I have found a solution.
I have gone to:
https://fdossena.com/?p=mesa/index.fragthen i have clicked on the button icon "windows", downloaded the file.
After i have extracted the file, there is an "opengl32.dll" file into the folder.
I have simply copied the "opengl32.dll" file into the directory of Solarus v1.6, where there is the (shield), (gamepad) icon software.
Next i simply open the Solarus Developper v1.6 and "It Work".
I'm happy with it because i can run and test creations made with Solarus v1.6