Compiler Options, Runtime Conditions

Compiler options specified at the module level affect LibreOffice Basic compiler checks and error messages. Basic syntax as well as Basic set of instructions can be different according to the options that are in use. The less Option, the easiest and tolerant LibreOffice Basic language is. The more Option, the richer and controlled Basic language gets.


Compiler options must be specified before the executable program code in a module.


Option Statement diagram

Option Base Statement

配列のインデックス範囲について、デフォルトで適用される下限値を 0 ないし 1 のいずれかに設定します。

Option ClassModule Statement

Specifies that the module is a class module that contains members, properties, procedures and functions.

Option Compatible Statement

Option Compatible turns on the VBA-compatible Basic compiler mode at the module level.

CompatibilityMode() Function

CompatibilityMode() function is controlling runtime mode and affects all code executed after setting or resetting the mode.

Option Explicit Statement

プログラムコード中で使用するすべての変数を、Dim ステートメントを使って明示的に宣言する必要があるようにします。

Option Private Module

Specifies that the scope of the module is that of the Basic library it belongs to.

Option VBASupport Statement

Specifies that LibreOffice Basic will support some VBA statements, functions and objects.


Options specified at the module level also affect LibreOffice Basic runtime conditions. The behaviour of LibreOffice Basic instructions can differ.