This example constructs a circle on your form with random FillColor and FillStyle property settings as you click the mouse. To try this example, paste the code into the Declarations section of a form, and then press F5 and click the form.
Private Sub Form_MouseDown (Button As Integer, Shift As Integer, X As Single, Y As Single)
FillColor = QBColor(Int(Rnd * 15)) ' Choose random FillColor.
FillStyle = Int(Rnd * 8) ' Choose random FillStyle.
Circle (X, Y), 250 ' Draw a circle.
End Sub