How to send an “ENTER” key press to another application?

Question

I have code that launches an external application and automatically fills in a password prompt.

I want to automate the pressing of the \"ENTER\" key, so that the use

Answer 1

Try #13#10 instead of just #13.

Answer 2

Try this

PostMessage(AppHandle, WM_KEYDOWN, VK_RETURN, 0);

Bye.

Answer 3

There are a couple of different ways that you can do what you want.

The first and easiest to detail is the SendKey32.pas file. This unit was specifically written to allow you to do just what your asking. This delphi.about.com article gives a good explanation about the unit and what it can do.

I've personally started using a different method because of some limitations I found in the SendKey32 stuff. The second method is Journal Playback messages. This is a type of Windows System Hook that allows you to send (keystroke) messages to the O/S and have it deal with all of the little fiddly stuff.

There is a unit I found online called hkSend.pas that has all of the necessary plumbing all setup into a single function call (SendKeys).

If you do a Google for it and look at the first couple of entries you'll find a copy of the .pas file and you can see what's involved. The person who wrote hkSend appears to have made it work in a similar fashion to SendKey32.pas but using Journal Playback instead.

HTH,

Ryan.

Answer 4

Quick answer. Duplicate your final SendMessage call using the WM_KEYUP event. Some systems only trigger when the key is released not when it is pushed.

Something to try until the real programmers respond. (:-)