如何在 NSIS 脚本中定义多个目录变量？

如何解决如何在 NSIS 脚本中定义多个目录变量？

请注意，我按照 here 的描述创建了一个没有问题的变量，但是当我尝试创建第二个变量时，出现此错误：

!define: "MUI_DIRECTORYPAGE_VARIABLE" already defined!

这是我为单个变量设置的：

Var HW_DATA_DIR
!define MUI_DIRECTORYPAGE_VARIABLE $HW_DATA_DIR
// ...
!define HW_DATA "HW-Data"

## This is the title on the MyApp Directory page
!define MUI_DIRECTORYPAGE_TEXT_TOP "$(MUI_DIRECTORYPAGE_TEXT_TOP_HW)"

;Directory for App files and where config.dat will point to
!define MUI_PAGE_CUSTOMFUNCTION_PRE wel_pre
!define MUI_PAGE_CUSTOMFUNCTION_SHOW dir_pre   
!insertmacro MUI_PAGE_DIRECTORY
!insertmacro MUI_PAGE_INSTFILES

LangString MUI_DIRECTORYPAGE_TEXT_TOP_HW ${LANG_ENGLSH} "Setup will install \
${HW_DATA} in the following folder..."

## Sections Group 0
Function wel_pre
  StrCpy $APP_DIR "C:\${HW_DATA}"
     strcmp '$0' '1' noabort
     messagebox mb_yesno|mb_defbutton2|mb_iconquestion "Leave MyApp directories at default values of C:\${HW_DATA} and C:\${HW_WORKSPACE}?" idno noabort
     strcpy $0 2
     abort
   noabort:
     strcpy $0 1             
Functionend

Function dir_pre
     GetDlgItem $1 $HWNDPARENT 1037
     CreateFont $2 "$(^Font)" "8" "700"
     SendMessage $1 ${WM_SETFONT} $2 0
     SetCtlColors $1  '0x000000' '0xFFFFFF'

     GetDlgItem $1 $HWNDPARENT 1038
     CreateFont $2 "$(^Font)" "8" ""
     SendMessage $1 ${WM_SETFONT} $2 0
     SetCtlColors $1  '0x000000' '0xFFFFFF'                       
Functionend

!define PROG0_InstDir    "C:\${HW_DATA}"
!define PROG0_StartIndex ${PROG0}
!define PROG0_EndIndex   ${SEC0} 

SectionGroup /e "MyApp" PROG0 
Section "Main" SEC0
    CreateDirectory "$HW_DATA"
    CreateDirectory "$HW_DATA\Plugins"
    CreateDirectory "$HW_DATA\Plugins\ComputePlugin"
    CreateDirectory "$HW_DATA\Plugins\ExtensionPlugin"                                       

    File /oname=$HW_DATA\Plugins\ComputePlugin\computeplugin.xplot.dll computeplugin.xplot.dll
    File /oname=$HW_DATA\Plugins\ExtensionPlugin\hwProxyInterface.MyProApp.dll hwProxyInterface.MyProApp.dll   
SectionEnd

这是我尝试添加第二个变量的方式：

Var HW_DATA_DIR
!define MUI_DIRECTORYPAGE_VARIABLE $HW_DATA_DIR
Var HW_WORKSPACE_DIR
!define MUI_DIRECTORYPAGE_VARIABLE $HW_WORKSPACE_DIR
// ...
!define HW_DATA "HW-Data"
!define HW_WORKSPACE "HW-Workspaces"  

## This is the title on the MyApp Directory page
!define MUI_DIRECTORYPAGE_TEXT_TOP "$(MUI_DIRECTORYPAGE_TEXT_TOP_HW)"

;Directory for MyApp files and where config.dat will point to
!define MUI_PAGE_CUSTOMFUNCTION_PRE wel_pre
!define MUI_PAGE_CUSTOMFUNCTION_SHOW dir_pre   
!insertmacro MUI_PAGE_DIRECTORY
!insertmacro MUI_PAGE_INSTFILES
!insertmacro MUI_PAGE_DIRECTORY
!insertmacro MUI_PAGE_INSTFILES

// ...

LangString MUI_DIRECTORYPAGE_TEXT_TOP_HW ${LANG_ENGLSH} "Setup will install \
${HW_DATA} in the following folder..."

## Sections Group 0
Function wel_pre
  StrCpy $HW_DATA_DIR "C:\${HW_DATA}" 
  StrCpy $$HW_WORKSPACE_DIR "C:\${HW_WORKSPACE}"  
     strcmp '$0' '1' noabort
     messagebox mb_yesno|mb_defbutton2|mb_iconquestion "Leave Headwave directories at default values of C:\${HW_DATA} and C:\${HW_WORKSPACE}?" idno noabort
     strcpy $0 2
     abort
   noabort:
     strcpy $0 1             
Functionend

Function dir_pre
     GetDlgItem $1 $HWNDPARENT 1037
     CreateFont $2 "$(^Font)" "8" "700"
     SendMessage $1 ${WM_SETFONT} $2 0
     SetCtlColors $1  '0x000000' '0xFFFFFF'

     GetDlgItem $1 $HWNDPARENT 1038
     CreateFont $2 "$(^Font)" "8" ""
     SendMessage $1 ${WM_SETFONT} $2 0
     SetCtlColors $1  '0x000000' '0xFFFFFF'                       
Functionend

!define PROG0_InstDir    "C:\${HW_DATA}"
!define PROG0_StartIndex ${PROG0}
!define PROG0_EndIndex   ${SEC0} 

SectionGroup /e "MyApp" PROG0 
Section "Main" SEC0
    CreateDirectory "$HW_DATA"
    CreateDirectory "$HW_DATA\Plugins"
    CreateDirectory "$HW_DATA\Plugins\ComputePlugin"
    CreateDirectory "$HW_DATA\Plugins\ExtensionPlugin"                                       

    File /oname=$HW_DATA\Plugins\ComputePlugin\computeplugin.xplot.dll computeplugin.xplot.dll
    File /oname=$HW_DATA\Plugins\ExtensionPlugin\hwProxyInterface.MyProApp.dll hwProxyInterface.MyProApp.dll   

    CreateDirectory "$HW_WORKSPACE_DIR"  
SectionEnd

另见 https://nsis.sourceforge.io/Demonstrating_Page%27s_Custom_Functions_Pre_Show_Leave

https://nsis.sourceforge.io/Two_installations_in_one_installer

有人有什么建议吗？在我的情况下，我碰巧需要为特定应用程序创建一个数据目录和一个工作区目录，使用默认值，但也允许用户将 DATA 目录和 WORKSPACE 目录更改为自定义目录，以防万一，例如，他们需要在网络驱动器上，而不是在默认的 C:\ 驱动器上。 TIA。

解决方法

目录变量定义是每页设置，必须在页面宏之前设置：

windowHeight