在Form1,Form2,Form3上都放上一个button1
Form1
uses
unit3;
---
Form2
uses
Unit3;
---
Form3
uses
Unit1;
procedure TForm1.Button1Click(Sender: TObject);
begin
form3.Button1.Click;
end;
procedure TForm2.Button1Click(Sender: TObject);
begin
form3.Button1.Click;
end;
procedure TForm3.Button1Click(Sender: TObject);
begin
if Form1.active then
showMessage('Form1 Transfer');
if Form2.Active then
showMessage('Form2 Transfer');