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使用raw input 代替全局键盘钩子
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//关于raw input 请查看msdn https://msdn.microsoft.com/en-us/library/windows/desktop/ms645536%28v=vs.85%29.aspx //效率 比 键盘钩子高太多 ，但是BCB 中无法识别 RAWINPUTDEVICE 结构 和RAW相关的函数 // rawinput4.cpp : 定义应用程序的入口点。
// #include "stdafx.h"
#include "rawinput4.h"
#include <set>
#include <string>
#include <algorithm> using namespace std; #define MAX_LOADSTRING 100 // 全局变量:
HINSTANCE hInst; // 当前实例
TCHAR szTitle[MAX_LOADSTRING]; // 标题栏文本
TCHAR szWindowClass[MAX_LOADSTRING]; // 主窗口类名
set<DWORD> keys; //避免按住不放不停的响应keydown
bool IsInKeys(DWORD key)
{
set<DWORD>::iterator itor =
find(keys.begin(),keys.end(),key); bool result = false;
if (itor == keys.end())
{
keys.insert(key);
result = false;
}
else
{
result = true;
}
return result;
}
//松开的时候，将key从set中移除
void erasekey(DWORD key)
{
keys.erase(key);
} // 此代码模块中包含的函数的前向声明:
ATOM MyRegisterClass(HINSTANCE hInstance);
BOOL InitInstance(HINSTANCE, int);
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK About(HWND, UINT, WPARAM, LPARAM); void RegKeyboardRawInput(HWND hwnd)
{
RAWINPUTDEVICE Rid[];
Rid[].usUsagePage = 0x01;
Rid[].usUsage = 0x06;
Rid[].dwFlags = RIDEV_INPUTSINK;//RIDEV_NOLEGACY; // adds HID keyboard and also ignores legacy keyboard messages
Rid[].hwndTarget = hwnd; if (RegisterRawInputDevices(Rid, , sizeof(Rid[])) == FALSE) {
MessageBox(NULL,L"注册raw input 失败！",L"注册 raw input",MB_OK+MB_ICONINFORMATION);
} } int APIENTRY _tWinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPTSTR lpCmdLine,
int nCmdShow)
{
UNREFERENCED_PARAMETER(hPrevInstance);
UNREFERENCED_PARAMETER(lpCmdLine); MSG msg;
HACCEL hAccelTable; // 初始化全局字符串
LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
LoadString(hInstance, IDC_RAWINPUT4, szWindowClass, MAX_LOADSTRING);
MyRegisterClass(hInstance); // 执行应用程序初始化:
if (!InitInstance (hInstance, nCmdShow))
{
return FALSE;
} hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_RAWINPUT4)); // 主消息循环:
while (GetMessage(&msg, NULL, , ))
{
if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
} return (int) msg.wParam;
} //
// 函数: MyRegisterClass()
//
// 目的: 注册窗口类。
//
// 注释:
//
// 仅当希望
// 此代码与添加到 Windows 95 中的“RegisterClassEx”
// 函数之前的 Win32 系统兼容时，才需要此函数及其用法。调用此函数十分重要，
// 这样应用程序就可以获得关联的
// “格式正确的”小图标。
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
WNDCLASSEX wcex; wcex.cbSize = sizeof(WNDCLASSEX); wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = WndProc;
wcex.cbClsExtra = ;
wcex.cbWndExtra = ;
wcex.hInstance = hInstance;
wcex.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_RAWINPUT4));
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+);
wcex.lpszMenuName = MAKEINTRESOURCE(IDC_RAWINPUT4);
wcex.lpszClassName = szWindowClass;
wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL)); return RegisterClassEx(&wcex);
} //
// 函数: InitInstance(HINSTANCE, int)
//
// 目的: 保存实例句柄并创建主窗口
//
// 注释:
//
// 在此函数中，我们在全局变量中保存实例句柄并
// 创建和显示主程序窗口。
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
HWND hWnd; hInst = hInstance; // 将实例句柄存储在全局变量中 hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, , CW_USEDEFAULT, , NULL, NULL, hInstance, NULL); if (!hWnd)
{
return FALSE;
} ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd); RegKeyboardRawInput(hWnd); return TRUE;
} //
// 函数: WndProc(HWND, UINT, WPARAM, LPARAM)
//
// 目的: 处理主窗口的消息。
//
// WM_COMMAND - 处理应用程序菜单
// WM_PAINT - 绘制主窗口
// WM_DESTROY - 发送退出消息并返回
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
int wmId, wmEvent;
PAINTSTRUCT ps;
HDC hdc; switch (message)
{
case WM_COMMAND:
wmId = LOWORD(wParam);
wmEvent = HIWORD(wParam);
// 分析菜单选择:
switch (wmId)
{
case IDM_ABOUT:
DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
break;
case IDM_EXIT:
DestroyWindow(hWnd);
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
break;
case WM_PAINT:
hdc = BeginPaint(hWnd, &ps);
// TODO: 在此添加任意绘图代码...
EndPaint(hWnd, &ps);
break;
case WM_DESTROY:
PostQuitMessage();
break;
case WM_INPUT:
{
UINT dwSize; GetRawInputData((HRAWINPUT)lParam, RID_INPUT, NULL, &dwSize,
sizeof(RAWINPUTHEADER));
LPBYTE lpb = new BYTE[dwSize];
if (lpb == NULL)
{
return ;
} if (GetRawInputData((HRAWINPUT)lParam, RID_INPUT, lpb, &dwSize,
sizeof(RAWINPUTHEADER)) != dwSize )
OutputDebugString (TEXT("GetRawInputData doesn't return correct size !\n")); RAWINPUT* raw = (RAWINPUT*)lpb; if (raw->header.dwType == RIM_TYPEKEYBOARD)
{ if ( raw->data.keyboard.Message == WM_KEYDOWN)
{
if (!IsInKeys(raw->data.keyboard.VKey))
{
char keytext[] = {};
BYTE state[] = {}; //通过虚拟键盘码得到名字
ToAscii(raw->data.keyboard.VKey,raw->data.keyboard.MakeCode,state,(LPWORD)keytext ,); char buf[] = {}; string s = "键盘按下 虚键码:"+ string(keytext); MessageBoxA(NULL,s.c_str(),"键盘",MB_OK);
} } if( raw->data.keyboard.Message == WM_KEYUP)
{
erasekey(raw->data.keyboard.VKey);
}
} delete[] lpb;
return ;
} default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return ;
} // “关于”框的消息处理程序。
INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
UNREFERENCED_PARAMETER(lParam);
switch (message)
{
case WM_INITDIALOG:
return (INT_PTR)TRUE; case WM_COMMAND:
if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
{
EndDialog(hDlg, LOWORD(wParam));
return (INT_PTR)TRUE;
}
break;
}
return (INT_PTR)FALSE;
}
