God_Ares
asked on
SystemParametersInfo
Could uou provide me with a full list of
SystemParametersInfo acivitys..
I checked ms, but nothing much there..
eg. no sign of action 97!!??
SystemParametersInfo acivitys..
I checked ms, but nothing much there..
eg. no sign of action 97!!??
Oh, and a quick check of the msdn site found this link: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wcesdkr/htm/_wcesdk_win32_systemparametersinfo.asp
GL
Mike
GL
Mike
In this case you should not trust the win32.hlp file. It's quite outdated. Microsoft's online documentation shows some more flags. We should not look at the winCE documentation, though, Mike... :-) The order of the hits at Microsoft's search machine is quite strange. Here comes the correct link, it was at the second page, don't ask me why - it should have been the very top hit:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/sysinfo/hh/sysmgmt/sysinfo_4p67.asp
Regards, Madshi.
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/sysinfo/hh/sysmgmt/sysinfo_4p67.asp
Regards, Madshi.
Yes this is quite true, and i _did_ grab the first result from the MSDN sear engine, the point, though, was the fact that there was one. I would also note that as the function is defined in window.pas one could also search for the literal 97 in that file. Doing so yeilds: SPI_SCREENSAVERRUNNING = 97; . With the constant known one should be able to find ample documentation.
GL
Mike
ps, and sorry about the rather, ummm, curt tone. It's just that it seems we've had some challenges recently with questions obviously comming from people with either no documentation, or no desire to read it. The latter, well, I guess it's always possible they aren't familiar enough with the system to ask the 'right' questions. The former, OTOH, I just don't know what to say. Even the free version of D6 comes with a fair amount of documentation so I guess the only people without any must have stolen their copy.
Again, God_Ares, I apologise, as it's clear from your grading record that you don't neatly fall into either of these categories. The comments were made in haste while frustrated with another issue.
GL
Mike
ps, and sorry about the rather, ummm, curt tone. It's just that it seems we've had some challenges recently with questions obviously comming from people with either no documentation, or no desire to read it. The latter, well, I guess it's always possible they aren't familiar enough with the system to ask the 'right' questions. The former, OTOH, I just don't know what to say. Even the free version of D6 comes with a fair amount of documentation so I guess the only people without any must have stolen their copy.
Again, God_Ares, I apologise, as it's clear from your grading record that you don't neatly fall into either of these categories. The comments were made in haste while frustrated with another issue.
ASKER
Hi
eddy I doupt that 97 = for screensafer purposes
just drop 2 buttons on a form
var OldVal : Longint;
begin
SystemParametersInfo(97, Word(True), @OldVal, 0); //disable;
change Word(True) -> Word(False) to enable keys...
end;
implement this code
and try to pres alt ctr del
thank you all for your effort
I still think there are undocumented values..
if not i'll just accept the best comment as an awnser (Madshi's comment until now) in 5 day's.
Greetz
eddy I doupt that 97 = for screensafer purposes
just drop 2 buttons on a form
var OldVal : Longint;
begin
SystemParametersInfo(97, Word(True), @OldVal, 0); //disable;
change Word(True) -> Word(False) to enable keys...
end;
implement this code
and try to pres alt ctr del
thank you all for your effort
I still think there are undocumented values..
if not i'll just accept the best comment as an awnser (Madshi's comment until now) in 5 day's.
Greetz
I think the 97 is documented in the online documentation. Not sure, though...
ASKER CERTIFIED SOLUTION
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To access this solution, you must be a member of Experts Exchange.
ASKER
Hi
eddy I doupt that 97 = for screensafer purposes
just drop 2 buttons on a form
var OldVal : Longint;
begin
SystemParametersInfo(97, Word(True), @OldVal, 0); //disable;
change Word(True) -> Word(False) to enable keys...
end;
implement this code
and try to pres alt ctr del
thank you all for your effort
I still think there are undocumented values..
if not i'll just accept the best comment as an awnser (Madshi's comment until now) in 5 day's.
Greetz
eddy I doupt that 97 = for screensafer purposes
just drop 2 buttons on a form
var OldVal : Longint;
begin
SystemParametersInfo(97, Word(True), @OldVal, 0); //disable;
change Word(True) -> Word(False) to enable keys...
end;
implement this code
and try to pres alt ctr del
thank you all for your effort
I still think there are undocumented values..
if not i'll just accept the best comment as an awnser (Madshi's comment until now) in 5 day's.
Greetz
from PlatformSDK WinUser.h
/*
* Parameter for SystemParametersInfo()
*/
#define SPI_GETBEEP 1
#define SPI_SETBEEP 2
#define SPI_GETMOUSE 3
#define SPI_SETMOUSE 4
#define SPI_GETBORDER 5
#define SPI_SETBORDER 6
#define SPI_GETKEYBOARDSPEED 10
#define SPI_SETKEYBOARDSPEED 11
#define SPI_LANGDRIVER 12
#define SPI_ICONHORIZONTALSPACING 13
#define SPI_GETSCREENSAVETIMEOUT 14
#define SPI_SETSCREENSAVETIMEOUT 15
#define SPI_GETSCREENSAVEACTIVE 16
#define SPI_SETSCREENSAVEACTIVE 17
#define SPI_GETGRIDGRANULARITY 18
#define SPI_SETGRIDGRANULARITY 19
#define SPI_SETDESKWALLPAPER 20
#define SPI_SETDESKPATTERN 21
#define SPI_GETKEYBOARDDELAY 22
#define SPI_SETKEYBOARDDELAY 23
#define SPI_ICONVERTICALSPACING 24
#define SPI_GETICONTITLEWRAP 25
#define SPI_SETICONTITLEWRAP 26
#define SPI_GETMENUDROPALIGNMENT 27
#define SPI_SETMENUDROPALIGNMENT 28
#define SPI_SETDOUBLECLKWIDTH 29
#define SPI_SETDOUBLECLKHEIGHT 30
#define SPI_GETICONTITLELOGFONT 31
#define SPI_SETDOUBLECLICKTIME 32
#define SPI_SETMOUSEBUTTONSWAP 33
#define SPI_SETICONTITLELOGFONT 34
#define SPI_GETFASTTASKSWITCH 35
#define SPI_SETFASTTASKSWITCH 36
#if(WINVER >= 0x0400)
#define SPI_SETDRAGFULLWINDOWS 37
#define SPI_GETDRAGFULLWINDOWS 38
#define SPI_GETNONCLIENTMETRICS 41
#define SPI_SETNONCLIENTMETRICS 42
#define SPI_GETMINIMIZEDMETRICS 43
#define SPI_SETMINIMIZEDMETRICS 44
#define SPI_GETICONMETRICS 45
#define SPI_SETICONMETRICS 46
#define SPI_SETWORKAREA 47
#define SPI_GETWORKAREA 48
#define SPI_SETPENWINDOWS 49
#define SPI_GETHIGHCONTRAST 66
#define SPI_SETHIGHCONTRAST 67
#define SPI_GETKEYBOARDPREF 68
#define SPI_SETKEYBOARDPREF 69
#define SPI_GETSCREENREADER 70
#define SPI_SETSCREENREADER 71
#define SPI_GETANIMATION 72
#define SPI_SETANIMATION 73
#define SPI_GETFONTSMOOTHING 74
#define SPI_SETFONTSMOOTHING 75
#define SPI_SETDRAGWIDTH 76
#define SPI_SETDRAGHEIGHT 77
#define SPI_SETHANDHELD 78
#define SPI_GETLOWPOWERTIMEOUT 79
#define SPI_GETPOWEROFFTIMEOUT 80
#define SPI_SETLOWPOWERTIMEOUT 81
#define SPI_SETPOWEROFFTIMEOUT 82
#define SPI_GETLOWPOWERACTIVE 83
#define SPI_GETPOWEROFFACTIVE 84
#define SPI_SETLOWPOWERACTIVE 85
#define SPI_SETPOWEROFFACTIVE 86
#define SPI_SETCURSORS 87
#define SPI_SETICONS 88
#define SPI_GETDEFAULTINPUTLANG 89
#define SPI_SETDEFAULTINPUTLANG 90
#define SPI_SETLANGTOGGLE 91
#define SPI_GETWINDOWSEXTENSION 92
#define SPI_SETMOUSETRAILS 93
#define SPI_GETMOUSETRAILS 94
#define SPI_SETSCREENSAVERRUNNING 97
#define SPI_SCREENSAVERRUNNING SPI_SETSCREENSAVERRUNNING
#endif /* WINVER >= 0x0400 */
#define SPI_GETFILTERKEYS 50
#define SPI_SETFILTERKEYS 51
#define SPI_GETTOGGLEKEYS 52
#define SPI_SETTOGGLEKEYS 53
#define SPI_GETMOUSEKEYS 54
#define SPI_SETMOUSEKEYS 55
#define SPI_GETSHOWSOUNDS 56
#define SPI_SETSHOWSOUNDS 57
#define SPI_GETSTICKYKEYS 58
#define SPI_SETSTICKYKEYS 59
#define SPI_GETACCESSTIMEOUT 60
#define SPI_SETACCESSTIMEOUT 61
#if(WINVER >= 0x0400)
#define SPI_GETSERIALKEYS 62
#define SPI_SETSERIALKEYS 63
#endif /* WINVER >= 0x0400 */
#define SPI_GETSOUNDSENTRY 64
#define SPI_SETSOUNDSENTRY 65
#if(_WIN32_WINNT >= 0x0400)
#define SPI_GETSNAPTODEFBUTTON 95
#define SPI_SETSNAPTODEFBUTTON 96
#endif /* _WIN32_WINNT >= 0x0400 */
#if (_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400)
#define SPI_GETMOUSEHOVERWIDTH 98
#define SPI_SETMOUSEHOVERWIDTH 99
#define SPI_GETMOUSEHOVERHEIGHT 100
#define SPI_SETMOUSEHOVERHEIGHT 101
#define SPI_GETMOUSEHOVERTIME 102
#define SPI_SETMOUSEHOVERTIME 103
#define SPI_GETWHEELSCROLLLINES 104
#define SPI_SETWHEELSCROLLLINES 105
#define SPI_GETMENUSHOWDELAY 106
#define SPI_SETMENUSHOWDELAY 107
#define SPI_GETSHOWIMEUI 110
#define SPI_SETSHOWIMEUI 111
#endif
#if(WINVER >= 0x0500)
#define SPI_GETMOUSESPEED 112
#define SPI_SETMOUSESPEED 113
#define SPI_GETSCREENSAVERRUNNING 114
#define SPI_GETDESKWALLPAPER 115
#endif /* WINVER >= 0x0500 */
#if(WINVER >= 0x0500)
#define SPI_GETACTIVEWINDOWTRACKIN
#define SPI_SETACTIVEWINDOWTRACKIN
#define SPI_GETMENUANIMATION 0x1002
#define SPI_SETMENUANIMATION 0x1003
#define SPI_GETCOMBOBOXANIMATION 0x1004
#define SPI_SETCOMBOBOXANIMATION 0x1005
#define SPI_GETLISTBOXSMOOTHSCROLL
#define SPI_SETLISTBOXSMOOTHSCROLL
#define SPI_GETGRADIENTCAPTIONS 0x1008
#define SPI_SETGRADIENTCAPTIONS 0x1009
#define SPI_GETKEYBOARDCUES 0x100A
#define SPI_SETKEYBOARDCUES 0x100B
#define SPI_GETMENUUNDERLINES SPI_GETKEYBOARDCUES
#define SPI_SETMENUUNDERLINES SPI_SETKEYBOARDCUES
#define SPI_GETACTIVEWNDTRKZORDER 0x100C
#define SPI_SETACTIVEWNDTRKZORDER 0x100D
#define SPI_GETHOTTRACKING 0x100E
#define SPI_SETHOTTRACKING 0x100F
#define SPI_GETMENUFADE 0x1012
#define SPI_SETMENUFADE 0x1013
#define SPI_GETSELECTIONFADE 0x1014
#define SPI_SETSELECTIONFADE 0x1015
#define SPI_GETTOOLTIPANIMATION 0x1016
#define SPI_SETTOOLTIPANIMATION 0x1017
#define SPI_GETTOOLTIPFADE 0x1018
#define SPI_SETTOOLTIPFADE 0x1019
#define SPI_GETCURSORSHADOW 0x101A
#define SPI_SETCURSORSHADOW 0x101B
#define SPI_GETUIEFFECTS 0x103E
#define SPI_SETUIEFFECTS 0x103F
#define SPI_GETFOREGROUNDLOCKTIMEO
#define SPI_SETFOREGROUNDLOCKTIMEO
#define SPI_GETACTIVEWNDTRKTIMEOUT
#define SPI_SETACTIVEWNDTRKTIMEOUT
#define SPI_GETFOREGROUNDFLASHCOUN
#define SPI_SETFOREGROUNDFLASHCOUN
#define SPI_GETCARETWIDTH 0x2006
#define SPI_SETCARETWIDTH 0x2007
#endif /* WINVER >= 0x0500 */
hth
l8knight
/*
* Parameter for SystemParametersInfo()
*/
#define SPI_GETBEEP 1
#define SPI_SETBEEP 2
#define SPI_GETMOUSE 3
#define SPI_SETMOUSE 4
#define SPI_GETBORDER 5
#define SPI_SETBORDER 6
#define SPI_GETKEYBOARDSPEED 10
#define SPI_SETKEYBOARDSPEED 11
#define SPI_LANGDRIVER 12
#define SPI_ICONHORIZONTALSPACING 13
#define SPI_GETSCREENSAVETIMEOUT 14
#define SPI_SETSCREENSAVETIMEOUT 15
#define SPI_GETSCREENSAVEACTIVE 16
#define SPI_SETSCREENSAVEACTIVE 17
#define SPI_GETGRIDGRANULARITY 18
#define SPI_SETGRIDGRANULARITY 19
#define SPI_SETDESKWALLPAPER 20
#define SPI_SETDESKPATTERN 21
#define SPI_GETKEYBOARDDELAY 22
#define SPI_SETKEYBOARDDELAY 23
#define SPI_ICONVERTICALSPACING 24
#define SPI_GETICONTITLEWRAP 25
#define SPI_SETICONTITLEWRAP 26
#define SPI_GETMENUDROPALIGNMENT 27
#define SPI_SETMENUDROPALIGNMENT 28
#define SPI_SETDOUBLECLKWIDTH 29
#define SPI_SETDOUBLECLKHEIGHT 30
#define SPI_GETICONTITLELOGFONT 31
#define SPI_SETDOUBLECLICKTIME 32
#define SPI_SETMOUSEBUTTONSWAP 33
#define SPI_SETICONTITLELOGFONT 34
#define SPI_GETFASTTASKSWITCH 35
#define SPI_SETFASTTASKSWITCH 36
#if(WINVER >= 0x0400)
#define SPI_SETDRAGFULLWINDOWS 37
#define SPI_GETDRAGFULLWINDOWS 38
#define SPI_GETNONCLIENTMETRICS 41
#define SPI_SETNONCLIENTMETRICS 42
#define SPI_GETMINIMIZEDMETRICS 43
#define SPI_SETMINIMIZEDMETRICS 44
#define SPI_GETICONMETRICS 45
#define SPI_SETICONMETRICS 46
#define SPI_SETWORKAREA 47
#define SPI_GETWORKAREA 48
#define SPI_SETPENWINDOWS 49
#define SPI_GETHIGHCONTRAST 66
#define SPI_SETHIGHCONTRAST 67
#define SPI_GETKEYBOARDPREF 68
#define SPI_SETKEYBOARDPREF 69
#define SPI_GETSCREENREADER 70
#define SPI_SETSCREENREADER 71
#define SPI_GETANIMATION 72
#define SPI_SETANIMATION 73
#define SPI_GETFONTSMOOTHING 74
#define SPI_SETFONTSMOOTHING 75
#define SPI_SETDRAGWIDTH 76
#define SPI_SETDRAGHEIGHT 77
#define SPI_SETHANDHELD 78
#define SPI_GETLOWPOWERTIMEOUT 79
#define SPI_GETPOWEROFFTIMEOUT 80
#define SPI_SETLOWPOWERTIMEOUT 81
#define SPI_SETPOWEROFFTIMEOUT 82
#define SPI_GETLOWPOWERACTIVE 83
#define SPI_GETPOWEROFFACTIVE 84
#define SPI_SETLOWPOWERACTIVE 85
#define SPI_SETPOWEROFFACTIVE 86
#define SPI_SETCURSORS 87
#define SPI_SETICONS 88
#define SPI_GETDEFAULTINPUTLANG 89
#define SPI_SETDEFAULTINPUTLANG 90
#define SPI_SETLANGTOGGLE 91
#define SPI_GETWINDOWSEXTENSION 92
#define SPI_SETMOUSETRAILS 93
#define SPI_GETMOUSETRAILS 94
#define SPI_SETSCREENSAVERRUNNING 97
#define SPI_SCREENSAVERRUNNING SPI_SETSCREENSAVERRUNNING
#endif /* WINVER >= 0x0400 */
#define SPI_GETFILTERKEYS 50
#define SPI_SETFILTERKEYS 51
#define SPI_GETTOGGLEKEYS 52
#define SPI_SETTOGGLEKEYS 53
#define SPI_GETMOUSEKEYS 54
#define SPI_SETMOUSEKEYS 55
#define SPI_GETSHOWSOUNDS 56
#define SPI_SETSHOWSOUNDS 57
#define SPI_GETSTICKYKEYS 58
#define SPI_SETSTICKYKEYS 59
#define SPI_GETACCESSTIMEOUT 60
#define SPI_SETACCESSTIMEOUT 61
#if(WINVER >= 0x0400)
#define SPI_GETSERIALKEYS 62
#define SPI_SETSERIALKEYS 63
#endif /* WINVER >= 0x0400 */
#define SPI_GETSOUNDSENTRY 64
#define SPI_SETSOUNDSENTRY 65
#if(_WIN32_WINNT >= 0x0400)
#define SPI_GETSNAPTODEFBUTTON 95
#define SPI_SETSNAPTODEFBUTTON 96
#endif /* _WIN32_WINNT >= 0x0400 */
#if (_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400)
#define SPI_GETMOUSEHOVERWIDTH 98
#define SPI_SETMOUSEHOVERWIDTH 99
#define SPI_GETMOUSEHOVERHEIGHT 100
#define SPI_SETMOUSEHOVERHEIGHT 101
#define SPI_GETMOUSEHOVERTIME 102
#define SPI_SETMOUSEHOVERTIME 103
#define SPI_GETWHEELSCROLLLINES 104
#define SPI_SETWHEELSCROLLLINES 105
#define SPI_GETMENUSHOWDELAY 106
#define SPI_SETMENUSHOWDELAY 107
#define SPI_GETSHOWIMEUI 110
#define SPI_SETSHOWIMEUI 111
#endif
#if(WINVER >= 0x0500)
#define SPI_GETMOUSESPEED 112
#define SPI_SETMOUSESPEED 113
#define SPI_GETSCREENSAVERRUNNING 114
#define SPI_GETDESKWALLPAPER 115
#endif /* WINVER >= 0x0500 */
#if(WINVER >= 0x0500)
#define SPI_GETACTIVEWINDOWTRACKIN
#define SPI_SETACTIVEWINDOWTRACKIN
#define SPI_GETMENUANIMATION 0x1002
#define SPI_SETMENUANIMATION 0x1003
#define SPI_GETCOMBOBOXANIMATION 0x1004
#define SPI_SETCOMBOBOXANIMATION 0x1005
#define SPI_GETLISTBOXSMOOTHSCROLL
#define SPI_SETLISTBOXSMOOTHSCROLL
#define SPI_GETGRADIENTCAPTIONS 0x1008
#define SPI_SETGRADIENTCAPTIONS 0x1009
#define SPI_GETKEYBOARDCUES 0x100A
#define SPI_SETKEYBOARDCUES 0x100B
#define SPI_GETMENUUNDERLINES SPI_GETKEYBOARDCUES
#define SPI_SETMENUUNDERLINES SPI_SETKEYBOARDCUES
#define SPI_GETACTIVEWNDTRKZORDER 0x100C
#define SPI_SETACTIVEWNDTRKZORDER 0x100D
#define SPI_GETHOTTRACKING 0x100E
#define SPI_SETHOTTRACKING 0x100F
#define SPI_GETMENUFADE 0x1012
#define SPI_SETMENUFADE 0x1013
#define SPI_GETSELECTIONFADE 0x1014
#define SPI_SETSELECTIONFADE 0x1015
#define SPI_GETTOOLTIPANIMATION 0x1016
#define SPI_SETTOOLTIPANIMATION 0x1017
#define SPI_GETTOOLTIPFADE 0x1018
#define SPI_SETTOOLTIPFADE 0x1019
#define SPI_GETCURSORSHADOW 0x101A
#define SPI_SETCURSORSHADOW 0x101B
#define SPI_GETUIEFFECTS 0x103E
#define SPI_SETUIEFFECTS 0x103F
#define SPI_GETFOREGROUNDLOCKTIMEO
#define SPI_SETFOREGROUNDLOCKTIMEO
#define SPI_GETACTIVEWNDTRKTIMEOUT
#define SPI_SETACTIVEWNDTRKTIMEOUT
#define SPI_GETFOREGROUNDFLASHCOUN
#define SPI_SETFOREGROUNDFLASHCOUN
#define SPI_GETCARETWIDTH 0x2006
#define SPI_SETCARETWIDTH 0x2007
#endif /* WINVER >= 0x0500 */
hth
l8knight
The SystemParametersInfo function queries or sets systemwide parameters. This function can also update the user profile while setting a parameter.
BOOL SystemParametersInfo(
UINT uiAction, // system parameter to query or set
UINT uiParam, // depends on action to be taken
PVOID pvParam, // depends on action to be taken
UINT fWinIni // user profile update flag
);
Parameters
uiAction
Specifies the systemwide parameter to query or set. This parameter can be one of the following values:
Value Meaning
SPI_GETACCESSTIMEOUT Retrieves information about the time-out period associated with the accessibility features. The pvParam parameter must point to an ACCESSTIMEOUT structure that receives the information. Set the cbSize member of this structure and the uiParam parameter to sizeof(ACCESSTIMEOUT).
SPI_GETANIMATION Retrieves the animation effects associated with user actions. The pvParam parameter must point to an ANIMATIONINFO structure that receives the information. Set the cbSize member of this structure and the uiParam parameter to sizeof(ANIMATIONINFO).
SPI_GETBEEP Indicates whether the warning beeper is on.The pvParam parameter is a pointer to a BOOL that receives TRUE if the beeper is on, or FALSE if it is off.
SPI_GETBORDER Retrieves the border multiplier factor that determines the width of a window's sizing border. The pvParam parameter must point to an integer variable.
SPI_GETDEFAULTINPUTLANG Returns the keyboard layout handle for the system default input language. The pvParam parameter must point to the 32-bit variable that receives the keyboard layout handle for the default language. The uiParam parameter is not used.
SPI_GETDRAGFULLWINDOWS Determines whether dragging of full windows is enabled. The pvParam parameter must point to a BOOL variable that receives TRUE if enabled, or FALSE otherwise. Windows 95: This flag is supported only if Windows Plus! is installed. See SPI_GETWINDOWSEXTENSION.
SPI_GETFASTTASKSWITCH This flag is obsolete. Previous versions of Windows use this flag to determine whether ALT+TAB fast task switching is enabled. Beginning with Windows 95 and Windows NT version 4.0, fast task switching is always enabled.
SPI_GETFILTERKEYS Retrieves information about the FilterKeys accessibility feature. The pvParam parameter must point to a FILTERKEYS structure that receives the information. Set the cbSize member of this structure and the uiParam parameter to sizeof(FILTERKEYS).
SPI_GETFONTSMOOTHING Indicates whether the font smoothing feature is enabled. This feature uses font anti-aliasing to make font curves appear smoother by painting pixels at different gray levels. The pvParam parameter is a pointer to a BOOL variable that receives TRUE if the feature is enabled, or FALSE if it is not.Windows 95: This flag is supported only if Windows Plus! is installed. See SPI_GETWINDOWSEXTENSION.
SPI_GETGRIDGRANULARITY Retrieves the current granularity value of the desktop sizing grid. The pvParam parameter must point to an integer variable that receives the granularity.
SPI_GETHIGHCONTRAST Windows 95 only: Retrieves information about the HighContrast accessibility feature. The pvParam parameter must point to a HIGHCONTRAST structure that receives the information. Set the cbSize member of this structure and the uiParam parameter to sizeof(HIGHCONTRAST).
SPI_GETICONMETRICS Retrieves the metrics associated with icons. The pvParam parameter must point to an ICONMETRICS structure that receives the information. Set the cbSize member of this structure and the uiParam parameter to sizeof(ICONMETRICS).
SPI_GETICONTITLELOGFONT Retrieves the logical font information for the current icon-title font. The uiParam parameter specifies the size of a LOGFONT structure, and the pvParam parameter must point to the LOGFONT structure to fill in.
SPI_GETICONTITLEWRAP Determines whether icon-title wrapping is enabled. The pvParam parameter must point to a BOOL variable that receives TRUE if enabled, or FALSE otherwise.
SPI_GETKEYBOARDDELAY Retrieves the keyboard repeat-delay setting. The pvParam parameter must point to an integer variable that receives the setting.
SPI_GETKEYBOARDPREF Determines whether the user relies on the keyboard instead of the mouse, and wants applications to display keyboard interfaces that would otherwise be hidden. The pvParam parameter must point to a BOOL variable that receives TRUE if the user relies on the keyboard; the variable receives FALSE otherwise.
SPI_GETKEYBOARDSPEED Retrieves the keyboard repeat-speed setting. The pvParam parameter must point to a DWORD variable that receives the setting.
SPI_GETLOWPOWERACTIVE This flag is not supported for 32-bit applications on Windows NT or Windows 95.Windows 95 only: For 16-bit Windows applications, this value determines whether the low-power phase of screen saving is enabled or not. The pvParam parameter must point to a BOOL variable that receives TRUE if enabled, or FALSE if disabled.
SPI_GETLOWPOWERTIMEOUT This flag is not supported for 32-bit applications on Windows NT or Windows 95.Windows 95 only: For 16-bit Windows applications, this value retrieves the time-out value for the low-power phase of screen saving. The pvParam parameter must point to an integer value that receives the value.
SPI_GETMENUDROPALIGNMENT Determines whether pop-up menus are left-aligned or right-aligned, relative to the corresponding menu-bar item. The pvParam parameter must point to a BOOL variable that receives TRUE if left-aligned, or FALSE otherwise.
SPI_GETMINIMIZEDMETRICS Retrieves the metrics associated with minimized windows. The pvParam parameter must point to a MINIMIZEDMETRICS structure that receives the information. Set the cbSize member of this structure and the uiParam parameter to sizeof(MINIMIZEDMETRICS).
SPI_GETMOUSE Retrieves the two mouse threshold values and the mouse speed. The pvParam parameter must point to an array of three integers that receives these values. See mouse_event for further information.
SPI_GETMOUSEHOVERHEIGHT Windows NT only: Gets the height, in pixels, of the rectangle within which the mouse pointer has to stay for TrackMouseEvent to generate a WM_MOUSEHOVER message. The height is returned in a UINT pointed to by the pvParam parameter.
SPI_GETMOUSEHOVERTIME Windows NT only: Gets the time, in milliseconds, that the mouse pointer has to stay in the hover rectangle for TrackMouseEvent to generate a WM_MOUSEHOVER message. The time is returned in a UINT pointed to by the pvParam parameter.
SPI_GETMOUSEHOVERWIDTH Windows NT only: Gets the width, in pixels, of the rectangle within which the mouse pointer has to stay for TrackMouseEvent to generate a WM_MOUSEHOVER message. The width is returned in a UINT pointed to by the pvParam parameter.
SPI_GETMOUSEKEYS Retrieves information about the MouseKeys accessibility feature. The pvParam parameter must point to a MOUSEKEYS structure that receives the information. Set the cbSize member of this structure and the uiParam parameter to sizeof(MOUSEKEYS).
SPI_GETMOUSETRAILS Windows 95 only: Indicates whether the Mouse Trails feature is enabled. This feature improves the visibility of mouse cursor movements by briefly showing a trail of cursors and quickly erasing them.The pvParam parameter is a pointer to an INT variable that receives a value. If the value is zero or 1, the feature is disabled. If the value is greater than 1, the feature is enabled and the value indicates the number of cursors drawn in the trail. The uiParam parameter is not used.
SPI_GETNONCLIENTMETRICS Retrieves the metrics associated with the nonclient area of nonminimized windows. The pvParam parameter must point to a NONCLIENTMETRICS structure that receives the information. Set the cbSize member of this structure and the uiParam parameter to sizeof(NONCLIENTMETRICS).
SPI_GETPOWEROFFACTIVE This flag is not supported for 32-bit applications on Windows NT or Windows 95.Windows 95 only: For 16-bit Windows applications, this value determines whether the power-off phase of screen saving is enabled or not. The pvParam parameter must point to a BOOL variable that receives TRUE if enabled, or FALSE if disabled.
SPI_GETPOWEROFFTIMEOUT This flag is not supported for 32-bit applications on Windows NT or Windows 95.Windows 95 only: For 16-bit Windows applications, this value retrieves the time-out value for the power-off phase of screen saving. The pvParam parameter must point to an integer value that receives the value.
SPI_GETSCREENREADER Windows 95 only: Determines whether a screen reviewer utility is running. A screen reviewer utility directs textual information to an output device, such as a speech synthesizer or Braille display. When this flag is set, an application should provide textual information in situations where it would otherwise present the information graphically. The pvParam parameter is a pointer to a BOOL variable that receives TRUE if a screen reviewer utility is running, or FALSE if it is not.
SPI_GETSCREENSAVEACTIVE Determines whether screen saving is enabled. The pvParam parameter must point to a BOOL variable that receives TRUE if enabled, or FALSE otherwise.
SPI_GETSCREENSAVETIMEOUT Retrieves the screen saver time-out value, in seconds. The pvParam parameter must point to an integer variable that receives the value.
SPI_GETSERIALKEYS Windows 95 only: Retrieves information about the SerialKeys accessibility feature. The pvParam parameter must point to a SERIALKEYS structure that receives the information. Set the cbSize member of this structure and the uiParam parameter to sizeof(SERIALKEYS).
SPI_GETSHOWSOUNDS Determines whether the Show Sounds accessibility flag is on or off. If it is on, the user requires an application to present information visually in situations where it would otherwise present the information only in audible form. The pvParam parameter must point to a BOOL variable that receives TRUE if the feature is on, or FALSE if it is off.Using this value is equivalent to calling GetSystemMetrics (SM_SHOWSOUNDS). That is the recommended call.
SPI_GETSNAPTODEFBUTTON Windows NT only: Determines whether the snap-to-default-button feature is enabled. If enabled, the mouse cursor automatically moves to the default button, such as "OK" or "Apply", of a dialog box. The pvParam parameter must point to a BOOL variable that receives TRUE if the feature is on, or FALSE if it is off.
SPI_GETSOUNDSENTRY Retrieves information about the SoundSentry accessibility feature. The pvParam parameter must point to a SOUNDSENTRY structure that receives the information. Set the cbSize member of this structure and the uiParam parameter to sizeof(SOUNDSENTRY).
SPI_GETSTICKYKEYS Retrieves information about the StickyKeys accessibility feature. The pvParam parameter must point to a STICKYKEYS structure that receives the information. Set the cbSize member of this structure and the uiParam parameter to sizeof(STICKYKEYS).
SPI_GETTOGGLEKEYS Retrieves information about the ToggleKeys accessibility feature. The pvParam parameter must point to a TOGGLEKEYS structure that receives the information. Set the cbSize member of this structure and the uiParam parameter to sizeof(TOGGLEKEYS).
SPI_GETWHEELSCROLLLINES Windows NT only: Gets the number of lines to scroll when the mouse wheel is rotated. The number of lines is returned in a UINT pointed to by pvParam. The default value is 3.
SPI_GETWINDOWSEXTENSION Windows 95 only: Indicates whether the Windows extension, Windows Plus!, is installed. Set the uiParam parameter to 1. The pvParam parameter is not used. The function returns TRUE if the extension is installed, or FALSE if it is not.
SPI_GETWORKAREA Retrieves the size of the working area. The working area is the portion of the screen not obscured by the tray. The pvParam parameter must point to the RECT structure that receives the coordinates of the working area.
SPI_ICONHORIZONTALSPACING Sets the width of an icon cell. The uiParam parameter specifies the width, in pixels.
SPI_ICONVERTICALSPACING Sets the height of an icon cell. The uiParam parameter specifies the height, in pixels.
SPI_LANGDRIVER Not implemented.
SPI_SCREENSAVERRUNNING Windows 95 only: Used internally; applications should not use this flag.
SPI_SETACCESSTIMEOUT Sets the time-out period associated with the accessibility features. The pvParam parameter must point to an ACCESSTIMEOUT structure that contains the new parameters. Set the cbSize member of this structure and the uiParam parameter to sizeof(ACCESSTIMEOUT).
SPI_SETANIMATION Sets the animation effects associated with user actions. The pvParam parameter must point to an ANIMATIONINFO structure that contains the new parameters. Set the cbSize member of this structure and the uiParam parameter to sizeof(ANIMATIONINFO).
SPI_SETBEEP Turns the warning beeper on or off. The uiParam parameter specifies TRUE for on, or FALSE for off.
SPI_SETBORDER Sets the border multiplier factor that determines the width of a window's sizing border. The uiParam parameter specifies the new value.
SPI_SETDEFAULTINPUTLANG Sets the default input language for the system shell and applications. The specified language must be displayable using the current system character set. The uiParam parameter is not used. The pvParam parameter must point to a 32-bit variable that contains the keyboard layout handle for the default language.
SPI_SETDESKPATTERN Sets the current desktop pattern by causing Windows to read the Pattern= setting from the WIN.INI file.
SPI_SETDESKWALLPAPER Sets the desktop wallpaper. The pvParam parameter must point to a null-terminated string containing the name of a bitmap file.
SPI_SETDOUBLECLICKTIME Sets the double-click time for the mouse to the value of the uiParam parameter. The double-click time is the maximum number of milliseconds that can occur between the first and second clicks of a double-click.
SPI_SETDOUBLECLKHEIGHT Sets the height of the double-click rectangle to the value of the uiParam parameter.The double-click rectangle is the rectangle within which the second click of a double-click must fall for it to be registered as a double-click.
SPI_SETDOUBLECLKWIDTH Sets the width of the double-click rectangle to the value of the uiParam parameter.The double-click rectangle is the rectangle within which the second click of a double-click must fall for it to be registered as a double-click.
SPI_SETDRAGFULLWINDOWS Sets dragging of full windows either on or off. The uiParam parameter specifies TRUE for on, or FALSE for off.Windows 95: This flag is supported only if Windows Plus! is installed. See SPI_GETWINDOWSEXTENSION.
SPI_SETDRAGHEIGHT Sets the height, in pixels, of the rectangle used to detect the start of a drag operation. See SM_CXDRAG and SM_CYDRAG in the table under the nIndex parameter of GetSystemMetrics.
SPI_SETDRAGWIDTH Sets the width, in pixels, of the rectangle used to detect the start of a drag operation.See SM_CXDRAG and SM_CYDRAG in the table under the nIndex parameter of GetSystemMetrics.
SPI_SETFASTTASKSWITCH This flag is obsolete. Previous versions of Windows use this flag to enable or disable ALT+TAB fast task switching. Beginning with Windows 95 and Windows NT version 4.0, fast task switching is always enabled.
SPI_SETFILTERKEYS Sets the parameters of the FilterKeys accessibility feature. The pvParam parameter must point to a FILTERKEYS structure that contains the new parameters. Set the cbSize member of this structure and the uiParam parameter to sizeof(FILTERKEYS).
SPI_SETFONTSMOOTHING Enables or disables the font smoothing feature, which uses font anti-aliasing to make font curves appear smoother by painting pixels at different gray levels. To enable the feature, set the uiParam parameter to TRUE. To disable the feature, set uiParam to FALSE. Windows 95: This flag is supported only if Windows Plus! is installed. See SPI_GETWINDOWSEXTENSION.
SPI_SETGRIDGRANULARITY Sets the granularity of the desktop sizing grid to the value of the uiParam parameter.
SPI_SETHANDHELD Used internally; applications should not use this value.
SPI_SETHIGHCONTRAST Windows 95 only: Sets the parameters of the HighContrast accessibility feature. The pvParam parameter must point to a HIGHCONTRAST structure that contains the new parameters. Set the cbSize member of this structure and the uiParam parameter to sizeof(HIGHCONTRAST).
SPI_SETICONMETRICS Sets the metrics associated with icons. The pvParam parameter must point to an ICONMETRICS structure that contains the new parameters. Set the cbSize member of this structure and the uiParam parameter to sizeof(ICONMETRICS).
SPI_SETICONTITLELOGFONT Sets the font that is used for icon titles. The uiParam parameter specifies the size of a LOGFONT structure, and the pvParam parameter must point to a LOGFONT structure.
SPI_SETICONTITLEWRAP Turns icon-title wrapping on or off. The uiParam parameter specifies TRUE for on, or FALSE for off.
SPI_SETKEYBOARDDELAY Sets the keyboard repeat-delay setting to the value of the uiParam parameter.
SPI_SETKEYBOARDPREF Windows 95 only: Sets the keyboard preference. The uiParam parameter specifies TRUE if the user relies on the keyboard instead of the mouse, and wants applications to display keyboard interfaces that would otherwise be hidden; uiParam is FALSE otherwise.
SPI_SETKEYBOARDSPEED Sets the keyboard repeat-speed setting to the value of the uiParam parameter.
SPI_SETLANGTOGGLE Sets the hot key set for switching between input languages. The uiParam and pvParam parameters are not used. The value sets the shortcut keys in the keyboard property sheets by reading the registry again. The registry must be set before this flag is used. the path in the registry is \HKEY_CURRENT_USER\keyboar
SPI_SETLOWPOWERACTIVE Windows 95 only: Activates or deactivates the low-power phase of screen saving. Set uiParam to 1 to activate, or 0 to deactivate. The pvParam parameter must be NULL.
SPI_SETLOWPOWERTIMEOUT Windows 95 only: Retrieves the time-out value, in seconds, for the low-power phase of screen saving. The uiParam parameter specifies the new value. The pvParam parameter must be NULL.
SPI_SETMENUDROPALIGNMENT Sets the alignment value of pop-up menus. The uiParam parameter specifies TRUE for right alignment, or FALSE for left alignment.
SPI_SETMINIMIZEDMETRICS Sets the metrics associated with minimized windows. The pvParam parameter must point to a MINIMIZEDMETRICS structure that contains the new parameters. Set the cbSize member of this structure and the uiParam parameter to sizeof(MINIMIZEDMETRICS).
SPI_SETMOUSE Sets the two mouse threshold values and the mouse speed. The pvParam parameter must point to an array of three integers that specifies these values. See mouse_event for further information.
SPI_SETMOUSEBUTTONSWAP 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 to restore their original meanings.
SPI_SETMOUSEHOVERHEIGHT Windows NT only: Sets the height, in pixels, of the rectangle within which the mouse pointer has to stay for TrackMouseEvent to generate a WM_MOUSEHOVER message. The height is set from the uiParam parameter.
SPI_SETMOUSEHOVERTIME Windows NT only: Sets the time, in milliseconds, that the mouse pointer has to stay in the hover rectangle for TrackMouseEvent to generate a WM_MOUSEHOVER message. This is used only if you pass HOVER_DEFAULT in the dwHoverTime parameter in the call to TrackMouseEvent. The time is set from the uiParam parameter.
SPI_SETMOUSEHOVERWIDTH Windows NT only: Sets the width, in pixels, of the rectangle within which the mouse pointer has to stay for TrackMouseEvent to generate a WM_MOUSEHOVER message. The width is set from the uiParam parameter.
SPI_SETMOUSEKEYS Sets the parameters of the MouseKeys accessibility feature. The pvParam parameter must point to a MOUSEKEYS structure that contains the new parameters. Set the cbSize member of this structure and the uiParam parameter to sizeof(MOUSEKEYS).
SPI_SETMOUSETRAILS Windows 95 only: Enables or disables the Mouse Trails feature, which improves the visibility of mouse cursor movements by briefly showing a trail of cursors and quickly erasing them.To disable the feature, set the uiParam parameter to zero or 1. To enable the feature, set uiParam to a value greater than 1 to indicate the number of cursors drawn in the trail.
SPI_SETNONCLIENTMETRICS Sets the metrics associated with the nonclient area of nonminimized windows. The pvParam parameter must point to a NONCLIENTMETRICS structure that contains the new parameters. Set the cbSize member of this structure and the uiParam parameter to sizeof(NONCLIENTMETRICS).
SPI_SETPENWINDOWS Windows 95 only: Specifies that pen windows is being loaded or unloaded. The uiParam parameter is TRUE when loading and FALSE when unloading pen windows. The pvParam parameter is NULL.
SPI_SETPOWEROFFACTIVE Windows 95 only: Activates or deactivates the power-off phase of screen saving. Set uiParam to 1 to activate, or 0 to deactivate. The pvParam parameter must be NULL.
SPI_SETPOWEROFFTIMEOUT Windows 95 only: Retrieves the time-out value, in seconds, for the power-off phase of screen saving. The uiParam parameter specifies the new value. The pvParam parameter must be NULL.
SPI_SETSCREENREADER Windows 95 only: Indicates whether a screen review utility is running. The uiParam parameter specifies TRUE for on, or FALSE for off.
SPI_SETSCREENSAVEACTIVE Sets the state of the screen saver. The uiParam parameter specifies TRUE to activate screen saving, or FALSE to deactivate it.
SPI_SETSCREENSAVETIMEOUT Sets the screen saver time-out value to the value of the uiParam parameter. This value is the amount of time, in seconds, that the system must be idle before the screen saver activates.
SPI_SETSERIALKEYS Windows 95 only: Sets the parameters of the SerialKeys accessibility feature. The pvParam parameter must point to a SERIALKEYS structure that contains the new parameters. Set the cbSize member of this structure and the uiParam parameter to sizeof(SERIALKEYS).
SPI_SETSHOWSOUNDS Sets the ShowSounds accessibility feature as on or off. The uiParam parameter specifies TRUE for on, or FALSE for off.
SPI_SETSNAPTODEFBUTTON Windows NT only: Enables or disables the snap-to-default-button feature. If enabled, the mouse cursor automatically moves to the default button, such as "OK" or "Apply", of a dialog box. Set the uiParam parameter to TRUE to enable the feature, or FALSE to disable it.
SPI_SETSOUNDSENTRY Sets the parameters of the SoundSentry accessibility feature. The pvParam parameter must point to a SOUNDSENTRY structure that contains the new parameters. Set the cbSize member of this structure and the uiParam parameter to sizeof(SOUNDSENTRY).
SPI_SETSTICKYKEYS Sets the parameters of the StickyKeys accessibility feature. The pvParam parameter must point to a STICKYKEYS structure that contains the new parameters. Set the cbSize member of this structure and the uiParam parameter to sizeof(STICKYKEYS).
SPI_SETTOGGLEKEYS Sets the parameters of the ToggleKeys accessibility feature. The pvParam parameter must point to a TOGGLEKEYS structure that contains the new parameters. Set the cbSize member of this structure and the uiParam parameter to sizeof(TOGGLEKEYS).
SPI_SETWHEELSCROLLLINES Windows NT only: Sets the number of lines to scroll when the mouse wheel is rotated. The number of lines is set from the uiParam parameter.The number of lines is the suggested number of lines to scroll when the mouse wheel is rolled without using modifier keys. If the number is 0, then no scrolling should occur. If the number of lines to scroll is greater than the number of lines viewable, and in particular if it is WHEEL_PAGESCROLL (#defined as UINT_MAX), the scroll operation should be interpreted as clicking once in the page down or page up regions of the scroll bar.
SPI_SETWORKAREA Sets the size of the work area. The work area is the portion of the screen not obscured by the taskbar. The pvParam parameter must point to the RECT structure that contains the coordinates of the work area.
uiParam
Depends on the system parameter being queried or set. For more information about systemwide parameters, see the uiAction parameter. If not otherwise indicated, specify zero.
pvParam
Depends on the system parameter being queried or set. For more information about systemwide parameters, see the uiAction parameter. If not otherwise indicated, specify NULL.
fWinIni
If a system parameter is being set, specifies whether the user profile is to be updated, and if so, whether the WM_SETTINGCHANGE message is to be broadcast to all top-level windows to notify them of the change. This parameter can be zero or can be one of the following values:
Value Action
SPIF_UPDATEINIFILE Writes the new system-wide parameter setting to the user profile.
SPIF_SENDCHANGE Broadcasts the WM_SETTINGCHANGE message after updating the user profile.
SPIF_SENDWININICHANGE Same as SPIF_SENDCHANGE.
Return Values
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError.
Remarks
This function is intended for use with applications, such as the Control Panel, that allow the user to customize the Windows environment.
A keyboard layout name should be derived from the hexadecimal value of the language identifier corresponding to the layout. For example, U.S. English has a language identifier of 0x0409, so the primary U.S. English layout is named "00000409." Variants of U.S. English layout, such as the Dvorak layout, are named "00010409," "00020409" and so on. For a list of the primary language identifiers and sublanguage identifiers that make up a language identifier, see the MAKELANGID macro.
See Also
ACCESSTIMEOUT, ANIMATIONINFO, FILTERKEYS, GetLastError, GetSystemMetrics, HIGHCONTRAST, ICONMETRICS
, LOGFONT, MAKELANGID, MINIMIZEDMETRICS, mouse_event, MOUSEKEYS, NONCLIENTMETRICS, RECT, SERIALKEYS, SOUNDSENTRY, STICKYKEYS, TOGGLEKEYS, TrackMouseEvent WM_SETTINGCHANGE
GL
Mike
ps, for those who read this far & were offended by my earlier comment, well, you might consider _buying_ your copy. Wowza, there's a concept eh.