Looks good functionality wise, you can even "compile" an app to a HTML file. This is exactly how something like this should work :-).

However, appearance-wise it looks very noisy/distorted with some crooked elements (especially window buttons) and missing visual parts (mainly bevel edges). I made a screenshot with comments for it[0].

I guess this was made with AI which isn't that great at making stuff pixel-level unless you explicitly told it to check reference images and be pixel level precise, so i'd recommend firing up a VM with WinXP in classic theme mode (or even better, 86Box running Windows 95 or Windows 98) and grabbing a bunch of screenshots.

Also i found some bugs:

1. You cannot click on non-visual controls (or disabled controls) to select them (e.g. timer). You can still use the rect selection to select them and drag them around by resizing via the handles but clicking on them selects the form.

2. Adding a control doesn't update the controls list in the editor unless you double click a control without a handler (i.e. the form, as long as you remove the Form_Load handler). Even after the controls are updated, if the event list has only one event, you cannot have the editor add by selecting it (i guess because it is already the selected item and you don't receive an event about selecting it).

I tried to make a simple pong game but it seems no key or mouse motion events are implemented yet so all i did was to make a bouncing OptionButton :-P.

[0] http://runtimeterror.com/pages/iv/images/5ffbf1494821c77a3fe...