SQLDriversA

関数

インストール済みのODBCドライバとその属性を列挙する。

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 SQLDriversA(
    void* henv,
    WORD fDirection,
    BYTE* szDriverDesc,   // optional
    SHORT cbDriverDescMax,
    SHORT* pcbDriverDesc,   // optional
    BYTE* szDriverAttributes,   // optional
    SHORT cbDrvrAttrMax,
    SHORT* pcbDrvrAttr   // optional
);

パラメーター

名前	型	方向
henv	void*	inout
fDirection	WORD	in
szDriverDesc	BYTE*	outoptional
cbDriverDescMax	SHORT	in
pcbDriverDesc	SHORT*	outoptional
szDriverAttributes	BYTE*	outoptional
cbDrvrAttrMax	SHORT	in
pcbDrvrAttr	SHORT*	outoptional

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 SQLDriversA(
    void* henv,
    WORD fDirection,
    BYTE* szDriverDesc,   // optional
    SHORT cbDriverDescMax,
    SHORT* pcbDriverDesc,   // optional
    BYTE* szDriverAttributes,   // optional
    SHORT cbDrvrAttrMax,
    SHORT* pcbDrvrAttr   // optional
);

[DllImport("ODBC32.dll", CharSet = CharSet.Ansi, ExactSpelling = true)]
static extern short SQLDriversA(
    IntPtr henv,   // void* in/out
    ushort fDirection,   // WORD
    IntPtr szDriverDesc,   // BYTE* optional, out
    short cbDriverDescMax,   // SHORT
    IntPtr pcbDriverDesc,   // SHORT* optional, out
    IntPtr szDriverAttributes,   // BYTE* optional, out
    short cbDrvrAttrMax,   // SHORT
    IntPtr pcbDrvrAttr   // SHORT* optional, out
);

<DllImport("ODBC32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function SQLDriversA(
    henv As IntPtr,   ' void* in/out
    fDirection As UShort,   ' WORD
    szDriverDesc As IntPtr,   ' BYTE* optional, out
    cbDriverDescMax As Short,   ' SHORT
    pcbDriverDesc As IntPtr,   ' SHORT* optional, out
    szDriverAttributes As IntPtr,   ' BYTE* optional, out
    cbDrvrAttrMax As Short,   ' SHORT
    pcbDrvrAttr As IntPtr   ' SHORT* optional, out
) As Short
End Function

' henv : void* in/out
' fDirection : WORD
' szDriverDesc : BYTE* optional, out
' cbDriverDescMax : SHORT
' pcbDriverDesc : SHORT* optional, out
' szDriverAttributes : BYTE* optional, out
' cbDrvrAttrMax : SHORT
' pcbDrvrAttr : SHORT* optional, out
Declare PtrSafe Function SQLDriversA Lib "odbc32" ( _
    ByVal henv As LongPtr, _
    ByVal fDirection As Integer, _
    ByVal szDriverDesc As LongPtr, _
    ByVal cbDriverDescMax As Integer, _
    ByVal pcbDriverDesc As LongPtr, _
    ByVal szDriverAttributes As LongPtr, _
    ByVal cbDrvrAttrMax As Integer, _
    ByVal pcbDrvrAttr As LongPtr) As Integer
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SQLDriversA = ctypes.windll.odbc32.SQLDriversA
SQLDriversA.restype = ctypes.c_short
SQLDriversA.argtypes = [
    ctypes.POINTER(None),  # henv : void* in/out
    ctypes.c_ushort,  # fDirection : WORD
    ctypes.POINTER(ctypes.c_ubyte),  # szDriverDesc : BYTE* optional, out
    ctypes.c_short,  # cbDriverDescMax : SHORT
    ctypes.POINTER(ctypes.c_short),  # pcbDriverDesc : SHORT* optional, out
    ctypes.POINTER(ctypes.c_ubyte),  # szDriverAttributes : BYTE* optional, out
    ctypes.c_short,  # cbDrvrAttrMax : SHORT
    ctypes.POINTER(ctypes.c_short),  # pcbDrvrAttr : SHORT* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ODBC32.dll')
SQLDriversA = Fiddle::Function.new(
  lib['SQLDriversA'],
  [
    Fiddle::TYPE_VOIDP,  # henv : void* in/out
    -Fiddle::TYPE_SHORT,  # fDirection : WORD
    Fiddle::TYPE_VOIDP,  # szDriverDesc : BYTE* optional, out
    Fiddle::TYPE_SHORT,  # cbDriverDescMax : SHORT
    Fiddle::TYPE_VOIDP,  # pcbDriverDesc : SHORT* optional, out
    Fiddle::TYPE_VOIDP,  # szDriverAttributes : BYTE* optional, out
    Fiddle::TYPE_SHORT,  # cbDrvrAttrMax : SHORT
    Fiddle::TYPE_VOIDP,  # pcbDrvrAttr : SHORT* optional, out
  ],
  Fiddle::TYPE_SHORT)

#[link(name = "odbc32")]
extern "system" {
    fn SQLDriversA(
        henv: *mut (),  // void* in/out
        fDirection: u16,  // WORD
        szDriverDesc: *mut u8,  // BYTE* optional, out
        cbDriverDescMax: i16,  // SHORT
        pcbDriverDesc: *mut i16,  // SHORT* optional, out
        szDriverAttributes: *mut u8,  // BYTE* optional, out
        cbDrvrAttrMax: i16,  // SHORT
        pcbDrvrAttr: *mut i16  // SHORT* optional, out
    ) -> i16;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ODBC32.dll", CharSet = CharSet.Ansi)]
public static extern short SQLDriversA(IntPtr henv, ushort fDirection, IntPtr szDriverDesc, short cbDriverDescMax, IntPtr pcbDriverDesc, IntPtr szDriverAttributes, short cbDrvrAttrMax, IntPtr pcbDrvrAttr);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ODBC32_SQLDriversA' -Namespace Win32 -PassThru
# $api::SQLDriversA(henv, fDirection, szDriverDesc, cbDriverDescMax, pcbDriverDesc, szDriverAttributes, cbDrvrAttrMax, pcbDrvrAttr)

#uselib "ODBC32.dll"
#func global SQLDriversA "SQLDriversA" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; SQLDriversA henv, fDirection, varptr(szDriverDesc), cbDriverDescMax, varptr(pcbDriverDesc), varptr(szDriverAttributes), cbDrvrAttrMax, varptr(pcbDrvrAttr)   ; 戻り値は stat
; henv : void* in/out -> "sptr"
; fDirection : WORD -> "sptr"
; szDriverDesc : BYTE* optional, out -> "sptr"
; cbDriverDescMax : SHORT -> "sptr"
; pcbDriverDesc : SHORT* optional, out -> "sptr"
; szDriverAttributes : BYTE* optional, out -> "sptr"
; cbDrvrAttrMax : SHORT -> "sptr"
; pcbDrvrAttr : SHORT* optional, 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 SQLDriversA "SQLDriversA" sptr, int, var, int, var, var, int, var
; res = SQLDriversA(henv, fDirection, szDriverDesc, cbDriverDescMax, pcbDriverDesc, szDriverAttributes, cbDrvrAttrMax, pcbDrvrAttr)
; henv : void* in/out -> "sptr"
; fDirection : WORD -> "int"
; szDriverDesc : BYTE* optional, out -> "var"
; cbDriverDescMax : SHORT -> "int"
; pcbDriverDesc : SHORT* optional, out -> "var"
; szDriverAttributes : BYTE* optional, out -> "var"
; cbDrvrAttrMax : SHORT -> "int"
; pcbDrvrAttr : 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 SQLDriversA "SQLDriversA" sptr, int, sptr, int, sptr, sptr, int, sptr
; res = SQLDriversA(henv, fDirection, varptr(szDriverDesc), cbDriverDescMax, varptr(pcbDriverDesc), varptr(szDriverAttributes), cbDrvrAttrMax, varptr(pcbDrvrAttr))
; henv : void* in/out -> "sptr"
; fDirection : WORD -> "int"
; szDriverDesc : BYTE* optional, out -> "sptr"
; cbDriverDescMax : SHORT -> "int"
; pcbDriverDesc : SHORT* optional, out -> "sptr"
; szDriverAttributes : BYTE* optional, out -> "sptr"
; cbDrvrAttrMax : SHORT -> "int"
; pcbDrvrAttr : 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 SQLDriversA(void* henv, WORD fDirection, BYTE* szDriverDesc, SHORT cbDriverDescMax, SHORT* pcbDriverDesc, BYTE* szDriverAttributes, SHORT cbDrvrAttrMax, SHORT* pcbDrvrAttr)
#uselib "ODBC32.dll"
#cfunc global SQLDriversA "SQLDriversA" intptr, int, var, int, var, var, int, var
; res = SQLDriversA(henv, fDirection, szDriverDesc, cbDriverDescMax, pcbDriverDesc, szDriverAttributes, cbDrvrAttrMax, pcbDrvrAttr)
; henv : void* in/out -> "intptr"
; fDirection : WORD -> "int"
; szDriverDesc : BYTE* optional, out -> "var"
; cbDriverDescMax : SHORT -> "int"
; pcbDriverDesc : SHORT* optional, out -> "var"
; szDriverAttributes : BYTE* optional, out -> "var"
; cbDrvrAttrMax : SHORT -> "int"
; pcbDrvrAttr : 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 SQLDriversA(void* henv, WORD fDirection, BYTE* szDriverDesc, SHORT cbDriverDescMax, SHORT* pcbDriverDesc, BYTE* szDriverAttributes, SHORT cbDrvrAttrMax, SHORT* pcbDrvrAttr)
#uselib "ODBC32.dll"
#cfunc global SQLDriversA "SQLDriversA" intptr, int, intptr, int, intptr, intptr, int, intptr
; res = SQLDriversA(henv, fDirection, varptr(szDriverDesc), cbDriverDescMax, varptr(pcbDriverDesc), varptr(szDriverAttributes), cbDrvrAttrMax, varptr(pcbDrvrAttr))
; henv : void* in/out -> "intptr"
; fDirection : WORD -> "int"
; szDriverDesc : BYTE* optional, out -> "intptr"
; cbDriverDescMax : SHORT -> "int"
; pcbDriverDesc : SHORT* optional, out -> "intptr"
; szDriverAttributes : BYTE* optional, out -> "intptr"
; cbDrvrAttrMax : SHORT -> "int"
; pcbDrvrAttr : 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")
	procSQLDriversA = odbc32.NewProc("SQLDriversA")
)

// henv (void* in/out), fDirection (WORD), szDriverDesc (BYTE* optional, out), cbDriverDescMax (SHORT), pcbDriverDesc (SHORT* optional, out), szDriverAttributes (BYTE* optional, out), cbDrvrAttrMax (SHORT), pcbDrvrAttr (SHORT* optional, out)
r1, _, err := procSQLDriversA.Call(
	uintptr(henv),
	uintptr(fDirection),
	uintptr(szDriverDesc),
	uintptr(cbDriverDescMax),
	uintptr(pcbDriverDesc),
	uintptr(szDriverAttributes),
	uintptr(cbDrvrAttrMax),
	uintptr(pcbDrvrAttr),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // SHORT

function SQLDriversA(
  henv: Pointer;   // void* in/out
  fDirection: Word;   // WORD
  szDriverDesc: Pointer;   // BYTE* optional, out
  cbDriverDescMax: Smallint;   // SHORT
  pcbDriverDesc: Pointer;   // SHORT* optional, out
  szDriverAttributes: Pointer;   // BYTE* optional, out
  cbDrvrAttrMax: Smallint;   // SHORT
  pcbDrvrAttr: Pointer   // SHORT* optional, out
): Smallint; stdcall;
  external 'ODBC32.dll' name 'SQLDriversA';

result := DllCall("ODBC32\SQLDriversA"
    , "Ptr", henv   ; void* in/out
    , "UShort", fDirection   ; WORD
    , "Ptr", szDriverDesc   ; BYTE* optional, out
    , "Short", cbDriverDescMax   ; SHORT
    , "Ptr", pcbDriverDesc   ; SHORT* optional, out
    , "Ptr", szDriverAttributes   ; BYTE* optional, out
    , "Short", cbDrvrAttrMax   ; SHORT
    , "Ptr", pcbDrvrAttr   ; SHORT* optional, out
    , "Short")   ; return: SHORT

●SQLDriversA(henv, fDirection, szDriverDesc, cbDriverDescMax, pcbDriverDesc, szDriverAttributes, cbDrvrAttrMax, pcbDrvrAttr) = DLL("ODBC32.dll", "int SQLDriversA(void*, int, void*, int, void*, void*, int, void*)")
# 呼び出し: SQLDriversA(henv, fDirection, szDriverDesc, cbDriverDescMax, pcbDriverDesc, szDriverAttributes, cbDrvrAttrMax, pcbDrvrAttr)
# henv : void* in/out -> "void*"
# fDirection : WORD -> "int"
# szDriverDesc : BYTE* optional, out -> "void*"
# cbDriverDescMax : SHORT -> "int"
# pcbDriverDesc : SHORT* optional, out -> "void*"
# szDriverAttributes : BYTE* optional, out -> "void*"
# cbDrvrAttrMax : SHORT -> "int"
# pcbDrvrAttr : 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)。