How many keystrokes can I send per second with 'Sendkeys' statements assuming
tab keys and text are mixed?

Many, many strokes.

The keystrokes are buffered until control returns to the application, either
directly or thru DoEvents
--
Gary''s Student - gsnu200811


"Zakynthos" wrote:

How many keystrokes can I send per second with 'Sendkeys' statements assuming
tab keys and text are mixed?

Thanks for that.

But what's the maximum, precisely, per second?

"Gary''s Student" wrote:

Many, many strokes.

The keystrokes are buffered until control returns to the application, either
directly or thru DoEvents
--
Gary''s Student - gsnu200811


"Zakynthos" wrote:

How many keystrokes can I send per second with 'Sendkeys' statements assuming
tab keys and text are mixed?

Check back tomorrow.

I'll cook up a little macro to measure system, SendKeys about 10,000
character, and measure time again.

This will give us enough information to calculate the number of characters
per second.
--
Gary''s Student - gsnu200812


"Zakynthos" wrote:

Thanks for that.

But what's the maximum, precisely, per second?

"Gary''s Student" wrote:

Many, many strokes.

The keystrokes are buffered until control returns to the application, either
directly or thru DoEvents
--
Gary''s Student - gsnu200811


"Zakynthos" wrote:

How many keystrokes can I send per second with 'Sendkeys' statements assuming
tab keys and text are mixed?

Great - many thanks for your help. I'm trying to convince people at work
that lots of time will be sent in a data transfer project from one database
to another and this information will prove useful to support my arguments -
I'm also running timed tests of my program against manual input but don't
have the knowledge to time the max. keystroke output in seconds.

"Gary''s Student" wrote:

Check back tomorrow.

I'll cook up a little macro to measure system, SendKeys about 10,000
character, and measure time again.

This will give us enough information to calculate the number of characters
per second.
--
Gary''s Student - gsnu200812


"Zakynthos" wrote:

Thanks for that.

But what's the maximum, precisely, per second?

"Gary''s Student" wrote:

Many, many strokes.

The keystrokes are buffered until control returns to the application, either
directly or thru DoEvents
--
Gary''s Student - gsnu200811


"Zakynthos" wrote:

How many keystrokes can I send per second with 'Sendkeys' statements assuming
tab keys and text are mixed?

It is important to remember that a human is very limited in the ability to
type quickly. The standard QWERTY keyboard was designed to slow down typing,
not speed it up.

Even if you just hold a key down, the thruput is limited by the repeat rate.

We will see if SendKeys can do better!
--
Gary''s Student - gsnu200812


"Zakynthos" wrote:

Great - many thanks for your help. I'm trying to convince people at work
that lots of time will be sent in a data transfer project from one database
to another and this information will prove useful to support my arguments -
I'm also running timed tests of my program against manual input but don't
have the knowledge to time the max. keystroke output in seconds.

"Gary''s Student" wrote:

Check back tomorrow.

I'll cook up a little macro to measure system, SendKeys about 10,000
character, and measure time again.

This will give us enough information to calculate the number of characters
per second.
--
Gary''s Student - gsnu200812


"Zakynthos" wrote:

Thanks for that.

But what's the maximum, precisely, per second?

"Gary''s Student" wrote:

Many, many strokes.

The keystrokes are buffered until control returns to the application, either
directly or thru DoEvents
--
Gary''s Student - gsnu200811


"Zakynthos" wrote:

How many keystrokes can I send per second with 'Sendkeys' statements assuming
tab keys and text are mixed?

First the code:

Private Declare Function GetTickCount Lib "Kernel32" () As Long
Sub qwerty()
Dim ary(1 To 1350) As String
Dim n1 As Long, n2 As Long
For i = 1 To 1350
ary(i) = Chr(Int(((90 - 65 + 1) * Rnd) + 65))
Next
Application.ScreenUpdating = False
Range("B9").Select
ActiveCell.Clear
n1 = GetTickCount()
Application.SendKeys "{F2}"
For i = 1 To 1350
Application.SendKeys ary(i)
Next
Application.SendKeys "{ENTER}"
DoEvents
Application.ScreenUpdating = True
n2 = GetTickCount()
MsgBox (n2 - n1)
End Sub

So we make a long array of characters, record time, pump the characters into
a cell, re-record the time, and display the difference.

On my elderly Dell, I am able to get 1350 characters into a cell in about
950 milliseconds. And thats sending them one character at a time.
--
Gary''s Student - gsnu200812


"Zakynthos" wrote:

Great - many thanks for your help. I'm trying to convince people at work
that lots of time will be sent in a data transfer project from one database
to another and this information will prove useful to support my arguments -
I'm also running timed tests of my program against manual input but don't
have the knowledge to time the max. keystroke output in seconds.

"Gary''s Student" wrote:

Check back tomorrow.

I'll cook up a little macro to measure system, SendKeys about 10,000
character, and measure time again.

This will give us enough information to calculate the number of characters
per second.
--
Gary''s Student - gsnu200812


"Zakynthos" wrote:

Thanks for that.

But what's the maximum, precisely, per second?

"Gary''s Student" wrote:

Many, many strokes.

The keystrokes are buffered until control returns to the application, either
directly or thru DoEvents
--
Gary''s Student - gsnu200811


"Zakynthos" wrote:

How many keystrokes can I send per second with 'Sendkeys' statements assuming
tab keys and text are mixed?