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TrackMouseEvent

関数

マウスのホバーやウィンドウ離脱イベントを追跡する。

DLLUSER32.dll呼出規約winapiSetLastErrorあり対応OSWindows 2000 以降

シグネチャ

// USER32.dll
#include <windows.h>

BOOL TrackMouseEvent(
    TRACKMOUSEEVENT* lpEventTrack
);

パラメーター

名前	型	方向
lpEventTrack	TRACKMOUSEEVENT*	inout

戻り値の型: BOOL

各言語での呼び出し定義

// USER32.dll
#include <windows.h>

BOOL TrackMouseEvent(
    TRACKMOUSEEVENT* lpEventTrack
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("USER32.dll", SetLastError = true, ExactSpelling = true)]
static extern bool TrackMouseEvent(
    IntPtr lpEventTrack   // TRACKMOUSEEVENT* in/out
);

<DllImport("USER32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function TrackMouseEvent(
    lpEventTrack As IntPtr   ' TRACKMOUSEEVENT* in/out
) As Boolean
End Function

' lpEventTrack : TRACKMOUSEEVENT* in/out
Declare PtrSafe Function TrackMouseEvent Lib "user32" ( _
    ByVal lpEventTrack 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

TrackMouseEvent = ctypes.windll.user32.TrackMouseEvent
TrackMouseEvent.restype = wintypes.BOOL
TrackMouseEvent.argtypes = [
    ctypes.c_void_p,  # lpEventTrack : TRACKMOUSEEVENT* in/out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('USER32.dll')
TrackMouseEvent = Fiddle::Function.new(
  lib['TrackMouseEvent'],
  [
    Fiddle::TYPE_VOIDP,  # lpEventTrack : TRACKMOUSEEVENT* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "user32")]
extern "system" {
    fn TrackMouseEvent(
        lpEventTrack: *mut TRACKMOUSEEVENT  // TRACKMOUSEEVENT* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("USER32.dll", SetLastError = true)]
public static extern bool TrackMouseEvent(IntPtr lpEventTrack);
"@
$api = Add-Type -MemberDefinition $sig -Name 'USER32_TrackMouseEvent' -Namespace Win32 -PassThru
# $api::TrackMouseEvent(lpEventTrack)

#uselib "USER32.dll"
#func global TrackMouseEvent "TrackMouseEvent" sptr
; TrackMouseEvent varptr(lpEventTrack)   ; 戻り値は stat
; lpEventTrack : TRACKMOUSEEVENT* 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 "USER32.dll"
#cfunc global TrackMouseEvent "TrackMouseEvent" var
; res = TrackMouseEvent(lpEventTrack)
; lpEventTrack : TRACKMOUSEEVENT* 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 "USER32.dll"
#cfunc global TrackMouseEvent "TrackMouseEvent" sptr
; res = TrackMouseEvent(varptr(lpEventTrack))
; lpEventTrack : TRACKMOUSEEVENT* 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 TrackMouseEvent(TRACKMOUSEEVENT* lpEventTrack)
#uselib "USER32.dll"
#cfunc global TrackMouseEvent "TrackMouseEvent" var
; res = TrackMouseEvent(lpEventTrack)
; lpEventTrack : TRACKMOUSEEVENT* 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 TrackMouseEvent(TRACKMOUSEEVENT* lpEventTrack)
#uselib "USER32.dll"
#cfunc global TrackMouseEvent "TrackMouseEvent" intptr
; res = TrackMouseEvent(varptr(lpEventTrack))
; lpEventTrack : TRACKMOUSEEVENT* 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 (
	user32 = windows.NewLazySystemDLL("USER32.dll")
	procTrackMouseEvent = user32.NewProc("TrackMouseEvent")
)

// lpEventTrack (TRACKMOUSEEVENT* in/out)
r1, _, err := procTrackMouseEvent.Call(
	uintptr(lpEventTrack),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function TrackMouseEvent(
  lpEventTrack: Pointer   // TRACKMOUSEEVENT* in/out
): BOOL; stdcall;
  external 'USER32.dll' name 'TrackMouseEvent';

result := DllCall("USER32\TrackMouseEvent"
    , "Ptr", lpEventTrack   ; TRACKMOUSEEVENT* in/out
    , "Int")   ; return: BOOL

●TrackMouseEvent(lpEventTrack) = DLL("USER32.dll", "bool TrackMouseEvent(void*)")
# 呼び出し: TrackMouseEvent(lpEventTrack)
# lpEventTrack : TRACKMOUSEEVENT* 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)。