如何实现快捷方式中的查找目标功能
2007-03-15 21:53:14 来源:WEB开发网核心提示: pIdlFile = pidl;/// 找出目标文件中文件名的偏移量while (cb = pIdlFile->mkid.cb){pidl2 = pIdlFile;pIdlFile = (ITEMIDLIST*)((BYTE*)pIdlFile + cb);}cb = pidl2-&
pIdlFile = pidl;
/// 找出目标文件中文件名的偏移量
while (cb = pIdlFile->mkid.cb)
{
pidl2 = pIdlFile;
pIdlFile = (ITEMIDLIST*)((BYTE*)pIdlFile + cb);
}
cb = pidl2->mkid.cb;
pidl2->mkid.cb = 0;
下面是打开文件夹及选中文件的代码,相信大家不难理解。 /// 打开目标文件所在的文件夹
if (SUCCEEDED(GetShellFolderViewDual(pidl, &pIShellFolderViewDual)))
{
pidl2->mkid.cb = cb;
// 0 Deselect the item.
// 1 Select the item.
// 3 Put the item in edit mode.
// 4 Deselect all but the specified item.
// 8 Ensure the item is displayed in the view.
// 0x10 Give the item the focus.
COleVariant bszFile(pidl2);
if(pIShellFolderViewDual != NULL)
{
/// 选中相应的选项
pIShellFolderViewDual->SelectItem(bszFile, 0x1d);
pIShellFolderViewDual->Release();
}
return TRUE;
}
源代码中包含了一个DEMO。下面是完整的函数,可以直接调用FindTarget(CString str)参数为文件名,若是快捷方式则会自动指向其目标。若代码中已做过COM的初始化工作,请删除CoInitialize(NULL);及CoUninitialize();语句。HRESULT GetShellFolderViewDual(ITEMIDLIST* pidl, IShellFolderViewDual** ppIShellFolderViewDual)
{
IWebBrowserApp* pIWebBrowserApp;
IDispatch* pDoc;
HWND hWnd;
HRESULT hr;
HINSTANCE ghSHDOCVW;
HRESULT (WINAPI*gpfSHGetIDispatchForFolder)(ITEMIDLIST* pidl, IWebBrowserApp** ppIWebBrowserApp);
*ppIShellFolderViewDual = NULL;
ghSHDOCVW = LoadLibrary(_T("SHDOCVW.DLL"));
if (ghSHDOCVW == NULL)
return FALSE;
pIWebBrowserApp=NULL;
gpfSHGetIDispatchForFolder =
(HRESULT (WINAPI*)(ITEMIDLIST*, IWebBrowserApp**)) GetProcAddress(ghSHDOCVW, "SHGetIDispatchForFolder");
if (gpfSHGetIDispatchForFolder == NULL)
return FALSE;
/// 调用未公开的API函数 SHGetIDispatchForFolder
if (SUCCEEDED(gpfSHGetIDispatchForFolder(pidl, &pIWebBrowserApp)))
{
if (SUCCEEDED(pIWebBrowserApp->get_HWND((long*)&hWnd)))
{
SetForegroundWindow(hWnd);
ShowWindow(hWnd, SW_SHOWNORMAL);
}
if (SUCCEEDED(hr = pIWebBrowserApp->get_Document(&pDoc)))
{
pDoc->QueryInterface(IID_IShellFolderViewDual, (void**) ppIShellFolderViewDual);
pDoc->Release();
}
pIWebBrowserApp->Release();
}
FreeLibrary(ghSHDOCVW);
return TRUE;
}
BOOL XZSHOpenFolderAndSelectItems(ITEMIDLIST *pidlFolder)
{
ITEMIDLIST *pidl, *pidl2;
ITEMIDLIST* pIdlFile;
USHORT cb;
IShellFolderViewDual* pIShellFolderViewDual;
HRESULT (WINAPI *gpfSHOpenFolderAndSelectItems)(LPCITEMIDLIST *pidlFolder, UINT cidl, LPCITEMIDLIST *apidl, DWORD dwFlags);
HINSTANCE ghShell32;
/// 只有WinXp及以上及系统才支持SHOpenFolderAndSelectItems() API
/// 那其它系统该怎么实现这个功能呢?只能采用其它的方法来处理
/// 首先用XP跟踪到SHOpenFolderAndSelectItems()API中,看它是如何处理的,再用同样的方法去实现
/// 其它系统的这个功能使用工具 VC6 .net 2003 MSDN Ollydbg v1.10中文版
ghShell32 = LoadLibrary(_T("Shell32.DLL"));
if (ghShell32 == NULL)
return FALSE;
gpfSHOpenFolderAndSelectItems =
(HRESULT (WINAPI*)(LPCITEMIDLIST*, UINT, LPCITEMIDLIST*, DWORD)) GetProcAddress(ghShell32, "SHOpenFolderAndSelectItems");
if (gpfSHOpenFolderAndSelectItems != NULL)
{
/// 可以获得SHOpenFolderAndSelectItems()函数的API地址
if (SUCCEEDED(gpfSHOpenFolderAndSelectItems((LPCITEMIDLIST*)pidlFolder,0,(LPCITEMIDLIST*)NULL,0)))
{
///直接调用系统的功能
FreeLibrary(ghShell32);
return TRUE;
}
FreeLibrary(ghShell32);
return FALSE;
}
FreeLibrary(ghShell32);
/// 当操作系统不支持SHOpenFolderAndSelectItems()函数的API时的处理,
/// 自已动手写一个与系统功能相同的代码
pidl = pidlFolder;
pIdlFile = pidl;
/// 找出目标文件中文件名的偏移量
while (cb = pIdlFile->mkid.cb)
{
pidl2 = pIdlFile;
pIdlFile = (ITEMIDLIST*)((BYTE*)pIdlFile + cb);
}
cb = pidl2->mkid.cb;
pidl2->mkid.cb = 0;
/// 打开目标文件所在的文件夹
if (SUCCEEDED(GetShellFolderViewDual(pidl, &pIShellFolderViewDual)))
{
pidl2->mkid.cb = cb;
// 0 Deselect the item.
// 1 Select the item.
// 3 Put the item in edit mode.
// 4 Deselect all but the specified item.
// 8 Ensure the item is displayed in the view.
// 0x10 Give the item the focus.
COleVariant bszFile(pidl2);
if(pIShellFolderViewDual != NULL)
{
/// 选中相应的选项
pIShellFolderViewDual->SelectItem(bszFile, 0x1d);
pIShellFolderViewDual->Release();
}
return TRUE;
}
return FALSE;
}
void FindTarget(CString str)
{
HRESULT hres;
IShellLink *psl;
ITEMIDLIST *pidl;
IPersistFile *ppf;
CoInitialize(NULL);
// Get a pointer to the IShellLink interface.
hres = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER,
IID_IShellLink, (LPVOID*)&psl);
if (SUCCEEDED(hres))
{
// 设置目标文件
psl->SetPath(str);
/// 获得目标文件的ITEMIDLIST
psl->GetIDList(&pidl);
// Get a pointer to the IPersistFile interface.
hres = psl->QueryInterface(IID_IPersistFile, (void**)&ppf);
if (SUCCEEDED(hres))
{
WCHAR wsz[MAX_PATH];
#ifdef _UNICODE
wcscpy(wsz, str);
#else
// Ensure that the string is Unicode.
MultiByteToWideChar(CP_ACP, 0, str, -1, wsz, MAX_PATH);
#endif
// Load the shortcut.
hres = ppf->Load(wsz, STGM_READ);
if (SUCCEEDED(hres))
{
/// 获得快捷方式的ITEMIDLIST
psl->GetIDList(&pidl);
}m
ppf->Release();
}
/// 打开文件夹并选中项目
XZSHOpenFolderAndSelectItems(pidl);
psl->Release();
}
CoUninitialize();
}
在VC6下编译后的代码,通过98,2k,XP的测试。
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