KeyBoardMonitor

A module that helps you to monitor keyboard actions.

Descriptions

KeyBoardMonitor is written by C. It allows you to monitor Keyboard actions in another thread. This programm can only be used on Window, because it based on api that support by Windows.

API

MonitorStart()

void MonitorSTart(void);

Create a new thread to update the key's actions.

MonitorEnd()

void MonitorEnd(void);

End up the thread.

KBM_KEYS_STATE[256]

uint8_t KBM_KEYS_STATE[256];

This is a global property. The type is bool, 1 means the key is on pressed and 0 means the key is not on pressed. For each key on the keyboard, it has a virtual code which ranged between 0 to 196, but it is noncontinuous. But you can access the array by macro definitions. You can see all of it in KBM.h file. What you have to be carefull is that not all of keys' state in the array will be update. The programm only focuses on common keys. If you need more keys, edit the source code yourself. The function you need to perfect is DWORD WINAPI KeyStateUpdate(LPVOID lpParam);. You can find it in KBM.h and KeyBoardMonitor.c. What really needs to mention is that this array is been protected by the mutex, which means it can only be access by one thread. So if you get more than on thread that is associated with this array, you have to consider race condition, i.e. deadlock. Don't try to set a new array to detect changes of KBM_KEYS_STATE.

KBM_MONITOR_THREAD_HANDLE

HANDLE KBM_MONITOR_THREAD_HANDLE;

This is the thread handle where you can use Windows api to control the thread.

KBM_MONITOR_THREAD_ID

DWORD KBM_MONITOR_THREAD_ID;

This is the thread handle.

Example

// ./test_file.c
#include <stdio.h>
#include "KBM.h"

void main()
{
    MonitorStart();
    while (1)
    {  
        printf("%d\n", KBM_KEYS_STATE[VK_A]);
        // YourFunction();  // Complete with you functions
    }
    MonitorEnd();
}

Then put all of the files, i.e. test_file.c KBM.h kbm.dll together in your project folder.

gcc -o test test_file.c -L./ -lkbm

Then run the order. It will generate a test.exe file in project folder. Dubble tap to run.

Statement

The programm should not be used as any illegal purposes. Including but not limited to monitoring users privacy. Any consequences resulting from improper purposes will be considered as personal behavior.