procedure TForm1.SpeedButton2Click(Sender: TObject);
begin
if filelistbox1.FileName='' then
messagedlg('请选择一个文件',mtinformation,[mbok],0)
else
image1.Picture.LoadFromFile(filelistbox1.FileName);
end;
procedure TForm1.SpeedButton1Click(Sender: TObject);
var
reg:Tregistry;
begin
if filelistbox1.FileName='' then
messagedlg('请选择一个文件',mtinformation,[mbok],0)
else
begin
reg:=tregistry.Create ;
reg.RootKey:=HKey_current_user;//设置根键名称
reg.OpenKey('control panel\desktop',false); //打开control panel\desktop 对应的主键
reg.WriteString('tilewallpaper','0');
reg.WriteString('wallpaper',filelistbox1.FileName);
systemparametersinfo(spi_setdeskwallpaper,0,nil,spif_sendchange);
reg.CloseKey;
reg.Free; //调用打开子键的参数,第二个一定为false;
end;
end;
procedure TForm1.SpeedButton3Click(Sender: TObject);
begin
close;
end;