Solved

Drag & Drop between ListViews

Posted on 1998-08-15
2
249 Views
Last Modified: 2012-05-04
How can I make a "Drag & Drop" between two ListViews?
I have a component that handles all other drag and drops such as: from the desktop, from explorer or any other file manager. However it doesn't work with another ListView.
0
Comment
Question by:jonassondaniel
[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
  • 2
2 Comments
 
LVL 8

Accepted Solution

by:
ZifNab earned 50 total points
ID: 1362160
Hi jonassondaniel,

Have you got D2, or D3? Because in D2 there is a bug, sometimes it gives access violation... bug is fixed in D3.

This are the barebones I guess :

Use properties as eg. DropTarget for getting it finished
procedure TForm1.ListView1DragOver(Sender, Source: TObject; X, Y: Integer;
  State: TDragState; var Accept: Boolean);
begin
 If (Sender as TListView) = listview1 then Accept := true
  else accept := false
end;

procedure TForm1.ListView1DragDrop(Sender, Source: TObject; X, Y: Integer);
begin
 if (sender as TListview)=Listview1 then begin
  // do your drop stuff here.

 end;
end;

Regards, Zif.
0
 
LVL 8

Expert Comment

by:ZifNab
ID: 1362161
oops, has to be :

procedure TForm1.ListView1DragOver(Sender, Source: TObject; X, Y: Integer;
  State: TDragState; var Accept: Boolean);
begin
 Accept := ((Source as TListView) = listview2);
end;

procedure TForm1.ListView1DragDrop(Sender, Source: TObject; X, Y: Integer);
begin
 if (sender as TListview) and ((source as TlistView)=listview2) then begin
  // do your drop stuff here.
 end;

And now I'm gone.

Zif.
end;

0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

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

Suggested Solutions

A lot of questions regard threads in Delphi.   One of the more specific questions is how to show progress of the thread.   Updating a progressbar from inside a thread is a mistake. A solution to this would be to send a synchronized message to the…
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…
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…
In an interesting question (https://www.experts-exchange.com/questions/29008360/) here at Experts Exchange, a member asked how to split a single image into multiple images. The primary usage for this is to place many photographs on a flatbed scanner…

738 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