I've had a play around and found a few small bugs and some suggestions, so this is a long mixture:
Resize a window as small as it will go, let go of the mouse button then enlarge the window again and the grid disappears.
Create a web gadget then delete it and it still appears on the window.
Create a web gadget then move or resize the window and it disappears.
When you create a new gadget and you're dragging the mouse to set it's size, if you drag the mouse over a web gadget then the gadget won't resize. If you resize a gadget that has already been created it works ok.
Change Propiedades to Properties, Quit Tab to Remove Tab and Tipo to Type.
Maybe you could make it possible to move a panel gadget by dragging anywhere in them (not just in the tabs).
Make double clicking in a tab do the same as edit panel gadgets.
Remove panel options from the popup menu unless the gadget is a panel (instead of disabling them).
If you move the window or right click on a gadget, does the properties and the window need to update?
Change the keys used in the panel gadget to change tabs (maybe tab key to go forward, shift-tab to go back?), this is so that...
Cursor keys could move gadgets (by the current grid spacing).
Shift + cursor keys could resize gadgets (by the current grid spacing).
Also holding down control moves/resizes by one pixel (instead of the grid spacing).
Pressing delete could delete the current object.
Clicking left mouse button to create a gadget, but not dragging the mouse, could create a gadget of a default size.
Add support for custom properties (like Visual Designer has the Visual Designer Constants.prefs file).
If you create a gadget (eg. a button) and then create a panel gadget that partially covers the button and it crashes.
If you make a small list icon (just a few pixels), select another gadget, then you can't select the list icon again by left clicking on it.
Sorry for the long list! Keep up the great work
