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54 lines
2.1 KiB
Markdown
54 lines
2.1 KiB
Markdown
The [_MOUSEX](_MOUSEX) function returns the current horizontal (column) mouse cursor position when read after [_MOUSEINPUT](_MOUSEINPUT).
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## Syntax
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> pixelColumn% = [_MOUSEX](_MOUSEX)
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## Description
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* [SCREEN](SCREEN) 0 returns the [INTEGER](INTEGER) horizontal text column position (from build 20170817/62 onward); older versions return a [SINGLE](SINGLE) horizontal text column position. Use [INTEGER](INTEGER) variables to avoid floating decimal returns.
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* Graphic screen modes 1, 2 and 7 to 13 and [_NEWIMAGE](_NEWIMAGE) 32 bit return the [INTEGER](INTEGER) pixel columns.
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* To calculate text columns in graphic modes, divide the return by 8 or the [_FONTWIDTH](_FONTWIDTH) of [_FONT](_FONT) characters.
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* [_MOUSEINPUT](_MOUSEINPUT) must be used to detect any changes in the mouse position and is **required** for any coordinate returns.
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## QBasic
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* In [SCREEN](SCREEN) 0, QBasic's [ABSOLUTE](ABSOLUTE) returned graphic coordinates. QB64 mouse functions return the text coordinates.
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## Example(s)
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A simple mouse drawing board using [_MOUSEX](_MOUSEX) and [_MOUSEY](_MOUSEY) coordinate values.
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```vb
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SCREEN 12
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LINE (99, 9)-(601, 401), 7, BF
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LINE (101, 11)-(599, 399), 8, BF
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tm$ = " Column = ### Row = ### Button1 = ## Button2 = ## Button3 = ##"
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LOCATE 29, 20: PRINT "LeftButton = draw - RightButton = Erase";
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DO: K$ = INKEY$
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DO WHILE _MOUSEINPUT
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X = _MOUSEX: Y = _MOUSEY
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IF X > 100 AND X < 600 AND PX > 100 AND PX < 600 THEN
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IF Y > 10 AND Y < 400 AND PY > 10 AND PY < 400 THEN
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IF _MOUSEBUTTON(1) THEN LINE (PX, PY)-(X, Y), 15
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IF _MOUSEBUTTON(2) THEN LINE (101, 11)-(599, 399), 8, BF
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END IF
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END IF
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PX = X: PY = Y
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LOCATE 28, 10: PRINT USING tm$; X; Y; _MOUSEBUTTON(1); _MOUSEBUTTON(2); _MOUSEBUTTON(3)
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LOOP
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LOOP UNTIL K$ = CHR$(27)
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SYSTEM
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```
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## See Also
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* [_MOUSEY](_MOUSEY)
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* [_MOUSEBUTTON](_MOUSEBUTTON), [_MOUSEWHEEL](_MOUSEWHEEL)
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* [_MOUSEINPUT](_MOUSEINPUT), [_MOUSEMOVE](_MOUSEMOVE)
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* [_MOUSESHOW](_MOUSESHOW), [_MOUSEHIDE](_MOUSEHIDE)
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* [_MOUSEMOVEMENTX](_MOUSEMOVEMENTX), [_MOUSEMOVEMENTY](_MOUSEMOVEMENTY) (relative pointer moves)
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* [Controller Devices](Controller-Devices)
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