Specifications

Chapter 18 529
COM Interface Reference
Conventions of COM Interface
18. COM Interface Reference
Response
The section titled “Response” describes the format of data to be read when the “Read”
function (reading data) of COM object is possible.
Examples
The section titled “Examples” gives examples of programming using Visual Basic.
String (BSTR) String type 1
byte/character
(alphanumeric)
• Fixed-length character
Declaration of the number of
characters is required.
• Variable-length character
Maximum of about 64,000
characters
Object Object type 4 bytes Browsing object of choice
Varia nt Variant type 16 bytes No limitation
Data type Name
Memory
requirement
Range