我想验证用户选择的安装路径。我不知道如何检查,所以它将看起来像这样。
现在我有这个问题。
Function StrStr
Exch $1 ; st=haystack,old$1, $1=needle
Exch ; st=old$1,haystack
Exch $2 ; st=old$1,old$2, $2=haystack
Push $3
Push $4
Push $5
StrLen $3 $1
StrCpy $4 0
; $1=needle
; $2=haystack
; $3=len(needle)
; $4=cnt
; $5=tmp
loop:
StrCpy $5 $2 $3 $4
StrCmp $5 $1 done
StrCmp $5 "" done
IntOp $4 $4 + 1
Goto loop
done:
StrCpy $1 $2 "" $4
Pop $5
Pop $4
Pop $3
Pop $2
Exch $1
FunctionEnd
Function .onVerifyInstDir
Push "$INSTDIR"
Push " "
Call StrStr
Pop $0
StrCpy $0 $0 1
StrCmp $0 " " 0 +2
Abort
FunctionEnd
当路径中有空格时,它拒绝安装。我需要修改这一点,使Program Files将是该规则的唯一例外。另外,打印错误信息会很有帮助
这个限制对我来说毫无意义。一些传统的应用程序不能处理路径中的空格,但这当然也包括Program Files文件夹(虽然这个文件夹是由程序文件组成的)。progra~1
黑客可以作为一个变通的方法 如果 短名生成是活动的)。)
NSIS没有特定的方法来直接在页面上显示错误警告信息,但你可以在用户界面中改变现有的文本或显示一个气球。
!include WinMessages.nsh
!define /IfNDef EM_SHOWBALLOONTIP 0x1503
!define /IfNDef EM_HIDEBALLOONTIP 0x1504
!define DIRPAGE_CHANGETEXT ; Remove this line to disable the text change
!define DIRPAGE_BALLOON ; Remove this line to disable the balloon
Function .onVerifyInstDir
FindWindow $9 "#32770" "" $HWNDPARENT
!ifdef DIRPAGE_CHANGETEXT
GetDlgItem $3 $9 1006 ; IDC_INTROTEXT
LockWindow on
!endif
StrCpy $1 0
loop:
StrCpy $2 $InstDir 1 $1
StrCmp $2 '' valid ; End of string
StrCmp $2 ' ' found_space
IntOp $1 $1 + 1
Goto loop
valid:
!ifdef DIRPAGE_CHANGETEXT
SetCtlColors $3 SYSCLR:18 SYSCLR:15
SendMessage $3 ${WM_SETTEXT} "" "STR:$(^DirText)"
LockWindow off
!endif
!ifdef DIRPAGE_BALLOON
GetDlgItem $3 $9 1019
SendMessage $3 ${EM_HIDEBALLOONTIP} "" "" ; Not required?
!endif
Return
found_space:
StrLen $1 "$ProgramFiles\"
StrCpy $2 "$InstDir\" $1
StrCmp $2 "$ProgramFiles\" valid
!ifdef DIRPAGE_CHANGETEXT
SetCtlColors $3 ff0000 transparent
SendMessage $3 ${WM_SETTEXT} "" "STR:Paths with spaces are not allowed, except for $ProgramFiles for some reason!"
LockWindow off
!endif
!ifdef DIRPAGE_BALLOON
GetDlgItem $3 $9 1019
System::Call '*(&l${NSIS_PTR_SIZE},w "Bad path!", w "Spaced not allowed in path!",p 3)p.r2'
SendMessage $3 ${EM_SHOWBALLOONTIP} "" $2 ; This will only work on XP and later (and you must use "XPStyle on")
System::Free $2
!endif
Abort
FunctionEnd
XPStyle on
Page Directory
下一步 "按钮在以下情况下被禁用 Abort
内称 .onVerifyInstDir
. 如果你想显示一个 MessageBox
当用户点击下一步时,你就不能调用 Abort
在 .onVerifyInstDir
,你将不得不使用页面离开函数回调(你必须再次验证路径,也许会调用 MessageBox
+Abort
).