CInternetToolbar::_CommonHandleFileSysChange函数分析之CReBar::_IDToIndex函数的作用
第一部分：
// IMPORTANT: don't change the value of anything between CBIDX_FIRST and CBIDX_LAST.
// CInternetToolbar::_LoadUpgradeSettings assumes these values haven't changed from
// version to version.
#define CBIDX_MENU 1 菜单栏
#define CBIDX_TOOLS 2 工具栏
#define CBIDX_LINKS 3
#define CBIDX_ADDRESS 4 地址栏
#define CBIDX_BRAND 5 徽标
#define CBIDX_FIRST CBIDX_MENU
#define CBIDX_LAST CBIDX_BRAND
void CInternetToolbar::_CommonHandleFileSysChange(LONG lEvent, LPITEMIDLIST* ppidl)
{
// stuff that needs to be done tree or no tree
switch (lEvent)
{
// README:
// If you need to add events here, then you must change SHELLBROWSER_FSNOTIFY_FLAGS in
// shbrowse.cpp in order to get the notifications
case SHCNE_DRIVEREMOVED:
case SHCNE_MEDIAREMOVED:
case SHCNE_MEDIAINSERTED:
case SHCNE_DRIVEADD:
case SHCNE_UPDATEIMAGE:
case SHCNE_UPDATEITEM:
// Forward this command to CAddressBand::FileSysChange()
// by using IToolbandHelper::OnWinEvent().
{
CBandItemData *pbid = _bs._GetBandItemDataStructByID(CBIDX_ADDRESS); //#define CBIDX_ADDRESS 4
if (pbid)
{
// REVIEW: why don't we use IShellChangeNotify here?
//
IUnknown_FileSysChange(pbid->pdb, (DWORD)lEvent, (LPCITEMIDLIST*)ppidl);
pbid->Release();
}
}
break;
CBandItemData* CBandSite::_GetBandItemDataStructByID(DWORD uID)
{
int iBand = _BandIDToIndex(uID);
if (iBand == -1)
return NULL;
return _GetBandItem(iBand);
}
/*----------------------------------------------------------
Purpose: Given the band ID, returns the internal band index.
*/
int CBandSite::_BandIDToIndex(DWORD dwBandID)
{
int nRet = -1;
if (_hwnd)
nRet = (int)SendMessage(_hwnd, RB_IDTOINDEX, (WPARAM) dwBandID, (LPARAM) 0);
return nRet;
}
#define RB_IDTOINDEX (WM_USER + 16) // wParam == id
第二部分：ID
UINT CReBar::_IDToIndex(UINT id)
{
UINT i;
REBARBANDINFO rbbi;
rbbi.cbSize = sizeof(REBARBANDINFO);
rbbi.fMask = RBBIM_ID; //根据rbbi.fMask = RBBIM_ID选择需要的信息
#define RBBIM_STYLE 0x00000001
#define RBBIM_COLORS 0x00000002
#define RBBIM_TEXT 0x00000004
#define RBBIM_IMAGE 0x00000008
#define RBBIM_CHILD 0x00000010
#define RBBIM_CHILDSIZE 0x00000020
#define RBBIM_SIZE 0x00000040
#define RBBIM_BACKGROUND 0x00000080
#define RBBIM_ID 0x00000100
#if (_WIN32_IE >= 0x0400)
#define RBBIM_IDEALSIZE 0x00000200
#define RBBIM_LPARAM 0x00000400
#define RBBIM_HEADERSIZE 0x00000800 // control the size of the header
#endif
// IMPORTANT: don't change the value of anything between CBIDX_FIRST and CBIDX_LAST.
// CInternetToolbar::_LoadUpgradeSettings assumes these values haven't changed from
// version to version.
#define CBIDX_MENU 1
#define CBIDX_TOOLS 2
#define CBIDX_LINKS 3
#define CBIDX_ADDRESS 4
#define CBIDX_BRAND 5
#define CBIDX_FIRST CBIDX_MENU
#define CBIDX_LAST CBIDX_BRAND
第三部分：
1: kd> p
comctl32!CReBar::_IDToIndex+0x12:
001b:6f6b22d7 c745b050000000 mov dword ptr [ebp-50h],50h
1: kd> dv
this = 0x00000000
id = 4 //id = 4
rbbi = struct tagREBARBANDINFOW
1: kd> p
UINT CReBar::_IDToIndex(UINT id)
{
UINT i;
REBARBANDINFO rbbi;
rbbi.cbSize = sizeof(REBARBANDINFO);
rbbi.fMask = RBBIM_ID;
for (i = 0; i < _cBands; i++)
{
if (_GetBandInfo(i, &rbbi))
{
if (rbbi.wID == (WORD)id)
return i;
}
}
return -1;
}
BOOL CReBar::_GetBandInfo(UINT uBand, LPREBARBANDINFO lprbbi)
{
PRBB prbb;
if (!_IsValidIndex(uBand) || lprbbi->cbSize > SIZEOF(REBARBANDINFO))
return(FALSE);
prbb = _GetBand(uBand);
。。。。。。
if (lprbbi->fMask & RBBIM_ID)
lprbbi->wID = prbb->wID;
。。。。。。
return(TRUE);
}
第四部分：
1: kd> dt comctl32!tagREBARBAND 0x101380
+0x000 fStyle : 0x720
+0x004 clrFore : 0xffffffff
+0x008 clrBack : 0xffffffff
+0x00c lpText : 0x000d6df8 -> 0
+0x010 cxText : 0n0
+0x014 iImage : 0n-1
+0x018 cxMinChild : 0n36
+0x01c cyMinChild : 0n19
+0x020 cxBmp : 0n0
+0x024 cyBmp : 0n0
+0x028 x : 0n0
+0x02c y : 0n0
+0x030 cx : 0n980
+0x034 cy : 0n22
+0x038 cxRequest : 0n4000
+0x03c cxMin : 0n52
+0x040 cxIdeal : 0n247
+0x044 cyMaxChild : 0n2147483647
+0x048 cyIntegral : 0n0
+0x04c cyChild : 0n19
+0x050 hwndChild : 0x00020094 HWND__
+0x054 hbmBack : (null)
+0x058 wID : 1
+0x05c lParam : 0n984592
+0x060 fChevron : 0n0
+0x064 rcChevron : tagRECT
+0x074 wChevState : 0x80
1: kd> dt comctl32!tagREBARBAND 0x101380+0x78*1
+0x000 fStyle : 0x562
+0x004 clrFore : 0xffffffff
+0x008 clrBack : 0xffffffff
+0x00c lpText : 0x000d6740 -> 0
+0x010 cxText : 0n0
+0x014 iImage : 0n-1
+0x018 cxMinChild : 0n38
+0x01c cyMinChild : 0n22
+0x020 cxBmp : 0n0
+0x024 cyBmp : 0n0
+0x028 x : 0n982
+0x02c y : 0n0
+0x030 cx : 0n38
+0x034 cy : 0n22
+0x038 cxRequest : 0n38
+0x03c cxMin : 0n38
+0x040 cxIdeal : 0n0
+0x044 cyMaxChild : 0n38
+0x048 cyIntegral : 0n0
+0x04c cyChild : 0n22
+0x050 hwndChild : 0x000300d0 HWND__
+0x054 hbmBack : (null)
+0x058 wID : 5
+0x05c lParam : 0n1022792
+0x060 fChevron : 0n0
+0x064 rcChevron : tagRECT
+0x074 wChevState : 0x80
1: kd> dt comctl32!tagREBARBAND 0x101380+0x78*2
+0x000 fStyle : 0x721
+0x004 clrFore : 0xffffffff
+0x008 clrBack : 0xffffffff
+0x00c lpText : 0x000fbe88 -> 0
+0x010 cxText : 0n0
+0x014 iImage : 0n-1
+0x018 cxMinChild : 0n67
+0x01c cyMinChild : 0n22
+0x020 cxBmp : 0n0
+0x024 cyBmp : 0n0
+0x028 x : 0n0
+0x02c y : 0n24
+0x030 cx : 0n1020
+0x034 cy : 0n22
+0x038 cxRequest : 0n4000
+0x03c cxMin : 0n83
+0x040 cxIdeal : 0n403
+0x044 cyMaxChild : 0n2147483647
+0x048 cyIntegral : 0n0
+0x04c cyChild : 0n22
+0x050 hwndChild : 0x000300ce HWND__
+0x054 hbmBack : (null)
+0x058 wID : 2
+0x05c lParam : 0n1034152
+0x060 fChevron : 0n0
+0x064 rcChevron : tagRECT
+0x074 wChevState : 0x80
1: kd> dt comctl32!tagREBARBAND 0x101380+0x78*3
+0x000 fStyle : 0x121
+0x004 clrFore : 0xffffffff
+0x008 clrBack : 0xffffffff
+0x00c lpText : 0x000fc9f8 -> 0x41
+0x010 cxText : 0n39
+0x014 iImage : 0n-1
+0x018 cxMinChild : 0n0
+0x01c cyMinChild : 0n22
+0x020 cxBmp : 0n0
+0x024 cyBmp : 0n0
+0x028 x : 0n0
+0x02c y : 0n48
+0x030 cx : 0n1020
+0x034 cy : 0n22
+0x038 cxRequest : 0n4000
+0x03c cxMin : 0n47
+0x040 cxIdeal : 0n0
+0x044 cyMaxChild : 0n2147483647
+0x048 cyIntegral : 0n0
+0x04c cyChild : 0n22
+0x050 hwndChild : 0x00020090 HWND__
+0x054 hbmBack : (null)
+0x058 wID : 4 +0x058 wID : 4
+0x05c lParam : 0n1035448
+0x060 fChevron : 0n0
+0x064 rcChevron : tagRECT
+0x074 wChevState : 0x80
1: kd> db 0x000fc9f8
000fc9f8 41 00 26 00 64 00 64 00-72 00 65 00 73 00 73 00 A.&.d.d.r.e.s.s.
000fca08 00 00 00 00 ff ff ff ff-07 00 04 00 17 01 08 00 ................