如何判断 DBNavigator1里的某一个按钮是否可用？

Question

if DBNavigator1.    then//如果nbpost这个按钮可用,这个判断如何表达
  
 DBNavigator1.BtnClick(nbpost);

Answer 1

if DBNavigator1.Enabled=True then

Answer 2

DBNavigator有一个Protected的变量Buttons: array[TNavigateBtn] of TNavButton在程序中定义:
type
TMyDBNavigator=class(TDBNavigator)
end;使用TMyDBNavigator(DBNavigator1).Buttons[i]获取DBNavigator1中按钮

Answer 3

if DBNavigator1.Controls[0].Enabled then DBNavigator1.BtnClick(nbpost)
   //----------nbFirst Button
if DBNavigator1.Controls[1].Enabled then DBNavigator1.BtnClick(nbpost)
   //nbPrior Button
if DBNavigator1.Controls[2].Enabled then DBNavigator1.BtnClick(nbpost)
   //nbNext Button
if DBNavigator1.Controls[3].Enabled then DBNavigator1.BtnClick(nbpost)
   //nbLast Button
if DBNavigator1.Controls[4].Enabled then DBNavigator1.BtnClick(nbpost)
   //nbInsert Button
   //  以此类推分别为nbDelete,nbEdit,nbPost,nbCancel, nbPost按钮