pragma classflags

The pragma classflags preprocessor command controls the way WMI creates or updates classes depending on the flags specified.

The following describes the syntax for this command:

#pragma classflags ("[flag1], [flag2]")

[Flag] must be one or more of the following arguments. You can combine any flags that don't contradict each other.

Flag	Description
createonly	Instructs the compiler not make any changes to existing classes and terminates a compilation if a class specified in the MOF file already exists in WMI.
forceupdate	Forces updates of classes when conflicting child classes exist. For example, if you define a class qualifier in a child class and the base class attempts to add the same qualifier, using this flag causes the compiler to resolve this conflict by deleting the conflicting qualifier in the child class. If the child class has instances, the update fails.
safeupdate	Allows the compiler to update classes even if child classes exist, if the change does not cause conflicts with child classes. For example, this flag allows you to add a new property to a base class without also having to add the property to any pre-existing child class.
updateonly	Instructs the compiler to not create any new classes and causes the compiler to terminate the compilation if a class specified in the MOF file does not exist.

Examples

The following example shows how to use this command with the updateonly and forceupdate flags.

#pragma classflags ("updateonly", "forceupdate")

Requirement	Value
Minimum supported client	Windows Vista
Minimum supported server	Windows Server 2008