Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

OnMoveMove Event

Posted on 1998-12-18
7
Medium Priority
?
287 Views
Last Modified: 2012-05-04
Hi

My problem is quite straight forward. I have got 2 edit boxes. if the mouse is over edit1, then it will make edit2 go RED, else it will make edit2 go WHITE.

I have used the OnMouseMove event of edit1 and make edit2 RED. All OK. then, I have used the OnMouseMove event of the form to set the edit2 to WHITE. All OK

Now, if i place edit1, close to the edge of the form, and move my mouse fast enough out of the form, edit2 remains RED, because the move movement was to fast to go through the OnMouseMove event of the form.

How do i overcome this? any better ideas anyone?

Regards
Keith
0
Comment
Question by:keithcsl
[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
  • 4
  • 2
7 Comments
 
LVL 3

Expert Comment

by:Matvey
ID: 1351777
Yes, there is a better method. There are events called CM_MOUSEENTER and CM_MOUSELEAVE. They aren't implemented in all controls, but we can make a "remix" of the edit, and use it insted. If I don't come back in 10 minutes, DIY ;-)
0
 
LVL 8

Expert Comment

by:ZifNab
ID: 1351778
Hi keithcsl,

a very easy solution is :

procedure TForm1.Edit1MouseMove(Sender: TObject; Shift: TShiftState; X,
  Y: Integer);
begin
 if (X = 0) or (X=(Sender as TEdit).width) or
      (Y=0) or (Y=(Sender as TEdit).Height) then edit2.Color := clWhite
      else edit2.Color := clRed;
end;

Regards, Zif.
0
 
LVL 8

Expert Comment

by:ZifNab
ID: 1351779
reject my answer. Matvey's solution will be better.
0
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!

 
LVL 3

Expert Comment

by:Matvey
ID: 1351780
Heh, OK, I'm a bit late, but here it is:

_________________________________________________________________________
unit MUEdit;

interface

uses
  Messages, Classes, Controls, StdCtrls;

type
  TMUEdit = class(TEdit)
  private
    FOnMouseEnter: TNotifyEvent;
    FOnMouseLeave: TNotifyEvent;
    procedure CMMouseEnter(var Message: TMessage); message CM_MOUSEENTER;
    procedure CMMouseLeave(var Message: TMessage); message CM_MOUSELEAVE;
  published
    property OnMouseEnter: TNotifyEvent read FOnMouseEnter write FOnMouseEnter;
    property OnMouseLeave: TNotifyEvent read FOnMouseLeave write FOnMouseLeave;
  end;

procedure Register;

implementation

procedure TMUEdit.CMMouseEnter(var Message: TMessage);
begin
  inherited;
  if Assigned(FOnMouseEnter) then FOnMouseEnter(Self);
end;

procedure TMUEdit.CMMouseLeave(var Message: TMessage);
begin
  inherited;
  if Assigned(FOnMouseLeave) then FOnMouseLeave(Self);
end;

procedure Register;
begin
  RegisterComponents('Samples', [TMUEdit]);
end;

end.
_________________________________________________________________________

Install this component, and you have got the TMUEdit on the Samples panel. If you put it on your form, you have the OnMouseEnter and OnMouseLeave events which you can use with absolutely no farther work required. These events will be fired no meter which way the cursor enters or leavs the edit rectangle. Why the guys from Borland weren't so kind and did it themselvs??? :)

--Matvey
0
 
LVL 1

Author Comment

by:keithcsl
ID: 1351781
matvey

could u post it as an answer?
thanks heaps

Regards
keith
0
 
LVL 3

Expert Comment

by:Matvey
ID: 1351782
Hi Keith, glad it's one headache less!
0
 
LVL 3

Accepted Solution

by:
Matvey earned 160 total points
ID: 1351783
Woopst...
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

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…
Hello everybody This Article will show you how to validate number with TEdit control, What's the TEdit control? TEdit is a standard Windows edit control on a form, it allows to user to write, read and copy/paste single line of text. Usua…
This is my first video review of Microsoft Bookings, I will be doing a part two with a bit more information, but wanted to get this out to you folks.
In this video, Percona Director of Solution Engineering Jon Tobin discusses the function and features of Percona Server for MongoDB. How Percona can help Percona can help you determine if Percona Server for MongoDB is the right solution for …
Suggested Courses

671 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