基于SkinSB皮肤滚动条美化源码的改进版本，完美支持x64

前言：

大家知道，win32窗口的内置滚动自绘是个非常棘手的问题，在写这篇文章之前首先感谢下CSDN的mynamelj，他写的那个SkinSB开源的时候我就开始使用来美化一般win32窗口的滚动条，很好用，但是最近有想把自己的应用迁移到x64平台的想法，所以必须把全部源码编译成64位的版本，以便能在win 64位下获得最佳性能，好了废话不多说，继续往下看。

改进SkinSB：

当时遇到两大难题，第一个是API钩子库detours在X64下用不了，第二个是skinsb自有源码小部分不适应64位。

对于第一个难题，当时到微软网站看了下其实detours 3.0版本有支持64位的，但是不是免费的，收费$9999一套，相当于7万RMB左右，这费用我等实在付不起，只好另找其他方法，经同事介绍mhook库,稍微看了下也是开源的，使用方法也很方便，就两个函数，一个Mhook_SetHook加载API钩子，一个Mhook_Unhook

首先申明自己自定义的钩子函数：

//包含头文件
#include "../mhook/mhook.h"
#include "../skinsb/skinsb.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif

static int (WINAPI * TrueSetScrollInfo)(HWND hwnd, int fnBar, LPCSCROLLINFO lpsi, BOOL bRedraw) = SetScrollInfo;
static BOOL (WINAPI * TrueGetScrollInfo)(HWND hwnd, int fnBar, LPSCROLLINFO lpsi) = GetScrollInfo;
static int (WINAPI * TrueSetScrollPos)(HWND hwnd, int nBar, int nPos, BOOL bRedraw) = SetScrollPos;
static int (WINAPI * TrueGetScrollPos)(HWND hwnd, int nBar) = GetScrollPos;
static BOOL (WINAPI * TrueSetScrollRange)(HWND hwnd, int nBar, int nMinPos, int nMaxPos, BOOL bRedraw) = SetScrollRange;
static BOOL (WINAPI * TrueGetScrollRange)(HWND hwnd, int nBar, LPINT lpMinPos, LPINT lpMaxPos) = GetScrollRange;
static BOOL (WINAPI * TrueShowScrollBar)(HWND hwnd, int nBar, BOOL bShow) = ShowScrollBar;
static BOOL (WINAPI * TrueEnableScrollBar)(HWND hwnd, UINT wSBflags, UINT wArrows) = EnableScrollBar;

int WINAPI SetScrollInfoD(HWND hwnd, int fnBar, LPCSCROLLINFO lpsi, BOOL bRedraw)
{
	if( SkinSB_IsValid(hwnd) )
		return SkinSB_SetScrollInfo(hwnd, fnBar, lpsi, bRedraw);
	else
		return TrueSetScrollInfo(hwnd, fnBar, lpsi, bRedraw);
}

BOOL WINAPI GetScrollInfoD(HWND hwnd, int fnBar, LPSCROLLINFO lpsi)
{
	if( SkinSB_IsValid(hwnd) )
		return SkinSB_GetScrollInfo(hwnd, fnBar, lpsi);
	else
		return TrueGetScrollInfo(hwnd, fnBar, lpsi);
}

int WINAPI SetScrollPosD(HWND hwnd, int nBar, int nPos, BOOL bRedraw)
{
	if( SkinSB_IsValid(hwnd) )
		return SkinSB_SetScrollPos(hwnd, nBar, nPos, bRedraw);
	else
		return TrueSetScrollPos(hwnd, nBar, nPos, bRedraw);
}

int WINAPI GetScrollPosD(HWND hwnd, int nBar)
{
	if( SkinSB_IsValid(hwnd) )
		return SkinSB_GetScrollPos(hwnd, nBar);
	else
		return TrueGetScrollPos(hwnd, nBar);
}

BOOL WINAPI SetScrollRangeD(HWND hwnd, int nBar, int nMinPos, int nMaxPos, BOOL bRedraw)
{
	if( SkinSB_IsValid(hwnd) )
		return SkinSB_SetScrollRange(hwnd, nBar, nMinPos, nMaxPos, bRedraw);
	else
		return TrueSetScrollRange(hwnd, nBar, nMinPos, nMaxPos, bRedraw);
}

BOOL WINAPI GetScrollRangeD(HWND hwnd, int nBar, LPINT lpMinPos, LPINT lpMaxPos)
{
	if( SkinSB_IsValid(hwnd) )
		return SkinSB_GetScrollRange(hwnd, nBar, lpMinPos, lpMaxPos);
	else
		return TrueGetScrollRange(hwnd, nBar, lpMinPos, lpMaxPos);
}

BOOL WINAPI ShowScrollBarD(HWND hwnd, int nBar, BOOL bShow)
{
	if( SkinSB_IsValid(hwnd) )
		return SkinSB_ShowScrollBar(hwnd, nBar, bShow);
	else
		return TrueShowScrollBar(hwnd, nBar, bShow);
}

BOOL WINAPI EnableScrollBarD(HWND hwnd, UINT wSBflags, UINT wArrows)
{
	if( SkinSB_IsValid(hwnd) )
		return SkinSB_EnableScrollBar(hwnd, wSBflags, wArrows);
	else
		return TrueEnableScrollBar(hwnd, wSBflags, wArrows);
}

加载钩子：

BOOL CSkinSBDemoApp::InitInstance()
{

	// 加载钩子
	Mhook_SetHook(&(PVOID&)TrueSetScrollInfo, SetScrollInfoD);
	Mhook_SetHook(&(PVOID&)TrueGetScrollInfo, GetScrollInfoD);
	Mhook_SetHook(&(PVOID&)TrueSetScrollPos, SetScrollPosD);
	Mhook_SetHook(&(PVOID&)TrueGetScrollPos, GetScrollPosD);
	Mhook_SetHook(&(PVOID&)TrueSetScrollRange,SetScrollRangeD);
	Mhook_SetHook(&(PVOID&)TrueGetScrollRange,GetScrollRangeD);
	Mhook_SetHook(&(PVOID&)TrueShowScrollBar, ShowScrollBarD);
	Mhook_SetHook(&(PVOID&)TrueEnableScrollBar,EnableScrollBarD);

	CSkinSBDemoDlg dlg;
	m_pMainWnd = &dlg;
	INT_PTR nResponse = dlg.DoModal();
	if (nResponse == IDOK)
	{
		// TODO: Place code here to handle when the dialog is
		//  dismissed with OK
	}
	else if (nResponse == IDCANCEL)
	{
		// TODO: Place code here to handle when the dialog is
		//  dismissed with Cancel
	}

	// Since the dialog has been closed, return FALSE so that we exit the
	//  application, rather than start the application's message pump.
	return FALSE;
}

程序退出时卸载钩子：

int CSkinSBDemoApp::ExitInstance()
{
	// 卸载钩子
	Mhook_Unhook(&(PVOID&)TrueSetScrollInfo);
	Mhook_Unhook(&(PVOID&)TrueGetScrollInfo);
	Mhook_Unhook(&(PVOID&)TrueSetScrollPos);
	Mhook_Unhook(&(PVOID&)TrueGetScrollPos);
	Mhook_Unhook(&(PVOID&)TrueSetScrollRange);
	Mhook_Unhook(&(PVOID&)TrueGetScrollRange);
	Mhook_Unhook(&(PVOID&)TrueShowScrollBar);
	Mhook_Unhook(&(PVOID&)TrueEnableScrollBar);

	return CWinApp::ExitInstance();
}

好了，具体请看源码，源码里真相大白,附mynamelj博客：

http://blog.csdn.net/mynamelj/article/details/3895585#comments

支持X64的SKINSB源码下载：

http://download.csdn.net/detail/hurryboylqs/4491550