COM-Port by Vertex

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And, of course I am using these declarations in a COM-Port.decls file:

.lib "Kernel32.dll" 
apiCreateFile%(lpFileName$, dwDesiredAccess, dwShareMode, lpSecurrityAttributes, dwCreationDistribution, dwFlagsAndAttributes, hTemplateFile) : "CreateFileA" 
apiSetupComm%(hFile, dwInQueue, dwOutQueue) : "SetupComm" 
apiGetCommState%(hFile, lpDCB*) : "GetCommState" 
apiSetCommState%(hFile, lpCDB*) : "SetCommState" 
apiSetCommMask%(hFile, dwEvtMask) : "SetCommMask" 
apiCloseHandle%(hObject) : "CloseHandle" 
apiEscapeCommFunction%(hFile, dwFunc) : "EscapeCommFunction" 
apiWriteFile%(hFile, lpBuffer*, nNumberOfBytesToWrite, lpNumberOfBytesWritten*, lpOverlapped) : "WriteFile" 
apiSetCommTimeouts%(hFile, lpCommTimeouts*) : "SetCommTimeouts" 
apiClearCommError%(hFile, lpErrors*, lpStat*) : "ClearCommError" 
apiReadFile%(hFile, lpBuffer*, nNumberOfBytesToRead, lpNumberOfBytesRead*, lpOverlapped) : "ReadFile"