unit untFixForm;

interface

uses
Classes, SysUtils, Controls, Forms;

type
TFontedControl = class(TControl)
public
    property Font;
end;

TFontMapping = record
    SWidth : Integer;
    SHeight: Integer;
    FName: string;
    FSize: Integer;
end;

procedure FixForm(AForm: TForm);
procedure SetFontMapping;

var
FontMapping : array of TFontMapping;

implementation

procedure SetFontMapping;
begin
SetLength(FontMapping, 3);

// 800 x 600
FontMapping[0].SWidth := 800;
FontMapping[0].SHeight := 600;
FontMapping[0].FName := '宋体';
FontMapping[0].FSize := 7;

// 1024 x 768
FontMapping[1].SWidth := 1024;
FontMapping[1].SHeight := 768;
FontMapping[1].FName := '宋体';
FontMapping[1].FSize := 9;

// 1280 x 1024
FontMapping[2].SWidth := 1280;
FontMapping[2].SHeight := 1024;
FontMapping[2].FName := '宋体';
FontMapping[2].FSize := 11;

end;

procedure FixForm(AForm: TForm);
var
i, j                 : integer;
t                 : TControl;
begin
with AForm do
begin
    for i := 0 to ComponentCount - 1 do
    begin
      try
        t := TControl(Components[i]);
        t.left := Trunc(t.left * (Screen.width / 1024));
        t.top := Trunc(t.Top * (Screen.Height / 768));
        t.Width := Trunc(t.Width * (Screen.Width / 1024));
        t.Height := Trunc(t.Height * (Screen.Height / 768));
      except
      end; { try }
    end; { for i }

    for i:= 0 to Length(FontMapping) - 1 do
    begin
      if (Screen.Width = FontMapping[i].SWidth) and (Screen.Height = FontMapping[i].SHeight) then
      begin
        for j := 0 to ComponentCount - 1 do
        begin
          try
            TFontedControl(Components[j]).Font.Name := FontMapping[i].FName;
            TFontedControl(Components[j]).FONT.Size := FontMapping[i].FSize;
          except
          end; { try }
        end; { for j }
      end; { if }
    end; { for i }
end; { with }
end;

initialization
SetFontMapping;

end.

SetFontMapping 方法可以自行修改，以适应更多的分辨率。

调用也非常简单，如下所示：

procedure TForm1.FormShow(Sender: TObject);
begin
if MessageBox(Handle,'要使用屏幕自适应吗？','提示',MB_YESNO or MB_ICONINFORMATION) = idno then Exit;
untFixForm.FixForm(Self);
end;