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...list all Windows with a Button on the taskbar?
Autor: Thomas Stutz
[ Print tip ]  

Tip Rating (7):  
     


function GetText(Wnd: HWND): string;
var 
  
textlength: Integer;
  Text: PChar;
begin
  
textlength := SendMessage(Wnd, WM_GETTEXTLENGTH, 0, 0);
  if textlength = 0 then Result := ''
  else
  begin
    
GetMem(Text, textlength + 1);
    SendMessage(Wnd, WM_GETTEXT, textlength + 1, Integer(Text));
    Result := Text;
    FreeMem(Text);
  end;
end;

function EnumWindowsProc(Wnd: HWND; lParam: lParam): BOOL; stdcall;
begin
  
Result := True;
  if (IsWindowVisible(Wnd) or IsIconic(wnd)) and
    
((GetWindowLong(Wnd, GWL_HWNDPARENT) = 0) or
    
(GetWindowLong(Wnd, GWL_HWNDPARENT) = GetDesktopWindow)) and
    
(GetWindowLong(Wnd, GWL_EXSTYLE) and WS_EX_TOOLWINDOW = 0) then
    
Form1.Listbox1.Items.Add('Handle: ' + IntToStr(Wnd) + ',Text:  ' + GetText(Wnd));
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  
Param: Longint;
begin
  
EnumWindows(@EnumWindowsProc, Param);
end;


 

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