VB Forum / General 2 / August 2007

This is in VB6.
Let's say an API call sends me a hWnd to some VB form, and I want to
"set" a VB form variable to that hWnd
Something like:

I'm using the code below to check for a field value and if it's blank
I want to exit the sub and close the form.  This is the code I'm
using:
 If (InvoiceForm.ResID <> "") Then

I hate Collections in VB6 with a passion.
I've found them just about OK and maybe interesting for little things,
but not very scalable and incredibly inefficient compared to even the
most inefficient linearly stored array.

I wrote some code to send an email with two alternate views:
1) html
2) plain text
All the html enabled email clients accept the html just fine and disregard

I'm trying to get my program to create a webpage by writing html to a text
file with teh htm extension.
Alright in theory but very complex in practice because of the the numerous
double quoted parameters (works if converted to single quotes) and the

Tonight when I tried to run a VB5 program that I am developing, which
had up to now not had any problems printing to the printer, I ran into
a problem that "froze" my program.
The common dialog box for the printers opened as normal, but when I

Assume I have a sub A that calls subB:
sub A()
on error goto errorHandle
'do something

Is there a way to know (and report in an error handler) exactly which
line caused the error?
So far I've been able to retrieve the error number and error
description form the Err object, butis it possible to retrieve the

the instruction file.create(path) never frees the ressource!!!
if you try
file create("c:\temp\ok.txt")
file.delete("c:\temp\ok.txt")

I am attempting to send RS232 Data from COM1 using the MSCOMM Control.
The RS232 Cable from COM1 feeds a MAX232. I am monitoring the associated
TTL output from the MAX232 with a Storage Scope.
When I Click on the Command2 Button to Send, all that happens is

Where should I save files in Vista? So far I had been using the
application directory, but I guess that's over.
Regards,
Fernando

I'm writing a program that uses the Beep command when an alarm condition is
met. And need to produce 4 Beeps with 750ms in between...
Is there another way to produce this same effect without using the Sleep
command? It polls sensors every 500ms and IIRC the sleep command will

I'm using VB6 (still).  I have a USB device that works fine if it is
plugged in before starting VB6.  I need it to work if it is plugged in
before or after VB6 is already running.  This requires dynamically
loading the dll functions.  I called the LoadLibrary and

Please start Visual Basic (Standard EXE) and press F5. You see an
empty form.
1) Press and hold 'CTRL' + 'A' and then press 'F1'. You shouldn't hear
any beep. I think that's normal.