/// <summary>
/// False to stop the sticky keys popup.
/// True to return to whatever the system has been set to.
/// </summary>
public static void AllowAccessibilityShortcutKeys(bool bAllowKeys)
{
if (!StartupAccessibilitySet)
{
StartupStickyKeys.cbSize = SKEYSize;
StartupToggleKeys.cbSize = SKEYSize;
StartupFilterKeys.cbSize = FKEYSize;
SystemParametersInfo(SPI_GETSTICKYKEYS, SKEYSize, ref StartupStickyKeys, 0);
SystemParametersInfo(SPI_GETTOGGLEKEYS, SKEYSize, ref StartupToggleKeys, 0);
SystemParametersInfo(SPI_GETFILTERKEYS, FKEYSize, ref StartupFilterKeys, 0);
StartupAccessibilitySet = true;
}
if (bAllowKeys)
{
// Restore StickyKeys/etc to original state and enable Windows key
SystemParametersInfo(SPI_SETSTICKYKEYS, SKEYSize, ref StartupStickyKeys, 0);
SystemParametersInfo(SPI_SETTOGGLEKEYS, SKEYSize, ref StartupToggleKeys, 0);
SystemParametersInfo(SPI_SETFILTERKEYS, FKEYSize, ref StartupFilterKeys, 0);
}
else
{
// Disable StickyKeys/etc shortcuts but if the accessibility feature is on,
// then leave the settings alone as its probably being usefully used
SKEY skOff = StartupStickyKeys;
if ((skOff.dwFlags & SKF_STICKYKEYSON) == 0)
{
// Disable the hotkey and the confirmation
skOff.dwFlags &= ~SKF_HOTKEYACTIVE;
skOff.dwFlags &= ~SKF_CONFIRMHOTKEY;
SystemParametersInfo(SPI_SETSTICKYKEYS, SKEYSize, ref skOff, 0);
}
SKEY tkOff = StartupToggleKeys;
if ((tkOff.dwFlags & TKF_TOGGLEKEYSON) == 0)
{
// Disable the hotkey and the confirmation
tkOff.dwFlags &= ~TKF_HOTKEYACTIVE;
tkOff.dwFlags &= ~TKF_CONFIRMHOTKEY;
SystemParametersInfo(SPI_SETTOGGLEKEYS, SKEYSize, ref tkOff, 0);
}
FILTERKEY fkOff = StartupFilterKeys;
if ((fkOff.dwFlags & FKF_FILTERKEYSON) == 0)
{
// Disable the hotkey and the confirmation
fkOff.dwFlags &= ~FKF_HOTKEYACTIVE;
fkOff.dwFlags &= ~FKF_CONFIRMHOTKEY;
SystemParametersInfo(SPI_SETFILTERKEYS, FKEYSize, ref fkOff, 0);
}
}
}
public static void AllowAccessibilityShortcutKeys(bool bAllowKeys)
{
if (!StartupAccessibilitySet)
{
StartupStickyKeys.cbSize = SKEYSize;
StartupToggleKeys.cbSize = SKEYSize;
StartupFilterKeys.cbSize = FKEYSize;
SystemParametersInfo(SPI_GETSTICKYKEYS, SKEYSize, ref StartupStickyKeys, 0);
SystemParametersInfo(SPI_GETTOGGLEKEYS, SKEYSize, ref StartupToggleKeys, 0);
SystemParametersInfo(SPI_GETFILTERKEYS, FKEYSize, ref StartupFilterKeys, 0);
StartupAccessibilitySet = true;
}
if (bAllowKeys)
{
SystemParametersInfo(SPI_SETSTICKYKEYS, SKEYSize, ref StartupStickyKeys, 0);
SystemParametersInfo(SPI_SETTOGGLEKEYS, SKEYSize, ref StartupToggleKeys, 0);
SystemParametersInfo(SPI_SETFILTERKEYS, FKEYSize, ref StartupFilterKeys, 0);
}
else
{
SKEY skOff = StartupStickyKeys;
if ((skOff.dwFlags & SKF_STICKYKEYSON) == 0)
{
skOff.dwFlags &= ~SKF_HOTKEYACTIVE;
skOff.dwFlags &= ~SKF_CONFIRMHOTKEY;
SystemParametersInfo(SPI_SETSTICKYKEYS, SKEYSize, ref skOff, 0);
}
SKEY tkOff = StartupToggleKeys;
if ((tkOff.dwFlags & TKF_TOGGLEKEYSON) == 0)
{
tkOff.dwFlags &= ~TKF_HOTKEYACTIVE;
tkOff.dwFlags &= ~TKF_CONFIRMHOTKEY;
SystemParametersInfo(SPI_SETTOGGLEKEYS, SKEYSize, ref tkOff, 0);
}
FILTERKEY fkOff = StartupFilterKeys;
if ((fkOff.dwFlags & FKF_FILTERKEYSON) == 0)
{
fkOff.dwFlags &= ~FKF_HOTKEYACTIVE;
fkOff.dwFlags &= ~FKF_CONFIRMHOTKEY;
SystemParametersInfo(SPI_SETFILTERKEYS, FKEYSize, ref fkOff, 0);
}
}
}
private static extern bool SystemParametersInfo(uint action, uint param,
ref FILTERKEY vparam, uint init);
private static extern bool SystemParametersInfo(uint action, uint param, ref FILTERKEY vparam, uint init);
