[Setup]: Uninstallable

Valid values:	`yes` or `no`, or a scripted boolean expression
Default value:	`yes`

Description:

This determines if Inno Setup's automatic uninstaller is to be included in the installation. If this is yes or to a scripted boolean expression evaluating to True the uninstaller is included. Otherwise, no uninstallation support is included, requiring the end-user to manually remove the files pertaining to your application.

Setting this to a boolean expression can be useful if you want to offer the user a 'portable mode' option.

Example:

[Setup]
Uninstallable=not IsTaskSelected('portablemode')

[Tasks]
Name: portablemode; Description: "Portable Mode"

See also:
CreateUninstallRegKey