input

#include<dinput.h>

LPDIRECTINPUT8 directInput_;
LPDIRECTINPUTDEVICE8 keyboardDevice_;
char keyboardKeys_[256];
char prevKeyboardKeys_[256];

///////////////////////Init//////////////////////
ZeroMemory(keyboardKeys_,sizeof(keyboardKeys_));
ZeroMemory(prevKeyboardKeys_,sizeof(prevKeyboardKeys_));

HRESULT result = DirectInput8Create(hInstance_,DIRECTINPUT_VERSION,IID_IDirecctInput8,(void**)&directInput_,0);

if(FAILED(result)) return false;

result = directInput_->CreateDevice(GUID_SysKeyboard,&keyboardDevice_,0);

if(FAILED(result)) return false;

result = keyboardDevice_->SetDataFormat(&c_dfDKeyboard);
if(FAILED(result)) return false;

result = keyboardDevice_->SetCooperativeLevel(hsnd_,DISCL_FOREGROUND | DISCL_NONECXLUSIVE)；
if(FAILED(result)) return false;

result = keyboardDevice_->Acquire();
if(FAILED(result)) return false;

/////////////////////Update/////////////////////////

keyboardDevice_->GetDeviceState(sizeof(keyboardKeys_),(LPVOID)&keyboardKeys_);

if(GetAsyncKeyState(VK_ESCAPE)) PostQuitMessage(0);

if((prevKeyboardKeys_[DIK_DOWN)&0x80) && (keyboardKeys_[DIK_DOWN)&0x80))
{
}

memcpy( prevKeyboardKeys_, keyboardKeys_, sizeof( keyboardKeys_ ) );