_MOUSEMOVE - QB64 Wiki

_MOUSEMOVE

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The _MOUSEMOVE statement moves the mouse pointer to a new position on the screen as determined by the column and row coordinates.


Syntax:

_MOUSEMOVE column%, row%


Parameters:

  • INTEGER column is the horizontal pixel coordinate to place the mouse pointer and can be any value from 0 to _WIDTH(0) - 1.
  • INTEGER row is the vertical pixel position to place the mouse pointer and can be any value from 0 to _HEIGHT(0) - 1


Description:

  • Maximum coordinate values are based on a program's current SCREEN mode resolution or the pixel size set by _NEWIMAGE.
  • SCREEN 0 uses text block coordinates. Coordinates off of the screen will create an "Illegal Function Call" ERROR!
  • Can be used to position the pointer to a default dialog button or move the cursor away from a button so it is not clicked twice.
  • Does NOT require _MOUSEINPUT to be used, but all moves will be remembered and can be read by mouse functions.
  • Currently not supported in QB64 GL


Example: How to move the mouse cursor using remembered mouse movements. Press any key to quit.

SCREEN 12 i = _MOUSEINPUT 'start reading mouse events before INPUT to hold in memory PRINT INPUT "Move the mouse pointer and make a few clicks, then press Enter!", dummy$ _MOUSEMOVE 1, 1 DO: _LIMIT 30 count = count + 1 i = _MOUSEINPUT x = _MOUSEX: y = _MOUSEY b = _MOUSEBUTTON(1) PRINT count, x, y, b _MOUSEMOVE x, y LOOP UNTIL i = 0 OR INKEY$ > "" PRINT "Done!"

Explanation: The _MOUSEINPUT function will hold previous and _MOUSEMOVE events so press any key when you want to quit.
Note: INPUT, INPUT$ and LINE INPUT will allow continued reading of mouse events while awaiting program user input!
It is recommended that a WHILE _MOUSEINPUT: WEND loop be used immediately after to clear stored mouse events.


See also:



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