Anteckning
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The WPD_PARAMETER_USAGE_TYPES enumeration type describes how a method parameter is used in a given method.
Syntax
typedef enum tagWPD_PARAMETER_USAGE_TYPES {
WPD_PARAMETER_USAGE_RETURN = 0,
WPD_PARAMETER_USAGE_IN = 1,
WPD_PARAMETER_USAGE_OUT = 2,
WPD_PARAMETER_USAGE_INOUT = 3
} WPD_PARAMETER_USAGE_TYPES;
Constants
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WPD_PARAMETER_USAGE_RETURN
-
The parameter receives the return value, if specified by the method.
-
WPD_PARAMETER_USAGE_IN
-
The parameter contains an input value before the method is called.
-
WPD_PARAMETER_USAGE_OUT
-
The parameter contains an output value when the method returns.
-
WPD_PARAMETER_USAGE_INOUT
-
The parameter contains an input value before the method is called and an output value when it returns.
Requirements
| Requirement | Value |
|---|---|
| Header |
|