Visual Basic Codes

Visual Basic > Forms sample source codes

Dither a Visual Basic Form

Dither a Visual Basic Form

To dither a Visual Basic form, place the following code in the form.

'Purpose     :  Dither a form to blue
'Inputs      :  fmForm                  The form to dither
'Outputs     :  N/A
'Notes       :  Adjust the RGB line to change the dithering eg. Use RGB(255 - iLoop, 0, 0) for Red


Private Sub FormDither(fmForm As Form)
    Dim iLoop As Integer, iScaleHeight As Integer, iScreenWidth As Integer
    
    On Error Resume Next
    iScaleHeight = Me.ScaleHeight
    iScreenWidth = Screen.Width
    fmForm.DrawStyle = vbInsideSolid
    fmForm.DrawMode = vbCopyPen
    fmForm.ScaleMode = vbPixels
    fmForm.DrawWidth = 2
    For iLoop = 0 To iScaleHeight
        fmForm.Line (0, iLoop)-(iScreenWidth, iLoop - 1), RGB(0, 0, 255 - (255 / iScaleHeight) * iLoop), B
    Next iLoop
    On Error GoTo 0
    
End Sub

Private Sub Form_Paint()
    FormDither Me
End Sub

Private Sub Form_Resize()
    FormDither Me
End Sub

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