//go:build windows

package win32

import (
	"unsafe"
)

var (
	procGetWindowRect = user32.NewProc("GetWindowRect")
)

type rect struct {
	Left, Top, Right, Bottom int32
}

// GetWindowSize returns the width and height of the given window in pixels.
func GetWindowSize(hwnd uintptr) (width, height int, ok bool) {
	var r rect
	ret, _, _ := procGetWindowRect.Call(hwnd, uintptr(unsafe.Pointer(&r)))
	if ret == 0 {
		return 0, 0, false
	}
	return int(r.Right - r.Left), int(r.Bottom - r.Top), true
}