WinApi: SystemParametersInfo

举例: 更换桌面壁纸

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

 
 
 
 
 

 

 
  

SystemParametersInfo 的参数实在太多了...

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;