Reference/GetInstDirError

From NSIS Wiki

GetInstDirError

user_var(error output)

Use in the leave function of a directory page. Reads the flag set if 'DirVerify leave' is used. Possible values:

0: No error

1: Invalid installation directory

2: Not enough space on installation drive

!include LogicLib.nsh
PageEx directory
  DirVerify leave
  PageCallbacks "" "" dirLeave
PageExEnd
 
Function dirLeave
  GetInstDirError $0
  ${Switch} $0
    ${Case} 0
      MessageBox MB_OK "valid installation directory"
      ${Break}
    ${Case} 1
      MessageBox MB_OK "invalid installation directory!"
      Abort
      ${Break}
    ${Case} 2
      MessageBox MB_OK "not enough free space!"
      Abort
      ${Break}
  ${EndSwitch}
FunctionEnd

Command introduced with NSIS v2.0

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