An integer count of wheel detents from -17,895,697 through 17,895,697. Each unit emits one Windows WHEEL_DELTA step (120); larger magnitudes are rejected because the resulting signed 32-bit Windows wheel delta would overflow. The OS/application decides how many lines or pixels each detent scrolls.
An integer count of wheel detents from
-17,895,697through17,895,697. Each unit emits one WindowsWHEEL_DELTAstep (120); larger magnitudes are rejected because the resulting signed 32-bit Windows wheel delta would overflow. The OS/application decides how many lines or pixels each detent scrolls.