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| Movements to the left generate negative '''x''' values and to the right generate positive '''x''' values. Movements up (scroll forward) generate negative '''y''' values and down (scroll backward) generate positive '''y''' values. <<Color2(green,This information needs to be verified.)>> <<Color2(red, The information is correct for Windows and Mac Os X. Other platforms not checked.)>> | Movements to the right generate negative '''x''' values and to the left generate positive '''x''' values. Movements down (scroll backward) generate negative '''y''' values and up (scroll forward) generate positive '''y''' values. |
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SDL_MouseWheelEvent
A structure that contains mouse wheel event information.
Contents
Data Fields
Uint32 |
type |
SDL_MOUSEWHEEL |
Uint32 |
windowID |
the window with mouse focus, if any |
Uint32 |
which |
the mouse instance id, or SDL_TOUCH_MOUSEID; see Remarks for details |
Sint32 |
x |
the amount scrolled horizontally |
Sint32 |
y |
the amount scrolled vertically |
Code Examples
You can add your code example here
Remarks
SDL_MouseWheelEvent is a member of the SDL_Event union and is used when an event of type SDL_MOUSEWHEEL is reported. You would access it through the event's wheel field.
An SDL_MOUSEWHEEL event occurs whenever a user moves the mouse wheel.
Movements to the right generate negative x values and to the left generate positive x values. Movements down (scroll backward) generate negative y values and up (scroll forward) generate positive y values.
which may be SDL_TOUCH_MOUSEID, for events that were generated by a touch input device, and not a real mouse. You might want to ignore such events, if your application already handles SDL_TouchFingerEvent.
Related Enumerations
