opening dwg files from a DBgrid

[bobbygm]

Hi everybody!

I'm developing a web application with Delphi 7. I have a DBgrid and some ComboBoxes to perform search operations; the resulting records are the names of some dwg (Autocad drawings) files, and everything works well.
Now I'd like to open those files by clicking on the corresponding cell of the DBgrid. In order to do that, I use the FileOpen function in response to a DBgridCellClick event, giving the full name of the file (I check it with FileExists before, and it's ok) and the opening mode (cardinal).
The procedure runs without giving errors, but the drawing doesn't open on my pc (I guess that, as it is, is too simple!). I want my application to open Autocad and the drawing (or only the drawing if Autocad is already open) in response to clicking on a cell, as if I were double-clicking on the file icon.

Any idea? What can I do to make it work?
thank u very much,

Emanuele

 

[towerbase]

Have you looked at the FAQs Delphi with Other Programs?

Andrew
Hampshire, UK

 

[bobbygm]

if fileexists(file_name)
then begin
fileopen(nome_file, fmopenread or fmShareDenyWrite);
showmessage('ok');
end
else showmessage('the file doesn't exist');


Me again!!!
I'm adding the actual code. The message 'ok' appears and the application keeps running, but nothing happens.
What can I do to open and view the dwg file?

Emanuele

 

[bobbygm]

thank u very much, Towerbase,
you were of great aid to me.
I almost found the answer to my problem on FAQs.
Still needs some improvement, but I guess I can
make it out now.

Emanuele