VB Forum / Win API / July 2005

I have a small sample function that should create a file and write a short
text into it using File I/O API.
The CreateFile works fine, the file is created and a handle is returned.
However, whenever I attempt to write to the file, the error "Invalid handle"

I want to change the devicename of a printer automatically with the
Windows-API. Is it possible to do this with the SetPrinter-function? I
tried this, but I always get "access denied".
Here is my code:

this is still with VB6.  I am writing an ActiveX control that needs to load
a bitmap file, and process it by reading the pixel colors (say, count the
number of black pixels).  I don't need to display the file at all.  In fact,
the control should really be invisible.  I found a ...

Probably been asked and answered a million times over the years, but I can't
find it anywhere:
From a VB6 program, how do I tell what the client is using for the Windows
directory (ie, C:\Windows or C:\Winnt or ......???)

How to find the relationship between a VB OCX and
a corresponding dll.
For Example:
When using a Rich TextBox in VB, the component is identified as:

Anyone know how to generate or get a log file when using Regsvr to
register an OCX in Win98?

Hello, how to copy Data(or pass it) to Data1? is it possible? Thanks.
==============================
Private Sub ListView1_OLEDragDrop(Data As MSComctlLib.DataObject, Effect As
Long, Button As Integer, Shift As Integer, x As Single, y As Single)

Hi, I have a ListView in Icon mode displaying 16 items.
I would like the user to be able to click (select) items without moving them
around.
Is there a way to prevent icon moving in an Icon mode Listview?

I have created a VB5 program that opens documents by calling the
shellexecute API. This works great.
I am looking for a corresponding API or other procedure that would allow me
to close the spawned process automatically from the VB program that opened

Hi, Im looking for a .dll that I can use to encrypt/decrypt on
public/private RSA keys.
The .dll should also be able to generate 128bit keys for inclusion in
programs, etc.

Is it possible to enumerate form elements in IE? I'm using VB6 and
have a very simple program that uses WindowFromPoint to display the
various windows, textboxes , etc when I put my cursor on them.  It
works great in just about any situation but I have found that it

Which is better used to store 2 or 3 simple program settings, an ini file, dat file or the
registry.
From reading posts here, it seems using the registry is frowned upon, but everything I
read

i want to be able to detect LAN cable status from my vb6 application so that
when the cable is unplugged, the user could be warned, is their any api that
can help me in implementing this functionality?
Thanks!

This question is more about the Win32 APIs than VB, but a search through the MS ngs didn't reveal a more suitable ng for this question.
Please tell me if you know of a better ng in which to post this.
I'm working on an app that allows the user to open a list of files.  The user can ...

How far back, OS wise, does gdi32.dll exist??
I found a great progress bar API that uses it, but I can't find any "history"
about it so I have an idea of what OS's will have it installed
As Always, tyia.