盒子论坛 v2.1

uses
Registry;

function RefreshScreenIcons : Boolean;
const
KEY_TYPE = HKEY_CURRENT_USER;
KEY_NAME = 'Control Panel\Desktop\WindowMetrics';
KEY_VALUE = 'Shell Icon Size';
var
Reg: TRegistry;
strDataRet, strDataRet2: string;

procedure BroadcastChanges;
var
success: DWORD;
begin
SendMessageTimeout(HWND_BROADCAST,
WM_SETTINGCHANGE,
SPI_SETNONCLIENTMETRICS,
0,
SMTO_ABORTIFHUNG,
10000,
success);
end;

begin
Result := False;
Reg := TRegistry.Create;
try
Reg.RootKey := KEY_TYPE;
// 1. open HKEY_CURRENT_USER\Control Panel\Desktop\WindowMetrics
if Reg.OpenKey(KEY_NAME, False) then
begin
// 2. Get the value for that key
strDataRet := Reg.ReadString(KEY_VALUE);
Reg.CloseKey;
if sDataRet <> '' then
begin
// 3. Convert sDataRet to a number and subtract 1,
// convert back to a string, and write it to the registry
sDataRet2 := IntToStr(StrToInt(strDataRet) - 1);
if Reg.OpenKey(KEY_NAME, False) then
begin
Reg.WriteString(KEY_VALUE, strDataRet2);
Reg.CloseKey;
// 4. because the registry was changed, broadcast
// the fact passing SPI_SETNONCLIENTMETRICS,
// with a timeout of 10000 milliseconds (10 seconds)
BroadcastChanges;
// 5. the desktop will have refreshed with the
// new (shrunken) icon size. Now restore things
// back to the correct settings by again writing
// to the registry and posing another message.
if Reg.OpenKey(KEY_NAME, False) then
begin
Reg.WriteString(KEY_VALUE, strDataRet);
Reg.CloseKey;
// 6. broadcast the change again
BroadcastChanges;
Result := True;
end;
end;
end;
end;
finally
Reg.Free;
end;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
RefreshScreenIcons
end;

帮帮忙，最好是能一句一句的解释一下
解释后请发送到:achinacracker@163.com 谢谢~
----------------------------------------------
-

信息

登陆以后才能回复