/// <summary>
/// Bitmapｲﾒｰｼﾞを作成します。
/// </summary>
/// <param name="width">作成するBitmapの幅</param>
/// <param name="height">作成するBitmapの高さ</param>
/// <returns></returns>
internal static WriteableBitmap CreateWriteableBitmap(int width, int height)
{
var dpi = WpfUtil.GetDpi(Orientation.Horizontal);
return(new WriteableBitmap(width, height, dpi, dpi, PixelFormats.Pbgra32, null));
}