Package com.sun.jna
Class PointerType
- java.lang.Object
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- com.sun.jna.PointerType
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- All Implemented Interfaces:
NativeMapped
- Direct Known Subclasses:
ByReference,COMInvoker,CoreFoundation.CFTypeRef,Ddeml.HCONV,Ddeml.HCONVLIST,Ddeml.HSZ,Guid.REFIID,IOKit.IOObject,Kstat2.Kstat2Handle,Kstat2.Kstat2Map,Kstat2.Kstat2MatcherList,Udev.UdevContext,Udev.UdevDevice,Udev.UdevEnumerate,Udev.UdevListEntry,WinDef.LPVOID,WinDef.PVOID,WinNT.HANDLE,WTypes.BSTR,WTypes.LPOLESTR,WTypes.LPSTR,WTypes.LPWSTR,X11.Display,X11.GC,X11.Screen,X11.Visual,X11.XImage
public abstract class PointerType extends java.lang.Object implements NativeMapped
Type representing a type-safe native pointer. Derived classes may override theNativeMapped.fromNative(java.lang.Object, com.sun.jna.FromNativeContext)method, which should instantiate a new object (or look up an existing one) of the appropriate type.
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Constructor Summary
Constructors Modifier Constructor Description protectedPointerType()The default constructor wraps a NULL pointer.protectedPointerType(Pointer p)This constructor is typically used byfromNative(java.lang.Object, com.sun.jna.FromNativeContext)if generating a new object instance.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description booleanequals(java.lang.Object o)Instances ofPointerTypewith identical pointers compare equal by default.java.lang.ObjectfromNative(java.lang.Object nativeValue, FromNativeContext context)The default implementation simply creates a new instance of the class and assigns its pointer field.PointergetPointer()Returns the associated nativePointer.inthashCode()The hash code for aPointerTypeis the same as that for its pointer.java.lang.Class<?>nativeType()Indicate the native type used by this converter.voidsetPointer(Pointer p)java.lang.ObjecttoNative()Convert this object to its native type (aPointer).java.lang.StringtoString()
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Constructor Detail
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PointerType
protected PointerType()
The default constructor wraps a NULL pointer.
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PointerType
protected PointerType(Pointer p)
This constructor is typically used byfromNative(java.lang.Object, com.sun.jna.FromNativeContext)if generating a new object instance.
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Method Detail
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nativeType
public java.lang.Class<?> nativeType()
Description copied from interface:NativeMappedIndicate the native type used by this converter.- Specified by:
nativeTypein interfaceNativeMapped- Returns:
- Java class representation of the native type.
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toNative
public java.lang.Object toNative()
Convert this object to its native type (aPointer).- Specified by:
toNativein interfaceNativeMapped- Returns:
- Java representation of the original Java object converted to a native type.
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getPointer
public Pointer getPointer()
Returns the associated nativePointer.- Returns:
- Native pointer representation for this object.
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setPointer
public void setPointer(Pointer p)
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fromNative
public java.lang.Object fromNative(java.lang.Object nativeValue, FromNativeContext context)The default implementation simply creates a new instance of the class and assigns its pointer field. Override if you need different behavior, such as ensuring a singlePointerTypeinstance for each uniquePointervalue, or instantiating a differentPointerTypesubclass.- Specified by:
fromNativein interfaceNativeMapped- Parameters:
nativeValue- Java representation of the native type to be converted.context- Context in which the conversion is taking place.- Returns:
- Converted object.
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hashCode
public int hashCode()
The hash code for aPointerTypeis the same as that for its pointer.- Overrides:
hashCodein classjava.lang.Object
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equals
public boolean equals(java.lang.Object o)
Instances ofPointerTypewith identical pointers compare equal by default.- Overrides:
equalsin classjava.lang.Object
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toString
public java.lang.String toString()
- Overrides:
toStringin classjava.lang.Object
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