Simulate next click on INSTFILES page to take user to a Custom Page (NSIS)

Question

This is my use case:

I'm creating an uninstaller using NSIS.
I'm in the "MUI_UNPAGE_INSTFILES" page during the uninstallation flow.
Files got removed in the "Section Uninstall" code.
Now I need the user to be taken to a custom page, by simulating the next button click in "MUI_UNPAGE_INSTFILES".
I did check for "MUI_UNFINISHPAGE_NOAUTOCLOSE", but I don't have it defined in my code. Still it is not automatically moving to the next page.

This is the code where the pages are defined for the uninstaller:

UninstPage custom un.UninstConfirm_Show ;1st page (custom page)
!insertmacro MUI_UNPAGE_INSTFILES ;2nd page
UninstPage custom un.UninstFinish_Show ;3rd & final page (custom page)

I need to move from 2nd page to 3rd page without user clicking on the next button in the 2nd page.
Any ideas ?

Answer 1

Use the following code to simulate clicking the Next button:

GetDlgItem $0 $HWNDPARENT 1
SendMessage $HWNDPARENT ${WM_COMMAND} 1 $0

FYI: http://forums.winamp.com/showthread.php?t=187143

Answer 2

当使用 MUI 完成页面时，MUI 在un.onGUIInit调用SetAutoClose true ，但您可以在卸载程序部分调用SetAutoClose true以达到相同的效果。