it is best to add all your buttons at once, and then only show and hide later on.
Code:
;#NoTrayIcon
#NoEnv
SetWorkingDir %A_ScriptDir%
;Menu, Tray, Icon, wow.ico
Gui_x =Center ; (Default = Center)
Gui, Add, Picture,x0 y0 w151 h101 BackgroundTrans, lotr.jpg
Gui, font, s10, Arial
Gui, Add, Button, W50 H20 Y0 X0 +BackgroundTrans gAction, OK
Gui, Add, Button, W100 H25 Y50 X0 vLoading Hidden, Button A
Gui, Add, Button, W100 H25 Y50 X0 vCopy Hidden, Button B
Gui, Add, Button, W100 H25 Y50 X0 vDelete Hidden, Button C
Gui, Add, Button, W100 H25 Y50 X0 vtroep Hidden, Button D
Gui, Add, Button, W100 H25 Y50 X0 vWissen Hidden, Button E
Gui, Show,w151 h101,test
return
Action:
GuiControl, Show, Loading
sleep 500
GuiControl, Hide, Loading
sleep 500
GuiControl, Show, Copy
sleep 500
GuiControl, Hide, Copy
sleep 500
GuiControl, Show, Delete
sleep 500
GuiControl, Hide, Delete
sleep 500
GuiControl, Show, troep
sleep 500
GuiControl, Hide, troep
sleep 500
GuiControl, Show, Wissen
sleep 500
GuiControl, Hide, Wissen
sleep 500
return
GuiClose:
GuiEscape:
Exitapp