[DELPHI]简单地播放和暂停WAV文件
uses mmsystem;
function PlayWav(const FileName: string): Boolean;
begin
Result := PlaySound(PChar(FileName), 0, SND_ASYNC);
end;
procedure StopWav;
var
buffer: array[0..2] of char;
begin
buffer[0] := #0;
PlaySound(Buffer, 0, SND_PURGE);
end;
[DELPHI]取机器BIOS信息
with Memo1.Lines do
begin
Add('MainBoardBiosName:'+^I+string(Pchar(Ptr($FE061))));
Add('MainBoardBiosCopyRight:'+^I+string(Pchar(Ptr($FE091))));
Add('MainBoardBiosDate:'+^I+string(Pchar(Ptr($FFFF5))));
Add('MainBoardBiosSerialNo:'+^I+string(Pchar(Ptr($FEC71))));
end;
[DELPHI]网络下载文件
uses UrlMon;
function DownloadFile(Source, Dest: string): Boolean;
begin
try
Result := UrlDownloadToFile(nil, PChar(source), PChar(Dest), 0, nil) = 0;
except
Result := False;
end;
end;
if DownloadFile('http://www.borland.com/delphi6.zip, 'c:\kylix.zip') then
ShowMessage('Download succesful')
else ShowMessage('Download unsuccesful')
[DELPHI]解析服务器IP地址
uses winsock
function IPAddrToName(IPAddr : String): String;
var
SockAddrIn: TSockAddrIn;
HostEnt: PHostEnt;
WSAData: TWSAData;
begin
WSAStartup($101, WSAData);
SockAddrIn.sin_addr.s_addr:= inet_addr(PChar(IPAddr));
HostEnt:= gethostbyaddr(@SockAddrIn.sin_addr.S_addr, 4, AF_INET);
if HostEnt<>nil then result:=StrPas(Hostent^.h_name) else result:=';
end;
[DELPHI]取得快捷方式中的连接
function ExeFromLink(const linkname: string): string;
var
FDir,
FName,
ExeName: PChar;
z: integer;
begin
ExeName:= StrAlloc(MAX_PATH);
FName:= StrAlloc(MAX_PATH);
FDir:= StrAlloc(MAX_PATH);
StrPCopy(FName, ExtractFileName(linkname));
StrPCopy(FDir, ExtractFilePath(linkname));
z:= FindExecutable(FName, FDir, ExeName);
if z > 32 then
Result:= StrPas(ExeName)
else
Result:= ';
StrDispose(FDir);
StrDispose(FName);
StrDispose(ExeName);
end;
[DELPHI]控制TCombobox的自动完成
{'Sorted' property of the TCombobox to true }
var lastKey: Word; //全局变量
//TCombobox的OnChange事件
procedure TForm1.AutoCompleteChange(Sender: TObject);
var
SearchStr: string;
retVal: integer;
begin
SearchStr := (Sender as TCombobox).Text;
if lastKey <> VK_BACK then // backspace: VK_BACK or $08
begin
retVal := (Sender as TCombobox).Perform(CB_FINDSTRING, -1, LongInt(PChar(SearchStr)));
if retVal > CB_Err then
begin
(Sender as TCombobox).ItemIndex := retVal;
(Sender as TCombobox).SelStart := Length(SearchStr);
(Sender as TCombobox).SelLength :=
(Length((Sender as TCombobox).Text) - Length(SearchStr));
end; // retVal > CB_Err
end; // lastKey <> VK_BACK
lastKey := 0; // reset lastKey
end;
//TCombobox的OnKeyDown事件
procedure TForm1.AutoCompleteKeyDown(Sender: TObject; var Key: Word;
Shift: TShiftState);
begin
lastKey := Key;
end; |
