;old script 
; !define MUI_CUSTOMFUNCTION_COMPONENTS_LEAVE "CheckComponents"
; !insertmacro MUI_PAGE_COMPONENTS
 

;new script
 !insertmacro MUI_PAGE_COMPONENTS
 #CUSTOM PAGE
 Page custom CheckComponents

 
Function .onInit

  SectionGetFlags ${secLicense} $1
  IntOp $0 $0 & ${SECTION_OFF}
  SectionSetFlags ${secLicense} $1

  SectionGetFlags ${secDST} $0
  IntOp $0 $0 & ${SECTION_OFF}
  SectionSetFlags ${secDST} $0
  # !insertmacro SelectSection ${secDST}

  SectionGetFlags ${secEMD} $0
  IntOp $0 $0 & ${SECTION_OFF}
  SectionSetFlags ${secEMD} $0
  # !insertmacro UnselectSection ${secEMD}

  SectionGetFlags ${secHUS} $0
  IntOp $0 $0 & ${SECTION_OFF}
  SectionSetFlags ${secHUS} $0
  # !insertmacro UnselectSection ${secHUS}

  SectionGetFlags ${secJEF} $0
  IntOp $0 $0 & ${SECTION_OFF}
  SectionSetFlags ${secJEF} $0
  # !insertmacro UnselectSection ${secJEF}

  SectionGetFlags ${secPES} $0
  IntOp $0 $0 & ${SECTION_OFF}
  SectionSetFlags ${secPES} $0
  # !insertmacro UnselectSection ${secPES}

  SectionGetFlags ${secXXX} $0
  IntOp $0 $0 & ${SECTION_OFF}
  SectionSetFlags ${secXXX} $0
  # !insertmacro UnselectSection ${secXXX}

  Pop $0
FunctionEnd

;------------------------------------***-----------------
Function .onSelChange
  Push $0


!ifdef USE_SUBSECTION
  Push $2
  
  
  StrCpy $2 ${SF_SELECTED}
   SectionGetFlags ${secLicense} $0
  IntOp $2 $2 & $0
  
  SectionGetFlags ${secDST} $0
  IntOp $2 $2 & $0
  SectionGetFlags ${secEMD} $0
  IntOp $2 $2 & $0
  SectionGetFlags ${secEXP} $0
  IntOp $2 $2 & $0
  SectionGetFlags ${secHUS} $0
  IntOp $2 $2 & $0
  SectionGetFlags ${secJEF } $0
  IntOp $2 $2 & $0
  SectionGetFlags ${secPES} $0
  IntOp $2 $2 & $0
  SectionGetFlags ${secXXX} $0
  IntOp $2 $2 & $0
  StrCmp $2 0 skip
  
  
    SectionSetFlags ${secLicense} 1
    SectionSetFlags ${secDST} 0
    SectionSetFlags ${secEMD} 0
    SectionSetFlags ${secHUS} 0
    SectionSetFlags ${secJEF} 0
    SectionSetFlags ${secPES} 0
    SectionSetFlags ${secXXX} 0
    skip:
     Pop $2
!endif

  ; Turn off old selected section
  SectionGetFlags $1 $0
  IntOp $0 $0 & ${SECTION_OFF}
  SectionSetFlags $1 $0
  # !insertmacro UnselectSection $1

  ; Now remember the current selection
  Push $2
  StrCpy $2 $1

  SectionGetFlags ${secDST} $0
  IntOp $0 $0 & ${SF_SELECTED}
  IntCmp $0 ${SF_SELECTED} 0 +2 +2
    StrCpy $1 ${secDST}

  SectionGetFlags ${secEMD} $0
  IntOp $0 $0 & ${SF_SELECTED}
  IntCmp $0 ${SF_SELECTED} 0 +2 +2
    StrCpy $1 ${secEMD}

    SectionGetFlags ${secHUS} $0
  IntOp $0 $0 & ${SF_SELECTED}
  IntCmp $0 ${SF_SELECTED} 0 +2 +2
    StrCpy $1 ${secHUS}

  SectionGetFlags ${secJEF} $0
  IntOp $0 $0 & ${SF_SELECTED}
  IntCmp $0 ${SF_SELECTED} 0 +2 +2
    StrCpy $1 ${secJEF}

  SectionGetFlags ${secPES} $0
  IntOp $0 $0 & ${SF_SELECTED}
  IntCmp $0 ${SF_SELECTED} 0 +2 +2
    StrCpy $1 ${secPES}

  SectionGetFlags ${secXXX} $0
  IntOp $0 $0 & ${SF_SELECTED}
  IntCmp $0 ${SF_SELECTED} 0 +2 +2
    StrCpy $1 ${secXXX}
  StrCmp $2 $1 0 +5

  ; selection hasn't changed
  SectionGetFlags $1 $0
   IntOp $0 $0 | ${SF_SELECTED}
    SectionSetFlags $1 $0
    # !insertmacro SelectSection $1
  Pop $2
  Pop $0
FunctionEnd

Function CheckComponents

SectionGetFlags ${SecDST} $R0
StrCmp $R0 1 done

SectionGetFlags ${SecEMD} $R0
StrCmp $R0 1 done

SectionGetFlags ${SecHUS} $R0
StrCmp $R0 1 done

SectionGetFlags ${SecJEF} $R0
StrCmp $R0 1 done

SectionGetFlags ${SecPES} $R0
StrCmp $R0 1 done

SectionGetFlags ${SecXXX} $R0
StrCmp $R0 1 done

MessageBox MB_OK|MB_ICONEXCLAMATION "Please select a component to install!"
Abort ;goes back to page

done: ;if component was selected
FunctionEnd