Phil, You cannot share a DC between different processes - because they are in different address space. However, you can try to FindWindow to look for the window handle, and obtain a DC to paint on its surface.
The other suggestion is to use an in-process (ie Active-X DLL) server. Dennis. ----- Original Message ----- From: "Phil Middlemiss" <[EMAIL PROTECTED]> To: "Multiple recipients of list delphi" <[EMAIL PROTECTED]> Sent: Wednesday, September 17, 2003 1:16 PM Subject: [DUG]: Sharing a drawing surface > Apologies if you get this twice but I think our mail server swallowed it the > first time I sent it: > > Does anyone know how to share a device context for drawing between separate > programs? Is it possible at all? I have tried passing the handle to the > context using an ActiveX connection so that a separate program can annotate > an image but even though the correct handle value is passed, none of the > annotation code seems to have any effect (the drawing code itself works > fine - I've tested that separately). > > > Any help would be appreciated. > > Cheers, > Phil. > > -------------------------------------------------------------------------- - > New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] > Website: http://www.delphi.org.nz > To UnSub, send email to: [EMAIL PROTECTED] > with body of "unsubscribe delphi" > Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/ > --------------------------------------------------------------------------- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of "unsubscribe delphi" Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
