nanogui: Thread: mouse problem

hi,

I am porting fl_editor to microwindows/fltk, and I got the correct display. but I can not make the mouse and keyboard run correctly.

after I run "nano-X -p & test/simple",  when I move mouse, mouse move right and go out of screen border quickly, if I try to drag it left, it will go back to righ border and hide.

I am a newbies to fltk and microwindows, I think you can give me some hint.

thank you very much,

dell