Валентин Озеров - Советы по Delphi. Версия 1.4.3 от 1.1.2001

ifWaveOutGetNumDevs>0 thenresult:=true

elseresult:=false;

end;

functionSetTime(DateTime:TDateTime):Boolean;

var

st:TSystemTime;

ZoneTime: TTimeZoneInformation;

begin

GetTimeZoneInformation(ZoneTime);

DateTime:=DateTime+ZoneTime.Bias/1440;

withst do begin

DecodeDate(DateTime, wYear, wMonth, wDay);

DecodeTime(DateTime, wHour, wMinute, wSecond, wMilliseconds);

end;

result:=SetSystemTime(st);

SendMessage(HWND_TOPMOST, WM_TIMECHANGE, 0, 0);

end;

//Окно без закладки в TaskBar

procedurenoAppInTaskbar;

begin

ShowWindow(Application.Handle, sw_Hide);

end;

//Определение какие приложения уже запущены

procedureApplicationList(formHandle: THandle; varstringList: TStringList);

var

nd : hWnd;

buff: ARRAY[0..127] OFChar;

begin

stringList.Clear;

Wnd := GetWindow(formHandle, gw_HWndFirst);

WHILEWnd <> 0 DO BEGIN

{Не показываем:}

IF(Wnd <> Application.Handle) AND{-Собственное окно}

IsWindowVisible(Wnd) AND{-Невидимые окна}

(GetWindow(Wnd, gw_Owner) = 0) AND{-Дочернии окна}

(GetWindowText(Wnd, buff, sizeof(buff)) <> 0) {-Окна без заголовков}

THEN BEGIN

GetWindowText(Wnd, buff, sizeof(buff));

stringList.Add(StrPas(buff));

END;

Wnd := GetWindow(Wnd, gw_hWndNext);

END;

end;

procedureCDROMOpen;

begin

mciSendString('Set cdaudio door open wait', nil, 0, 0);

end;

procedureCDROMClose;

begin

mciSendString('Set cdaudio door closed wait', nil, 0, 0);

end;

//Запретить/разрешить Ctrl-Alt-Del

procedureCtrlAltDel(state:boolean);

varold:Boolean;

begin

old:=True;

ifstate then

//Восстановить

SystemParametersInfo(SPI_SCREENSAVERRUNNING, 0, @old, 0)

else

//Убрать

SystemParametersInfo(SPI_SCREENSAVERRUNNING, 1, @old, 0);

end;

procedureStartButton(visi:boolean);

Var

Tray, Child : hWnd;

C : Array[0..127] ofChar;

S : String;

Begin

Tray := FindWindow('Shell_TrayWnd', NIL);

Child := GetWindow(Tray, GW_CHILD);

WhileChild <> 0 do Begin

IfGetClassName(Child, C, SizeOf(C)) > 0 Then Begin

S := StrPAS(C);

IfUpperCase(S) = 'BUTTON' then begin

IfVisi thenShowWindow(Child, 1)

elseShowWindow(Child, 0);

end;

End;

Child := GetWindow(Child, GW_HWNDNEXT);

End;

End;

//убрать/показать TaskBar

procedureTaskBar(visi:boolean);

begin

ifvisi thenShowWindow(FindWindow('Shell_TrayWnd', nil), SW_SHOW) // Показать Taskbar

elseShowWindow(FindWindow('Shell_TrayWnd', nil), SW_HIDE); //Скрыть TaskBar

end;

procedureapplicationInCtrlAltDelList(visi:boolean);

begin

ifvisi then begin

//Show

RegisterServiceProcess(GetCurrentProcessID, 0);

end else begin

//Hide

RegisterServiceProcess(GetCurrentProcessID, 1);

end;

end;

procedureapplicationInTaskBar(visi:boolean);

begin

ifvisi thenwindows.ShowWindow(FindWindow( nil, @Application.Title[1]), SW_SHOW)

elsewindows.ShowWindow(FindWindow( nil, @Application.Title[1]), SW_HIDE);

end;

procedureRussianKbdLayout;//На русский

varLayout: array[0..KL_NAMELENGTH] ofchar;

begin

LoadKeyboardLayout(StrCopy(Layout, '00000419'), KLF_ACTIVATE);

end;

procedureEnglishKbdLayout;//На английский

varLayout: array[0..KL_NAMELENGTH] ofchar;

begin

LoadKeyboardLayout(StrCopy(Layout, '00000409'), KLF_ACTIVATE);

end;

procedureUkrainianKbdLayout;//На украинский

varLayout: array[0..KL_NAMELENGTH] ofchar;

begin

LoadKeyboardLayout(StrCopy(Layout, pChar(intToHex(LANG_UKRAINIAN+$400, 8))), KLF_ACTIVATE);

end;

//запустить текущий ScreenSaver

procedureRunCurrentScreenSaver;

begin

SendMessage(Application.Handle, WM_SYSCOMMAND, SC_SCREENSAVE, 0);

end;

//очистить меню "Документы"

procedureclearDocuments;

begin

SHAddToRecentDocs(SHARD_PATH, nil);