SQLDataSourcesA

関数

利用可能なODBCデータソースを列挙する。

DLLODBC32.dll文字セットANSI (-A)呼出規約winapi

シグネチャ

// ODBC32.dll  (ANSI / -A)
#include <windows.h>

SHORT SQLDataSourcesA(
    void* henv,
    WORD fDirection,
    BYTE* szDSN,   // optional
    SHORT cbDSNMax,
    SHORT* pcbDSN,
    BYTE* szDescription,   // optional
    SHORT cbDescriptionMax,
    SHORT* pcbDescription
);

パラメーター

名前	型	方向
henv	void*	inout
fDirection	WORD	in
szDSN	BYTE*	outoptional
cbDSNMax	SHORT	in
pcbDSN	SHORT*	inout
szDescription	BYTE*	outoptional
cbDescriptionMax	SHORT	in
pcbDescription	SHORT*	inout

戻り値の型: SHORT

各言語での呼び出し定義

// ODBC32.dll  (ANSI / -A)
#include <windows.h>

SHORT SQLDataSourcesA(
    void* henv,
    WORD fDirection,
    BYTE* szDSN,   // optional
    SHORT cbDSNMax,
    SHORT* pcbDSN,
    BYTE* szDescription,   // optional
    SHORT cbDescriptionMax,
    SHORT* pcbDescription
);

[DllImport("ODBC32.dll", CharSet = CharSet.Ansi, ExactSpelling = true)]
static extern short SQLDataSourcesA(
    IntPtr henv,   // void* in/out
    ushort fDirection,   // WORD
    IntPtr szDSN,   // BYTE* optional, out
    short cbDSNMax,   // SHORT
    ref short pcbDSN,   // SHORT* in/out
    IntPtr szDescription,   // BYTE* optional, out
    short cbDescriptionMax,   // SHORT
    ref short pcbDescription   // SHORT* in/out
);

<DllImport("ODBC32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function SQLDataSourcesA(
    henv As IntPtr,   ' void* in/out
    fDirection As UShort,   ' WORD
    szDSN As IntPtr,   ' BYTE* optional, out
    cbDSNMax As Short,   ' SHORT
    ByRef pcbDSN As Short,   ' SHORT* in/out
    szDescription As IntPtr,   ' BYTE* optional, out
    cbDescriptionMax As Short,   ' SHORT
    ByRef pcbDescription As Short   ' SHORT* in/out
) As Short
End Function

' henv : void* in/out
' fDirection : WORD
' szDSN : BYTE* optional, out
' cbDSNMax : SHORT
' pcbDSN : SHORT* in/out
' szDescription : BYTE* optional, out
' cbDescriptionMax : SHORT
' pcbDescription : SHORT* in/out
Declare PtrSafe Function SQLDataSourcesA Lib "odbc32" ( _
    ByVal henv As LongPtr, _
    ByVal fDirection As Integer, _
    ByVal szDSN As LongPtr, _
    ByVal cbDSNMax As Integer, _
    ByRef pcbDSN As Integer, _
    ByVal szDescription As LongPtr, _
    ByVal cbDescriptionMax As Integer, _
    ByRef pcbDescription As Integer) As Integer
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SQLDataSourcesA = ctypes.windll.odbc32.SQLDataSourcesA
SQLDataSourcesA.restype = ctypes.c_short
SQLDataSourcesA.argtypes = [
    ctypes.POINTER(None),  # henv : void* in/out
    ctypes.c_ushort,  # fDirection : WORD
    ctypes.POINTER(ctypes.c_ubyte),  # szDSN : BYTE* optional, out
    ctypes.c_short,  # cbDSNMax : SHORT
    ctypes.POINTER(ctypes.c_short),  # pcbDSN : SHORT* in/out
    ctypes.POINTER(ctypes.c_ubyte),  # szDescription : BYTE* optional, out
    ctypes.c_short,  # cbDescriptionMax : SHORT
    ctypes.POINTER(ctypes.c_short),  # pcbDescription : SHORT* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ODBC32.dll')
SQLDataSourcesA = Fiddle::Function.new(
  lib['SQLDataSourcesA'],
  [
    Fiddle::TYPE_VOIDP,  # henv : void* in/out
    -Fiddle::TYPE_SHORT,  # fDirection : WORD
    Fiddle::TYPE_VOIDP,  # szDSN : BYTE* optional, out
    Fiddle::TYPE_SHORT,  # cbDSNMax : SHORT
    Fiddle::TYPE_VOIDP,  # pcbDSN : SHORT* in/out
    Fiddle::TYPE_VOIDP,  # szDescription : BYTE* optional, out
    Fiddle::TYPE_SHORT,  # cbDescriptionMax : SHORT
    Fiddle::TYPE_VOIDP,  # pcbDescription : SHORT* in/out
  ],
  Fiddle::TYPE_SHORT)

#[link(name = "odbc32")]
extern "system" {
    fn SQLDataSourcesA(
        henv: *mut (),  // void* in/out
        fDirection: u16,  // WORD
        szDSN: *mut u8,  // BYTE* optional, out
        cbDSNMax: i16,  // SHORT
        pcbDSN: *mut i16,  // SHORT* in/out
        szDescription: *mut u8,  // BYTE* optional, out
        cbDescriptionMax: i16,  // SHORT
        pcbDescription: *mut i16  // SHORT* in/out
    ) -> i16;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ODBC32.dll", CharSet = CharSet.Ansi)]
public static extern short SQLDataSourcesA(IntPtr henv, ushort fDirection, IntPtr szDSN, short cbDSNMax, ref short pcbDSN, IntPtr szDescription, short cbDescriptionMax, ref short pcbDescription);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ODBC32_SQLDataSourcesA' -Namespace Win32 -PassThru
# $api::SQLDataSourcesA(henv, fDirection, szDSN, cbDSNMax, pcbDSN, szDescription, cbDescriptionMax, pcbDescription)

#uselib "ODBC32.dll"
#func global SQLDataSourcesA "SQLDataSourcesA" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; SQLDataSourcesA henv, fDirection, varptr(szDSN), cbDSNMax, varptr(pcbDSN), varptr(szDescription), cbDescriptionMax, varptr(pcbDescription)   ; 戻り値は stat
; henv : void* in/out -> "sptr"
; fDirection : WORD -> "sptr"
; szDSN : BYTE* optional, out -> "sptr"
; cbDSNMax : SHORT -> "sptr"
; pcbDSN : SHORT* in/out -> "sptr"
; szDescription : BYTE* optional, out -> "sptr"
; cbDescriptionMax : SHORT -> "sptr"
; pcbDescription : SHORT* in/out -> "sptr"
; ※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 SQLDataSourcesA "SQLDataSourcesA" sptr, int, var, int, var, var, int, var
; res = SQLDataSourcesA(henv, fDirection, szDSN, cbDSNMax, pcbDSN, szDescription, cbDescriptionMax, pcbDescription)
; henv : void* in/out -> "sptr"
; fDirection : WORD -> "int"
; szDSN : BYTE* optional, out -> "var"
; cbDSNMax : SHORT -> "int"
; pcbDSN : SHORT* in/out -> "var"
; szDescription : BYTE* optional, out -> "var"
; cbDescriptionMax : SHORT -> "int"
; pcbDescription : SHORT* in/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 SQLDataSourcesA "SQLDataSourcesA" sptr, int, sptr, int, sptr, sptr, int, sptr
; res = SQLDataSourcesA(henv, fDirection, varptr(szDSN), cbDSNMax, varptr(pcbDSN), varptr(szDescription), cbDescriptionMax, varptr(pcbDescription))
; henv : void* in/out -> "sptr"
; fDirection : WORD -> "int"
; szDSN : BYTE* optional, out -> "sptr"
; cbDSNMax : SHORT -> "int"
; pcbDSN : SHORT* in/out -> "sptr"
; szDescription : BYTE* optional, out -> "sptr"
; cbDescriptionMax : SHORT -> "int"
; pcbDescription : SHORT* in/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 SQLDataSourcesA(void* henv, WORD fDirection, BYTE* szDSN, SHORT cbDSNMax, SHORT* pcbDSN, BYTE* szDescription, SHORT cbDescriptionMax, SHORT* pcbDescription)
#uselib "ODBC32.dll"
#cfunc global SQLDataSourcesA "SQLDataSourcesA" intptr, int, var, int, var, var, int, var
; res = SQLDataSourcesA(henv, fDirection, szDSN, cbDSNMax, pcbDSN, szDescription, cbDescriptionMax, pcbDescription)
; henv : void* in/out -> "intptr"
; fDirection : WORD -> "int"
; szDSN : BYTE* optional, out -> "var"
; cbDSNMax : SHORT -> "int"
; pcbDSN : SHORT* in/out -> "var"
; szDescription : BYTE* optional, out -> "var"
; cbDescriptionMax : SHORT -> "int"
; pcbDescription : SHORT* in/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 SQLDataSourcesA(void* henv, WORD fDirection, BYTE* szDSN, SHORT cbDSNMax, SHORT* pcbDSN, BYTE* szDescription, SHORT cbDescriptionMax, SHORT* pcbDescription)
#uselib "ODBC32.dll"
#cfunc global SQLDataSourcesA "SQLDataSourcesA" intptr, int, intptr, int, intptr, intptr, int, intptr
; res = SQLDataSourcesA(henv, fDirection, varptr(szDSN), cbDSNMax, varptr(pcbDSN), varptr(szDescription), cbDescriptionMax, varptr(pcbDescription))
; henv : void* in/out -> "intptr"
; fDirection : WORD -> "int"
; szDSN : BYTE* optional, out -> "intptr"
; cbDSNMax : SHORT -> "int"
; pcbDSN : SHORT* in/out -> "intptr"
; szDescription : BYTE* optional, out -> "intptr"
; cbDescriptionMax : SHORT -> "int"
; pcbDescription : SHORT* in/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")
	procSQLDataSourcesA = odbc32.NewProc("SQLDataSourcesA")
)

// henv (void* in/out), fDirection (WORD), szDSN (BYTE* optional, out), cbDSNMax (SHORT), pcbDSN (SHORT* in/out), szDescription (BYTE* optional, out), cbDescriptionMax (SHORT), pcbDescription (SHORT* in/out)
r1, _, err := procSQLDataSourcesA.Call(
	uintptr(henv),
	uintptr(fDirection),
	uintptr(szDSN),
	uintptr(cbDSNMax),
	uintptr(pcbDSN),
	uintptr(szDescription),
	uintptr(cbDescriptionMax),
	uintptr(pcbDescription),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // SHORT

function SQLDataSourcesA(
  henv: Pointer;   // void* in/out
  fDirection: Word;   // WORD
  szDSN: Pointer;   // BYTE* optional, out
  cbDSNMax: Smallint;   // SHORT
  pcbDSN: Pointer;   // SHORT* in/out
  szDescription: Pointer;   // BYTE* optional, out
  cbDescriptionMax: Smallint;   // SHORT
  pcbDescription: Pointer   // SHORT* in/out
): Smallint; stdcall;
  external 'ODBC32.dll' name 'SQLDataSourcesA';

result := DllCall("ODBC32\SQLDataSourcesA"
    , "Ptr", henv   ; void* in/out
    , "UShort", fDirection   ; WORD
    , "Ptr", szDSN   ; BYTE* optional, out
    , "Short", cbDSNMax   ; SHORT
    , "Ptr", pcbDSN   ; SHORT* in/out
    , "Ptr", szDescription   ; BYTE* optional, out
    , "Short", cbDescriptionMax   ; SHORT
    , "Ptr", pcbDescription   ; SHORT* in/out
    , "Short")   ; return: SHORT

●SQLDataSourcesA(henv, fDirection, szDSN, cbDSNMax, pcbDSN, szDescription, cbDescriptionMax, pcbDescription) = DLL("ODBC32.dll", "int SQLDataSourcesA(void*, int, void*, int, void*, void*, int, void*)")
# 呼び出し: SQLDataSourcesA(henv, fDirection, szDSN, cbDSNMax, pcbDSN, szDescription, cbDescriptionMax, pcbDescription)
# henv : void* in/out -> "void*"
# fDirection : WORD -> "int"
# szDSN : BYTE* optional, out -> "void*"
# cbDSNMax : SHORT -> "int"
# pcbDSN : SHORT* in/out -> "void*"
# szDescription : BYTE* optional, out -> "void*"
# cbDescriptionMax : SHORT -> "int"
# pcbDescription : SHORT* in/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)。