com.jniwrapper.win32.ui

Class WindowProc

java.lang.Object

com.jniwrapper.Parameter

com.jniwrapper.Callback

com.jniwrapper.win32.ui.WindowProc

All Implemented Interfaces:

com.jniwrapper.PointerParameter

public class WindowProc
extends com.jniwrapper.Callback

This class represents default WINDOWPROC callback. Also, it provides ability to substitute window proc. of a specified window to enable custom message handling and processing.

Field Summary

Fields

Modifier and Type	Field and Description
protected IntPtr	_lParam
protected IntPtr	_lResult
protected com.jniwrapper.UInt	_msg
protected Wnd	_wnd
protected IntPtr	_wParam

Fields inherited from class com.jniwrapper.Parameter

LICENSE_TYPE, V

Constructor Summary

Constructors

Constructor and Description
WindowProc()
WindowProc(Wnd wnd)

Method Summary

Modifier and Type	Method and Description
void	addMessageListener(WindowMessageListener listener) Adds a specified window message listener.
void	callback()
Wnd	getWnd()
boolean	isSubstituted() Checks if native window procedure is substituted.
void	removeMessageListener(WindowMessageListener listener) Removes a specified listener.
void	restoreNative() Restores the window native procedure and disables custom message handling.
void	setWnd(Wnd wnd)
void	substitute() Substitutes a custom window procedure to enable window message handling.

Methods inherited from class com.jniwrapper.Callback

callback, clone, createReturnValueByFields, dispose, getCallingConvention, getDebugInfo, getLength, getParameters, getReturnValue, init, isNull, isUseFieldsForCallbackParameters, read, restoreState, saveState, setCallingConvention, setUseFieldsForCallbackParameters, toPointer, write

Methods inherited from class com.jniwrapper.Parameter

acceptIOPerformer, asReturnValue, dataBufferAssigned, equals, getAlignedLength, getAlignmentRequirement, getDataBuffer, getDataBufferOffset, hashCode, indent, pop, push, read, read, setDataBuffer, toByteArray, write

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

_wnd

protected Wnd _wnd

_msg

protected com.jniwrapper.UInt _msg

_wParam

protected IntPtr _wParam

_lParam

protected IntPtr _lParam

_lResult

protected IntPtr _lResult

Constructor Detail

WindowProc

public WindowProc(Wnd wnd)

Parameters:

wnd - is a handle of the window whose window procedure can be substituted.

WindowProc

public WindowProc()

Method Detail

callback

public void callback()

Specified by:

callback in class com.jniwrapper.Callback

addMessageListener

public void addMessageListener(WindowMessageListener listener)

Adds a specified window message listener.

Parameters:

listener -

removeMessageListener

public void removeMessageListener(WindowMessageListener listener)

Removes a specified listener.

Parameters:

listener -

substitute

public void substitute()

Substitutes a custom window procedure to enable window message handling.

Remember to call restoreNative() method to avoid problems during closing a window.

Throws:

java.lang.RuntimeException - if fails to substitute window procedure, for example, when trying to substitute procedure of a window, which was created by another process.

restoreNative

public void restoreNative()

Restores the window native procedure and disables custom message handling. This method must be called after substituting window procedure using the substitute() method.

isSubstituted

public boolean isSubstituted()

Checks if native window procedure is substituted.

Returns:

true if native procedure is substituted; otherwise false.

getWnd

public Wnd getWnd()

setWnd

public void setWnd(Wnd wnd)