GetThemeTextMetrics

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

HRESULT GetThemeTextMetrics(
    HTHEME hTheme,
    HDC hdc,
    INT iPartId,
    INT iStateId,
    TEXTMETRICW* ptm
);

<DllImport("UxTheme.dll", ExactSpelling:=True)>
Public Shared Function GetThemeTextMetrics(
    hTheme As IntPtr,   ' HTHEME
    hdc As IntPtr,   ' HDC
    iPartId As Integer,   ' INT
    iStateId As Integer,   ' INT
    ptm As IntPtr   ' TEXTMETRICW* out
) As Integer
End Function

' hTheme : HTHEME
' hdc : HDC
' iPartId : INT
' iStateId : INT
' ptm : TEXTMETRICW* out
Declare PtrSafe Function GetThemeTextMetrics Lib "uxtheme" ( _
    ByVal hTheme As LongPtr, _
    ByVal hdc As LongPtr, _
    ByVal iPartId As Long, _
    ByVal iStateId As Long, _
    ByVal ptm 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

GetThemeTextMetrics = ctypes.windll.uxtheme.GetThemeTextMetrics
GetThemeTextMetrics.restype = ctypes.c_int
GetThemeTextMetrics.argtypes = [
    ctypes.c_ssize_t,  # hTheme : HTHEME
    wintypes.HANDLE,  # hdc : HDC
    ctypes.c_int,  # iPartId : INT
    ctypes.c_int,  # iStateId : INT
    ctypes.c_void_p,  # ptm : TEXTMETRICW* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('UxTheme.dll')
GetThemeTextMetrics = Fiddle::Function.new(
  lib['GetThemeTextMetrics'],
  [
    Fiddle::TYPE_INTPTR_T,  # hTheme : HTHEME
    Fiddle::TYPE_VOIDP,  # hdc : HDC
    Fiddle::TYPE_INT,  # iPartId : INT
    Fiddle::TYPE_INT,  # iStateId : INT
    Fiddle::TYPE_VOIDP,  # ptm : TEXTMETRICW* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "uxtheme")]
extern "system" {
    fn GetThemeTextMetrics(
        hTheme: isize,  // HTHEME
        hdc: *mut core::ffi::c_void,  // HDC
        iPartId: i32,  // INT
        iStateId: i32,  // INT
        ptm: *mut TEXTMETRICW  // TEXTMETRICW* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("UxTheme.dll")]
public static extern int GetThemeTextMetrics(IntPtr hTheme, IntPtr hdc, int iPartId, int iStateId, IntPtr ptm);
"@
$api = Add-Type -MemberDefinition $sig -Name 'UxTheme_GetThemeTextMetrics' -Namespace Win32 -PassThru
# $api::GetThemeTextMetrics(hTheme, hdc, iPartId, iStateId, ptm)

#uselib "UxTheme.dll"
#func global GetThemeTextMetrics "GetThemeTextMetrics" sptr, sptr, sptr, sptr, sptr
; GetThemeTextMetrics hTheme, hdc, iPartId, iStateId, varptr(ptm)   ; 戻り値は stat
; hTheme : HTHEME -> "sptr"
; hdc : HDC -> "sptr"
; iPartId : INT -> "sptr"
; iStateId : INT -> "sptr"
; ptm : TEXTMETRICW* 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。

#uselib "UxTheme.dll"
#cfunc global GetThemeTextMetrics "GetThemeTextMetrics" sptr, sptr, int, int, var
; res = GetThemeTextMetrics(hTheme, hdc, iPartId, iStateId, ptm)
; hTheme : HTHEME -> "sptr"
; hdc : HDC -> "sptr"
; iPartId : INT -> "int"
; iStateId : INT -> "int"
; ptm : TEXTMETRICW* 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。

; HRESULT GetThemeTextMetrics(HTHEME hTheme, HDC hdc, INT iPartId, INT iStateId, TEXTMETRICW* ptm)
#uselib "UxTheme.dll"
#cfunc global GetThemeTextMetrics "GetThemeTextMetrics" intptr, intptr, int, int, var
; res = GetThemeTextMetrics(hTheme, hdc, iPartId, iStateId, ptm)
; hTheme : HTHEME -> "intptr"
; hdc : HDC -> "intptr"
; iPartId : INT -> "int"
; iStateId : INT -> "int"
; ptm : TEXTMETRICW* 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。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	uxtheme = windows.NewLazySystemDLL("UxTheme.dll")
	procGetThemeTextMetrics = uxtheme.NewProc("GetThemeTextMetrics")
)

// hTheme (HTHEME), hdc (HDC), iPartId (INT), iStateId (INT), ptm (TEXTMETRICW* out)
r1, _, err := procGetThemeTextMetrics.Call(
	uintptr(hTheme),
	uintptr(hdc),
	uintptr(iPartId),
	uintptr(iStateId),
	uintptr(ptm),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function GetThemeTextMetrics(
  hTheme: NativeInt;   // HTHEME
  hdc: THandle;   // HDC
  iPartId: Integer;   // INT
  iStateId: Integer;   // INT
  ptm: Pointer   // TEXTMETRICW* out
): Integer; stdcall;
  external 'UxTheme.dll' name 'GetThemeTextMetrics';

result := DllCall("UxTheme\GetThemeTextMetrics"
    , "Ptr", hTheme   ; HTHEME
    , "Ptr", hdc   ; HDC
    , "Int", iPartId   ; INT
    , "Int", iStateId   ; INT
    , "Ptr", ptm   ; TEXTMETRICW* out
    , "Int")   ; return: HRESULT

●GetThemeTextMetrics(hTheme, hdc, iPartId, iStateId, ptm) = DLL("UxTheme.dll", "int GetThemeTextMetrics(int, void*, int, int, void*)")
# 呼び出し: GetThemeTextMetrics(hTheme, hdc, iPartId, iStateId, ptm)
# hTheme : HTHEME -> "int"
# hdc : HDC -> "void*"
# iPartId : INT -> "int"
# iStateId : INT -> "int"
# ptm : TEXTMETRICW* 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)。