D3D鍵盤輸入處理

 

 

#include "HandleKey.h"

 

BOOL InitKeyboard()

{

//建立DirectInput介面對象

HRESULT hr;

hr=DirectInput8Create(g_hInst,DIRECTINPUT_VERSION,

IID_IDirectInput8,(void**)&pIDirectInput,NULL);

if(FAILED(hr))

{

MessageBox(NULL,"建立IDIRECTINPUT8介面對象失敗.","警告",MB_OK|MB_ICONINFORMATION);

return false;

}

//使用DirectInput介面函數

hr=pIDirectInput->CreateDevice(GUID_SysKeyboard,&pIDirectInputDevice,NULL);

if(FAILED(hr))

{

MessageBox(NULL,"建立IDIRECTINPUTDEVICE8鍵盤輸入裝置對象失敗.","警告",MB_OK|MB_ICONINFORMATION);

SafeRelease(pIDirectInput);

return false;

}

//設定DirectInput裝置的資料格式

hr=pIDirectInputDevice->SetDataFormat(&c_dfDIKeyboard);

if(FAILED(hr))

{

MessageBox(NULL,"設定鍵盤的資料讀取資料格式失敗.","警告",MB_OK|MB_ICONINFORMATION);

SafeRelease(pIDirectInputDevice);

SafeRelease(pIDirectInput);

return false;

}

//設定DirectInput裝置的協調層級

hr=pIDirectInputDevice->SetCooperativeLevel(g_hWnd,DISCL_FOREGROUND|DISCL_EXCLUSIVE);

if(FAILED(hr))

{

MessageBox(NULL,"設定協調層級失敗.","警告",MB_OK|MB_ICONINFORMATION);

SafeRelease(pIDirectInputDevice);

SafeRelease(pIDirectInput);

return false;

}

//擷取輸入裝置的訪問權

hr=pIDirectInputDevice->Acquire();

if(FAILED(hr))

{

MessageBox(NULL,"取得鍵盤裝置的訪問權失敗.","警告",MB_OK|MB_ICONINFORMATION);

SafeRelease(pIDirectInputDevice);

SafeRelease(pIDirectInput);

return false;

}

//鍵盤緩衝區清零

ZeroMemory(keyBuffer,sizeof(char)*256);

return TRUE;

}

 

BOOL IsKeyPressed(int key)

{ 

//key=DIK_RIGHT,DIK_LEFT,DIK_A,.....

HRESULT hr;

hr=pIDirectInputDevice->GetDeviceState(sizeof(keyBuffer),(LPVOID)keyBuffer);

if(hr==DIERR_INPUTLOST)

{

pIDirectInputDevice->Acquire();  //重新擷取鍵盤的使用權

hr=pIDirectInputDevice->GetDeviceState(sizeof(keyBuffer),(LPVOID)keyBuffer);

if(FAILED(hr))

{ 

MessageBox(NULL,"取得鍵盤按鍵狀態失敗.","警告",MB_OK|MB_ICONINFORMATION);

return false;

}

}

if(keyBuffer[key] & 0x80)

{

return true;

}

return false;

}

 

void ReleaseCOMObject

()

{

if(pIDirectInputDevice)

{

pIDirectInputDevice->Unacquire();   //釋放DirectInput裝置的使用權

        SafeRelease(pIDirectInputDevice);//釋放DirectInput裝置對象

   SafeRelease(pIDirectInput);        //釋放DirectInput對象

}

}

 

 

 

 

 

#include <dinput.h>

 

 

extern HINSTANCE g_hInst;

extern HWND g_hWnd;

#define SafeRelease(pObject) if(pObject!=NULL){ pObject->Release(); pObject=NULL;}

 

LPDIRECTINPUT8 pIDirectInput=NULL;

LPDIRECTINPUTDEVICE8 pIDirectInputDevice=NULL;

char keyBuffer[256];  //鍵盤緩衝區

BOOL InitKeyboard();

BOOL IsKeyPressed(int);

void ReleaseCOMObject();

 

 

 

 

 

 

#include <windows.h>

#include <dinput.h>

 

#pragma    comment(lib,"dxguid.lib")

#pragma    comment(lib,"dinput8.lib")

#pragma    comment(lib,"odbc32.lib")

#pragma    comment(lib,"odbccp32.lib")

 

//定義全域變數

HINSTANCE g_hInst;

HWND g_hWnd;

const TCHAR g_szWndClass[]="Game";

const TCHAR g_szWndTitle[]="DirectInput鍵盤輸入";

WNDCLASSEX g_wcex;

//函數原型聲明

ATOMRegWndClass(HINSTANCE);

BOOLCreateWnd(HINSTANCE, int);

LRESULT CALLBACK  WndProc(HWND, UINT, WPARAM, LPARAM);

extern BOOL InitKeyboard();

extern BOOL IsKeyPressed(int);

extern void ReleaseCOMObject();

 

//函數定義

int APIENTRY WinMain(HINSTANCE hInstance,       //傳入的視窗控制代碼

HINSTANCE hPrevInstance,   //已存在的視窗控制代碼

LPSTR     lpCmdLine,        //傳入的命令列參數

int       nCmdShow)         //設定視窗的顯示方式

{

MSG msg;

g_hInst=hInstance;

if(!hPrevInstance)

{

//判斷是否已有應用程式執行個體在運行

RegWndClass(hInstance);

}

if(!CreateWnd(hInstance, nCmdShow))

{

return FALSE;

}

 

 

if(!InitKeyboard())

{

return FALSE;

}

while(msg.message!=WM_QUIT)

{

if(PeekMessage(&msg,NULL,0,0,PM_REMOVE))

{

TranslateMessage(&msg);

DispatchMessage(&msg);

}

else

{

if(IsKeyPressed(DIK_RIGHT))

{

MessageBox(NULL,"右方向鍵按下","按鍵狀態",MB_OK|MB_ICONINFORMATION);

}

if(IsKeyPressed(DIK_LEFT))

{

MessageBox(NULL,"左方向鍵按下","按鍵狀態",MB_OK|MB_ICONINFORMATION);

}

if(IsKeyPressed(DIK_D)&IsKeyPressed(DIK_LCONTROL)){

MessageBox(NULL,"Ctrl+D雙鍵按下","按鍵狀態",MB_OK|MB_ICONINFORMATION);

}

if(IsKeyPressed(DIK_A))

{

MessageBox(NULL,"A鍵按下","按鍵狀態",MB_OK|MB_ICONINFORMATION);

}

if(IsKeyPressed(DIK_ESCAPE))

{

PostQuitMessage(0);

}

}

}

ReleaseCOMObject();

UnregisterClass(g_szWndClass, g_wcex.hInstance);

return msg.wParam;

}

 

ATOM RegWndClass(HINSTANCE hInstance)

{

g_wcex.cbSize         = sizeof(WNDCLASSEX); 

g_wcex.style   = CS_HREDRAW | CS_VREDRAW;  //

g_wcex.lpfnWndProc= (WNDPROC)WndProc;

g_wcex.cbClsExtra= 0;

g_wcex.cbWndExtra= 0;

g_wcex.hInstance= hInstance;

g_wcex.hIcon   = 0;//LoadIcon(hInstance, (LPCTSTR)IDI_WINICON);

g_wcex.hCursor= LoadCursor(NULL, IDC_ARROW);

g_wcex.hbrBackground= (HBRUSH)GetStockObject(BLACK_BRUSH);

g_wcex.lpszMenuName= 0;

g_wcex.lpszClassName= g_szWndClass;

g_wcex.hIconSm= NULL;

return RegisterClassEx(&g_wcex);

}

 

BOOL CreateWnd(HINSTANCE hInstance, int nCmdShow)

{

 

g_hWnd = CreateWindow(g_szWndClass, g_szWndTitle, WS_OVERLAPPEDWINDOW,

CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);

if (!g_hWnd)

{

return FALSE;

}

ShowWindow(g_hWnd, nCmdShow);  //顯示視窗

UpdateWindow(g_hWnd);  //重新整理視窗

return TRUE;

}

 

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)

{

switch (message)

{

case WM_DESTROY:

PostQuitMessage(0);

break;

default:

return DefWindowProc(hWnd,message, wParam, lParam);

}

return 0;

}