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mciGetYieldProc

関数

MCIデバイスに設定されたイールドプロシージャを取得する。

DLLWINMM.dll呼出規約winapi

シグネチャ

// WINMM.dll
#include <windows.h>

YIELDPROC mciGetYieldProc(
    DWORD mciId,
    DWORD* pdwYieldData
);

パラメーター

名前	型	方向
mciId	DWORD	in
pdwYieldData	DWORD*	in

戻り値の型: YIELDPROC

各言語での呼び出し定義

// WINMM.dll
#include <windows.h>

YIELDPROC mciGetYieldProc(
    DWORD mciId,
    DWORD* pdwYieldData
);

[DllImport("WINMM.dll", ExactSpelling = true)]
static extern IntPtr mciGetYieldProc(
    uint mciId,   // DWORD
    ref uint pdwYieldData   // DWORD*
);

<DllImport("WINMM.dll", ExactSpelling:=True)>
Public Shared Function mciGetYieldProc(
    mciId As UInteger,   ' DWORD
    ByRef pdwYieldData As UInteger   ' DWORD*
) As IntPtr
End Function

' mciId : DWORD
' pdwYieldData : DWORD*
Declare PtrSafe Function mciGetYieldProc Lib "winmm" ( _
    ByVal mciId As Long, _
    ByRef pdwYieldData As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

mciGetYieldProc = ctypes.windll.winmm.mciGetYieldProc
mciGetYieldProc.restype = ctypes.c_void_p
mciGetYieldProc.argtypes = [
    wintypes.DWORD,  # mciId : DWORD
    ctypes.POINTER(wintypes.DWORD),  # pdwYieldData : DWORD*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINMM.dll')
mciGetYieldProc = Fiddle::Function.new(
  lib['mciGetYieldProc'],
  [
    -Fiddle::TYPE_INT,  # mciId : DWORD
    Fiddle::TYPE_VOIDP,  # pdwYieldData : DWORD*
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "winmm")]
extern "system" {
    fn mciGetYieldProc(
        mciId: u32,  // DWORD
        pdwYieldData: *mut u32  // DWORD*
    ) -> *const core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WINMM.dll")]
public static extern IntPtr mciGetYieldProc(uint mciId, ref uint pdwYieldData);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WINMM_mciGetYieldProc' -Namespace Win32 -PassThru
# $api::mciGetYieldProc(mciId, pdwYieldData)

#uselib "WINMM.dll"
#func global mciGetYieldProc "mciGetYieldProc" sptr, sptr
; mciGetYieldProc mciId, varptr(pdwYieldData)   ; 戻り値は stat
; mciId : DWORD -> "sptr"
; pdwYieldData : DWORD* -> "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 "WINMM.dll"
#cfunc global mciGetYieldProc "mciGetYieldProc" int, var
; res = mciGetYieldProc(mciId, pdwYieldData)
; mciId : DWORD -> "int"
; pdwYieldData : DWORD* -> "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 "WINMM.dll"
#cfunc global mciGetYieldProc "mciGetYieldProc" int, sptr
; res = mciGetYieldProc(mciId, varptr(pdwYieldData))
; mciId : DWORD -> "int"
; pdwYieldData : DWORD* -> "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:

; YIELDPROC mciGetYieldProc(DWORD mciId, DWORD* pdwYieldData)
#uselib "WINMM.dll"
#cfunc global mciGetYieldProc "mciGetYieldProc" int, var
; res = mciGetYieldProc(mciId, pdwYieldData)
; mciId : DWORD -> "int"
; pdwYieldData : DWORD* -> "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。; YIELDPROC mciGetYieldProc(DWORD mciId, DWORD* pdwYieldData)
#uselib "WINMM.dll"
#cfunc global mciGetYieldProc "mciGetYieldProc" int, intptr
; res = mciGetYieldProc(mciId, varptr(pdwYieldData))
; mciId : DWORD -> "int"
; pdwYieldData : DWORD* -> "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 (
	winmm = windows.NewLazySystemDLL("WINMM.dll")
	procmciGetYieldProc = winmm.NewProc("mciGetYieldProc")
)

// mciId (DWORD), pdwYieldData (DWORD*)
r1, _, err := procmciGetYieldProc.Call(
	uintptr(mciId),
	uintptr(pdwYieldData),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // YIELDPROC

function mciGetYieldProc(
  mciId: DWORD;   // DWORD
  pdwYieldData: Pointer   // DWORD*
): Pointer; stdcall;
  external 'WINMM.dll' name 'mciGetYieldProc';

result := DllCall("WINMM\mciGetYieldProc"
    , "UInt", mciId   ; DWORD
    , "Ptr", pdwYieldData   ; DWORD*
    , "Ptr")   ; return: YIELDPROC

●mciGetYieldProc(mciId, pdwYieldData) = DLL("WINMM.dll", "void* mciGetYieldProc(dword, void*)")
# 呼び出し: mciGetYieldProc(mciId, pdwYieldData)
# mciId : DWORD -> "dword"
# pdwYieldData : DWORD* -> "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)。