Need help with PictureBox

I want to add a picture together at runtime.
Pic1
Pic2
Pic3

Bottom half of Pic1 + Pic2 + Top half of Pic 3
so it would be

buttomhalf(Pic1)
Pic2
tophalf(pic3)

How can I do this

I haven't tested this, or even checked over it properly :p but something like this would add the pictures to a picture box name Picture4. It could be more effecient though:

VB Code:

Option Explicit
 
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 MergePics()
    Picture4.Cls
    Call BitBlt(Picture4.hDC, 0, 0, _
        Picture1.ScaleWidth / Screen.TwipsPerPixelX, _
        (Picture1.ScaleHeight / Screen.TwipsPerPixelY) / 2, _
        Picture1.hDC, Picture1.ScaleWidth / Screen.TwipsPerPixelX, _
        Picture1.ScaleHeight / Screen.TwipsPerPixelY, vbSrcCopy)
    Call BitBlt(Picture4.hDC, 0, Picture1.ScaleHeight / Screen.TwipsPerPixelY, _
        Picture2.ScaleWidth, Picture2.ScaleHeight / Screen.TwipsPerPixelY, _
        Picture2.hDC, 0, 0, vbSrcCopy)
    Call BitBlt(Picture4.hDC, 0, _
        (Picture2.ScaleHeight / Screen.TwipsPerPixelY) + _
        ((Picture1.ScaleHeight / Screen.TwipsPerPixelY) / 2), _
        Picture3.ScaleWidth / Screen.TwipsPerPixelX, _
        (Picture3.ScaleHeight / Screen.TwipsPerPixelY) / 2, _
        Picture3.hDC, 0, 0, vbSrcCopy)
    If Picture4.AutoRedraw Then Picture4.Refresh
End Sub