关于枚举所有顶级窗口的问题.

Y.A.K.E 2019-11-11 09:52:35

求各位老师来教育教育我.
让我实现: 枚举所有顶级句柄,但是一个进程(pid),只收集一个主窗口句柄的办法.

下面的问题都是围绕这个出发点提的.

Q1 : 已知一个句柄,获取它主窗口的顶级句柄到底是哪个方法?
网上找了好多
GetParent(hwd);
GetWindow(hwd,GW_OWNER);
GetWindow(hwd,GW_CHILD);
GetTopWindow(hwd);
GetWindowLong(hwd,GWL_HWNDPARENT);

最看不懂就是这个位运算了

GetWindowLong(hwd, GWL_EXSTYLE) and WS_EX_TOOLWINDOW

我平时用的就是GetParent,但是,最近在学习枚举顶级窗口,获取顶级句柄的时候碰到一个问题.

Q2:

SPY++ 获取QQ句柄,对应的父窗口的句柄就是桌面(GetDesktopWindow)

但是我通过枚举获取,QQ这个句柄,为啥父句柄是非桌面句柄?

我的代码如下

//句柄和进程一一对应的结构体

type twindata=record

  pid: DWORD; 

  hwd:hwnd;

end;



var

all_td:array of twindata;







function EnumWindowsProc(Wnd: HWND; var lp: integer): Bool; stdcall;

var

PID: DWORD;

begin





  GetWindowThreadProcessID(Wnd, @PID);



      setlength(all_td,length(all_td)+1);

      all_td[length(all_td)-1].pid:=PID;

      all_td[length(all_td)-1].hwd:=Wnd;



  end;







  Result := True;

end;



procedure get_all_window_list();

begin

   EnumWindows(@EnumWindowsProc, 0);

   //EnumDesktopWindows(0,@EnumWindowsProc, 0);  //两个好像没区别

end;









procedure TForm1.Button1Click(Sender: TObject);

var

i:integer;

tmp_wintext:array[0..254] of wideChar;



begin

   setlength(all_td,0);



   get_all_window_list();



   ListView1.Clear;



   for I := Low(all_td) to High(all_td) do

   begin

      GetWindowTextW(all_td[i].hwd,@tmp_wintext,SizeOf(tmp_wintext));



      with listview1.items.add do

      begin

          caption:= inttostr(all_td[i].pid);  //pid



          subitems.add(inttostr(all_td[i].hwd));  //hwd



          subitems.add(tmp_wintext);   //标题



          subitems.Add(booltostr(IsWindowVisible(all_td[i].hwd),true)); //是否显示



          subitems.Add(inttostr(GetParent(all_td[i].hwd))); //父句柄



          subitems.Add(inttostr(GetWindow(all_td[i].hwd, GW_OWNER))); //状态1



          subitems.Add(inttostr(GetWindow(all_td[i].hwd, GW_CHILD))); //状态2



          subitems.Add(inttostr(GetTopWindow(all_td[i].hwd)));  //状态3



          subitems.Add(inttostr(GetWindowLong(all_td[i].hwd, GWL_HWNDPARENT)));  //状态4



          subitems.Add(inttostr((GetWindowLong(all_td[i].hwd, GWL_EXSTYLE) and WS_EX_TOOLWINDOW)));  //状态5



      end;



   end;





end;