Write Method

Writes specified number of bytes to serial port.

Syntax

Visual Basic	-
Visual C++ (MFC)	long Write(long DataBuffer, long BytesToWrite);
Visual C++ (#import)	LONG Write(LONG DataBuffer, LONG BytesToWrite);

Parameters

DataBuffer

[in] Buffer of characters to be written. Use type-casting to convert it from void* or char*.

BytesToWrite

[in] Number of bytes to write to serial port.

Return

Number of bytes written to serial port. It can write fewer bytes than requested; the return value must be noted, and the reminder of the operation should be retried when possible.

Errors

The method may throw exception. Use GetLastError method to get the error code.

Remarks

In Visual Basic use WriteArray.

Code Example

char *WriteBuffer = "Data to write";

try
{
	m_SPCControl1.Write((LONG)WriteBuffer, strlen(WriteBuffer));
}
catch(COleDispatchException* E)
{
	MessageBox(E->m_strDescription, mbCaption, MB_OK | MB_ICONERROR);
}