Solved

How to write some codes for Right Clicking mouse?

Posted on 2001-08-24
5
154 Views
Last Modified: 2010-04-06
Hi, experts:

Can anyone solve the problem?

I must use mousedown to allocate clicking position(leftclick) on a label. How can I use mouse rightclick on the label to show a message?

thanks a lot!

John
0
Comment
Question by:jl2001
[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
5 Comments
 
LVL 1

Expert Comment

by:sundayboys
ID: 6424078
Use OnContextPopup event.like this:
procedure TForm1.Label1ContextPopup(Sender: TObject; MousePos: TPoint;
  var Handled: Boolean);
begin
   showmessage('ok');
end;
0
 
LVL 34

Accepted Solution

by:
Slick812 earned 50 total points
ID: 6424208
hello jl2001, the mouse down event has a "Button" property that you can use to determine which mouse button was used with mbLeft, mbRight and mbMiddle

Form1.Label1.MouseDown(Sender,Button,Shift,X, Y);
begin
if Button = mbRight then ShowMessage('Right Mouse button was down') else
if Button = mbLeft then ShowMessage('Left Mouse button was down');
end;
0
 
LVL 3

Expert Comment

by:rondi
ID: 6424546
var
  clickpos:TPoint;

procedure TForm.Label1MouseUp(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y:integer);
const
  RADIUS = 4;
begin
  if Button = mbRight then
  begin
    clickpos.X := X;
    clickpos.Y := Y;
    ShowMessage('The new click position is X:' + IntToStr(X) + ' Y:' + IntToStr(Y));
  end
  else if Button = mbLeft then
  begin
    if (X >= clickpos.X - RADIUS) and (X <= clickpos.X + RADIUS) and (Y >= clickpos.Y - RADIUS) and (Y <= clickpos.Y + RADIUS) then
      ShowMessage('CLICKED !!');
  end;
end;
0
 

Author Comment

by:jl2001
ID: 6425449
simple, straight forward and no bugs
0
 

Author Comment

by:jl2001
ID: 6425454
Thanks a lot, guys.
0

Featured Post

On Demand Webinar - Networking for the Cloud Era

This webinar discusses:
-Common barriers companies experience when moving to the cloud
-How SD-WAN changes the way we look at networks
-Best practices customers should employ moving forward with cloud migration
-What happens behind the scenes of SteelConnect’s one-click button

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
select query - oracle 16 101
tvirtualstringtree freeze when load too manny images 10 81
JAudiorecorder record freezing the app 29 83
Delphi: barcode reading on android platform 1 76
This article explains how to create forms/units independent of other forms/units object names in a delphi project. Have you ever created a form for user input in a Delphi project and then had the need to have that same form in a other Delphi proj…
Have you ever had your Delphi form/application just hanging while waiting for data to load? This is the article to read if you want to learn some things about adding threads for data loading in the background. First, I'll setup a general applica…

726 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