请问如何获得鼠标选中的文件的个数

[kook]

我在注册表里添加了一个KEY(功能是把我的程序可以在鼠标右键菜单显示）：
*\\shell\\Scomber\\Command
默认值为：
"D:\mytest.exe" %1


现在我在一个目录下面选中三个文件，我点右键选择我的程序，但是这个时候总是只能获得第一个程序，如何把三个程序都获得阿。
我用的是ParamCount和ParamStr

[wlp555ren]

这个问题应该要用Shell编程来实现。。不知道具体怎么做。帮你顶。。一起学习。。

[蒋晟]

http://www.codeproject.com/shell/ShellExtGuide2.asp

[kook]

还有别的答案么？

[lenassnake]

默认值为：
"D:\mytest.exe" %1
你定义就此1个参数，后面的当然传不了了。

[hongqi162]

看看这两个帖子都包含你要的内容

http://www.yesky.com/20000701/89833.shtml

http://www.wangwa.com/info/2006-12/46570.htm

[woshihaoge]

unit ContextMenuHandle;
interface
uses Windows,ActiveX,ComObj,ShlObj,Classes;
type
TContextMenu = class(TComObject,IShellExtInit,IContextMenu)
private
FFileName: array[0..MAX_PATH] of Char;
protected
function IShellExtInit.Initialize = SEIInitialize; // Avoid compiler warning
function SEIInitialize(pidlFolder: PItemIDList; lpdobj: IDataObject;
hKeyProgID: HKEY): HResult; stdcall;
function QueryContextMenu(Menu: HMENU; indexMenu, idCmdFirst, idCmdLast,
uFlags: UINT): HResult; stdcall;
function InvokeCommand(var lpici: TCMInvokeCommandInfo): HResult; stdcall;
function GetCommandString(idCmd, uType: UINT; pwReserved: PUINT;
pszName: LPSTR; cchMax: UINT): HResult; stdcall;
end;
const

Class_ContextMenu: TGUID = '{19741013-C829-11D1-8233-0020AF3E97A0}';
{全局唯一标识符(GUID)是一个16字节（128为）的值，它唯一地标识一个接口(interface)}
var
FileList:TStringList;
implementation
uses ComServ, SysUtils, ShellApi, Registry,UnitForm;
function TContextMenu.SEIInitialize(pidlFolder: PItemIDList; lpdobj: IDataObject;
hKeyProgID: HKEY): HResult;
var
StgMedium: TStgMedium;
FormatEtc: TFormatEtc;
FileNumber,i:Integer;
begin
http://www.xfbbs.com/Book/others/_25C8_25E7/default.htm果lpdobj等于Nil，则本调用失败
if (lpdobj = nil) then begin
Result := E_INVALIDARG;
Exit;
end;
FileList:=TStringList.Create;
FileList.Clear;
http://www.xfbbs.com/Book/others/_25B3_25F5/default.htm始化剪贴版格式文件
with FormatEtc do begin
cfFormat := CF_HDROP;
ptd := nil;
dwAspect := DVASPECT_CONTENT;
lindex := -1;
tymed := TYMED_HGLOBAL;
end;
Result := lpdobj.GetData(FormatEtc, StgMedium);

if Failed(Result) then Exit;
FileNumber := DragQueryFile(StgMedium.hGlobal,$FFFFFFFF,nil,0);
for i:=0 to FileNumber-1 do begin
DragQueryFile(StgMedium.hGlobal, i, FFileName, SizeOf(FFileName));
FileList.Add(FFileName);
Result := NOERROR;
end;

ReleaseStgMedium(StgMedium);
end;

function TContextMenu.QueryContextMenu(Menu: HMENU; indexMenu, idCmdFirst,
idCmdLast, uFlags: UINT): HResult;
begin
Result := 0;
if ((uFlags and $0000000F) = CMF_NORMAL) or
((uFlags and CMF_EXPLORE) <> 0) then begin
// 往Context Menu中加入一个菜单项 ,菜单项的标题为察看位图文件
InsertMenu(Menu, indexMenu, MF_STRING or MF_BYPOSITION, idCmdFirst,
PChar('文件操作'));
// 返回增加菜单项的个数
Result := 1;
end;
end;

function TContextMenu.InvokeCommand(var lpici: TCMInvokeCommandInfo): HResult;
var
frmOP:TForm1;
begin
// 首先确定该过程是被系统而不是被一个程序所调用
if (HiWord(Integer(lpici.lpVerb)) <> 0) then
begin
Result := E_FAIL;
Exit;
end;
// 确定传递的参数的有效性
if (LoWord(lpici.lpVerb) <> 0) then begin
Result := E_INVALIDARG;
Exit;
end;

//文件操作窗口
frmOP:=TForm1.Create(nil);
http://www.xfbbs.com/Book/others/_25BD_25AB/default.htm所有的文件列表添加到文件操作窗口的列表中
frmOP.ListBox1.Items := FileList;
Result := NOERROR;
end;

function TContextMenu.GetCommandString(idCmd, uType: UINT; pwReserved: PUINT;
pszName: LPSTR; cchMax: UINT): HRESULT;
begin
if (idCmd = 0) then begin
if (uType = GCS_HELPTEXT) then
{返回该菜单项的帮助信息，此帮助信息将在用户把鼠标
移动到该菜单项时出现在状态条上。}
StrCopy(pszName, PChar('点击该菜单项将执行文件操作'));
Result := NOERROR;
end
else
Result := E_INVALIDARG;
end;

type
TContextMenuFactory = class(TComObjectFactory)
public
procedure UpdateRegistry(Register: Boolean); override;
end;

procedure TContextMenuFactory.UpdateRegistry(Register: Boolean);
var
ClassID: string;
begin
if Register then begin
inherited UpdateRegistry(Register);
ClassID := GUIDToString(Class_ContextMenu);
http://www.xfbbs.com/Book/others/_25B5_25B1/default.htm注册扩展库文件时，添加库到注册表中
CreateRegKey('*\shellex', '', '');
CreateRegKey('*\shellex\ContextMenuHandlers', '', '');
CreateRegKey('*\shellex\ContextMenuHandlers\FileOpreation', '', ClassID);
//果操作系统为Windows NT的话
if (Win32Platform = VER_PLATFORM_WIN32_NT) then
with TRegistry.Create do
try
RootKey := HKEY_LOCAL_MACHINE;
OpenKey('SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions', True);
OpenKey('Approved', True);
WriteString(ClassID, 'Context Menu Shell Extension');
finally
Free;
end;
end
else begin
DeleteRegKey('*\shellex\ContextMenuHandlers\FileOpreation');
inherited UpdateRegistry(Register);
end;
end;