<aPos>
<aPos> is an array containing two elements {nX, nY} that specify the current position of the mouse pointer. By default, the coordinates are relative to the
lower left corner of the Xbase Part receiving the message.
Event XbpWindow():wheel Foundation
Mouse wheel is activated.
Syntax
:wheel := {| aPos, aWheel, self | ... }
:wheel( <aPos>, <aWheel> ) --> self
xbeM_Wheel (1048599)
Parameters
<aWheel>
<aWheel> is an array with five elements {nKeyMask, nDistance, nLines, nOffset, nLinesToScroll}.
The first element (nKeyMask) is a numeric value indicating special keys pressed while the user rotates the mouse wheel. The value of this element is either
0 (no special key is pressed) or the result of one or more of the following #define constants listed in XBP.CH.
Constants for key states
| Constant | Description |
|---|---|
| XBP_MK_LBUTTON | Left mouse button is pressed |
| XBP_MK_MBUTTON | Middle mouse button is pressed |
| XBP_MK_RBUTTON | Right mouse button is pressed |
| XBP_MK_CONTROL | Ctrl key is pressed |
| XBP_MK_SHIFT | Shift key is pressed |
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