Try to make a 'smart sleep' loop that speeds up when lots of messages happen (check for messages in messagefilter function)
[code]why I can't use application.run, or threads, what I want to do is handled the OnUnhandledException event, then leave my app open for a while while some winforms stuff closes it down gracefully and tells my watchdog program to restart the app. after allowing the user to finish a critical process, too. Yes, I know people thing that a program getting OnUnhandledException deserves to die (obviously MS), there are 'dangerous' things that could happen; none of them are as dangerous, however, as the wrath of my users. Looking for vb.net sourcecode exact translations of the above two functions.
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Jan 6, 2010
create a message box that stores my user name, message, and post datetime into the database as messages are sent. Soon came to realise, what if the user changed his name? So I decided to use the user id (icn) to identify the message poster instead. However, my chunk of codes keep giving me the same error. Says that there are no rows in the dataset.
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim name As String
Dim icn As String
Dim message As String
[code]....
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Feb 22, 2009
how to create an error message by message box to tell the user to enter a number only if they key in a character value?
I MEAN AFTER THEY PRESS THE CALCULATE BUTTON
Private Sub btnCalcFat_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalcFat.Click
Dim intFat As Integer
intFat = Integer.Parse(txtFat.Text)
lblResultDisplay.Text = txtFat.Text * 9
End Sub
My text box is call txtFat
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Dec 10, 2011
I'm Writing a class to Encapsulate the RegisterHotkey Windows API, So I needed a Message Loop to catch the WM_HOTKEY message and I was directed to use a ApplicationContext as a replacement of my form, and then I needed to add a Class that Implements IMessageFilter to monitor the Window Messages.
It Is my first Time working With Application Context's and the IMessageFilter interface
I created a empty test project just to show you guys what I'm dealing with and not all my other nasty code. Currently I get nothing in my debug and when I set a breakpoint on Debug.WriteLine(m.Msg) it doesn't get hit.
Imports System.Windows.Forms
Imports System.Diagnostics
Module Module1
[Code].....
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May 31, 2010
So I made a simple patform game where the player has to jump quickly while the platforms move to the bottom of the screen, as to not touch the bottom of the screen. But, I need to know how to create a loop to loop the locations of the platform. This means that after twenty or so platforms, the same platforms come up again, so that the player will have an "endless" game. I've declared all the platform's locations relative to the location of the first repeating platform:
[Code]...
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Sep 8, 2010
I've developed an application in VS2008. Whenever I dragged the application from the primary monitor to the secondary monitor, the mouse cursor changes from the default one to resize when hover over windows title bar. How do I fixed it? I want it to remain as the default one.
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Jul 8, 2010
I have a dual monitor setup. I want my app to run in the secondary monitor by default (through settings in my app). I have been browsing the net for a solution and I found a solution which is setting the Form.Bounds to the Bounds of the secondary monitor. My problem is that if I set the bounds of my newly created form, when it gets displayed, it doesn't show in the secondary monitor.
private void button2_Click(object sender, EventArgs e){
Form1 frm = new Form1();
frm.SetBounds(-1280, 112, frm.Bounds.Width, frm.Bounds.Height);
MessageBox.Show(string.Format("frm.Bounds [{0},{1}]",frm.Bounds.Left,frm.Bounds.Top));
//frm.Bounds = Screen.AllScreens[1].Bounds;
//frm.Location = Screen.AllScreens[1].Bounds.Location;
frm.Show();
MessageBox.Show(string.Format("frm.Bounds [{0},{1}]", frm.Bounds.Left, frm.Bounds.Top));}
In the code above, I first set the bounds, I can see from the message box the settings I assigned. After form gets displayed, I checked the bounds again, it has changed to it's default. How do I show then a newly created form to a specific Bounds?
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Feb 18, 2011
I am currently working with a program where the user is prompted to click certain points on a picture within the picturebox on my form. The issue is that some of the points need to be pretty precise and i want to give them controls to slide the points once they have clicked them. The method for sliding is fairly simple but i want to be able to graphically show it in a secondary picturebox.
[Code]...
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Apr 27, 2012
I am trying to write a VB .NET program that runs a Perl script and reads and uses the standard output. I'd like to be able to handle each line separately as it is printed, and update my program display accordingly. Here's some code I have "written" (read: "mostly copied off the internet"):
Private WithEvents pscript As Process
Private Sub myProgram_Load(sender As Object, e As System.EventArgs) Handles Me.Load
pscript = New Process()
[Code]....
This works with one problem: the program waits until the test script has run to completion, and then fires several OutputDataReceived events one after the other. This means that when I make it use the real script, it's likely to do nothing for as much as several hours, and then have to deal with, like, 5,000 events at once, despite the fact that stuff was being printed at fairly regular intervals throughout that time.
Is there any way I can make it deal with each line of text when it is written, instead of all of it at once at the end?
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Mar 25, 2009
used the WMI ChangeZoneType DNS command in C#VB.net before. I get an incorrect parameter exception when i try and invoke the changezonetype command. I get the dns zone that i want to change from the dns server (via query), set the zonetype to the appropriate uint value but am then getting the exception. I am trying to change the zone from secondary to primary and according to MSDN all the other values are optional (and as far as i am aware are needed when you want to change from primary to secondary) so i have not included them.
Below is the code that i am using....
For Each DNSZone As ManagementObject In mgrZones
mngrZones = DNSZone.GetMethodParameters("ChangeZoneType")
mngrZones("ZoneType") = System.Convert.ToUInt32(zoneType)
[code]....
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Jun 17, 2009
I have been working on a project of mine that will streamline some issues at the office. (Note: There is not much in way of documentation or comments as I just started on this)
This is what I have so far and I am getting this error:
"System.ObjectDisposedException was unhandled"
I can edit the database with the second form initally, but it pops up an error after I return to Form1 and then attempt to enter into the 2nd form any subsequent time after the first initial load.
Here is my code:
Option Strict On
Option Explicit On
Public Class Form1
[Code].....
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Apr 12, 2007
What I'm trying to do is to launch Powerpoint Wiever 2003 in my secondary screen.I can get a form to launch in the 2nd screen but any programs I launch from that form stary screen.[code]
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Jul 21, 2009
I have two forms for my application, that are visible in the Windows taskbar. When a modal dialog is popped up on the main form, the secondary form is locked. However, when the user clicks on the secondary form on the taskbar, it appears over the modal dialog box, and is basically frozen. Is there a way to ensure that the modal dialog box does not draw underneath the secondary form? The topmost property is no good, since this draws on top of everything, even stuff not related to the application.
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Jul 21, 2010
Dim count As Integer
For count = 1 To 10 Step 1
Dim But+count As New Button
myButton+count.Width = 100*count
[code]....
Dim But+count As New Button => How to make it work
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Mar 8, 2012
i have a small wp7 application with just a main page. The main page has 4 buttons and calls the ConnectionSettingstask for wifi, bluetooth, airplanemode and cellular data setting. I have also managed to create secondary tiles for any of these buttons. The OnNavigateTo event handles the secondary tiles using a key passed from the tile [code]The problem ia that when the user uses the secondary tile to call a task, the application opens directly the connection settings page, but after that the back key, instead of opening the phone main menu, open the main page of my application
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Nov 30, 2011
I have below Visual Basic 2010 code to draw a chart using Excel then export to picture. I am not able to create the seondary value axis. i keep getting error "failed to call COM component". The problem is coming from the bolded section. However, why i remove it the chart comes with secondary axis but problem i need to set an axis title which i am not able to do so. what is the correct way to create a secondary axis and title in Excel.Interop?
[Code]...
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Nov 25, 2009
When I isolate the following code to create a chart, the result is normal. But when I call it from a control, duplicate legend and Y-axis scales and labels appear.
I did a line-by-line comparison and detected no code differences.
1) What is the likely culprit?
2) Is there a cleaner way to activate a graph?
Private Sub Button15_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button15.Click
Dim frm As New WindowsApplication1.Form8()
[Code].....
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Jun 14, 2009
I need to create a message box that pops up and says "I am looping, do you want me to continue" with a Yes or No option. If user answers "Yes", I need to continue the loop with another message box with the same question. If the user answers "No", stop the loop.
I have tried this over and over and I get it to the point where if I click "NO" the first time, the message box goes away. but if I click "yes" the first time, no matter how many times I click "NO", the message box will not go away.
This is What I have....
Dim intResult As Integer
intResult = MessageBox.Show("I am Looping. Do you want me to continue?", "Loop", MessageBoxButtons.YesNo)
[Code].....
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Mar 30, 2010
i would like to create a new line in my Message Box, i would like it to appear like this...New Read Number must be greater than Zero OR Make sure ther's a data in both input boxes [code]
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Feb 17, 2009
I would like to create an Outlook message with most of the text filled and the user just has to click send. I rather have the user click Send than for the program to send the message automatically. The below code doesn't work. What modifications does it need?
Dim objSmtpMail As System.Net.Mail.SmtpClient
Dim Attachment As System.Net.Mail.Attachment
Dim Mailmsg As New System.Net.Mail.MailMessage
[Code]......
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Mar 26, 2012
I would like to create an outlook message with a subject and some attachments for the user to send when they are ready. I have the file paths for the attachments.
Basically the user needs to click a button on the application and that open an outlook message window with a predefined message and a few attachments. They should then be able to modify and add the required "To" etc before sending via outlook.
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Oct 29, 2009
How to create a dll file that show an msg ?
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Aug 10, 2011
how to create message box with 2 button ok and cancel ok for exit aplication cancel to stay in aplication when i clic Exit Command_button i creat in that aplicaton form
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Oct 1, 2010
I'm trying to replicate the Gmail Notifier popup.It both fades in (Opacity) and raises from the start bar.
I've managed to do the fade inout using a timer and opacity but how do I:
A) make the form appear to 'pop up'? (I think its height grows via a timer from 0 to it's max?
B) Locate it's start point exactly above the task bar as pictured on all screen resolutionsWindows flavours?
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Jan 30, 2009
I have a data from database (from, to, cc, bcc, subject, body, sent_date, attachment). How can i create Outlook message file (*.msg) to adding thoes records?
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May 3, 2012
I'm looking for a control that will allow an user to create an email html message simulair to outlook but without the use of outlook. I'm now using outlook to create emails from my program, but if outlook is busy or has a popup open, it will generate an error and no message is send. The users of my program need to have full freedom in creating the message, all the program does is open the new email window, fill in the email addresses, subject and some basic information in the email.
Then the user can add text and/or images to it, before sending. What I need is a control/library that will give me a popup window with most of the basic editing stuff like adding images, putting text in different fonts and/or colors. I can probably create something myself to do this, but I don't have the time for it and it would be a waste of time if it already exists.
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Sep 24, 2009
I want to create vb.net dll for exe ie displaying error in message box after installation....For example if connection file is not correct after installation then it should display in error message for that db connection is failed.....It should happened after installation....
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Jan 24, 2010
Create an email message (with image attachment)?
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Mar 19, 2010
I want to create application to send message to Mobile by SMS , But I didn't know what the requirement for this and what the steps to make this application?
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Jun 21, 2010
i have a form with 4 text boxes on them when the user selects add the information from the textboxes saves to my database im just wondering does anyone know how i would make an error message appear if one of the textboxes was blank and stop the new data being saved until all textboxes have data in them?i did write the following peice of code but it did not work Private Sub Button1_Click(ByVal sender As System.Object, ByVal e_
[Code]...
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