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Delphi 調用 WinAPI：SystemParametersInfo 參數大全與桌面壁紙範例

編輯：Delphi

系統參數資訊的瑞士刀

SystemParametersInfo 是存取與設定 Windows 系統級參數的萬用鑰匙，從滑鼠速度、鍵盤延遲、桌面壁紙、螢幕保護程式、無障礙選項、UI 動畫效果，到電源管理、輸入法、多螢幕設定，超過 100 個常數涵蓋面極廣。本文提供完整常數對照表，並以「更換桌面壁紙」為實戰範例。

更換桌面壁紙範例

var
  BmpPath: PChar;
begin
  BmpPath := 'C:\Temp\Test.bmp';
  SystemParametersInfo(SPI_SETDESKWALLPAPER, 0, BmpPath, SPIF_UPDATEINIFILE);
end;

SPI_SETDESKWALLPAPER (20)：設定壁紙
SPIF_UPDATEINIFILE (1)：寫入使用者設定檔，使變更永久生效

常用 SPI_ 常數分類速查

點擊展開完整常數表（含十六進制與十進制）

SPI_GETBEEP = 1;
SPI_SETBEEP = 2;
SPI_GETMOUSE = 3;
SPI_SETMOUSE = 4;
SPI_GETBORDER = 5;
SPI_SETBORDER = 6;
SPI_GETKEYBOARDSPEED = 10;
SPI_SETKEYBOARDSPEED = 11;
SPI_LANGDRIVER = 12;
SPI_ICONHORIZONTALSPACING = 13;
SPI_GETSCREENSAVETIMEOUT = 14;
SPI_SETSCREENSAVETIMEOUT = 15;
SPI_GETSCREENSAVEACTIVE = $10;
SPI_SETSCREENSAVEACTIVE = 17;
SPI_GETGRIDGRANULARITY = 18;
SPI_SETGRIDGRANULARITY = 19;
SPI_SETDESKWALLPAPER = 20;
SPI_SETDESKPATTERN = 21;
SPI_GETKEYBOARDDELAY = 22;
SPI_SETKEYBOARDDELAY = 23;
SPI_ICONVERTICALSPACING = 24;
SPI_GETICONTITLEWRAP = 25;
SPI_SETICONTITLEWRAP = 26;
SPI_GETMENUDROPALIGNMENT = 27;
SPI_SETMENUDROPALIGNMENT = 28;
SPI_SETDOUBLECLKWIDTH = 29;
SPI_SETDOUBLECLKHEIGHT = 30;
SPI_GETICONTITLELOGFONT = 31;
SPI_SETDOUBLECLICKTIME = $20;
SPI_SETMOUSEBUTTONSWAP = 33;
SPI_SETICONTITLELOGFONT = 34;
SPI_GETFASTTASKSWITCH = 35;
SPI_SETFASTTASKSWITCH = 36;
SPI_SETDRAGFULLWINDOWS = 37;
SPI_GETDRAGFULLWINDOWS = 38;
SPI_GETNONCLIENTMETRICS = 41;
SPI_SETNONCLIENTMETRICS = 42;
SPI_GETMINIMIZEDMETRICS = 43;
SPI_SETMINIMIZEDMETRICS = 44;
SPI_GETICONMETRICS = 45;
SPI_SETICONMETRICS = 46;
SPI_SETWORKAREA = 47;
SPI_GETWORKAREA = 48;
SPI_SETPENWINDOWS = 49;
SPI_GETHIGHCONTRAST = 66;
SPI_SETHIGHCONTRAST = 67;
SPI_GETKEYBOARDPREF = 68;
SPI_SETKEYBOARDPREF = 69;
SPI_GETSCREENREADER = 70;
SPI_SETSCREENREADER = 71;
SPI_GETANIMATION = 72;
SPI_SETANIMATION = 73;
SPI_GETFONTSMOOTHING = 74;
SPI_SETFONTSMOOTHING = 75;
SPI_SETDRAGWIDTH = 76;
SPI_SETDRAGHEIGHT = 77;
SPI_SETHANDHELD = 78;
SPI_GETLOWPOWERTIMEOUT = 79;
SPI_GETPOWEROFFTIMEOUT = 80;
SPI_SETLOWPOWERTIMEOUT = 81;
SPI_SETPOWEROFFTIMEOUT = 82;
SPI_GETLOWPOWERACTIVE = 83;
SPI_GETPOWEROFFACTIVE = 84;
SPI_SETLOWPOWERACTIVE = 85;
SPI_SETPOWEROFFACTIVE = 86;
SPI_SETCURSORS = 87;
SPI_SETICONS = 88;
SPI_GETDEFAULTINPUTLANG = 89;
SPI_SETDEFAULTINPUTLANG = 90;
SPI_SETLANGTOGGLE = 91;
SPI_GETWINDOWSEXTENSION = 92;
SPI_SETMOUSETRAILS = 93;
SPI_GETMOUSETRAILS = 94;
SPI_SCREENSAVERRUNNING = 97;
SPI_GETFILTERKEYS = 50;
SPI_SETFILTERKEYS = 51;
SPI_GETTOGGLEKEYS = 52;
SPI_SETTOGGLEKEYS = 53;
SPI_GETMOUSEKEYS = 54;
SPI_SETMOUSEKEYS = 55;
SPI_GETSHOWSOUNDS = 56;
SPI_SETSHOWSOUNDS = 57;
SPI_GETSTICKYKEYS = 58;
SPI_SETSTICKYKEYS = 59;
SPI_GETACCESSTIMEOUT = 60;
SPI_SETACCESSTIMEOUT = 61;
SPI_GETSERIALKEYS = 62;
SPI_SETSERIALKEYS = 63;
SPI_GETSOUNDSENTRY = 64;
SPI_SETSOUNDSENTRY = 65;
SPI_GETSNAPTODEFBUTTON = 95;
SPI_SETSNAPTODEFBUTTON = 96;
SPI_GETMOUSEHOVERWIDTH = 98;
SPI_SETMOUSEHOVERWIDTH = 99;
SPI_GETMOUSEHOVERHEIGHT = 100;
SPI_SETMOUSEHOVERHEIGHT = 101;
SPI_GETMOUSEHOVERTIME = 102;
SPI_SETMOUSEHOVERTIME = 103;
SPI_GETWHEELSCROLLLINES = 104;
SPI_SETWHEELSCROLLLINES = 105;
SPI_GETMENUSHOWDELAY = 106;
SPI_SETMENUSHOWDELAY = 107;
SPI_GETSHOWIMEUI = 110;
SPI_SETSHOWIMEUI = 111;
SPI_GETMOUSESPEED = 112;
SPI_SETMOUSESPEED = 113;
SPI_GETSCREENSAVERRUNNING = 114;
SPI_GETACTIVEWINDOWTRACKING = $1000;
SPI_SETACTIVEWINDOWTRACKING = $1001;
SPI_GETMENUANIMATION = $1002;
SPI_SETMENUANIMATION = $1003;
SPI_GETCOMBOBOXANIMATION = $1004;
SPI_SETCOMBOBOXANIMATION = $1005;
SPI_GETLISTBOXSMOOTHSCROLLING = $1006;
SPI_SETLISTBOXSMOOTHSCROLLING = $1007;
SPI_GETGRADIENTCAPTIONS = $1008;
SPI_SETGRADIENTCAPTIONS = $1009;
SPI_GETKEYBOARDCUES = $100A;
SPI_SETKEYBOARDCUES = $100B;
SPI_GETMENUUNDERLINES = SPI_GETKEYBOARDCUES;
SPI_SETMENUUNDERLINES = SPI_SETKEYBOARDCUES;
SPI_GETACTIVEWNDTRKZORDER = $100C;
SPI_SETACTIVEWNDTRKZORDER = $100D;
SPI_GETHOTTRACKING = $100E;
SPI_SETHOTTRACKING = $100F;
SPI_GETMENUFADE = $1012;
SPI_SETMENUFADE = $1013;
SPI_GETSELECTIONFADE = $1014;
SPI_SETSELECTIONFADE = $1015;
SPI_GETTOOLTIPANIMATION = $1016;
SPI_SETTOOLTIPANIMATION = $1017;
SPI_GETTOOLTIPFADE = $1018;
SPI_SETTOOLTIPFADE = $1019;
SPI_GETCURSORSHADOW = $101A;
SPI_SETCURSORSHADOW = $101B;
SPI_GETMOUSESONAR = $101C;
SPI_SETMOUSESONAR = $101D;
SPI_GETMOUSECLICKLOCK = $101E;
SPI_SETMOUSECLICKLOCK = $101F;
SPI_GETMOUSEVANISH = $1020;
SPI_SETMOUSEVANISH = $1021;
SPI_GETFLATMENU = $1022;
SPI_SETFLATMENU = $1023;
SPI_GETDROPSHADOW = $1024;
SPI_SETDROPSHADOW = $1025;
SPI_GETUIEFFECTS = $103E;
SPI_SETUIEFFECTS = $103F;
SPI_GETFOREGROUNDLOCKTIMEOUT = $2000;
SPI_SETFOREGROUNDLOCKTIMEOUT = $2001;
SPI_GETACTIVEWNDTRKTIMEOUT = $2002;
SPI_SETACTIVEWNDTRKTIMEOUT = $2003;
SPI_GETFOREGROUNDFLASHCOUNT = $2004;
SPI_SETFOREGROUNDFLASHCOUNT = $2005;
SPI_GETCARETWIDTH = $2006;
SPI_SETCARETWIDTH = $2007;
SPI_GETMOUSECLICKLOCKTIME = $2008;
SPI_SETMOUSECLICKLOCKTIME = $2009;
SPI_GETFONTSMOOTHINGTYPE = $200A;
SPI_SETFONTSMOOTHINGTYPE = $200B;
SPIF_UPDATEINIFILE = 1;
SPIF_SENDWININICHANGE = 2;
SPIF_SENDCHANGE = SPIF_SENDWININICHANGE;

善用此函數可打造深度整合系統的工具軟體，但修改系統參數需謹慎，建議提供「還原預設」功能。