Summer 2010 EmbeddedSPARK Competition

To all you embedded hobbyists. I Just want to highlight the latest Microsoft embeddedSPARK compitition on this summer. Given the latest release, this round of the competition is focused on Embedded Standard 7.

You can find all the information you need to enter at http://www.embeddedspark.com/

A video about this can also be seen at http://www.embeddedspark.com/public/videos/embeddedSPARKSUMMER_howto.wmv

FYI - Round 1 closes on June 8
Any questions or issues I can help with please let me know.

>> Nigel

Hooking keyboard events in Windows CE/PPC

Hi,

I saw someone had asked about this on a newsgroup. Hooking keyboard events is where we can insert some code into GWES to see any keyboard presses that are happening in the system.

This is a useful process if you want to record a series of keypresses from a user which may span over a number of applications. Once recorded you can play back the keypresses by inserting them into GWES again using Keybd_event.

Note in Windows CE you can't hook mouse messages like in XP.

Heres the code:

// keyboardHook.cpp : Defines the entry point for the application.
//
#include "stdafx.h"

#define WH_KEYBOARD_LL 20

extern "C" BOOL WINAPI UnhookWindowsHookEx(HHOOK hhk);
extern "C" LRESULT WINAPI CallNextHookEx(HHOOK hhk, int nCode, WPARAM wParam,LPARAM lParam);
extern "C" BOOL RegisterHotKey(HWND hWnd, int id, UINT fsModifiers, UINT vk);
typedef LRESULT (CALLBACK* HOOKPROC)(int code, WPARAM wParam, LPARAM lParam);
extern "C" HHOOK WINAPI SetWindowsHookExW(int idHook,HOOKPROC lpfn,HINSTANCE hmod,DWORD dwThreadId);

#define SetWindowsHookEx SetWindowsHookExW

struct HHOOK__ * hKeyHook=NULL;

typedef struct tagKBDLLHOOKSTRUCT {
DWORD vkCode; // virtual key code
DWORD scanCode; // scan code DWORD flags;
DWORD flags; // unused
DWORD time; // time stamp for this message
DWORD dwExtraInfo; // extra info from the driver or keybd_event
} KBDLLHOOKSTRUCT, *PKBDLLHOOKSTRUCT;

//Low level Keyboard Hook Proc
__declspec(dllexport) LRESULT CALLBACK TabHook( int code, WPARAM wParam, LPARAM lParam )
{
KBDLLHOOKSTRUCT* v_kbdllData = (KBDLLHOOKSTRUCT*)lParam;
RETAILMSG(1, (TEXT("nCode = %d, wParam = %d\r\n"), code, wParam));
RETAILMSG(1, (TEXT("vkCode = %d, scan = %d, time = %d\r\n"),
v_kbdllData->vkCode, v_kbdllData->scanCode, v_kbdllData->time));
return CallNextHookEx(hKeyHook,code,wParam, lParam);
}

// This is a simple message loop that will be used
// to block while we are logging keys. It does not
// perform any real task ...

void MsgLoop()
{
MSG message;
while (GetMessage(&message,NULL,0,0))
{
TranslateMessage( &message );
DispatchMessage( &message );
}
}

HHOOK InstallHook()
{
HINSTANCE hExe = GetModuleHandle(NULL);
return SetWindowsHookEx (WH_KEYBOARD_LL,TabHook, hExe, NULL);
}

///////////////////////////////////////////////////////////////////////////////
//
// WinMain - Test Entry point
//
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow)
{
hKeyHook = InstallHook();
MsgLoop();
UnhookWindowsHookEx(hKeyHook);
return 1;
}