Excel批量自动插入图片（同一行）

Sub 单元格自动插入图片()
    '选定起始单元格后，按一定行数(1-n)自动往返插入各种格式的图片，
    '并在单元格中写入插入图片的名称。

    Pf = "ai,"
    Pf = Pf & "bmp,bmz"
    Pf = Pf & "cdr,cgm,"
    Pf = Pf & "dib,dwg,dxf,"
    Pf = Pf & "emf,emz,eps,exf,exif,"
    Pf = Pf & "fpx,"
    Pf = Pf & "gfa,gif,"
    Pf = Pf & "hdr,"
    Pf = Pf & "ico,"
    Pf = Pf & "jfif,jpe,jpeg,jpg,"
    Pf = Pf & "pcd,pct,pcx,pcz,pict,png,psd,"
    Pf = Pf & "raw,rle,"
    Pf = Pf & "svg,"
    Pf = Pf & "tga,tif,tiff,"
    Pf = Pf & "ufo,"
    Pf = Pf & "wdp,wmf,wmz,"
    
    K = InputBox("插入行数，1=按列挿入", "插入行数", 1)
    If K = "" Then Exit Sub
    Dim Rng  As Range: Set Rng = ActiveCell
    
    OpenFile = Application.GetOpenFilename("Picture Files(*.*),*.*", , "打开目标文件夹后选择任一图片即可指定文件夹。或按取消则会将当前文件所在文件夹认作指定文件夹。")
    If OpenFile = False Then
        myDir = ThisWorkbook.Path & "\"
    Else
        myDir = Left(OpenFile, InStrRev(OpenFile, "\"))
    End If
    Filename = Dir(myDir)
    
    Application.ScreenUpdating = False
   
    Do While Filename <> ""
        If InStr(Pf, LCase(Right(Filename, Len(Filename) - InStrRev(Filename, ".")))) > 0 Then
            Rng.Cells(1 + n \ K, n Mod K + 1).Select
            ActiveCell = Left(Filename, InStrRev(Filename, ".") - 1)
            
            ActiveSheet.Pictures.Insert(myDir & Filename).Select
            With Selection
                .Placement = xlMoveAndSize
                .ShapeRange.LockAspectRatio = msoFalse
                .Top = ActiveCell.Top
                .Left = ActiveCell.Left
                .Height = ActiveCell.Height
                .Width = ActiveCell.Width
            End With
            n = n + 1
        End If
        Filename = Dir
    Loop
    
    Application.ScreenUpdating = True
    Rng.Select
End Sub