Event handler used to set focus to the OpenGL drawing area when the mouse enters it in order to avoid unintended value changes when using the mouse wheel.

private void OnMouseEnter(
	Object sender,
	EventArgs e
)

Private Sub OnMouseEnter ( _
	sender As Object, _
	e As EventArgs _
)

private:
void OnMouseEnter(
	Object^ sender, 
	EventArgs^ e
)