[SOLVED] Allow drag and drop from external applications?
lazarus / 31-LCL

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BigChimp · 2014-09-09 11:05

In the past, this question has been asked with a negative reply.

Perhaps things have changed meanwhile

I have an application with a TEdit. From another application, e.g.
Notepad++, I can select text and drag that to the TEdit control on my
application and try to drop it.
This doesn't work by default (not surprisingly).

Is there a way to get the text pasted into the control on drop?
If there is only a Windows-specific solution, that's fine, too.

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wp · 2014-09-09 11:46

http://lazplanet.blogspot.de/2013/05/drag-drop-files-lazarus-form.html

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BigChimp · 2014-09-09 11:48

Yes, but I'm not talking about files but text... so that example
doesn't apply.

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rvk · 2014-09-09 12:56

Maybe you could use something like this:
http://delphidabbler.com/articles?article=24

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BigChimp · 2014-09-09 12:58

Thanks, that looks promising. Will get back with success report or...
further questions

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rvk · 2014-09-09 13:00

Looking for "IDataObject lazarus" i also found this:
https://github.com/alrieckert/lazarus/tree/master/components/jcf2/Util
s/DragDrop

Maybe it's already in better shape for FPC/Lazarus.

Good luck

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BigChimp · 2014-09-09 13:33

Mmm... that gave me an idea... found this path in Lazarus
$(lazarusdir)\components\jcf2\Utils\DragDrop

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rvk · 2014-09-09 13:59

It should look something like attached project1.
(Just a new project with one TMemo dropped on the form receiving text)

It doesn't work with all text-editors (like UEdit) but it worked with
pasting text from LibreOffice.

(It does also work with Notepad++)

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BigChimp · 2014-09-09 16:17

Thanks a lot - that works nicely

Committed functionality to my Dutch postcode program:
(You can drag an address to the
https://bitbucket.org/reiniero/postcode

Started updating
http://wiki.lazarus.freepascal.org/Drag_and_Drop_sample