IPCMSG_BLIT, // (win, sx, sy, dx, dy, w, h) - Blit locally
IPCMSG_DRAWCTL, // (win, x, y, w, h, ctlid) - Draw
IPCMSG_DRAWTEXT, // (win, x, y, fontid, text) - Draw text using an internal font
+ IPCMSG_FILLRECT, // (win, x, y, w, h, colour)
+ IPCMSG_DRAWRECT, // (win, x, y, w, h, colour)
// - Client-bound commands
IPCMSG_INPUTEVENT, // (u8 event, u16 win, ...)