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Change the wallpaper in Delphi

Title: Change the wallpaper in Delphi Use SystemParametersInfo procedure with SPI_SETDESCKWALLPAPER value. procedure TForm1.Button1Click(Sender: TObject); var St: array[0..100] of Char; begin St:='C:\Windows\MyWallPaper.bmp'; SystemParametersInfo(SPI_SETDESKWALLPAPER, 0, @St, SPIF_SENDCHANGE); end;