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Talk To USB Device Using Windows API


Hi,

i want to send data to a USB Device(not HID). i want to make this application in visual basic. i dont know what windows APIs should be used and where is it?

could you help me?
Thanks




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I need two things for a program I'd like to write (mybe only one). What I want to do is have a hot-key that will stop/play WMP(9 series). I've got the hotkey thing worked out, but what I need to do is somehow tell WMP to Stop or Play (not Pause/play!). What code could I use to do this? I either need a) a way to actually 'talk' to WMP directly and 'tell' it to stop/play, or b) a way to simulate a key press system wide BUT, if I use option 2, I'm not sure what the ASCII of the stop/play key is that WMP responds to. Can anyone help?

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Hoe To Open Windows Explorer, In The MObile Device Folder
Hello: I normally use code as follows to open windows explorer in a particular folder

Code:hndl = Shell(Environ("windir") + "explorer.exe c:" ) (This would open explorer in the C: folder)


Does anyone know how to open explorer and point it to a connected pocket pc?? I thought it might be

Code:hndl = Shell(Environ("windir") + "explorer.exe Mobile Device" ) But this raises a 'folder not found' error


any help much appreciated.
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Icarusbop

Installed And RunAs Admin:Windows Cannot Access The Specified Device, Path, Or File.
I am getting an error message in one of the Apps I wrote. I was wondering what some possible causes and solutions could be? Thanks.


OS: WinXP
I am getting this message even though I installed and ran as admin:

Quote:




C:Documents and SettingsAdministratorDesktopofficeBar.exe
Windows cannot access the specified device, path, or file. You may not have the appropiate permissions to access the item.




Possible solutions:
http://www.ingmar.dk/cgi-bin/aforum.isa?zaq=21rav1559a

Solution: This error message may sound severe, but it’s really a fairly minor issue. Select multiple icons on the Desktop, including Internet Explorer, and then press the ENTER key on your keyboard, and you’ll likely run into this error message. To avoid seeing this error message (you guessed it), don’t select multiple icons on the Desktop, including IE, and then press ENTER.

scanreg /restore

Answer.
Under recent Windows XP patches (called Service Pack 2 or SP2) there is
an "unblock" setting that you must provide when you transfer a executable
file from one computer to another. Until you "unblock" the file,
you will get the message

"Windows cannot access the specified device, path, or file. You may not have
the appropriate permissions to access the item."

Fix: to fix this,
1) right click on the file and select "Properties"
2) click the "Unblock" button.

Getting Device List From Device Manager With Setupapi
I had need to figure out which COM port a USB-serial converter was installed as. If you looked under Device Manager, it was easy to tell from the names. First I tried EnumPorts, but that just gave me the COM number and 'Local Port'. I tried using the WMI, but the device I was looking for was the one that it wouldn't list for some reason. (Worked fine for my other virtual COM port USB device.) So I stumbled onto the setupapi library, but there was no VB examples, only some C. So through some trial and error, I devised a DeviceLister VB6 class to get names and descriptions of devices. It could be changed to include more, but I stopped at names/descriptions.

By five-cent example returns a list of 'Ports' devices (your results will vary):
ECP Printer Port (LPT1)
Communications Port (COM1)
Digi PKG-U Serial Port Adapter (COM16)
^-that last one was the sucker I was after

I thought 'Hey I wonder if anyone else would be looking for this?' so I post it here. It's not the prettiest implementation, but might be a starting point for someone.

Note: The MSDN seems to indicate that this only works for Win2k and beyond.

EDIT: I added an example of retrieving all devices. Also I setup an option to list devices that are not present. Now I can see ports that were installed but aren't active.




Edited by - FD 80 on 6/20/2008 11:35:57 AM

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Talk To Me!!!!
hi guys,

Can someone guide me how to accept user input (voice input )

I wanna make my applications user friendly.

So the first step is to understand what the user speaks.
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Thanks .

How To Talk With Another Exe???
Hi All,


How to check whether an application is already in a running state or not.

Thanks & Regards,
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How To Talk With Another Exe???
Hi All,


How to check whether an application is already in a running state or not.

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VB6 Talk To DOS EXE
I have a problem talking to a dos shell exe.

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I need a way to pass string data between the two programs. I know how to subclass the VB window, but I don't think you can pass strings between the programs with messages since they are in different threads.

It'd be great if I could use COM to expose some custom interface for the communication, but as I understand it there's no way for a C++ program to access a VB activex .exe, and the VB activex .dll can only have a modal dialog.

Finally, I wonder if I can pass another instantiated COM object which is owned by the C++ program to the VB program so the VB program can "share" it with the C++ program.

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Thanks,

Bruce

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Hai,
who do i get the Google Talk Contact list count in the main window named "Google Talk"

I tried with SendMessage, my code works well with ListView controls, but doest not work with Google Talk List View.


Code:
Option Explicit

Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long

Private Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hWnd1 As Long, ByVal hWnd2 As Long, ByVal lpsz1 As String, ByVal lpsz2 As String) As Long
Private Declare Function GetClassName Lib "user32" Alias "GetClassNameA" (ByVal hwnd As Long, ByVal lpClassName As String, ByVal nMaxCount As Long) As Long

Private Const LVM_FIRST = &H1000
Private Const LVM_GETITEMCOUNT = (LVM_FIRST + 4)

Private Sub Command1_Click()
Dim wnd As Long
Dim chwnd As Long
Dim cchwnd As Long
Dim itcount As Long


wnd = FindWindow("Google Talk - Google Xmpp Client GUI Window", vbNullString)
chwnd = FindWindowEx(wnd, 0&, "Main View", vbNullString)
cchwnd = FindWindowEx(chwnd, 0&, "Contact List View", vbNullString)
itcount = SendMessage(cchwnd, LVM_GETITEMCOUNT, 0, 0)
MsgBox itcount

End Sub

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I am trying to write a program that will add a new contact to our master database and enter some data into some specific fields. I have written programs that talk to DocuWare, SQL, Access, and Oracle databases, and I'm wondering if there is anything different about talking to an ACT! database.

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/<evin

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hi ppl
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Is it possible to create a visual basic program that talks to MSDOS.

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HI

in 1 dll i open a connection and a recordset to a database which the user determine, lets say "test".
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HI

i made 1 dll with functions/procedures that connect me to a DB
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now i want to make another dll which is a class of a cabinet (for example)
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Hi,

I am currently making a server system which is 5 servers (web, mail etc) all in one app, yet if one server crashes then they all do which is, quite frankly, very poor. So, how can i make my applications talk to each other (they are on the same pc) ?, is it possible (i think so) to set the text in a textbox of another application (i could do it this way ?)

Any Ideas ? Any help ?

Many thanks.

Talk To Me And Reach Out
I'm working in a big Internet Cafe almost 4 years. Now I
hate to check its computer whether they are accessing internet or not . Now if one user want to do other things and he/she can automatically disconnect the internet or i say he/she click the button to disconnect internet. Sample,
a "first computer" is a server and attached with the modem and also a Proxy server using socks firewall.
and it is connected to the internet. The "Other Computer" is in Lan Network and connected to the "First Server" in order to access internet. Now one of the computer disconnected to the internet access but the "Other computer" will still accessing internet and the "FIrst server" still connected to the net

Talk to me....

Ok Lets Talk Pacman
lets ask how to tell the computrer that when you press the up arrow you move up

WinSock - Straight Talk
Can someone tell me if WinSock is usable within VBA (specifically Excel)?

I've seen tid bits here and there suggesting that you need VB in order to use the Winsock API's, that it can only be used in forms, etc. Fyi, I downloaded the modWinSock.bas available that this site and all I get when executing gethostbyname is 0.

Thanks for any comments!

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Hello,

I have no idea what I am doing in COM.

I have tried example after example and reading whatever I could find,
but I seem to be missing something fundamental.

I need to capture certain information from DXF files and send it to a
C executable (WinCad) so that the WinCad will create a list of parts
to be made by a machine we use here. Right now this process is done
by hand.

WinCad is a program written by the manufacturer of the machine, I have
no source code for it.

It appears, to me, that all I need to do is reference WinCad, then
write the code to talk to it. It seems that I am wrong about this.

I am getting the error "Function or interface marked as restricted, or
the function uses an Automation type not supported in Visual Basic."

I know that WinCad can be used that way I am trying to use it. When I
asked if this could be done I was sent VC6.0 source code which, when
complied, uses WinCad to create parts.

I know next to nothing about C. It took me several attempts just to
get the workspace open.

My reference to WinCad was added by Browsing in References to a
TypeLibrary I generated (using the IDL I included below). The
reference does point to the proper file/location. The IDL was created
by copying what I saw in WinCad.exe in the OLEViewer.

Any and all assistance would be GREATLY appreciated - I have been on
this project WAY too long!


My code is run by clicking a button in a form, all I have is the
following:


Code:
Option Explicit

Private Sub cmdRun_Click()
Dim objWinCadServer As PartDoc
Set objWinCadServer = New PartDoc

Dim objParts As Long
Set objParts = objWinCadServer.SetPartData("TestJob", _
"Testgrp", "DelMe", 5, 105.2, "", "", "", _
"FB", 386, "", "", 0, 0) 'As Long
End Sub

From the Object Browser:
-----------------------------------------------------------------------------
| WinCad
|
|----------------------------------------------------------------------------
| Classes: | Members of 'PartDoc'
| <globals> | =\ GetSpecification
| MultDoc | =\ RefPlane
| PartDoc | ...
| ShapeDoc | =\ SetPartData
| WincadProxy | ...
|-----------------------------------------------------------------------------
| Function SetPartData(strJobid As String, strGroup As String,
| strMark As String, iQuanity As Integer, dLength As Double,
| strDesctp As String, strDesc As String, strGrade As String,
| strFabcode As String, bMeasureWebDepth As Long,
| strRemarka As String, strRemarkb As String,
| nMeasureSystem As Integer, iChannelLeg As Integer) As Long
| Member of WinCad.PartDoc
|____________________________________________________

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Hiya...

I'm trying to make one of my visual basic programs talk to another one, but I've got no idea how.

Program 1 has two variables, say $blah and $blah2.... and I want to pull these into Program 2. When this happens, is there some kind of event that can be called (so a bunch of commands can be ran?)

Ideas suggested to me were DDE, local winsockets, COM automation. I'm not sure how I can achieve what I want with either - I'm usually a unix developer, not a windows one.

Please help! (sample code would be awesome)

L

Can An Excel Macro Talk To IE?
I am required to have fields on a web app populated when certain fields of an excel macro are selected.

Is it possible to target Fields of an HTML form from a macro or any VB app?

Cheers,
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Make Vb Talk To MSWord
I really am really really stuck.

I have a form in word with which I need to update with data through my application either with bookmarks or with text form fields.

I have tried a few things but cant get any to work for me.

Please help I dont have a lot of hair left!



---
Thank-you
K Black

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Make any sense? Hope someone can point me towards some information.

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NOOB- Need To Talk To ISA Bus Card Through VB^
Hello,

I am a poor underfunded graduate student who has been given a MiniBird II ISA bus card that performs magnetic 3-D tracking of a sensor. I have the manual with the necessary commands to control the card, however, I have no clue as to how to get those commands to the card through VB6. I simply want to send a hex or binary value to a specific base address, and then read data back from that address. The company that makes the card has written no working DLL or OCX that can do translations for me. They provide no compatible driver for this card in the ISA bus, but I dont think you need a driver to talk to the card through ISA.

How do I communicate to an ISA BUS?

Please any suggestions would be appreciated, but be aware that I am not an expert programmer, so dumb it down for me. thanks

Can I Make My Program Talk ?
hi
i want my program Pronounce the numbers in textbox or combobox or any control.
is there a control for that or a normal code or api functions or anything ?

Talk To Comm Port
How i want to send a signal to Comm port no 3 if any condition occur in my system..i want to control a gate in cassete conveyor..the gate will connect using comm port 3..then if error occur in mysytem..the gate is will not open..
how to send a signal?
what kind is better signal to send? (0/1, TRUE/FALSE OR OTHERS)

H4x0r Talk Program
enjoy

http://66.57.155.157/h4x0r.zip

How To Make Two Applictions Talk?
Is there anyway to send a message from one application to another. In particular, I want one program to send a message to another to let the second application know where the first is in processing.

Does this make sense????

How Can I Talk To Stored Procedures?
HI

if i want a simple select i open a connection and a recordset and execute the sql
but if i want to activate a stored procedure of an oracle database with parameters, how do i do that ?

Talk About A Newbie Question..
I don't believe I'm asking this (been doing vb for over a year now), but is there a way to change the forecolor/fontcolor on a command button? I seem to remember being able to do this a while aog, but I can't find it now?

------------------
(¯`·.¸¸.·´¯`·-&gt;ShadowCrawler&lt;-·´¯`·.¸¸.·´¯)
Teenage Programmer
Visual Basic, HTML, C++, JavaScript
http://welcome.to/X12Tech
Email: craigkovatch@compuserve.com
ICQ#: 9872708

Hey I Need A Coding Buddy To Talk To
I would really appreciate if anyone is willing to have a coding buddy, someone that I can ask question or need help with vb6 if I need it or someone that can tell me if I can make the code more efficient..well thanks , don't know any one else so I guess I ask here..prefereably on MSN or AIM.

How To Talk To Multiple Forms? VB6
Hi everyone.
Can someone help me out? I'm a newbie trying to write a simple app with multiple forms (not MDI) but I can't seem to call a sub procedure from one form to the other. I don't really know what to do because I'm just learning.

If someone can help me, I'd really appreciate it,
Jon

How Can I Talk To 802.11g Wireless Port Using VB6.0
dear all

how can i talk to 802.11g wireless port using VB6.0
regards
murli c
www.opulance.co.in

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