Form modal deja que el form llamante tome el foco

[[Lepe]]

Empezado por Api de Windows

SetForegroundWindow

The foreground window is the window at the top of the Z order. It is the window that the user is working with. In a preemptive multitasking environment, you should generally let the user control which window is the foreground window. However, an application can call SetForegroundWindow if it wants to put itself into the foreground to display a critical error or information that requires the user's immediate attention. A good example is a debugger when it hits a breakpoint.

Código Delphi [-]
  applicationCreateform(TventanaModal,VentanaModal);
  SetForegroundWindow(Application.Handle);
  Application.ProcessMessages;
  Ventanamodal.Showmodal;
  Ventanamodal.free;

Saludos.