ホーム › System.Diagnostics.Debug › SymGetSymPrev

SymGetSymPrev

関数

現在のシンボルから前のシンボルを取得する(旧式API)。

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 SymGetSymPrev(
    HANDLE hProcess,
    IMAGEHLP_SYMBOL* Symbol
);

パラメーター

名前	型	方向
hProcess	HANDLE	in
Symbol	IMAGEHLP_SYMBOL*	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 SymGetSymPrev(
    HANDLE hProcess,
    IMAGEHLP_SYMBOL* Symbol
);

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

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

' hProcess : HANDLE
' Symbol : IMAGEHLP_SYMBOL* in/out
Declare PtrSafe Function SymGetSymPrev Lib "dbghelp" ( _
    ByVal hProcess As LongPtr, _
    ByVal Symbol 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

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

require 'fiddle'
require 'fiddle/import'

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

#[link(name = "dbghelp")]
extern "system" {
    fn SymGetSymPrev(
        hProcess: *mut core::ffi::c_void,  // HANDLE
        Symbol: *mut IMAGEHLP_SYMBOL  // IMAGEHLP_SYMBOL* 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 SymGetSymPrev(IntPtr hProcess, IntPtr Symbol);
"@
$api = Add-Type -MemberDefinition $sig -Name 'dbghelp_SymGetSymPrev' -Namespace Win32 -PassThru
# $api::SymGetSymPrev(hProcess, Symbol)

#uselib "dbghelp.dll"
#func global SymGetSymPrev "SymGetSymPrev" sptr, sptr
; SymGetSymPrev hProcess, varptr(Symbol)   ; 戻り値は stat
; hProcess : HANDLE -> "sptr"
; Symbol : IMAGEHLP_SYMBOL* 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 SymGetSymPrev "SymGetSymPrev" sptr, var
; res = SymGetSymPrev(hProcess, Symbol)
; hProcess : HANDLE -> "sptr"
; Symbol : IMAGEHLP_SYMBOL* 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 SymGetSymPrev "SymGetSymPrev" sptr, sptr
; res = SymGetSymPrev(hProcess, varptr(Symbol))
; hProcess : HANDLE -> "sptr"
; Symbol : IMAGEHLP_SYMBOL* 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 SymGetSymPrev(HANDLE hProcess, IMAGEHLP_SYMBOL* Symbol)
#uselib "dbghelp.dll"
#cfunc global SymGetSymPrev "SymGetSymPrev" intptr, var
; res = SymGetSymPrev(hProcess, Symbol)
; hProcess : HANDLE -> "intptr"
; Symbol : IMAGEHLP_SYMBOL* 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 SymGetSymPrev(HANDLE hProcess, IMAGEHLP_SYMBOL* Symbol)
#uselib "dbghelp.dll"
#cfunc global SymGetSymPrev "SymGetSymPrev" intptr, intptr
; res = SymGetSymPrev(hProcess, varptr(Symbol))
; hProcess : HANDLE -> "intptr"
; Symbol : IMAGEHLP_SYMBOL* 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")
	procSymGetSymPrev = dbghelp.NewProc("SymGetSymPrev")
)

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

function SymGetSymPrev(
  hProcess: THandle;   // HANDLE
  Symbol: Pointer   // IMAGEHLP_SYMBOL* in/out
): BOOL; stdcall;
  external 'dbghelp.dll' name 'SymGetSymPrev';

result := DllCall("dbghelp\SymGetSymPrev"
    , "Ptr", hProcess   ; HANDLE
    , "Ptr", Symbol   ; IMAGEHLP_SYMBOL* in/out
    , "Int")   ; return: BOOL

●SymGetSymPrev(hProcess, Symbol) = DLL("dbghelp.dll", "bool SymGetSymPrev(void*, void*)")
# 呼び出し: SymGetSymPrev(hProcess, Symbol)
# hProcess : HANDLE -> "void*"
# Symbol : IMAGEHLP_SYMBOL* 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)。