How to drop Blobfields into Explorer

hi friends,

i need a step by step explaination about:

i have a blob-field and a field with the filename in a table. i wish that the user is able to multiselect rows in a dbgrid and drag them on the explorer.

after dropping there, the blobs should extracted from the table and created as file with the filename in the directory, where the drop finished.

meikl
LVL 27
kretzschmarAsked:
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men xinCEOCommented:
following...
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kretzschmarAuthor Commented:
raising points to make this q more attractive ;-)

any suggestions please
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hubdogCommented:
i think you should implement three interface dropsource,idataobject,iunkown .You can read the source of dragdrop components and the step by step tutorial(COM Interface-based Drag and Drop ) written by  Grahame Marsh in The Unofficial Newsletter of Delphi Users

good luck
hubdog
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kretzschmarAuthor Commented:
hi hubdog,

sorry to reject your answer,
but i need a bit more advice than some starting-points.

can you provide the url from the tutorial you mentioned?

if it usefull, then let i you know and you can answer again.

meikl
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hubdogCommented:
COM Interface-based Drag and Drop by  Grahame Marsh (http://www.undu.com/libs/dn9808.zip,
dn9809.zip,dn9811.zip,dn9812.zip,dn9901.zip,dn9902.zip,dn9903.zip,dn9908.zip)
The homesite for the Drag and Drop Component Suite is http://www.melander.dk.

good luck
hubdog

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hubdogCommented:
COM Interface-based Drag and Drop by  Grahame Marsh (http://www.undu.com/libs/dn9808.zip,
dn9809.zip,dn9811.zip,dn9812.zip,dn9901.zip,dn9902.zip,dn9903.zip,dn9908.zip)
The homesite for the Drag and Drop Component Suite is http://www.melander.dk 
Updates are also posted to Torry’s Delphi Pages and Delphi Super Page from time to time.

good luck
hubdog

0

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kretzschmarAuthor Commented:
hi hubdog,
thanks for the links,

i will try at monday,
if i become it applicable for my wish
and let you know,
therefore be patient.

for more clarification,
what i need is, what is enough for me is

explorer should accept the drag
and return me the path

in the meantime
any suggestions
or working samples
are welcome

meikl
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men xinCEOCommented:
hubdog:

Good to see you!   :-)

menxin
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simonetCommented:
Meikl, here is some reference material:

http://www.wideman-one.com/gw/tech/Delphi/dragdrop/index.htm

and also, as has already been suggested, the Drag and Drop Component Suite (great!):

http://www.melander.dk/delphi/dragdrop/

Yours,

Alex
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kretzschmarAuthor Commented:
well,
have checked out the
dragdrop-components from melander,
and have done a test with the TDropFileSource-Component.

this works proper enough for my needs,
and was easy to implement.

therefore i accept hubdogs last comment as answer,
for pointing me to this components.

well done hubdog,
congrates to your first 1000 expert-points ;-)

meikl

alex, you've right, its a great Suite ;-)
also thanks to you
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