方式一:设置项目的主窗体
Project -> Options -> Application -> Forms

方式二:直接改项目源文件
Project -> View Source
program Project_database;
uses
Vcl.Forms,
Database in 'Database.pas' {Form1},
Unit2 in 'Unit2.pas' {Form2};
{$R *.res}
begin
Application.Initialize;
Application.MainFormOnTaskbar := True;
Application.CreateForm(TForm1, Form1);
Application.CreateForm(TForm2, Form2);
Application.Run;
end.
把 上述代码中的 创建 Form1、Form2 的代码顺序调整一下,即把要第一个启动的窗体排在最上面:
Application.CreateForm(TForm2, Form2); Application.CreateForm(TForm1, Form1); Application.Run;
参考: