🚀 go-pugleaf

Hallo,
I use the WM_COPYDATA message to send the AnsiString content
between TApplications. Once in a while (I'd say <10% cases)
the string will arrive corrupt at the end. Are there any
special considerations regarding usage of this message for
data exchange? or should I ask in .components.using NG ?
Here's what I do:

//sending:
COPYDATASTRUCT cds;
cds.dwData=1;//number of strings to be sent
cds.cbData=AnsiStringToSend.Length();//<1024
cds.lpData=AnsiStringToSend.c_str();
::SendMessage(hWndOfReceiver,WM_COPYDATA, 0,(LPARAM)&cds);
//reciving:
char buff[1024];
::ZeroMemory(buff,sizeof(buff));
::CopyMemory(buff,Msg.CopyDataStruct->lpData,Msg.CopyDataStruct->cbData);
//where Msg is of ref. to TWMCopyData type
AnsiString s=AnsiString(buff);
ShowMessage(s);//some strings get corrupt. Why?

Please help. Boba.