Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Press three keys together and trigger a function

Posted on 2016-10-12
3
Medium Priority
?
98 Views
Last Modified: 2016-10-12
Hello,

I want to combine three keys together CTRL + ALT + F12 and shoot a message with ShowMessage('OK')

how can I do this in my form?

Thanks
Alex
0
Comment
Question by:hidrau
3 Comments
 
LVL 23

Accepted Solution

by:
Ferruccio Accalai earned 1000 total points
ID: 41840137
procedure TForm1.FormKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
begin
If (key = vk_F12) and (ssCtrl in Shift) and (ssAlt in Shift) then ShowMessage('OK');
end;

Open in new window

0
 
LVL 38

Assisted Solution

by:Geert Gruwez
Geert Gruwez earned 1000 total points
ID: 41840678
that's assuming keypreview is true on your form ...

and some other app has not registered this shortcut key with windows RegisterHotKey
otherwise your app will not get the key

here is such an approach
http://www.delphitips.net/2007/04/01/global-system-hotkey/
0
 
LVL 1

Author Closing Comment

by:hidrau
ID: 41840768
thanks a lot
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

Objective: - This article will help user in how to convert their numeric value become words. How to use 1. You can copy this code in your Unit as function 2. than you can perform your function by type this code The Code   (CODE) The Im…
In my programming career I have only very rarely run into situations where operator overloading would be of any use in my work.  Normally those situations involved math with either overly large numbers (hundreds of thousands of digits or accuracy re…
This video shows how to quickly and easily deploy an email signature for all users in Office 365 and prevent it from being added to replies and forwards. (the resulting signature is applied on the server level in Exchange Online) The email signat…
Loops Section Overview
Suggested Courses

916 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