Hi Josef,
As far as my analysis is concerned, there is nothing wrong with your userconrol or in our diagram control. I believe that the following concept has been missed out in your programming.
1.Your activeX control loads the webpage so definitely its going to take some load time.
2. But before even your control loads the page it has been drawn to the screen. So it is not showing any webpage in it.
3. Whenever you minimize and maximize or do some actions that make the form to paint again and at that time your activeX would have loaded the page in it and therefore when it is drawn at that time it will display the page.
4. So all you have to do is make your form or usercontrol to redraw itself once the page has been loaded completely.
5. I have added an event handler for DocumentComplete event of your AxSHDocVw control and this event will be fired once the page gets loaded and at that time refresh the form thereby making it to redraw.
6. Find the modified code of your usercontrol in the sample provide in the path below.
Note:The project has been upgraded to 2008 as i used VS 2008.
http://www.syncfusion.com/support/user/uploads/Win_Tools_F734402030546094.zipRun the sample and wait for some time for the page to load and display.
I hope this will solve your problem and if so let me know if I can mark this incident as Closed.
Regards,
Dinesh