Solved

Sending keystrokes to a shelled APP

Posted on 1998-12-13
1
150 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
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
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

Online Training Solution

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action. Forget about retraining and skyrocket knowledge retention rates.

Question has a verified solution.

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

Most everyone who has done any programming in VB6 knows that you can do something in code like Debug.Print MyVar and that when the program runs from the IDE, the value of MyVar will be displayed in the Immediate Window. Less well known is Debug.Asse…
This article describes how to use a set of graphical playing cards to create a Draw Poker game in Excel or VB6.
Get people started with the process of using Access VBA to control Outlook using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Microsoft Outlook. Using automation, an Access applic…
Get people started with the process of using Access VBA to control Excel using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Excel. Using automation, an Access application can laun…

724 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