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SymNext

関数

現在のシンボルから次のシンボル情報を取得する。

DLLdbghelp.dll文字セットANSI (-A)呼出規約winapiSetLastErrorあり

シグネチャ

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

BOOL SymNext(
    HANDLE hProcess,
    SYMBOL_INFO* si
);

パラメーター

名前	型	方向
hProcess	HANDLE	in
si	SYMBOL_INFO*	inout

戻り値の型: BOOL

各言語での呼び出し定義

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

BOOL SymNext(
    HANDLE hProcess,
    SYMBOL_INFO* si
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("dbghelp.dll", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
static extern bool SymNext(
    IntPtr hProcess,   // HANDLE
    IntPtr si   // SYMBOL_INFO* in/out
);

<DllImport("dbghelp.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SymNext(
    hProcess As IntPtr,   ' HANDLE
    si As IntPtr   ' SYMBOL_INFO* in/out
) As Boolean
End Function

' hProcess : HANDLE
' si : SYMBOL_INFO* in/out
Declare PtrSafe Function SymNext Lib "dbghelp" ( _
    ByVal hProcess As LongPtr, _
    ByVal si As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SymNext = ctypes.windll.dbghelp.SymNext
SymNext.restype = wintypes.BOOL
SymNext.argtypes = [
    wintypes.HANDLE,  # hProcess : HANDLE
    ctypes.c_void_p,  # si : SYMBOL_INFO* in/out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('dbghelp.dll')
SymNext = Fiddle::Function.new(
  lib['SymNext'],
  [
    Fiddle::TYPE_VOIDP,  # hProcess : HANDLE
    Fiddle::TYPE_VOIDP,  # si : SYMBOL_INFO* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "dbghelp")]
extern "system" {
    fn SymNext(
        hProcess: *mut core::ffi::c_void,  // HANDLE
        si: *mut SYMBOL_INFO  // SYMBOL_INFO* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("dbghelp.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern bool SymNext(IntPtr hProcess, IntPtr si);
"@
$api = Add-Type -MemberDefinition $sig -Name 'dbghelp_SymNext' -Namespace Win32 -PassThru
# $api::SymNext(hProcess, si)

#uselib "dbghelp.dll"
#func global SymNext "SymNext" sptr, sptr
; SymNext hProcess, varptr(si)   ; 戻り値は stat
; hProcess : HANDLE -> "sptr"
; si : SYMBOL_INFO* 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 "dbghelp.dll"
#cfunc global SymNext "SymNext" sptr, var
; res = SymNext(hProcess, si)
; hProcess : HANDLE -> "sptr"
; si : SYMBOL_INFO* 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 "dbghelp.dll"
#cfunc global SymNext "SymNext" sptr, sptr
; res = SymNext(hProcess, varptr(si))
; hProcess : HANDLE -> "sptr"
; si : SYMBOL_INFO* 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:

; BOOL SymNext(HANDLE hProcess, SYMBOL_INFO* si)
#uselib "dbghelp.dll"
#cfunc global SymNext "SymNext" intptr, var
; res = SymNext(hProcess, si)
; hProcess : HANDLE -> "intptr"
; si : SYMBOL_INFO* 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。; BOOL SymNext(HANDLE hProcess, SYMBOL_INFO* si)
#uselib "dbghelp.dll"
#cfunc global SymNext "SymNext" intptr, intptr
; res = SymNext(hProcess, varptr(si))
; hProcess : HANDLE -> "intptr"
; si : SYMBOL_INFO* 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 (
	dbghelp = windows.NewLazySystemDLL("dbghelp.dll")
	procSymNext = dbghelp.NewProc("SymNext")
)

// hProcess (HANDLE), si (SYMBOL_INFO* in/out)
r1, _, err := procSymNext.Call(
	uintptr(hProcess),
	uintptr(si),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function SymNext(
  hProcess: THandle;   // HANDLE
  si: Pointer   // SYMBOL_INFO* in/out
): BOOL; stdcall;
  external 'dbghelp.dll' name 'SymNext';

result := DllCall("dbghelp\SymNext"
    , "Ptr", hProcess   ; HANDLE
    , "Ptr", si   ; SYMBOL_INFO* in/out
    , "Int")   ; return: BOOL

●SymNext(hProcess, si) = DLL("dbghelp.dll", "bool SymNext(void*, void*)")
# 呼び出し: SymNext(hProcess, si)
# hProcess : HANDLE -> "void*"
# si : SYMBOL_INFO* 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)。