How Do APIs Work

Feb 20, 2009

i am terrible when it comes to the programming area of APIs. Though APIs are well used in Visual Basic.NET so i must learn it.How do APIs work?How are they used?Can anyone either explain or supply me with a link about writing an API?


Get Information On APIs In Program?

Mar 12, 2009

Is it possible to get information on the APIs in Vb.Net?

View 2 Replies View Related

Possible To Access APIs In Python

Mar 17, 2011

To programming in Python, I was wondering if there is a way to access VB .net APIs using Python.

View 1 Replies View Related

Show Page To Get All APIs Used In VB?

Jul 27, 2009

Show the page where i can get all the APIs used in Also i need a program to put my program in the startup.

View 8 Replies View Related

APIs For Printer Page Number

Nov 25, 2009

APIs for Printer Page number

View 2 Replies View Related

APIs With 'File Download' Dialog?

Jul 13, 2011

I am currently working on an application to automate file download(s). My main application is running a query for downloads with embedded browser. When the results are returned they need to be downloaded and saved. This works fine. The last step of the process it to start download and the 'File Download' dialog pops up. I wanted to create another application that would monitor for the 'File Dialog' windows (knowing the main application Process ID I can ensure that I find only the dialogs generated by my application).

View 7 Replies View Related

Calling Win32 APIs In 64bit?

Jan 5, 2011

Long story short, code that used to work on my 32 bit computer doesn't work on my 64 bit computer. Does 64 bit require something like changing Integers -> IntPtrs?

View 11 Replies View Related

Compatible Sendmessage And Sendmessagetimeout APIs?

Jan 26, 2012

I need an API for sendmessage and sendmessagetimeout for my VB .net application. I have searched quite a bit, and everything I find doesn't seem to work: either the message just doesnt seem to be sent, or the message appears to be sent with the msg parameter always 0, and the wparam setting as what I enter for the msg setting. Pinvoke's also always seems to throw an AccessViolationException for I have no idea what reason. I tried playing around with maybe just where I put the variable, but unsurprisingly, there is not a simple logical switch of the variables.I have tried pinvoke's:

<DllImport("user32.dll", SetLastError:=True)> _
Public Shared Function SendMessageTimeout(ByVal windowHandle As IntPtr, ByVal Msg As Integer, ByVal wParam As IntPtr, ByVal lParam As IntPtr, ByVal flags As


View 1 Replies View Related

Difference Between Winreg And Advapi32.dll APIs?

Jun 3, 2009

What is the difference between the winreg and advapi32.dll APIs. I am trying to convert a VB code into Python. I have seen that the VB code has RegOpenKeyEx() from advapi32.dll. Now in Python, there is a topic on WinReg access and there this api RegOpenKeyEx() is mentioned. can I use this instead.

View 1 Replies View Related

SwitchParent - App With The SetParent And SetWindowLong APIs

Feb 3, 2011

I have consumed a word doc in my app with the SetParent and SetWindowLong APIs. When I close the app I want to leave the word doc open. I have used the SetParent and used IntPtr.Zero(2nd parameter) which kinda works - it just does not have a document border. Would I use the SetWindowLong function - if so what would the parameters be? I have looked at the SetWindowLong function, just not sure about the second and last parameters. What would be the proper way to do this?


View 7 Replies View Related

VS 2008 - Using APIs (Where To Get Method Params)

Dec 23, 2009

Finding the documentation on windows API's for use with visual basic? I used to use API guide until they stopped updating it in 2002. All I need is the api name as well as the list of parameters in order to use the API's functions.

View 2 Replies View Related

Writing A GPS Application - APIs Or Libraries

Jun 6, 2012

Am writing a GPS application but I need APIs or Libraries I can easily use. It's supposed to work real time...

View 5 Replies View Related

C# - Organizing .NET P/Invoke Code To Win32 APIs?

Mar 12, 2010

I am refactoring a large and complicated code base in .NET that makes heavy use of P/Invoke to Win32 APIs. The structure of the project is not the greatest and I am finding DllImport statements all over the place, very often duplicated for the same function, and also declared in a variety of ways:The import directives and methods are sometimes declared as public, sometimes private, sometimes as static and sometimes as instance methods. My worry is that refactoring may have unintended consequences but this might be unavoidable.

My instict is to organize a static/shared Win32 P/Invoke API class that lists all of these methods and associated constants in one file... EDIT There are over 70 imports to the user32 DLL.(The code base is made up of over 20 projects with a lot of windows message passing and cross-thread calls. It's also a VB.NET project upgraded from VB6 if that makes a difference.)

View 6 Replies View Related

Can't Find Any Reference Material Online For These APIs

Mar 10, 2012

I'm having some problems with some API calls. I'm trying to return device driver information for a given device in device manager so I can access the available information and display it. I'm using a series of API calls which in turn populates a list with device driver objects associated with that device. The API calls fail. The problem is that I can't find any reference material online for these APIs so I can figure out what's wrong. [code]

View 1 Replies View Related

Unzip A Zipped Folder Using Microsoft APIs Or Namespaces Perhaps System.IO.Compression?

Sep 19, 2009

can we unzip a zipped folder using microsoft APIs or namespaces perhaps System.IO.Compression. However, it seems to be cumbersome to use them. With a thrid party dll file it works perfectly fine, however i dont want to use it as we dont know what is actually happening inside. Can we have a piece of code which unzips a zipped folder.

View 3 Replies View Related

VS 2008 APIs Not Working In VB 2008?

Mar 18, 2009

Some win32 apis not working in vb 2008 .

In vb6 this code is working :

Private Declare Function Beep Lib "kernel32" (ByVal dwFreq As Long, ByVal dwDuration As Long) As Long
Private Sub Form_Load()
Call Beep(4322, 200)
End Sub

but when i try this in vb 2008 not working? not just beep of course, i tried more than 20 apis and maybe half of them worked. I dont know where is the problem. Should i do something special before calling apis in vb 2008?

View 8 Replies View Related

LINQ Group By Multiple Values Does Not Work Well But Work Well In C#

May 29, 2012

I found that when group by multiple values does not work well with VB.NET, but it works well with C# ,here are my code, is there something wrong with my VB.NET Code? Here is my VB.NET code:


View 1 Replies View Related

PerformClick() Doesn't Work - How To Make It Work

Feb 2, 2011

I have an application that requires data be entered, and after entering, a button is clicked to process that data. Clicking the button works just as it should--the data is processed properly. In constructing a test module, I provide a set of data values, followed by:


Nothing happens. I have used this syntax for years, and it has always worked flawlessly. I have triple checked everything else and isolated the problem to the failure of the PerformClick(). The PerformClick() is in a test subroutine that does nothing but fill textboxes and labels with default data, then calls the PerformClick() on the button to begin processing. Again, the button works fine, the data is entered as it should be, but the PerformClick() does not fire the click event.

View 21 Replies View Related

VS 2008 Could Not Get Form To Work On Work Computer

Aug 21, 2009

I have a form that works on my local Machine I created into. I have Office 2007 on this machine. I created the Form with the Excel 12 Reference. I move the Entire conetence of the Project folder to my work computer. Which has Office 2003. Do I need to recreate the form with the Excel 11 reference. I could not get the form to work on work computer. IT has a com error. I am acessing the EXE for the debug folder w/in the Bin Folder.

View 7 Replies View Related

Using Directories, Sub-Directories And APIs?

Jul 11, 2011

Basically I'm going to try and develop a software that merges PDFs automatically using the PDFSharp API.What I want in the program is to basically that: Have the program to give and Input and Output directoryMerge all the documents in the directory or sub-directoryRename the merged PDF file according the the name of the directory/sub-directoryIf the folder has PDF files and a Sub-Directory I want to merge the PDF files in the folder and rename them as per the main folder, and rename the files in the sub-folder according to its name (i.e. seperate|)

It's the first time I'm using an API.The problem I have is how to use the directories and sub-directories as I need them.

View 2 Replies View Related

DB/Reporting :: Will SQL Statements That Work In Compact SQL Server Also Work In The Express Edition Of SQL Server

Jul 25, 2010

will SQL statements that work in Compact SQL Server also work in the Express Edition of SQL Server?

View 2 Replies View Related

Work Around For PrincipalContext If Has To Work With .net 2?

Jul 21, 2010

Dim pc As PrincipalContext = New PrincipalContext(ContextType.Domain, GetPath) ADUserInfo.PasswordVaild = pc.ValidateCredentials(LoginName, Password)

View 1 Replies View Related

Error:Project Work On Seven System-Don't Work On XP System

Oct 19, 2011

I'm using vb2008 with DB MSA2007 (save it to MSA2003) on Seven(7)System After I create my project I build it(make exe). then I took the file of project (application) and the DB from Debug Folder.

I tried to run this application with DB on another computer it's system is seven and MSA2007 and work very well. then I run it on pc it's system XP and MSA2003. it showed this error

Application Error THE APPLICATION FAILED TO INTIALIZE PROPERLY (0XC000135). Click on OK to terminate the application

View 1 Replies View Related

EXE Program Don't Work Debudding Of Program Work

Jan 8, 2012

I'm building a VB(2010) program to create the graphics for my laserprojector.The program works when I debug it in VB, but when I run the EXE program in the release directory, it doesn't work. The problem in the EXE program is theat I can't draw/view graphics in the picturebox..I coppied my whole program to a new VB project, but I'm having the same problem...In the original project, where the program works, there are no warnings or errors.

View 3 Replies View Related

Get VB App To Work In VWD?

Mar 28, 2011

I created a windows form application using Visual Basic Express Edition 2008 but I did not know I could not use it on the web, which is what I wanted but being new to VB I just got a lot of headaches trying to figure this out. It works fine as a windows app but now just recently I installed Visual Web Developer 2005 to so I could create a web application from the windows app.

It is a simple windows application of a datagrid but now I want to run the same design application I made in Visual Basic to Visual Web Developer Express 2005. Is this possible? And, what do I need to do? I have all of the associated files in my project folder in Visual Basic Express folder.

View 1 Replies View Related

How Does Look-up Work In VB

Mar 14, 2011

how does look-up work in Visual Basic, I have done research on this but it does not explain. I have a Form1 called( Booking form) with 2 ComboBox's and 1 TextBox. each called (Destination_FromComboBox) and (Destination_ToComboBox) and (FareTextBox)and another form2 called (Fares Form) with 3 TextBox's each called TextBox1 (FromTextBox), TextBox2 (ToTextBox2), TextBox3(FareTextBox).So when I select (Booking Form) and Insert or select a Destination from (Destination_FromComboBox) and Insert or select a Destination To (Destination_ToComboBox) I want to read from (Fare Form/Fare Table) and give me the fare in FareTextBox on the Booking Form. Also on the booking I have 3 Radio Buttons 

(RadioButton1 = 4 Seater Car, Normal Fare)
(RadioButton2 = 6 Seater Car, Time & HalfFare)
(RadioButton3 = 8 Seater Car, Double Fare)

But there is also a time Issue as well:

If the time is Between 05:00 & 23:59 then normal time should be used
If the time is Between 00:00 & 02:00 then time & half should be used
If the time is Between 02:00 & 05:00 then Double time should be used

I have watched loads of video's and looked through forums and other codes for the combination of the above, without success?

View 5 Replies View Related

Using VB6 Don't Work On .net?

Oct 19, 2009

I have this great way to use VB6 I treated my project like a .exe file.Say I want to work on c:work directory.I just save as the .vbp file to c:work directory

All the other files (.frm,.bas,.cls) files are in a special directory called library ALL of my .vbp files, in c:work1, c:work2, c:work3 refer to that one same directory.How can I do that in

Why this is important? Bugs always happen all the time. If I just run .exe file, when bug happen, I cannot do a thing. However, if I run the project file and run the program in debug mode, when bug happen I can figure out what happen.

View 9 Replies View Related

Best Way To Work With RSS Feeds

Jan 23, 2010

I am a CS grad, but haven't had much to do with programming since my school days as I went the BA route.Anyways, there are a few things that I do manually on the computer and thought that I could probably save time by creating an application for them.But I'm not really sure how to start.I'd like to be able to keep a history of Completed eBay listing so that I know when the price point is good and when it is too high.I noticed that eBay has an RSS feed, so I think I can do it. Just a couple of quick questions:

1 - Can I instruct to open a web browser and read an RSS feed, or would I need to manually do this myself and then run the application?

2 - What is the best way to work with RSS feeds? Should I convert the data into XML first?

View 2 Replies View Related

Get A Percentage That Just Does Not Seem To Work?

May 23, 2010

I am trying to get a percentage that just does not seem to work.I am using WMI to get the Total Physical memory of my system and then the Free Physical Memory. Then get the percentage.

2147483648 - Total Memory
838028 - Free memory

According to Task Manager my physical memory is 59%. This is the code I am using but I can not get 59% or 41% that is free.

temp = FM/TM
temp = temp * 100
percent = FM * temp

View 5 Replies View Related

.net - Get The #if DEBUG To Work?

Jan 12, 2011

I have a simple application:Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

#If DEBUG Then
lblDebug.Text = "Debug"
lblDebug.Text = "Not in debug"
#End If

Now when I run it in VS, it prints "debug" like it should, but if i run the .exe, it still prints "debug". What do i have to do to get this to work right?

View 3 Replies View Related

.net - Me.Close Does Not Work

Sep 22, 2011

I'm working with'm having problems while I connect my application to my database today so I wanted to add an error handling to close the form.The problem is that when I put Me.close in a form, this form still open. I used the Form.Closing event handler to verify that it was called, and then ran my application in step by step which showed that the event handler was called, but the application continues and the errors appears to the to close a form properly without closing the application?

View 3 Replies View Related

AcceptChanges Does Not Work?

Jun 1, 2011

I am modifying a couple of fields of a datarow and immediately calling AcceptChanges on this datarow. Technically, after calling AcceptChanges, the RowState of the datarow must be "Unchanged", but it is still "Modified".  Why is this so?

View 3 Replies View Related

AcViewPreview Does Not Work In Vb6?

Oct 16, 2009

when i run the program the report prints to the printer without a preview

View 1 Replies View Related

Application Won't Work On Another PC?

Apr 24, 2011

I just finished creating my VB application and now when this application running on another PC, jumping out error (error image here [URL]..

View 1 Replies View Related

Array.contains Does Not Work?

Aug 5, 2009

I am using visual absic 2008 express edition. I am trying to produce two (FromNode, ToNode) random numbers and store in an array (ArrayTo(NoConnections)). The array should not have same values at the same time and the aary should not have the same number or the other way around. For example, The array should not have numbers like 22, 55, 66Šetc If the array has 13 and 45 then 31 and 54 is not allowed in the array and vise versa.


View 10 Replies View Related

Can Just Get This Snippet To Work

Oct 22, 2010

<div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste"> lblText.Text = "COMMUNICATIONS: Joe Blow ("</div> <div style="position:
absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;"


View 3 Replies View Related

Can't Get Databases To Work

Mar 14, 2010

I recently moved over to a Windows 7 computer and I can't get databases to work with I moved I used to do an Access database and connect it to VB through the ODBC thing. However, I don't have Access on this computer (open office) so I'm not sure how to create a database and connect it.I have tried to use the SQL Compact Edition that comes with Visual Studio but I not sure how to get it to work. Also would something like mySQL work with VB? I have looked at the mySQL workbench and like it, what else would I need to download to be able to use the databases created with it in Visual Studio?

View 2 Replies View Related

Can't Get DataGridView To Work?

Dec 7, 2009

I am trying to put in a datagridview in my program, and when I add the connectionMiscrosoft SQL Server Database File as the data sourceand i have a .mdf file for the database..when I click OK it says it couldn't login my computer account, i tried putting my login name and password, and it still didnt work.

View 1 Replies View Related

Can't Get Dubug To Work

Feb 8, 2010

A VB 2008 program that I am developing suddenly has a problem when trying to debug with breakpoints. I set a breakpoint, but the program does not stop there. A small yellow icon appears by the breakpoint bullet and says (when moving the cursor to it) "The breakpoint will not currently be hit. No symbols have been loaded for this document". Other applications debug ok with Visual Studio, so I suspect there is some setting for this one application that has gotten messed up.

View 3 Replies View Related

Can't Get FileSystemWatcher To Work

Apr 7, 2011

I can't seem to get a FileSystemWatcher to work, this is what I currently do.

Private Sub FileSystemWatcher1_Changed(sender As System.Object, e As System.IO.FileSystemEventArgs) Handles FileSystemWatcher1.Changed
MsgBox("Directory has changed")
End Sub

I have the filesystemwatcher path in my desktop. But when I create, re-name or delete something in the desktop it dosn't do anything, not even giving an error. I filter FileName, DirectoryName and LastWrite (the defaults).

The FileSystemWatcher have the EnableRaisingEvents set to true. So don't really know what the problem is.

I've tried google without any luck, all I found was people having problem that the FileSystemWatcher executed twice.

So do I have to do anything more on the code to get it to work?

View 1 Replies View Related

Copyrights 2005-15, All rights reserved