'Description: Tiles a Bitmap in a PictureBox

'Private Declare Function BitBlt Lib "GDI32" (ByVal hDestDC As Integer, ByVal X As Integer, ByVal Y As Integer, ByVal nWid As Integer, ByVal nHt As Integer, ByVal hSrcDC As Integer, ByVal XSrc As Integer, ByVal YSrc As Integer, ByVal dwRop As Long) As Integer

'Private Sub Tile(picParent As PictureBox, picTile As PictureBox)
'This subroutine tiles a picture onto another picture.
'call syntax: Tile Picture1, Picture2
'             Tile (destination), (source)
Dim TileIt As Integer
Const SRCCOPY = &HCC0020
Dim X As Integer, Y As Integer
Dim MaximumX As Integer, MaximumY As Integer
MaximumX = picParent.Width + picTile.Width
MaximumY = picParent.Height + picTile.Height
MaximumX = MaximumX \ Screen.TwipsPerPixelX
MaximumY = MaximumY \ Screen.TwipsPerPixelY
Dim TileWidth As Integer, TileHeight As Integer
TileWidth = picTile.Width \ Screen.TwipsPerPixelX
TileHeight = picTile.Height \ Screen.TwipsPerPixelY
For Y = 0 To MaximumY Step TileHeight
  For X = 0 To MaximumX Step TileWidth
    TileIt = BitBlt(picParent.hDC, X, Y, TileWidth, TileHeight, picTile.hDC, 0, 0, SRCCOPY)
  Next
Next
'End Sub