:: 设置壁纸
SetWallPaper.exe "c:\Test.bmp"
:: SetWallPaper.exe "c:\Test.jpg"

:: 获取壁纸所在路径。
SetWallPaper.exe /where
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#AutoIt3Wrapper_Change2CUI=y
#include <GDIPlus.au3>
Global Const $Spi_SetDeskWallPaper = 0x14
Global Const $Spi_GetDeskWallPaper = 0x73
Global Const $Spif_SendChange = 2
Global Const $sHelp = @ScriptName & ' [bitmap path|/where]' & @CrLf
If $CmdLine[0] = 0 Then
ConsoleWrite($sHelp)
Exit(0)
ElseIf $CmdLine[0] <> 1 Then
ConsoleWrite($sHelp)
Exit(-1)
EndIf
Switch $CmdLine[1]
Case "/where"
ConsoleWrite(_GetDesktopWallPaper() & @CrLf)
Exit(0)
Case Else
If not FileExists($CmdLine[1]) Then Exit(1)
If _SetDesktopWallPaper($CmdLine[1]) Then Exit(0)
Exit(1)
EndSwitch
Func _SetDesktopWallPaper($szPaperPath, $iSendChange = 2)
Local $iResult, $tPaperPath
If not _IsBMP($szPaperPath) Then
  _JpgToBmp($szPaperPath, @TempDir & "\WallPaper.bmp")
  $szPaperPath = @TempDir & "\WallPaper.bmp"
EndIf
$tPaperPath = DllStructCreate("char[260]")
DllStructSetData($tPaperPath, 1, $szPaperPath)
$iResult = DllCall("user32.dll", "int", "SystemParametersInfo", _
  "uint", $Spi_SetDeskWallPaper, _
  "uint", 0, _
  "ptr", DllStructGetPtr($tPaperPath), _
  "uint", $iSendChange)
$tPaperPath = 0
Return $iResult[0] <> 0
EndFunc ;==>_SetDesktopWallPaper()
Func _GetDesktopWallPaper()
Local $buffer = DllStructCreate("char[260]"), $szResult
DllCall("user32.dll", "int", "SystemParametersInfo", _
  "uint", $Spi_GetDeskWallPaper, _
  "uint", DllStructGetSize($buffer), _
  "ptr", DllStructGetPtr($buffer), _
  "uint", 0)
$szResult = DllStructGetData($buffer, 1)
$buffer = 0
Return $szResult
EndFunc ;==>_GetDesktopWallPaper()
Func _IsBMP($szFile)
If StringRegExp($szFile, "(?i)\.bmp$") Then Return True
EndFunc ;==>_IsBMP()
Func _JpgToBmp($Jpg,$Bmp)
Local $hImage, $CLSID
_GDIPlus_Startup()
$hImage = _GDIPlus_ImageLoadFromFile($Jpg)
$CLSID = _GDIPlus_EncodersGetCLSID("BMP")
_GDIPlus_ImageSaveToFileEx($hImage,$Bmp, $CLSID)
_GDIPlus_ShutDown()
EndFunc ;==>_JpgToBmp()
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