Drag/Drop text from another app to a TEdit

[Birger52]

Win7 64bit, laz 2.0.12, FPC 3.2.0
I need to be able to drag text from another app (browser or text-editor) and drop it on a TEdit (clipbord is used for other stuff, so copy/paste is not a solution).
And actually, I figured, why not create the thing as a componemt, so it can be used in other applications as well...?

So - a Form with a TEdit.
Nothing else for a start.
Plan was to use Melanders (DragDropLazarus 5.2.0.0 Installed from online - and demos functioning. Unfortunately, there are no demo of using DragTextTarget...)
Creating a OnDragOver handler for the TEdit.

Code: Pascal  [Select][+][-]

1. procedure TForm1.Edit1DragOver(Sender, Source: TObject; X, Y: Integer;
2.   State: TDragState; var Accept: Boolean);
3. begin
4.   Accept := true;
5. end;
6.  

Running the app, it is never called. Neither in Debug nor normal mode.
Added a TDropTextTarget and set TEdit1 as Target.
That raises an exception (Compiles fine, but gies a runtime esception):

TEdit can't have a control of class TWinControlProxy as a child

So what am I missing?

[Birger52]

Yes - and a lot of other stuff, floating around. 
I do understand the principles.

Problem with Melanders seems to be some kind of typing - you can set a TPanel as a Target.
TPanel can then show the text as Caption - which is not really what is needed.
Should be possible to Drag/Drop to a TEdit or TMemo (and possibly other text-handling types) when dragging text.

Created my own version of TDropTextTarget, which allows for that - TEdit(s) do still need to be placed on a TPanel, and that panel be the Target of TMyDropTextTarget.

[Birger52]

Did anybody ever create an app that will accept drops from other apps, that are not created with Melanders components?

I have an editor that drags text out of it - using Melanders components.
I can drop these strings, and also from NP++.

But not from the IDE, and not from my browser.
Anybody has any ideas?

[Birger52]

I tried accepting dtLink - and it makes no difference. Also have dtCopy and dtMove active.
I tried setting the form to accept links, and it makes no difference.

Melanders TDropTextTarget simply never acitvates DragOver, when draggin from browser (FF).