捕获Windows Mobile设备中的按键序列
本文关键字:Windows Mobile 捕获 | 更新日期: 2023-09-27 18:09:44
我需要从Windows Mobile设备捕获按键序列以触发胁迫事件。如果我的应用程序是唯一运行的东西,我会使用基本形式的事件处理程序来检查按键但是…由于应用程序可以启动浏览器并使用SOTI,因此它也必须在主应用程序之外工作。
是否有可能在Windows Mobile设备上创建一个TSR应用程序,可以发送web服务消息(同时在通信中)?
我已经编写了几个调用不同函数的键盘钩子'应用程序'。您还可以使用它来执行套接字或web服务调用:http://www.hjgode.de/wp/?s=hook和http://www.hjgode.de/wp/?s=keytoggle
// The command below tells the OS that this EXE has an export function so we can use the global hook without a DLL
__declspec(dllexport) LRESULT CALLBACK g_LLKeyboardHookCallback(
int nCode, // The hook code
WPARAM wParam, // The window message (WM_KEYUP, WM_KEYDOWN, etc.)
LPARAM lParam // A pointer to a struct with information about the pressed key
)
{
/* typedef struct {
DWORD vkCode;
DWORD scanCode;
DWORD flags;
DWORD time;
ULONG_PTR dwExtraInfo;
} KBDLLHOOKSTRUCT, *PKBDLLHOOKSTRUCT;*/
// Get out of hooks ASAP; no modal dialogs or CPU-intensive processes!
// UI code really should be elsewhere, but this is just a test/prototype app
// In my limited testing, HC_ACTION is the only value nCode is ever set to in CE
static int iActOn = HC_ACTION;
static bool isShifted=false;
#ifdef DEBUG
static TCHAR str[MAX_PATH];
#endif
PKBDLLHOOKSTRUCT pkbhData = (PKBDLLHOOKSTRUCT)lParam;
//DWORD vKey;
if (nCode == iActOn)
{
//only process unflagged keys
if (pkbhData->flags != 0x00)
return CallNextHookEx(g_hInstalledLLKBDhook, nCode, wParam, lParam);
//check vkCode against forbidden key list
if(pForbiddenKeyList!=NULL)
{
BOOL bForbidden=false;
int j=0;
do{
if(pForbiddenKeyList[j]==(BYTE)pkbhData->vkCode)
{
bForbidden=true;
DEBUGMSG(1, (L"suppressing forbidden key: 0x%0x'n",pkbhData->vkCode));
continue;
}
j++;
}while(!bForbidden && pForbiddenKeyList[j]!=0x00);
if(bForbidden){
return true;
}
}
SHORT sShifted = GetAsyncKeyState(VK_SHIFT);
if((sShifted & 0x800) == 0x800)
isShifted = true;
else
isShifted = false;
//check and toggle for Shft Key
//do not process shift key
if (pkbhData->vkCode == VK_SHIFT){
DEBUGMSG(1, (L"Ignoring VK_SHIFT'n"));
return CallNextHookEx(g_hInstalledLLKBDhook, nCode, wParam, lParam);
}
//################################################################
//check if the actual key is a match key including the shift state
if ((byte)pkbhData->vkCode == (byte)szVKeySeq[iMatched]){
DEBUGMSG(1 , (L"==== char match'n"));
if (bCharShiftSeq[iMatched] == isShifted){
DEBUGMSG(1 , (L"==== shift match'n"));
}
else{
DEBUGMSG(1 , (L"==== shift not match'n"));
}
}
if( wParam == WM_KEYUP ){
DEBUGMSG(1, (L"---> szVKeySeq[iMatched] = 0x%02x'n", (byte)szVKeySeq[iMatched]));
if ( ((byte)pkbhData->vkCode == (byte)szVKeySeq[iMatched]) && (isShifted == bCharShiftSeq[iMatched]) ) {
//the first match?
if(iMatched==0){
//start the timer and lit the LED
LedOn(LEDid,1);
tID=SetTimer(NULL, 0, matchTimeout, (TIMERPROC)Timer2Proc);
}
iMatched++;
DEBUGMSG(1, (L"iMatched is now=%i'n", iMatched));
//are all keys matched
if (iMatched == iKeyCount){
//show modeless dialog
DEBUGMSG(1, (L"FULL MATCH, starting ...'n"));
PostMessage(g_hWnd, WM_SHOWMYDIALOG, 0, 0);
//reset match pos and stop timer
DEBUGMSG(1, (L"FULL MATCH: Reset matching'n"));
LedOn(LEDid,0);
iMatched=0; //reset match pos
KillTimer(NULL, tID);
//return CallNextHookEx(g_hInstalledLLKBDhook, nCode, wParam, lParam);
}
//return -1; //do not forward key?
}
else
{
KillTimer(NULL, tID);
LedOn(LEDid,0);
iMatched=0; //reset match pos
DEBUGMSG(1, (L"FULL MATCH missed. Reseting matching'n"));
}
} //if wParam == WM_KEY..
}
return CallNextHookEx(g_hInstalledLLKBDhook, nCode, wParam, lParam);
}
查找查找键序列的钩子示例:http://code.google.com/p/keytoggleboot/source/browse/trunk/KeyToggleBoot/ReadMe.txt?spec=svn14&r=14
网上也有关于键盘钩子的文章和帖子(例如在codeproject)。
我最近需要从手持设备获得一个密钥代码,我刚刚创建了一个带有1个文本框的空项目,包括以下文件并添加这段代码:
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
HookKeys x = new HookKeys();
x.Start();
x.HookEvent += new HookKeys.HookEventHandler(HookEvent);
}
private void HookEvent(HookEventArgs e, KeyBoardInfo keyBoardInfo)
{
textBox1.Text = "vkCode = " + keyBoardInfo.vkCode + Environment.NewLine + textBox1.Text;
}
}
windows mobile 6.5专业版