Wiimote with Mouse Pad (Dolphin Emulator)

I recently downloaded Metroid Prime Trilogy, and I set my configurations for the A, B, etc. buttons. However, when I point my mouse to the top of the screen, the in-game mouse doesn't go all the way. I tried increasing the sensitivity of the emulator to fix this but it didn't do anything... this is important for me because I can't aim all the way up or change certain settings (really bad because I can't click some buttons in Samus's ship I MP3's beginning). Also, telling me to use a real Wii mote is not going to fix this problem. I require a mouse for this, sorry if that causes a setback.

the only solution I found was to run dolphin with a smaller window