SPI_SETMOUSEBUTTONSWAP top-level constant Null safety
Swaps or restores the meaning of the left and right mouse buttons. The uiParam parameter specifies TRUE to swap the meanings of the buttons, or FALSE to restore their original meanings.
To retrieve the current setting, call GetSystemMetrics with the SM_SWAPBUTTON flag.
const SPI_SETMOUSEBUTTONSWAP = 0x0021;