Solved

Sending keystrokes to a shelled APP

Posted on 1998-12-13
1
146 Views
Last Modified: 2010-05-03
I am trying to shell an application then send key strokes to it. The problem is, I try to shell it so it is openned minimized with focus. And then when I use the send key funtion, it doesn't work.
0
Comment
Question by:mjh2
1 Comment
 
LVL 12

Accepted Solution

by:
mark2150 earned 70 total points
ID: 1449848
You need to open it maximized or normal with focus. Also use an AppActivate just prior to sending it keys and put a DoEvents before and after the SendKeys command. Here is the routine I use to drive external programs with good success:

Public retval As Double     'Spawned child ID

' Launch child task, gotta be visible!

retval = Shell(ChildTaskPath, vbMaximizedFocus)

' Sample call to child task

sendit ("%FO" & FileName & "{enter}")
Call delay(3)

' Subroutine that sends data to child task

Private Sub sendit(txt As String)
'
' Send string to child task
'
    On Error Resume Next
    AppActivate retval      'Make sure child task is active
    DoEvents                'Give it a shot to run
    SendKeys txt, True      'Tell it what to do and wait
    DoEvents                'Cede some more time
'
End Sub

' Delay loop to give child app time to breathe

Private Sub delay(secs As Integer)
'
' Sanity check passed param
'
secs = Abs(secs)
If secs > 100 Then secs = 100
'
' Pass delay value and diddle here until time expires
'
etime = Timer + secs
Do While Timer < etime
    DoEvents
Loop
'
End Sub

0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Put text in a picture ASP.NET C# 2 60
message box in access 4 51
Getting warning: You are about to delete 1 row(s) 9 52
Spell Check in VB6 13 126
I’ve seen a number of people looking for examples of how to access web services from VB6.  I’ve been using a test harness I built in VB6 (using many resources I found online) that I use for small projects to work out how to communicate with web serv…
Introduction In a recent article (http://www.experts-exchange.com/A_7811-A-Better-Concatenate-Function.html) for the Excel community, I showed an improved version of the Excel Concatenate() function.  While writing that article I realized that no o…
As developers, we are not limited to the functions provided by the VBA language. In addition, we can call the functions that are part of the Windows operating system. These functions are part of the Windows API (Application Programming Interface). U…
Show developers how to use a criteria form to limit the data that appears on an Access report. It is a common requirement that users can specify the criteria for a report at runtime. The easiest way to accomplish this is using a criteria form that a…

790 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question