SQLDataSourcesW

関数

利用可能なODBCデータソースを順に列挙する(Unicode)。

DLLODBC32.dll文字セットUnicode (-W)呼出規約winapi

シグネチャ

// ODBC32.dll  (Unicode / -W)
#include <windows.h>

SHORT SQLDataSourcesW(
    void* henv,
    WORD fDirection,
    WORD* szDSN,   // optional
    SHORT cchDSNMax,
    SHORT* pcchDSN,   // optional
    WORD* wszDescription,   // optional
    SHORT cchDescriptionMax,
    SHORT* pcchDescription   // optional
);

パラメーター

名前	型	方向
henv	void*	inout
fDirection	WORD	in
szDSN	WORD*	outoptional
cchDSNMax	SHORT	in
pcchDSN	SHORT*	outoptional
wszDescription	WORD*	outoptional
cchDescriptionMax	SHORT	in
pcchDescription	SHORT*	outoptional

戻り値の型: SHORT

各言語での呼び出し定義

// ODBC32.dll  (Unicode / -W)
#include <windows.h>

SHORT SQLDataSourcesW(
    void* henv,
    WORD fDirection,
    WORD* szDSN,   // optional
    SHORT cchDSNMax,
    SHORT* pcchDSN,   // optional
    WORD* wszDescription,   // optional
    SHORT cchDescriptionMax,
    SHORT* pcchDescription   // optional
);

[DllImport("ODBC32.dll", CharSet = CharSet.Unicode, ExactSpelling = true)]
static extern short SQLDataSourcesW(
    IntPtr henv,   // void* in/out
    ushort fDirection,   // WORD
    IntPtr szDSN,   // WORD* optional, out
    short cchDSNMax,   // SHORT
    IntPtr pcchDSN,   // SHORT* optional, out
    IntPtr wszDescription,   // WORD* optional, out
    short cchDescriptionMax,   // SHORT
    IntPtr pcchDescription   // SHORT* optional, out
);

<DllImport("ODBC32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function SQLDataSourcesW(
    henv As IntPtr,   ' void* in/out
    fDirection As UShort,   ' WORD
    szDSN As IntPtr,   ' WORD* optional, out
    cchDSNMax As Short,   ' SHORT
    pcchDSN As IntPtr,   ' SHORT* optional, out
    wszDescription As IntPtr,   ' WORD* optional, out
    cchDescriptionMax As Short,   ' SHORT
    pcchDescription As IntPtr   ' SHORT* optional, out
) As Short
End Function

' henv : void* in/out
' fDirection : WORD
' szDSN : WORD* optional, out
' cchDSNMax : SHORT
' pcchDSN : SHORT* optional, out
' wszDescription : WORD* optional, out
' cchDescriptionMax : SHORT
' pcchDescription : SHORT* optional, out
Declare PtrSafe Function SQLDataSourcesW Lib "odbc32" ( _
    ByVal henv As LongPtr, _
    ByVal fDirection As Integer, _
    ByVal szDSN As LongPtr, _
    ByVal cchDSNMax As Integer, _
    ByVal pcchDSN As LongPtr, _
    ByVal wszDescription As LongPtr, _
    ByVal cchDescriptionMax As Integer, _
    ByVal pcchDescription As LongPtr) As Integer
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SQLDataSourcesW = ctypes.windll.odbc32.SQLDataSourcesW
SQLDataSourcesW.restype = ctypes.c_short
SQLDataSourcesW.argtypes = [
    ctypes.POINTER(None),  # henv : void* in/out
    ctypes.c_ushort,  # fDirection : WORD
    ctypes.POINTER(ctypes.c_ushort),  # szDSN : WORD* optional, out
    ctypes.c_short,  # cchDSNMax : SHORT
    ctypes.POINTER(ctypes.c_short),  # pcchDSN : SHORT* optional, out
    ctypes.POINTER(ctypes.c_ushort),  # wszDescription : WORD* optional, out
    ctypes.c_short,  # cchDescriptionMax : SHORT
    ctypes.POINTER(ctypes.c_short),  # pcchDescription : SHORT* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ODBC32.dll')
SQLDataSourcesW = Fiddle::Function.new(
  lib['SQLDataSourcesW'],
  [
    Fiddle::TYPE_VOIDP,  # henv : void* in/out
    -Fiddle::TYPE_SHORT,  # fDirection : WORD
    Fiddle::TYPE_VOIDP,  # szDSN : WORD* optional, out
    Fiddle::TYPE_SHORT,  # cchDSNMax : SHORT
    Fiddle::TYPE_VOIDP,  # pcchDSN : SHORT* optional, out
    Fiddle::TYPE_VOIDP,  # wszDescription : WORD* optional, out
    Fiddle::TYPE_SHORT,  # cchDescriptionMax : SHORT
    Fiddle::TYPE_VOIDP,  # pcchDescription : SHORT* optional, out
  ],
  Fiddle::TYPE_SHORT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "odbc32")]
extern "system" {
    fn SQLDataSourcesW(
        henv: *mut (),  // void* in/out
        fDirection: u16,  // WORD
        szDSN: *mut u16,  // WORD* optional, out
        cchDSNMax: i16,  // SHORT
        pcchDSN: *mut i16,  // SHORT* optional, out
        wszDescription: *mut u16,  // WORD* optional, out
        cchDescriptionMax: i16,  // SHORT
        pcchDescription: *mut i16  // SHORT* optional, out
    ) -> i16;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ODBC32.dll", CharSet = CharSet.Unicode)]
public static extern short SQLDataSourcesW(IntPtr henv, ushort fDirection, IntPtr szDSN, short cchDSNMax, IntPtr pcchDSN, IntPtr wszDescription, short cchDescriptionMax, IntPtr pcchDescription);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ODBC32_SQLDataSourcesW' -Namespace Win32 -PassThru
# $api::SQLDataSourcesW(henv, fDirection, szDSN, cchDSNMax, pcchDSN, wszDescription, cchDescriptionMax, pcchDescription)

#uselib "ODBC32.dll"
#func global SQLDataSourcesW "SQLDataSourcesW" wptr, wptr, wptr, wptr, wptr, wptr, wptr, wptr
; SQLDataSourcesW henv, fDirection, varptr(szDSN), cchDSNMax, varptr(pcchDSN), varptr(wszDescription), cchDescriptionMax, varptr(pcchDescription)   ; 戻り値は stat
; henv : void* in/out -> "wptr"
; fDirection : WORD -> "wptr"
; szDSN : WORD* optional, out -> "wptr"
; cchDSNMax : SHORT -> "wptr"
; pcchDSN : SHORT* optional, out -> "wptr"
; wszDescription : WORD* optional, out -> "wptr"
; cchDescriptionMax : SHORT -> "wptr"
; pcchDescription : SHORT* optional, out -> "wptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

出力引数:

#uselib "ODBC32.dll"
#cfunc global SQLDataSourcesW "SQLDataSourcesW" sptr, int, var, int, var, var, int, var
; res = SQLDataSourcesW(henv, fDirection, szDSN, cchDSNMax, pcchDSN, wszDescription, cchDescriptionMax, pcchDescription)
; henv : void* in/out -> "sptr"
; fDirection : WORD -> "int"
; szDSN : WORD* optional, out -> "var"
; cchDSNMax : SHORT -> "int"
; pcchDSN : SHORT* optional, out -> "var"
; wszDescription : WORD* optional, out -> "var"
; cchDescriptionMax : SHORT -> "int"
; pcchDescription : SHORT* optional, out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。#uselib "ODBC32.dll"
#cfunc global SQLDataSourcesW "SQLDataSourcesW" sptr, int, sptr, int, sptr, sptr, int, sptr
; res = SQLDataSourcesW(henv, fDirection, varptr(szDSN), cchDSNMax, varptr(pcchDSN), varptr(wszDescription), cchDescriptionMax, varptr(pcchDescription))
; henv : void* in/out -> "sptr"
; fDirection : WORD -> "int"
; szDSN : WORD* optional, out -> "sptr"
; cchDSNMax : SHORT -> "int"
; pcchDSN : SHORT* optional, out -> "sptr"
; wszDescription : WORD* optional, out -> "sptr"
; cchDescriptionMax : SHORT -> "int"
; pcchDescription : SHORT* optional, out -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; SHORT SQLDataSourcesW(void* henv, WORD fDirection, WORD* szDSN, SHORT cchDSNMax, SHORT* pcchDSN, WORD* wszDescription, SHORT cchDescriptionMax, SHORT* pcchDescription)
#uselib "ODBC32.dll"
#cfunc global SQLDataSourcesW "SQLDataSourcesW" intptr, int, var, int, var, var, int, var
; res = SQLDataSourcesW(henv, fDirection, szDSN, cchDSNMax, pcchDSN, wszDescription, cchDescriptionMax, pcchDescription)
; henv : void* in/out -> "intptr"
; fDirection : WORD -> "int"
; szDSN : WORD* optional, out -> "var"
; cchDSNMax : SHORT -> "int"
; pcchDSN : SHORT* optional, out -> "var"
; wszDescription : WORD* optional, out -> "var"
; cchDescriptionMax : SHORT -> "int"
; pcchDescription : SHORT* optional, out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。; SHORT SQLDataSourcesW(void* henv, WORD fDirection, WORD* szDSN, SHORT cchDSNMax, SHORT* pcchDSN, WORD* wszDescription, SHORT cchDescriptionMax, SHORT* pcchDescription)
#uselib "ODBC32.dll"
#cfunc global SQLDataSourcesW "SQLDataSourcesW" intptr, int, intptr, int, intptr, intptr, int, intptr
; res = SQLDataSourcesW(henv, fDirection, varptr(szDSN), cchDSNMax, varptr(pcchDSN), varptr(wszDescription), cchDescriptionMax, varptr(pcchDescription))
; henv : void* in/out -> "intptr"
; fDirection : WORD -> "int"
; szDSN : WORD* optional, out -> "intptr"
; cchDSNMax : SHORT -> "int"
; pcchDSN : SHORT* optional, out -> "intptr"
; wszDescription : WORD* optional, out -> "intptr"
; cchDescriptionMax : SHORT -> "int"
; pcchDescription : SHORT* optional, out -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	odbc32 = windows.NewLazySystemDLL("ODBC32.dll")
	procSQLDataSourcesW = odbc32.NewProc("SQLDataSourcesW")
)

// henv (void* in/out), fDirection (WORD), szDSN (WORD* optional, out), cchDSNMax (SHORT), pcchDSN (SHORT* optional, out), wszDescription (WORD* optional, out), cchDescriptionMax (SHORT), pcchDescription (SHORT* optional, out)
r1, _, err := procSQLDataSourcesW.Call(
	uintptr(henv),
	uintptr(fDirection),
	uintptr(szDSN),
	uintptr(cchDSNMax),
	uintptr(pcchDSN),
	uintptr(wszDescription),
	uintptr(cchDescriptionMax),
	uintptr(pcchDescription),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // SHORT

function SQLDataSourcesW(
  henv: Pointer;   // void* in/out
  fDirection: Word;   // WORD
  szDSN: Pointer;   // WORD* optional, out
  cchDSNMax: Smallint;   // SHORT
  pcchDSN: Pointer;   // SHORT* optional, out
  wszDescription: Pointer;   // WORD* optional, out
  cchDescriptionMax: Smallint;   // SHORT
  pcchDescription: Pointer   // SHORT* optional, out
): Smallint; stdcall;
  external 'ODBC32.dll' name 'SQLDataSourcesW';

result := DllCall("ODBC32\SQLDataSourcesW"
    , "Ptr", henv   ; void* in/out
    , "UShort", fDirection   ; WORD
    , "Ptr", szDSN   ; WORD* optional, out
    , "Short", cchDSNMax   ; SHORT
    , "Ptr", pcchDSN   ; SHORT* optional, out
    , "Ptr", wszDescription   ; WORD* optional, out
    , "Short", cchDescriptionMax   ; SHORT
    , "Ptr", pcchDescription   ; SHORT* optional, out
    , "Short")   ; return: SHORT

●SQLDataSourcesW(henv, fDirection, szDSN, cchDSNMax, pcchDSN, wszDescription, cchDescriptionMax, pcchDescription) = DLL("ODBC32.dll", "int SQLDataSourcesW(void*, int, void*, int, void*, void*, int, void*)")
# 呼び出し: SQLDataSourcesW(henv, fDirection, szDSN, cchDSNMax, pcchDSN, wszDescription, cchDescriptionMax, pcchDescription)
# henv : void* in/out -> "void*"
# fDirection : WORD -> "int"
# szDSN : WORD* optional, out -> "void*"
# cchDSNMax : SHORT -> "int"
# pcchDSN : SHORT* optional, out -> "void*"
# wszDescription : WORD* optional, out -> "void*"
# cchDescriptionMax : SHORT -> "int"
# pcchDescription : SHORT* optional, out -> "void*"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。