获取其他程序中TreeView的内容

(*//
标题:获取其他进程中TreeView的文本
说明:Window2000+Delphi6调试通过
设计:Zswang
支持:wjhu111@21cn.com
日期:2004-03-26
//*)

function TreeNodeGetNext(mHandle: THandle; mTreeItem: HTreeItem): HTreeItem;
var
vParentID: HTreeItem;
begin
Result := nil;
if (mHandle <> 0) and (mTreeItem <> nil) then begin
Result := TreeView_GetChild(mHandle, mTreeItem);
if Result = nil then
Result := TreeView_GetNextSibling(mHandle, mTreeItem);
vParentID := mTreeItem;
while (Result = nil) and (vParentID <> nil) do begin
vParentID := TreeView_GetParent(mHandle, vParentID);
Result := TreeView_GetNextSibling(mHandle, vParentID);
end;
end;
end;  { TreeNodeGetNext }

function TreeNodeGetLevel(mHandle: THandle; mTreeItem: HTreeItem): Integer;
var
vParentID: HTreeItem;
begin
Result := -1;
if (mHandle <> 0) and (mTreeItem <> nil) then begin
vParentID := mTreeItem;
repeat
Inc(Result);
vParentID := TreeView_GetParent(mHandle, vParentID);
until vParentID = nil;
end;
end; { TreeNodeGetLevel }

function GetTreeViewText(mHandle: THandle; mStrings: TStrings): Boolean;
var
vItemCount: Integer;
vBuffer: array[0..255] of Char;
vProcessId: DWORD;
vProcess: THandle;
vPointer: Pointer;
vNumberOfBytesRead: Cardinal;
I: Integer;
vItem: TTVItem;
vTreeItem: HTreeItem;
begin
Result := False;
if not Assigned(mStrings) then Exit;
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;
vItemCount := TreeView_GetCount(mHandle);
vTreeItem := TreeView_GetRoot(mHandle);
for I := 0 to vItemCount - 1 do begin
with vItem do begin
mask := TVIF_TEXT;
cchTextMax := SizeOf(vBuffer);
pszText := Pointer(Cardinal(vPointer) + SizeOf(vItem));
hItem := vTreeItem;
end;
WriteProcessMemory(vProcess, vPointer, @vItem,
SizeOf(vItem), vNumberOfBytesRead);
SendMessage(mHandle, TVM_GETITEM, 0, lparam(vPointer));
ReadProcessMemory(vProcess, Pointer(Cardinal(vPointer) + SizeOf(TLVItem)),
@vBuffer[0], SizeOf(vBuffer), vNumberOfBytesRead);
mStrings.Add(StringOfChar(#9, TreeNodeGetLevel(mHandle, vTreeItem)) + vBuffer);
vTreeItem := TreeNodeGetNext(mHandle, vTreeItem);
end;
finally
VirtualFreeEx(vProcess, vPointer, 0, MEM_RELEASE);
CloseHandle(vProcess);
mStrings.EndUpdate;
end;
Result := True;
end; { GetTreeViewText }

//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:
GetTreeViewText(
WindowFromPoint(Point(Mouse.CursorPos.X, Mouse.CursorPos.Y)),
MemoText.Lines);
end;
end;