CTSHolding

This property determines whether you can send data by querying the state of the Clear To Send (CTS) line. Typically, the modem sends the CTS signal to the attached computer to indicate that transmission can proceed.

Syntax

object.CTSHolding

Parameters

object
Object expression that evaluates to a Comm control.

The following table shows the CTSHolding property settings for the Comm control.

Setting
Description
True Clear To Send line high
False Clear To Send line low

Remarks

The CTSHolding property is not available at design time. It is read-only at run time.

When the Clear To Send line is low (CTSHolding = False) and times out, the Comm control sets the CommEvent property to comEventCTSTO (Clear To Send Timeout) and invokes the OnComm event.

The CTS line is used in RTS/CTS (Request To Send/Clear To Send) hardware handshaking. The CTSHolding property gives you a way to manually poll the CTS line if you need to determine its state.