В функции GetButtonID, когда дается более одного обработчика события кнопки, он автоматически выходит перед отображением диалогового окна страницы многоязыкового интерфейса пользователя.Но если указан только один обработчик события кнопки, страница каталога отображается без проблем.
!include "MUI2.nsh"
!define IDC_BUTTON_CDRIVEPATH 1200
!define IDC_BUTTON_DDRIVEPATH 1201
;---------------------------------------
;Name and file
Name Remove_ERROR
OutFile solve_error.exe
; -------------------------------
!define MUI_ICON "${NSISDIR}\Contrib\Graphics\Icons\setup.ico" ;
!define MUI_HEADERIMAGE
!define MUI_HEADERIMAGE_BITMAP "${NSISDIR}\Contrib\Graphics\Header\icon.bmp"
!define MUI_WELCOMEFINISHPAGE_BITMAP"${NSISDIR}\Contrib\Graphics\Wizard\img.bmp"
!define MUI_ABORTWARNING
!insertmacro MUI_PAGE_WELCOME
!insertmacro MUI_PAGE_LICENSE "${NSISDIR}\Docs\Modern UI\licensefile.txt"
!define MUI_PAGE_CUSTOMFUNCTION_SHOW GetButtonID ** <---in this function only one button event handler works, if two handlers are given , then installer crashes**
!insertmacro MUI_PAGE_DIRECTORY
!insertmacro MUI_PAGE_COMPONENTS
!insertmacro MUI_PAGE_INSTFILES
!insertmacro MUI_PAGE_FINISH
Function **CDRIVEPATH**
MessageBox MB_OK|MB_ICONEXCLAMATION "The Software will be installed in : C Drive"
FunctionEnd
Function **DDRIVEPATH**
MessageBox MB_OK|MB_ICONEXCLAMATION "The Software will be installed in : D Drive"
FunctionEnd
;--------------------------------
Function **GetButtonID**
GetFunctionAddress $R2 CDRIVEPATH
ButtonEvent::AddEventHandler ${IDC_BUTTON_CDRIVEPATH} $R2
;when this second button handler is given ,then installer autoexits as soon as it has to show the Directory MUI Page dialog:
GetFunctionAddress $R3 DDRIVEPATH
ButtonEvent::AddEventHandler ${IDC_BUTTON_DDRIVEPATH} $R3
FunctionEnd
;------------------------------------------------------------------
Section "INSTALL MAIN SOFTWARE"
SetOutPath $INSTDIR
File /r "myfolder\*.*"
SectionEnd
;------------------------------------------------------------------
