Retrieves data from the host screen.
Parameters:
BufferStr - Variable to contain host screen data.
LengthVal - Number of characters to read.
RowVal - Row position.
ColumnVal - Column position.
Returns:
0 for success; or a non-zero error code. See Error Codes for a complete listing of error code descriptions.
Remarks:
When the ReadScreen function returns, the BufferStr variable will contain the host screen data.
Example:
Set Host = CreateObject( "BZWhll.WhllObj" )
Host.Connect "A"
Host.ReadScreen Buf, 10, 7, 16
Host.MsgBox "Buf is " & Buf, 0