VB Forum / Win API / April 2005

I writing a code to read two jpeg files, compare them and return a 3rd jpeg
file with differences and the percentage of differences.
I read both files and get diffs from byte 0 to len of the shortest one to
generate the 3rd file, but it is not working at all, when I tried to open ...

How can i perform automation for PDF files ?
likes converting docs to PDF file & inserting page into PDF files.
(assume i have full version of Adobe Acrobat)

I am using VB6 enterprise  and some API functions. While testing some
programs that use API's I have had to reboot windows a few times. All these
functions work correctly in my programs.
I have used BitBlt, SelectObject,Loadimage, CreateComapatibleBitmap,

I writing a code to read two jpeg files, compare them and return a 3rd jpeg
file with differences and the percentage of differences.
I read both files and get diffs from byte 0 to len of the shortest one to
generate the 3rd file, but it is not working at all, when I tried to open ...

This is more of a delphi question for anyone who uses it, but it's also
related to vb. I'm pretty new to Delphi and I'm trying to figure out how
to copy a image I have in a TBitmap into a vb StdPicture object. Is this
possible?

How can I interrupt a task that is running? Thanks in advance

I've created a module to add a system tray icon. It all works correctly
except for one thing. The icon is added as follows:
Register a WNDCLASS with .lpfnwndproc = ... 'AddressOf callback routine
(this is used to create a window class, so I have an independent handle for

 In my application I am using apiCopyFile to copy files from local machine
to a remote server.  An example of the syntax is as under:
Function fnciFileCopy(ByVal infile As String, ByVal outfile As String) As
Integer

Good day all
Can anyone give me the Visual Basic declare for LOCALE_SYSTEM_DEFAULT
(GetLocale win API)
Thanks in advance

I'm using a WindowProc to detect for the mouse wheel and other mouse events.
Is there a way to detect when the mouse has STOPPED moving? There is
WM_LBUTTONDOWN and WM_LBUTTONUP but I can't find an opposite to
WM_MOUSEMOVE.

I've got a usercontrol and need to subclass UM_STARTDRAG so that I can call
the usercontrol.oledrag method. I've got it subclassed and everything, but
the message simply doesn't arrive.
These are the constants:

For console program like:(i.e. is a C app., but the Red. nedeed in VB6)
C:\>MyType.exe Test.txt
-- which displays containt of the file in STDOUT.
I can use following steps for reidirection:

How do I run 'IPConfig /all' Programmatically? I'm interested in capturing
all IP and MAC addresses which are active on the local machine. For example,
see the output from IPConfig below. As you can see there are multiple IP
addresses (some physical, some emulated) which are ...

I am designing an application that processes the UDP packets and display the
processing details on a GUI (Windows Form).
The packets that I recieve rquire high processing and I can not miss the UDP
packets. After doing the processing I have to update/display the results on

Has anyone here had any success with this API? I can't get it to draw, even
though it returns success. I can draw a theme background with
DrawThemeBackground (thanks to vbAccelerator), so I assume I have a valid theme
handle.