ComQryTxQue

Syntax:      err_t far ComQryTxQue(handle_t Handle, int far *TotalSizeP, 
                                   int far *FreeSizeP) 
Parameters:  handle_t Handle - The handle returned via a successful ComOpen.
             int far *TotalSizeP - Far pointer to an integer which receives the 
                                   total size (in bytes) of the transmit queue 
             int far *FreeSizeP - Far pointer to an integer which receives the number 
                                  of free bytes available in the transmit queue 

                                  Actual numbers of characters buffered in the transmit
                                  queue, ready for transmission is: 
                                  *TotalSizeP - *FreeSizeP 
                     
                                  Note that this is a dynamic value that may change 
                                  from millisecond to millisecond.  
Returns:     0 - if successful 
             Any other value indicates an error condition.  
             ENOTYOURS - The specified port has not been acquired by the calling 
                         application.  
Comments:    ComOpen() must first be called in order to get a valid handle to 
             the communications port.