dirpage plugin and UI interraction

[kojiroh]

After using the plugin dirpage with directory page, i test the string entered in the directory field and if the test is wrong, i want to simulate a click on the "back' button or if possible show the directory page again.

So my question is how to simulate a click on the back button or how to show the MUI_PAGE_DIRECTORY

I put the code here for more explication

code:


!macro MUI_FUNCTION_DIRECTORYPAGE PRE SHOW LEAVE



  Function "${PRE}"

    StrCmp $MUI_INSTALL_ABORTED 1 0 +2

      Abort

      

    ${If} $MUI_USE_MAINTENANCE_CMDLINE == "TRUE"

      !ifdef MUI_SKIP_DIRECTORY_PAGE

        Abort

      !else

        !ifdef MUI_DISABLE_FIRST_BACKBUTTON

          GetDlgItem $MUI_TEMP1 $HWNDPARENT 3

          EnableWindow $MUI_TEMP1 0

          !undef MUI_DISABLE_FIRST_BACKBUTTON

        !else ifdef MUI_HIDE_FIRST_BACKBUTTON

          GetDlgItem $MUI_TEMP1 $HWNDPARENT 3

          ShowWindow $MUI_TEMP1 0

          !undef MUI_HIDE_FIRST_BACKBUTTON

        !endif

      !endif

    ${EndIf}

    

    !insertmacro MUI_HEADER_TEXT_PAGE $(MUI_${MUI_PAGE_UNINSTALLER_PREFIX}TEXT_DIRECTORY_TITLE) $(MUI_${MUI_PAGE_UNINSTALLER_PREFIX}TEXT_DIRECTORY_SUBTITLE)

    

    !ifdef MUI_USE_DIRPAGEDLL

	# Variable for define the default instdir path

	Var /GLOBAL DEFAULT_INSTDIR

	

	${IF} $DEFAULT_INSTDIR == ""

		StrCpy $DEFAULT_INSTDIR "$INSTDIR"

	${ENDIF}

	

	# if $instdir is empty, re-set the default path

	${IF} $INSTDIR == ""

		StrCpy $INSTDIR "$DEFAULT_INSTDIR"

	${ENDIF}



	InitPluginsDir

	dirpage::show /noicon /spaceavailtext "%d: Total: %t\tFree: %f" /text "$(^DirBrowseText)" $INSTDIR

	Pop $R0  ; Get result



	StrCmp $R0 "success" ok

	StrCmp $R0 "cancel" skip

	MessageBox MB_OK "Dir Page error: $R0"

	skip:

	Return

	ok:

	

	;Pop $INSTDIR

	pop $R1

        

        ${IF} $R1 == ""

           ; here the code for emulate the back button click

or showing the directory page

        ${ENDIF}	



    !else

      !insertmacro MUI_PAGE_FUNCTION_CUSTOM PRE

    !endif

  FunctionEnd



  !ifndef MUI_USE_DIRPAGEDLL

    Function "${SHOW}"

      !insertmacro MUI_PAGE_FUNCTION_CUSTOM SHOW

    FunctionEnd

  !endif



  Function "${LEAVE}"

    !insertmacro MUI_PAGE_FUNCTION_CUSTOM LEAVE

    messagebox mb_ok "leave end"

  FunctionEnd



!macroend

Thanks for your answer

[Afrow UK]

You can't call that in the pre function of a page.
You can to call it in a custom page show function:

Page Custom CustomPageShow

Function CustomPageShow
...
FunctionEnd

Stu