InbufferCount

Retrieves the number of bytes in the receive buffers.

Not available at design time.

MSComm32 and Comm32 have Similar but not identical behavior See Remarks below

Syntax value = object.InbufferCount         object Name of the communications control.   value A numerical expression indicating the number of bytes in the receive buffer.         Examples Text1.Text = object.InbufferCount '// Retrieves the number of bytes '// in the buffer             object.InbufferCount = 0 '// Deletes all data from the buffer

Remarks:

You can not 'Write' any value to this property except 0 (zero) which deletes all data from the receive buffer. Setting any other value causes an error.

Differences in behavior between MSComm32 and Comm32

MSComm32
Because the maximum buffer size is a (short) integer this property can not return a value larger than 32k.

Comm32
Return value can be up to Long Integer.

Important: If removing MSComm32 from an existing project and replacing it with Comm32 remember that MSComm32 limited this property to a 32k “Short” Integer value. If using larger buffers you will of course remember to use variables of a larger data type to receive/process return values etc.