What am I doing Wrong?

[LBS]

I am trying to use the StrechBlt Function, but nothing happens.

Option Explicit
Private Declare Function StretchBlt Lib "gdi32" (ByVal hdc As Long, ByVal x As Long, ByVal y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hSrcDC As Long, ByVal xSrc As Long, ByVal ySrc As Long, ByVal nSrcWidth As Long, ByVal nSrcHeight As Long, ByVal dwRop As Long) As Long

Private Declare Function BitBlt Lib "gdi32" (ByVal hDestDC As Long, ByVal x As Long, ByVal y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hSrcDC As Long, ByVal xSrc As Long, ByVal ySrc As Long, ByVal dwRop As Long) As Long

Private Sub Form_Load()
    picPreviewFront.Picture = frmMain.imgFront.Picture
    StretchBlt picPreviewFront.hdc, 12288, 7380, ScaleWidth, ScaleHeight, frmPreviewFront.hdc, 12288, 7380, picPreviewFront.ScaleWidth, picPreviewFront.ScaleHeight, vbSrcCopy
   End Sub

Private Sub mnuFileRefresh_Click()
    Refresh
End Sub