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
[code].....
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Feb 11, 2011
I have an installer, and it installs some native dll's along with the program.The dll's are in a separate folder, which I added to the path environment variable.That was done successfully, and the variable shows up in path if I check the windows system settings.
However, if I start the command line program/service, it says dll's not found...I check the environment variable path with the set command, and my folder is not in there.If I do
SET path = %path%;my/folder/here/
And start my program after that, then it works.According to this MS KB article this is because the computer would need to be restarted.unless I do
SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE, 0, (LPARAM) "Environment", SMTO_ABORTIFHUNG, 5000, &dwReturnValue);
Now I did just that, using the below code, but the error message persists. My folder in %path% is correctly spelled, I checked that.
' http://www.pinvoke.net/default.aspx/Enums/SendMessageTimeoutFlags.html '
<Flags()> _
Public Enum SendMessageTimeoutFlags
[code]....
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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?
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Mar 12, 2009
Is it possible to get information on the APIs in Vb.Net?
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Mar 17, 2011
To programming in Python, I was wondering if there is a way to access VB .net APIs using Python.
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Jul 27, 2009
Show the page where i can get all the APIs used in vb.net? Also i need a program to put my Vb.net program in the startup.
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Nov 25, 2009
APIs for Printer Page number
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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).
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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?
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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.
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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?
CODE:
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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.
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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...
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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.)
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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]
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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.
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Nov 17, 2010
I have read here [URL] that to instal .net 4.0 CP (client profile) you must have WinXP SP3 or above. This is somewhat worrying to me as there are many people on SP2 or below.Is there any way I can run a .Net 4.0 app on any version of Windows xp and above? (without worrying about which service packs they have)?If not, what about .NET 3.5, 3.0 or 2.0?how low do I need to go in my .net framework version choice to ensure compatibility for WinXP SP2 or above, ... How low do I need to go in my .net framework version choice to ensure compatibility for WinXP (no service packs) or above?
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Jun 2, 2010
If I'm running VB Express 2008, how do I choose what NET Framework I need the compiled EXE to be compatible with?
How do I do it in Visual Studio 2010?
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Oct 24, 2011
If something is written in VB is it compatible with android?If so, can you give me some documentation?
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Mar 6, 2012
I have several programs developed in visual studio 2010 (visual basic) working good in window 7 but not in xp, for example the sql connection is slow or the program cannot connect to the database. Also the webbrowser does not work 100%.
Is there some way to make compatible a program in xp??
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Aug 24, 2010
CODE:
Whats wrong with this code? There is no error. But nothing happens when exicuted.
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Mar 24, 2010
[code].....
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Aug 14, 2010
I'm trying to send some words to an application I'm running (exe file, no webpage). To do this I run my vb program and minimize it, so that the application I want to send the words to have focus.Now I've tried sendkeys, but it seems sendkeys only sends my first word and does nothing with the other words. The code below is called 4 times by the main form
If i > 3 Then i = 0
i = i + 1
If i = 1 Then verhaal ="some text 1"[code]....
but this throws in a overflowexception was unhandled error at the apiSendMessage(hWnd, WM_SETTEXT, 0, "Hello") line.I've tried several things but I can't figure it out how to send multiple words to the application without problems .
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Sep 26, 2011
I am using SendMessageTimeout to send messages (IPC) to talk between applications ... works fine in vb... but i am trying to build a vb.net implementation to talk between existing vb6 apps and .net ones...
So far i can successfully send data from vb.net to vb6 using:
vb
Dim b = System.Text.UnicodeEncoding.ASCII.GetBytes(Command)
Dim Data As New COPYDATASTRUCT
Data.dwData = New IntPtr
Data.cdData = UBound(b) + 1
[Code]...
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Aug 18, 2009
I want to develop a standalone app, but don't know what to use.Browed around but could.nt find anytinh worth while.standalone db an GUI Management software to use so that i can program using VB.NET and which ever provider. I need a freeware version so that i can have a test run first.
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Dec 15, 2011
I made a software that will run under .net framework 2, but it seems not compatible with aero, the background colour of the window will use the classic control colour instead of visual style background I chose after minimize and restore the window.
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May 23, 2009
I'm testing my 32-BIT application on windows XP Pro, and Windows Vista Home Premium, will there be any problem for my App to run on 64-BIT?
Also wondering, if my App has no bugs/problems with Home Premium (Vista) will anything on Ultimate (Vista) effect it? like Windows BitLocker Drive Protection? or anything like that?
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Mar 17, 2010
my OS is win 7 i am using visual basic 6.0 which version of crystal report could be use
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Feb 10, 2010
I want to test if the 2 objects values can be compared.
For example if I have a variable define as an object which contains a value of "A" and another variable defined as an object with a value of 0. (These must be defined as type Object.)
When I do a simple compare If Object1 <> Object2 Then etc. I get an error. So how do I test to see if the objects are comparable? I have looked at TryCast , DirectCast, Ctype etc but cannot see
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Jul 19, 2010
Is there a way to compile my application so it would be compatable with most OS?
When i compile my application, it runs fine on my computer but when i want to run it somewhere lese it asks for .net framework? My app is not even complicated and i wonder if there is a different way to compile it?
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