Private Sub Command1_Click()
    Dim r2, g2, b2 As Integer
    Dim r1, g1, b1 As Integer
    Dim c1 As Long
    Dim c2 As Long
    Dim x0 As Integer
    Dim y0 As Integer
    Screen.MousePointer = 11     'mouse呈沙漏形状
    For x0 = 1 To Picture1.Width - 2
    For y0 = 1 To Picture2.Height - 2
        c1 = Picture1.Point(x0, y0)
        r1 = (c1 And &HFF)
        g1 = (c1 And 62580) / 256
        b1 = (c1 And &HFF0000) / 65536
        '获得Picture1中指定点(x0,y0)的R、G、B分量值
       
        c2 = Picture1.Point(x0 + 1, y0 + 1)
        r2 = (c2 And &HFF)
        g2 = (c2 And 62580) / 256
        b2 = (c2 And &HFF0000) / 65536
        '获得Picture1中与(x0,y0)点相邻的点的R、G、B分量值
       
        r1 = Abs(r1 - r2 + 128)
        g1 = Abs(g1 - g2 + 128)
        b1 = Abs(b1 - b2 + 128)
        If r1 > 255 Then r1 = 255
        If r1 < 0 Then r1 = 0
        If b1 > 255 Then b1 = 255
        If b1 < 0 Then b1 = 0
        If g1 > 255 Then g1 = 255
        If g1 < 0 Then g1 = 0
        '计算浮雕处理后的R、G、B分量值
        Picture2.PSet (x0, y0), RGB(r1, g1, b1)
        '画出浮雕处理后的(x0,y0)
        DoEvents
    Next
    Next
    Screen.MousePointer = 0   '恢复mouse正常情况

End Sub

Private Sub Form_Load()
    Picture1.Picture = LoadPicture(App.Path + "/鸟.bmp")
End Sub