pinvoke.net: Edit: kernel32.GetStringType

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Summary: The GetStringTypeEx API returns character information for the characters in the specified string pointer. Three types of character information can be retrieved, depending on the dwInfoType parameter.

!!!!C# Signature:
 [DllImport("kernel32.dll")]
 static extern bool GetStringTypeEx(uint Locale, uint dwInfoType,
   [MarshalAs(UnmanagedType.LPWStr)]String lpSrcStr, int cchSrc, [Out] ushort [] lpCharType);
!!!!VB Signature:
 Private Declare Unicode Function GetStringTypeEx Lib "kernel32" Alias "GetStringTypeExW" ( _
  ByVal Locale As Int32, ByVal dwInfoType As Int32, _
  ByVal lpSrcStr As String, ByVal cchSrc As Int32, _
  ByRef lpCharType As Int16) As Boolean
!!!!User-Defined Types:
None.

!!!!Notes:
None.

!!!!Tips & Tricks:
Please add some!

!!!!Sample Code:
 Public Const CT_TYPE1 As Int32 = &H1    ' Retrieves character type info
 Public Const CT_TYPE2 As Int32 = &H2    ' Retrieves bi-directional layout info
 Public Const CT_TYPE3 As Int32 = &H4    ' Retrieves text processing info

Public Enum CharTypeInfo As Integer
	AnsiPosix = CT_TYPE1
	BidirectionalLayout = CT_TYPE2
 	TextProcessing = CT_TYPE3
 End Enum

Public Function GetStringTypeEx(ByVal str As String, ByVal cti As CharTypeInfo) As Int16()

Dim APIRetVal As Boolean
         Dim CharTypeInfoArray(Len(str) - 1) As Int16

' No need to specify the Locale, the Unicode (W) version of GetStringTypeEx ignores it anyway
         APIRetVal = GetStringTypeEx(0, cti, str, Len(str), CharTypeInfoArray(0))

If (Not APIRetVal) Then
         		Throw New ApplicationException("GetStringTypeExError")
         End If

Return CharTypeInfoArray

End Function
!!!!Alternative Managed API:
Do you know one?  Please contribute it!

Documentation: GetStringTypeEx@msdn on MSDN