Silly X11.

gistfile1.txt

# move mouse 1 pixel (no buttons/keys pressed)

MotionNotify event, serial 37, synthetic NO, window 0x4a00001,
    root 0x293, subw 0x0, time 37828593, (89,92), root:(92,213),
    state 0x10, is_hint 0, same_screen YES

# press left mouse

ButtonPress event, serial 37, synthetic NO, window 0x4a00001,
    root 0x293, subw 0x0, time 37830561, (89,92), root:(92,213),
    state 0x10, button 1, same_screen YES

# drag 1 pixel

MotionNotify event, serial 37, synthetic NO, window 0x4a00001,
    root 0x293, subw 0x0, time 37832561, (89,91), root:(92,212),
    state 0x110, is_hint 0, same_screen YES

# let go of left mouse

ButtonRelease event, serial 37, synthetic NO, window 0x4a00001,
    root 0x293, subw 0x0, time 37834561, (89,91), root:(92,212),
    state 0x110, button 1, same_screen YES

# press alt

KeyPress event, serial 37, synthetic NO, window 0x4a00001,
    root 0x293, subw 0x0, time 37835585, (89,91), root:(92,212),
    state 0x10, keycode 64 (keysym 0xffe9, Alt_L), same_screen YES,
    XLookupString gives 0 bytes: 
    XmbLookupString gives 0 bytes: 
    XFilterEvent returns: False

# press left mouse

LeaveNotify event, serial 37, synthetic NO, window 0x4a00001,
    root 0x293, subw 0x0, time 37836946, (89,91), root:(92,212),
    mode NotifyGrab, detail NotifyAncestor, same_screen YES,
    focus YES, state 280

FocusOut event, serial 37, synthetic NO, window 0x4a00001,
    mode NotifyGrab, detail NotifyAncestor

# drag mouse 1 pixel

ConfigureNotify event, serial 37, synthetic YES, window 0x4a00001,
    event 0x4a00001, window 0x4a00001, (1,119), width 178, height 178,
    border_width 2, above 0x0, override NO

# let go out left mouse

EnterNotify event, serial 37, synthetic NO, window 0x4a00001,
    root 0x293, subw 0x0, time 37844400, (89,91), root:(93,212),
    mode NotifyUngrab, detail NotifyAncestor, same_screen YES,
    focus YES, state 24

KeymapNotify event, serial 37, synthetic NO, window 0x0,
    keys:  4294967187 0   0   0   0   0   0   0   1   0   0   0   0   0   0   0   
           0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   

FocusOut event, serial 37, synthetic NO, window 0x4a00001,
    mode NotifyUngrab, detail NotifyPointer

FocusIn event, serial 37, synthetic NO, window 0x4a00001,
    mode NotifyUngrab, detail NotifyAncestor

KeymapNotify event, serial 37, synthetic NO, window 0x0,
    keys:  2   0   0   0   0   0   0   0   1   0   0   0   0   0   0   0   
           0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   

# let go of alt

KeyRelease event, serial 37, synthetic NO, window 0x4a00001,
    root 0x293, subw 0x0, time 37845208, (89,91), root:(93,212),
    state 0x18, keycode 64 (keysym 0xffe9, Alt_L), same_screen YES,
    XLookupString gives 0 bytes: 
    XFilterEvent returns: False