The mouse has an influence on the control only when it is over the active part of the control, defined by its mouse_mask (default is the entire bounding rectangle of the control).
When on the active area of a control, the mouse has the following behavior:
|
Mouse Event |
Action |
|---|---|
|
Left Click |
Acquire focus and start dragging or push (button) |
|
Left Double Click |
Acquire focus and (since 1.2.1) launch the fine tuning edit window (except for button): 
|
|
Right Click |
Set the value to default |
|
Mouse Wheel |
Increment or decrement the position |
|
Mouse Drag |
Change the control position depending on mouse movement (except button) |