# GetSystemComHandle

int GetSystemComHandle (int COMPort, int *systemHandle);

## Purpose

Returns the system port handle associated with a particular COM port. This handle can be used in Windows SDK functions.

## Parameters

Input
Name | Type | Description
COMPort | integer | A number that indicates the COM port on which to operate. This number is paired with deviceName, which represents the COM port, during the OpenComConfig function call. Default Value: 1—COM1 Valid Range: 1—1,000
Output
Name | Type | Description
systemHandle | int (passed by reference) | The system port handle for the particular COM port.

## Return Value

Name | Type | Description
result | integer | The result of this function call. This code is a negative value that specifies the type of error that occurred.