SizeOfType

See Also: SizeOfString, SizeOfWString, Data Types, Variables and Constants

Purpose

SizeOfType returns the size in bytes of the specified data type. Can be used with both fundamental types and user defined struct types.

This is typically needed for passing structs to External_Function calls.

Return Type

Integer

Syntax

(SizeOfType( {type} ))

Where:

• {type} is any of the built in fundamental types or a user defined struct type

Example

  This sample shows how to determine the size of the string data type.

Function SizeOfString

    Move (SizeOfType(string)) to iSize

    Function_Return iSize

End_Function

Example

  This sample shows how to determine the size of a structured data type.

Struct tPoint

    Integer iXPos

    Integer iYPos

End_Struct

Function SizeOf_tPoint returns Integer

    Integer iSize

    Move (SizeOfType(tPoint)) to iSize

    Function_Return iSize

End_Function

Notes

A common mistake is to pass a variable of a particular data type instead of the data type itself. For example:

Procedure OnClick

    Integer iCounter iTypeSize

    Move (SizeOfType(iCounter)) to iTypeSize

End_Procedure

This code will result in compiler error 54 "Invalid symbol in expression". The corrected version of the above code is shown below, passing the data type itself:

Procedure OnClick

    Integer iCounter iTypeSize

    Move (SizeOfType(integer)) to iTypeSize

End_Procedure