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Paint Fill

Posted on 1998-08-27
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Last Modified: 2010-04-30
I would like to know how to get the screen to fill or be painted with respect to lines as boundries. Like the paint bucket in MSPaint.
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Question by:bradsoblesky
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clifABB earned 80 total points
ID: 1431529
The following subroutine will flood from the X-Y point you pass it in the color you pass it:

Private Declare Function ExtFloodFill Lib "gdi32" (ByVal hdc As Long, ByVal X As Long, ByVal Y As Long, ByVal crColor As Long, ByVal wFillType As Long) As Long

Private Sub FillArea(X As Long, Y As Long, lColor As Long)
  Dim lOldColor As Long
  Dim lFillType As Long
  Dim lRes      As Long
  Const FLOODFILLBORDER = 0  ' Fill until crColor& color encountered.
  Const FLOODFILLSURFACE = 1 ' Fill surface until crColor& color not
                             ' encountered.
  Picture1.FillColor = lColor
  lOldColor = Picture1.Point(X, Y)
  lFillType = FLOODFILLSURFACE
  lRes = ExtFloodFill(Picture1.hdc, X / Screen.TwipsPerPixelX, Y / Screen.TwipsPerPixelY, lOldColor, lFillType)
End Sub

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Author Comment

by:bradsoblesky
ID: 1431530
Where do I put each of these? So I click on the picture or form and it does it.
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LVL 6

Expert Comment

by:clifABB
ID: 1431531
I would suggest the MouseUp event of the picture control:

Private Sub Picture1_MouseUp(Button As Integer, Shift As Integer, X As Single, Y As Single)
  If Button = vbLeftButton Then
    'lColor is set elsewhere
    FillArea X, Y, lColor
  End If
End Sub

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Author Comment

by:bradsoblesky
ID: 1431532
This is not working for me it tells me that lcolor is not defined and something about the part of the sub int "()" is not valid. Help.  

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LVL 6

Expert Comment

by:clifABB
ID: 1431533
You need to define lColor either globally or at module level and assign it a value (it would default to 0 which is black)

In the FillArea procedure, add the following line just before the FillColor line:
  Picture1.FillStyle = vbFSSolid
Finally, in the MouseUp routine, make this small change to the Call to FillArea():
    FillArea CLng(X), CLng(Y), lColor

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Author Comment

by:bradsoblesky
ID: 1431534
Sorry about all the trouble. Thanks.
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LVL 6

Expert Comment

by:clifABB
ID: 1431535
No problem.  Glad I could help.  :)
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