获取其他进程中ListView的文本

(*//
标题:获取其他进程中ListView的文本
说明:Window2000+Delphi6调试通过
设计:Zswang
支持:wjhu111@21cn.com
日期:2004-03-25
//*)

uses CommCtrl;

function ListViewColumnCount(mHandle: THandle): Integer;
begin
Result := Header_GetItemCount(ListView_GetHeader(mHandle));
end; { ListViewColumnCount }

function GetListViewText(mHandle: THandle; mStrings: TStrings): Boolean;
var
vColumnCount: Integer;
vItemCount: Integer;
I, J: Integer;
vBuffer: array[0..255] of Char;
vProcessId: DWORD;
vProcess: THandle;
vPointer: Pointer;
vNumberOfBytesRead: Cardinal;
S: string;
vItem: TLVItem;
begin
Result := False;
if not Assigned(mStrings) then Exit;
vColumnCount := ListViewColumnCount(mHandle);
if vColumnCount <= 0 then Exit;
vItemCount := ListView_GetItemCount(mHandle);
GetWindowThreadProcessId(mHandle, @vProcessId);
vProcess := OpenProcess(PROCESS_VM_OPERATION or PROCESS_VM_READ or
PROCESS_VM_WRITE, False, vProcessId);
vPointer := VirtualAllocEx(vProcess, nil, 4096, MEM_RESERVE or MEM_COMMIT,
PAGE_READWRITE);
mStrings.BeginUpdate;
try
mStrings.Clear;
for I := 0 to vItemCount - 1 do begin
S := '';
for J := 0 to vColumnCount - 1 do begin
with vItem do begin
mask := LVIF_TEXT;
iItem := I;
iSubItem := J;
cchTextMax := SizeOf(vBuffer);
pszText := Pointer(Cardinal(vPointer) + SizeOf(TLVItem));
end;
WriteProcessMemory(vProcess, vPointer, @vItem,
SizeOf(TLVItem), vNumberOfBytesRead);
SendMessage(mHandle, LVM_GETITEM, I, lparam(vPointer));
ReadProcessMemory(vProcess, Pointer(Cardinal(vPointer) + SizeOf(TLVItem)),
@vBuffer[0], SizeOf(vBuffer), vNumberOfBytesRead);
S := S + #9 + vBuffer;
end;
Delete(S, 1, 1);
mStrings.Add(S);
end;
finally
VirtualFreeEx(vProcess, vPointer, 0, MEM_RELEASE);
CloseHandle(vProcess);
mStrings.EndUpdate;
end;
Result := True;
end; { GetListViewText }

//Example
procedure TForm1.FormCreate(Sender: TObject);
begin
RegisterHotKey(Handle, 1, MOD_WIN, VK_F2);
end;

procedure TForm1.FormDestroy(Sender: TObject);
begin
UnRegisterHotKey(Handle, 1);
end;

procedure TForm1.WMHOTKEY(var Msg: TWMHOTKEY);
begin
case Msg.HotKey of
1:
GetListViewText(
WindowFromPoint(Point(Mouse.CursorPos.X, Mouse.CursorPos.Y)),
MemoText.Lines);
end;
end;