Simulating keystrokes to a MS-DOS window

Posted on 2000-03-21
Last Modified: 2010-04-04
I would like to send keys to an MS-DOS window, truely simulating the action of a user on the window.
I've tried with Keybd_event but it doesn't work (it works with standard windows).


Alexandre Guillien
Question by:AGuillien
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LVL 13

Expert Comment

ID: 2640143
I think you need to send messages to the window handle:

SendMessage(hwnd, WM_KEYDOWN, nVirtKey, lKeyData);


SendMessage(hwnd, WM_KEYUP, nVirtKey, lKeyData);
LVL 13

Expert Comment

ID: 2640152

Expert Comment

ID: 2640154
Hi Alexandre

This might not be what you want but take a look at:

it's supposed to take keystrokes from a supplied text file.

Cheers - Walter McKie

Expert Comment

ID: 2643464
Using Keybd_event will work on a DOS window if you use AttachThreadInput as well. The problem is with some MS-DOS apps that sending Windows messages won't work.

I think the main reason is the vast number of "ill-behaved" MS-DOS apps made in the 80's. A lot of programmers (and programming tools) used BIOS calls to read keystrokes to get complete control over the keyboard. I don't think you can synthesize keystokes for this kind of apps using Windows calls - you'll have to generate BIOS "messages". This shouldn't be too much trouble provided you can find the documentation...

If all else fails - follow this tip.

LVL 13

Accepted Solution

Epsylon earned 200 total points
ID: 2654915

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