I've written the library for mP, and mB followed easily. For mC I had to make some changes and have only the library with short description (no help files) and driver for KS107 based displays but if you wish to try, you may find it here
I've started working with the library you shared with me for mC, since I have a KS107 compatible screen I started testing. I can use most of the function on the library except uGLCD_Button. The compiler throughs an error indicating that the call signature doesn't match the definition of uGLCD_Char_Width in uGLDC.c. I guess the uGLCD_Button is internally calling uGLCD_Char_Width in order to centre the text inside the button, but there might be something wrong.
Can you help?
I can use uGLCD_Char_Width with no problems.