GET_WHEEL_DELTA_WPARAM macro (winuser.h)

Retrieves the wheel-delta value from the specified WPARAM value.

Syntax

void GET_WHEEL_DELTA_WPARAM(
   wParam
);

Parameters

wParam

The value to be converted.

Return value

None

Requirements

Requirement Value
Minimum supported client Windows 2000 Professional [desktop apps only]
Minimum supported server Windows 2000 Server [desktop apps only]
Target Platform Windows
Header winuser.h (include Windows.h)

See also

Mouse Input Overview