Question

Get window title from a process

Asked by: davizinx

I would get the title of the window of the iexplore.exe process.
Important: it is not the active window, you get directly from the process!

any solution ?

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Asked On
2009-02-16 at 12:27:25ID24147897
Tags

window title

,

process delphi

Topic

Delphi Programming

Participating Experts
4
Points
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Comments
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Answers

 

by: Geert_GruwezPosted on 2009-02-16 at 13:15:19ID: 23653902

use process explorer from www.sysinternals.com

 

by: ThievingSixPosted on 2009-02-16 at 15:30:34ID: 23655009

Once you had the PID of the process you would enumerate all the windows and match it.

Something like this:

type
  PProcessID = ^TProcessID;
  TProcessID = record
    PID : DWORD;
    Title : String[255];
  end;
 
function GetWindowNameFromPID(PID: DWORD): String;
var
  ProcessID : PProcessID;
begin
  GetMem(ProcessID,SizeOf(TProcessID));
  ProcessID^.PID := PID;
  If Not EnumWindows(@EnumProcess,Pointer(ProcessID)) Then
    begin
    If MessageDlg('Could not get hook to the process handles.' + #13#10 + 'Try Again?',mtConfirmation,[mbYes,mbNo],0) = mrYes Then
      begin
      GetWindowNameFromPID(PID);
    end;
  end;
end;
 
function EnumProcess(Handle: HWND; lParam: Integer): BOOL; stdcall;
var
  PID : Cardinal;
  ProcessID : TProcessID;
  Title : String;
begin
  If Handle = NULL Then
    begin
    Result := False;
  end
  Else
    begin
    ProcessID := PProcessID(Pointer(lParam))^;
    GetWindowThreadProcessID(Handle,PID);
    If ProcessID.PID = lParam Then
      begin
      SetLength(Title,255);
      SetLength(Title,GetWindowText(Handle,PChar(Title),Length(Title)));
      If Title = '' Then
        begin
        Title := 'Empty';
      end;
      ProcessID.Title := Title;
    end;
    Result := True;
  end;
end;

                                              
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Select allOpen in new window

 

by: ahalyaPosted on 2009-02-16 at 16:08:12ID: 23655248

A process can have several windows.  You would like to get a list of all the captions, I presume.

 

by: ThievingSixPosted on 2009-02-16 at 16:09:34ID: 23655255

^ This is true. The code I posted will get the last window title. It can be modified to shove them in an array.

 

by: davizinxPosted on 2009-02-17 at 01:57:16ID: 23657745



[Error] Unit1.pas(64): Incompatible types: 'Integer' and 'Pointer'

for

If Not EnumWindows(@EnumProcess,Pointer(ProcessID)) Then

 

by: ThievingSixPosted on 2009-02-17 at 02:45:04ID: 23658025

Ah, change it to:

If Not EnumWindows(@EnumProcess,Integer(Pointer(ProcessID))) Then

 

by: davizinxPosted on 2009-02-17 at 14:45:02ID: 23665166

ThievingSix:

Thanks for reply, i try this code:

Label1.caption:= GetWindowNameFromPID(3688); //3688 = firefox

and i try with anothers process and dont work.
the label is blank, do not show the window name.

 

by: aikimarkPosted on 2009-05-03 at 11:44:48ID: 24290815

please post your entire routine in which the error occurs.

I think it might be easier to insert into a TStringList variable than an array.

20120131-EE-VQP-002

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