function WindowExists(AppWindowName, AppClassName: string): Boolean;
var
hwd: LongWord;
begin
hwd := 0;
hwd := FindWindow(PChar(AppWindowName), PChar(AppClassName));
Result := False;
if not (Hwd = 0) then {window was found if not nil}
Result := True;
end;
function DelphiLoaded: Boolean;
begin
DelphiLoaded := False;
if WindowExists('TPropertyInspector', 'Object Inspector') then
if WindowExists('TMenuBuilder', 'Menu Designer') then
if WindowExists('TAppBuilder', '(AnyName)') then
if WindowExists('TApplication', 'Delphi') then
if WindowExists('TAlignPalette', 'Align') then
DelphiLoaded := True;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
if DelphiLoaded then
begin
ShowMessage('Delphi is running');
end;
end;
// To know if a Application is running under de Delphi IDE or
// when it's running stand-alone:
function DelphiIsRunning: Boolean;
begin
Result := DebugHook <> 0;
end;
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