本文整理自网络，侵删。
1. Form -> keyprivew = True
2.
procedure TForm1.FormKeyDown(Sender: TObject; var Key: Word;
Shift: TShiftState);
begin
if (key = vk_down) or (key = 13) then begin // 如果按向下?I或Enter
//key:=vk_tab;
Caption :=ActiveControl.Name;
SendMessage(getparentform(self).Handle,WM_NEXTDLGCTL,0,0);
end else if (key = vk_up) then begin // 如果按向上?I
Caption :=ActiveControl.Name;
SendMessage(getparentform(self).Handle,WM_NEXTDLGCTL,1,0);
end;
if ssctrl in shift then
if key = vk_f11 then showmessage(‘按下Ctrl+F11′);
end;
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