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I will have to implement a WM_COPYDATA IPC between 2 applications. I have seem samples on internet, but all of them only send strings that are less than 255 characters.
I want to send a big string (more than 1k) to another process using WM_COPYDATA. Is it possible? What are the limitations? Should I send a stream instead of a string or record?
Both applications were developed by me using Delphi 2010.
There are no limitations. You can send data as large as you like, subject to available memory constraints, using
WM_COPYDATA.