{{DISPLAYTITLE:_MOUSEMOVEMENTX}}
The [[_MOUSEMOVEMENTX]] function returns the relative horizontal position of the mouse cursor as positive or negative values.  


{{PageSyntax}} 
: ''horizontalMove'' = [[_MOUSEMOVEMENTX]]


* Returns the relative horizontal cursor pixel position compared to the previous cursor position. Negative values are moves to the left.
* Can also be used to check for any mouse movements to enable a program or close [[Screen Saver Programs]]. 
* On Windows only, [[_MOUSEMOVEMENTX]] will continue to track the mouse when it is outside the program window.

{{PageExamples}}
''Example 1:'' Since values returned are relative to the last position, the returns can be positive or negative.
{{CodeStart}} '' ''
{{Cl|SCREEN}} 12
PX = 320: PY = 240 'center position
{{Cl|DO...LOOP|DO}}: {{Cl|_LIMIT}} 200
  {{Cl|DO...LOOP|DO}} {{Cl|WHILE}} {{Cl|_MOUSEINPUT}}
    PX = PX + {{Cl|_MOUSEMOVEMENTX}}
    PY = PY + {{Cl|_MOUSEMOVEMENTY}}
  {{Cl|LOOP}}
  {{Cl|CLS}}
  {{Cl|CIRCLE}} (PX, PY), 10, 10
  {{Cl|LOCATE}} 1, 1: {{Cl|PRINT}} PX, PY
{{Cl|LOOP}} {{Cl|UNTIL}} {{Cl|INKEY$}} = {{Cl|CHR$}}(27) 'escape key exit '' ''
{{CodeEnd}}


''Example 2:'' MOD is used to keep horizontal movement of the circle and cursor inside of the SCREEN 13 window(320). 
{{CodeStart}} '' ''
{{Cl|SCREEN}} 13, , 1, 0
{{Cl|DO...LOOP|DO}}: {{Cl|_LIMIT}} 200
  {{Cl|DO...LOOP|DO}} {{Cl|WHILE}} {{Cl|_MOUSEINPUT}}
    x = x + {{Cl|_MOUSEMOVEMENTX}}
    y = y + {{Cl|_MOUSEMOVEMENTY}}
  {{Cl|LOOP}}
  x = (x + 320) {{Cl|MOD}} 320 'keeps object on screen
  y = (y + 200) {{Cl|MOD}} 200 'remove if off screen moves are desired
  {{Cl|CLS}}
  {{Cl|CIRCLE}} (x, y), 20
  {{Cl|PCOPY}} 1, 0
{{Cl|LOOP}} {{Cl|UNTIL}} {{Cl|INKEY$}} &lt;> "" 'press any key to exit '' ''
{{CodeEnd}}
: '''NOTE:''' When using the function this way, give the user a keypress exit option. Make sure the user has some way to exit that is not dependent on clicking the X button.


{{PageSeeAlso}}
* [[_MOUSEMOVEMENTY]]
* [[_MOUSEINPUT]], [[_MOUSEX]]
* [[_DEVICES]], [[_DEVICEINPUT]]
* [[_WHEEL]], [[_LASTWHEEL]]
* [[_AXIS]], [[_LASTAXIS]] 
* [[_MOUSESHOW]], [[_MOUSEHIDE]]
* [[Screen Saver Programs]]


{{PageNavigation}}
