启用内置辅助功能

以下代码片段使用SystemParametersInfo功能启用FilterKeys功能：

FILTERKEYS fk;

BOOL bSuccess;

//填写FILTERKEYS结构的成员

fk.cbSize = sizeof(FILTERKEYS);

fk.dwFlags = (FKF_FILTERKEYSON | FKF_HOTKEYACTIVE |

FKF_AVAILABLE | FKF_HOTKEYSOUND | FKF_CLICKON);

fk.iWaitMSec = 1000;

fk.iDelayMSec = 1000;

fk.iRepeatMSec = 500;

fk.iBounceMSec = 0;

//使用SPI_SETFILTERKEYS代码调用SystemParametersInfo

bSuccess = SystemParametersInfo(SPI_SETFILTERKEYS, 0, (LPVOID) &fk, 0);