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Private Type RECT
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
Private Declare Function DeleteObject Lib "gdi32" (ByVal hObject As Long) As Long
Private Declare Function PtInRect Lib "user32" (lpRect As RECT, ByVal x As Long, ByVal y As Long) As Long
Private Declare Function PtInRegion Lib "gdi32" (ByVal hRgn As Long, ByVal x As Long, ByVal y As Long) As Long
Private Declare Function CreateEllipticRgnIndirect Lib "gdi32" (lpRect As RECT) As Long
Private Declare Function SetPixelV Lib "gdi32" (ByVal hdc As Long, ByVal x As Long, ByVal y As Long, ByVal crColor As Long) As Long
Private Declare Function SetRect Lib "user32" (lpRect As RECT, ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long
Private Sub Form_Load()
'KPD-Team 1999
'URL: http://www.allapi.net/
'E-Mail: KPDTeam@Allapi.net
Dim mRGN As Long, R As RECT, x As Long, y As Long
'Set the graphical mode to persistent
Me.AutoRedraw = True
'Set the rectangle's values
SetRect R, 0, 0, 50, 50
'Create an elliptical region
mRGN = CreateEllipticRgnIndirect(R)
For x = R.Left To R.Right
For y = R.Top To R.Bottom
'If the point is in the region, draw a green pixel
If PtInRegion(mRGN, x, y) <> 0 Then
'Draw a green pixel
SetPixelV Me.hdc, x, y, vbGreen
ElseIf PtInRect(R, x, y) <> 0 Then
'Draw a red pixel
SetPixelV Me.hdc, x, y, vbRed
End If
Next y
Next x
'delete our region
DeleteObject mRGN
End Sub
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