public static HIGHCONTRAST SystemParameterInfo_GetHIGHCONTRAST()
{
HIGHCONTRAST result = new HIGHCONTRAST
{
cbSize = Marshal.SizeOf(typeof(HIGHCONTRAST))
};
if (!NativeMethods._SystemParametersInfo_HIGHCONTRAST(SPI.GETHIGHCONTRAST, result.cbSize, ref result, SPIF.None))
{
HRESULT.ThrowLastError();
}
return(result);
}
private void _InitializeHighContrast()
{
HIGHCONTRAST hc = NativeMethods.SystemParameterInfo_GetHIGHCONTRAST();
HighContrast = (hc.dwFlags & HCF.HIGHCONTRASTON) != 0;
}
private void _InitializeHighContrast()
{
HIGHCONTRAST hIGHCONTRAST = Standard.NativeMethods.SystemParameterInfo_GetHIGHCONTRAST();
this.HighContrast = (int)(hIGHCONTRAST.dwFlags & HCF.HIGHCONTRASTON) != 0;
}
private static extern bool _SystemParametersInfo_HIGHCONTRAST(SPI uiAction, int uiParam, [In][Out] ref HIGHCONTRAST pvParam, SPIF fWinIni);
TOGGLEKEYS TK; // ToggleKeys
public frmMain()
{
Int32 DataSize; // Size of the data structure.
// Required for Windows Form Designer support
InitializeComponent();
// Initialize the data structures.
AT = new ACCESSTIMEOUT(); // Access Timeout
FK = new FILTERKEYS(); // FilterKeys
HC = new HIGHCONTRAST(); // High Contrast
MK = new MOUSEKEYS(); // MouseKeys
SR = false; // ScreenReader
SC = new SERIALKEYS(); // SerialKeys
SSound = false; // ShowSounds
SSentry = new SOUNDSENTRY(); // SoundSentry
SK = new STICKYKEYS(); // StickyKeys
TK = new TOGGLEKEYS(); // ToggleKeys
// Initialize the data structures and Choose menu options. The
// process includes getting the current option status (which
// fills out the data structure) and then comparing the flag
// values to see if the option is on.
// Access Timeout
DataSize = Marshal.SizeOf(AT);
AT.cbSize = Convert.ToUInt32(DataSize);
AT = (ACCESSTIMEOUT)GetAccessibleOption(
AT,
DataSize,
AccessType.SPI_GETACCESSTIMEOUT,
WinIniFlags.SPIF_NONE);
if ((AT.dwFlags & (Int32)AccessTimeoutFlags.ATF_TIMEOUTON) ==
(Int32)AccessTimeoutFlags.ATF_TIMEOUTON)
{
mnuChooseAccessTimeout.Checked = true;
}
// FilterKeys
DataSize = Marshal.SizeOf(FK);
FK.cbSize = Convert.ToUInt32(DataSize);
FK = (FILTERKEYS)GetAccessibleOption(
FK,
DataSize,
AccessType.SPI_GETFILTERKEYS,
WinIniFlags.SPIF_NONE);
if ((FK.dwFlags & (Int32)FilterKeysFlags.FKF_FILTERKEYSON) ==
(Int32)FilterKeysFlags.FKF_FILTERKEYSON)
{
mnuChooseFilterKeys.Checked = true;
}
// High Contrast
DataSize = Marshal.SizeOf(HC);
HC.cbSize = Convert.ToUInt32(DataSize);
HC = (HIGHCONTRAST)GetAccessibleOption(
HC,
DataSize,
AccessType.SPI_GETHIGHCONTRAST,
WinIniFlags.SPIF_NONE);
if ((HC.dwFlags & (Int32)HighContrastFlags.HCF_HIGHCONTRASTON) ==
(Int32)HighContrastFlags.HCF_HIGHCONTRASTON)
{
mnuChooseHighContrast.Checked = true;
}
// MouseKeys
DataSize = Marshal.SizeOf(MK);
MK.cbSize = Convert.ToUInt32(DataSize);
MK = (MOUSEKEYS)GetAccessibleOption(
MK,
DataSize,
AccessType.SPI_GETMOUSEKEYS,
WinIniFlags.SPIF_NONE);
if ((MK.dwFlags & (Int32)MouseKeysFlags.MKF_MOUSEKEYSON) ==
(Int32)MouseKeysFlags.MKF_MOUSEKEYSON)
{
mnuChooseMouseKeys.Checked = true;
}
// Screen Reader
DataSize = Marshal.SizeOf(SR);
SR = (bool)GetAccessibleOption(
SR,
DataSize,
AccessType.SPI_GETSCREENREADER,
WinIniFlags.SPIF_NONE);
if (SR)
{
mnuChooseScreenReader.Checked = true;
}
// SerialKeys
DataSize = Marshal.SizeOf(SC);
SC.cbSize = Convert.ToUInt32(DataSize);
SC = (SERIALKEYS)GetAccessibleOption(
SC,
DataSize,
AccessType.SPI_GETSERIALKEYS,
WinIniFlags.SPIF_NONE);
if ((SC.dwFlags & (Int32)SerialKeysFlags.SERKF_SERIALKEYSON) ==
(Int32)SerialKeysFlags.SERKF_SERIALKEYSON)
{
mnuChooseSerialKeys.Checked = true;
}
else if (SC.lpszActivePort == null)
{
// This is one of the few accessibility options not supported
// under Windows 2000/XP. Microsoft changed this behavior to
// ensure that SerialKeys devices would appear as standard
// input devices to the application. The lpszActivePort member
// will always contain a value for operating systems that
// support the SerialKeys feature.
mnuChooseSerialKeys.Enabled = false;
}
// ShowSounds
DataSize = Marshal.SizeOf(SSound);
SSound = (bool)GetAccessibleOption(
SSound,
DataSize,
AccessType.SPI_GETSHOWSOUNDS,
WinIniFlags.SPIF_NONE);
if (SSound)
{
mnuChooseShowSounds.Checked = true;
}
// SoundSentry
DataSize = Marshal.SizeOf(SSentry);
SSentry.cbSize = Convert.ToUInt32(DataSize);
SSentry = (SOUNDSENTRY)GetAccessibleOption(
SSentry,
DataSize,
AccessType.SPI_GETSOUNDSENTRY,
WinIniFlags.SPIF_NONE);
if ((SSentry.dwFlags & (Int32)SoundSentryFlags.SSF_SOUNDSENTRYON) ==
(Int32)SoundSentryFlags.SSF_SOUNDSENTRYON)
{
mnuChooseSoundSentry.Checked = true;
}
// StickyKeys
DataSize = Marshal.SizeOf(SK);
SK.cbSize = Convert.ToUInt32(DataSize);
SK = (STICKYKEYS)GetAccessibleOption(
SK,
DataSize,
AccessType.SPI_GETSTICKYKEYS,
WinIniFlags.SPIF_NONE);
if ((SK.dwFlags & (Int32)StickyKeysFlags.SKF_STICKYKEYSON) ==
(Int32)StickyKeysFlags.SKF_STICKYKEYSON)
{
mnuChooseStickyKeys.Checked = true;
}
// ToggleKeys
DataSize = Marshal.SizeOf(TK);
TK.cbSize = Convert.ToUInt32(DataSize);
TK = (TOGGLEKEYS)GetAccessibleOption(
TK,
DataSize,
AccessType.SPI_GETTOGGLEKEYS,
WinIniFlags.SPIF_NONE);
if ((TK.dwFlags & (Int32)ToggleKeysFlags.TKF_TOGGLEKEYSON) ==
(Int32)ToggleKeysFlags.TKF_TOGGLEKEYSON)
{
mnuChooseToggleKeys.Checked = true;
}
}
