VB Forum / Win API / July 2005

I have an VB6 application which makes intensive use of Sendkeys. Sometimes
when a long string (filenames including pathname) is sent I found that often
one of the backslash characters is changed to its correspondent 'non Alt Gr'
character (which is 'ß' on my German keyboard, ...

Hello newsgroup,
I got to this group from the public German Excel group, where my
question could not be answered. I hope this is the correct place.
This is the situation:

What is the best way to "null" a string variable in VB that removes
it from memory until called again.
I've read:
vbNullString, which if I understand correctly just creates a zero length string

I can use EnumFontFamilies with the callback function to get the names of
the fonts that a .DC has and EnumFontFamProc will tell me if that font is a
truetype font, so I can assume a set of common sizes.
However, for non TrueType, which element of the NEWTEXTMETRIC structure

Hello newsgroup,
I got to this group from the public German Excel group, where my
question could not be answered. I hope this is the correct place.
This is the situation:

I've created the below function that calls the RegQueryValueEx
function.
This runs fine the first time it is called but no the second run it
crashes the application every time on this line

I have encountered a strange problem that I can't work out. I have a VB6
application that uses MAPI to generate emails which are sent via a GroupWise
client. The problem is that when an attachment is included with the email
the entire email, complete with it's attachment is sent ...

hi friends,
Firstly, sorry for my english.
I need help!! I must make a Visual Basic applications for read a USB
printer, I know do it for serial or paralel but no for USB.

Do you have any good references for sample code? - I am now having problems
keeping the scaling of the transparency to calculate correctly as the
underlying images are different sizes but printed to a fixed size - this
size is calculated using teh printer resolution, which ...

I need to capture a specific event on windows, so i use a timer with
very low interval - 30.
of course this causes old computers to be very slow and in some cases
"skip" on the event.

I'd like to display the current value of the progressbar horizontally
centered over the graphical progress indicator. Is this possible?
TIA,
Mike

I have been trying to print an image (jpg) on top of another but with
transparency to a scaled size.
i have tried using TransparentBlt and altghough this works on a form, I
cannot get it to work on a printer hdc.

I have been trying to print an image (jpg) on top of another but with
transparency to a scaled size.
i have tried using TransparentBlt and altghough this works on a form, I
cannot get it to work on a printer hdc.

We are using EnumDisplaysettings and Changedisplaysettings to modify the systems setting where our application runs.  However we
have discovered on some systems the devmode structure returned from EnumDisplaySettings will rotate the display 180 degrees.
Everything is upside down. ...

I'm really thankful to you people for the help. I've done the thing as per
your suggestions.
It was a problem of Event Source name what we register, i.e. create entries
in registry