If you right-click on your gadget --> click Setting --> Position--> You should see half a dozen options ranging from Always on Top to On Desktop.
Click On Desktop then when you press Show Desktop it wont minimise the rainmeter gadgets
If you have a lot of gadgets that need placing on the desktop then right click any of your gadgets -->Rainmeter Menu --> Edit Settings... (which should bring up a text file)
Find&Replace 'AlwaysOnTop=0' with 'AlwaysOnTop=-2' and click Replace All
Hope this helps.
I'm not using it at the moment,but founded this on the Internet. Check if it helps
windows 7 - Keep rainmeter from minimizing - Super User
If you right-click on your gadget --> click Setting --> Position--> You should see half a dozen options ranging from Always on Top to On Desktop.
Click On Desktop then when you press Show Desktop it wont minimise the rainmeter gadgets
If you have a lot of gadgets that need placing on the desktop then right click any of your gadgets -->Rainmeter Menu --> Edit Settings... (which should bring up a text file)
Find&Replace 'AlwaysOnTop=0' with 'AlwaysOnTop=-2' and click Replace All
Hope this helps.