最新下载
热门教程
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
一份很有价值的子类化的源代码!
时间:2022-07-02 18:09:30 编辑:袖梨 来源:一聚教程网
' 新建一个 ActiveX DLL 工程,名称 SmartSubClassLib
' 以下代码放在标准模块里,模块名 mSmartSubClass
' ----------------------------------------------------
' Module mSmartSubClass
'
' Version... 1.0
' Date...... 24 April 2001
'
' Copyright (C) 2001 Andr轶 Pons (andres@vbsmart.com)
' ----------------------------------------------------
'API declarations:
Option Explicit
Public Const SSC_OLDPROC = "SSC_OLDPROC"
Public Const SSC_OBJADDR = "SSC_OBJADDR"
Private Declare Function GetProp Lib "user32" Alias "GetPropA" ( _
ByVal hWnd As Long, _
ByVal lpString As String) As Long
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" ( _
Destination As Any, _
Source As Any, _
ByVal Length As Long)
'
' Function StartSubclassWindowProc()
'
' This is the first windowproc that receives messages
' for all subclassed windows.
' The aim of this function is to just collect the message
' and deliver it to the right SmartSubClass instance.
'
Public Function SmartSubClassWindowProc( _
ByVal hWnd As Long, _
ByVal uMsg As Long, _
ByVal wParam As Long, _
ByVal lParam As Long) As Long
Dim lRet As Long
Dim oSmartSubClass As SmartSubClass
'Get the memory address of the class instance...
lRet = GetProp(hWnd, SSC_OBJADDR)
If lRet <> 0 Then
'oSmartSubClass will point to the class instance
'without incrementing the class reference counter...
CopyMemory oSmartSubClass, lRet, 4
'Send the message to the class instance...
SmartSubClassWindowProc = oSmartSubClass.WindowProc(hWnd, _
uMsg, wParam, lParam)
' 以下代码放在标准模块里,模块名 mSmartSubClass
' ----------------------------------------------------
' Module mSmartSubClass
'
' Version... 1.0
' Date...... 24 April 2001
'
' Copyright (C) 2001 Andr轶 Pons (andres@vbsmart.com)
' ----------------------------------------------------
'API declarations:
Option Explicit
Public Const SSC_OLDPROC = "SSC_OLDPROC"
Public Const SSC_OBJADDR = "SSC_OBJADDR"
Private Declare Function GetProp Lib "user32" Alias "GetPropA" ( _
ByVal hWnd As Long, _
ByVal lpString As String) As Long
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" ( _
Destination As Any, _
Source As Any, _
ByVal Length As Long)
'
' Function StartSubclassWindowProc()
'
' This is the first windowproc that receives messages
' for all subclassed windows.
' The aim of this function is to just collect the message
' and deliver it to the right SmartSubClass instance.
'
Public Function SmartSubClassWindowProc( _
ByVal hWnd As Long, _
ByVal uMsg As Long, _
ByVal wParam As Long, _
ByVal lParam As Long) As Long
Dim lRet As Long
Dim oSmartSubClass As SmartSubClass
'Get the memory address of the class instance...
lRet = GetProp(hWnd, SSC_OBJADDR)
If lRet <> 0 Then
'oSmartSubClass will point to the class instance
'without incrementing the class reference counter...
CopyMemory oSmartSubClass, lRet, 4
'Send the message to the class instance...
SmartSubClassWindowProc = oSmartSubClass.WindowProc(hWnd, _
uMsg, wParam, lParam)
相关文章
- 尘白禁区新星开拓通关流程介绍 尘白禁区新星开拓怎么通关 05-06
- 光遇5.6免费魔法有什么 光遇5月6日免费魔法收集攻略 05-06
- 无期迷途空条徐伦技能介绍 无期迷途空条徐伦技能怎么样 05-06
- 光遇4.7每日任务怎么做 光遇4月7日每日任务做法攻略 05-06
- 热币交易所下载官方app苹果版 05-06
- 热币交易所app中文版 05-06