I made a custom control and place it in a form.

when i run my app the form backcolor is white and then paints to the normal control.

If i delete the custom control from the form the form is shown normal.

It is a simple line control.

Is there something i can do in order to show the form fast?

Something i noticed is that the second time i run the same form in the app, it is show normal.

I already try
- Refresh
- Invalite
- UpdateWindow API
- RedrawWindow API

None of this worked.

I also compiled the EXE a DLL using Release mode and nothing happened.