Archived from groups: microsoft.public.pocketpc,microsoft.public.pocketpc.developer,microsoft.public.windowsce.app.development,microsoft.public.windowsce.embedded (
More info?)
I would use the debugger to step through this thread, after removing the
MessageBox calls as Paul suggests. We discussed that worker threads don't
do UI, didn't we?
Also note, if you ever get to that while loop, your system will become
pretty useless since it will constantly run. You should at least put a
Sleep() in it.
--
Bruce Eitman (eMVP)
Senior Engineer
beitman AT applieddata DOT net
Applied Data Systems
www.applieddata.net
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"Paul G. Tobey [eMVP]" <ptobey no spam AT no instrument no spam DOT com>
wrote in message news:%23N1UooM0EHA.3972@TK2MSFTNGP12.phx.gbl...
> You can't UI I/O from the thread. You can only do that from the UI thread
> in your application. If you use DEBUGMSG() or OutputDebugString() to
> indicate operation of your thread, it will continue past the MessageBox()
> stuff. Basically, at that point, it's waiting for a window to be created
to
> display your output and, since that thread has no UI processing (doesn't
> call GetNextEvent(), that window will never be created). Your thread
should
> *not* do anything that directly requires UI operations...
>
> Paul T.
>
> "Frank Vicious" <dontspame@lame.com> wrote in message
> news:O2UFiRM0EHA.1260@TK2MSFTNGP12.phx.gbl...
> >> "Bruce Eitman (eMVP)" <beitmannospam@NOSPAM_applieddata.NOSPAM_net>
wrote
> > in message
> >>
> >> You are going to have to show us some code for that thread.
> >
> > Bruce!
> >
> > I put the thread creation in the WM_INITDIALOG case for my DialogBox.
> > Once
> > this dialogbox is setup I want to have a thread created, reading serial
> > data, and updating the text fields of this dialogbox. I've taken out
> > parts
> > of the code to simplify this post. Thanks for any info!
> >
> > // Global Variables:
> > HINSTANCE g_hInst; // The current instance
> > HWND g_hwndCB; // The command bar handle
> > HWND global_handle;
> > HANDLE serial_threadHDL; // Handle to the serial thread.
> >
> > int WINAPI WinMain( HINSTANCE hInstance,
> > HINSTANCE hPrevInstance,
> > LPTSTR lpCmdLine,
> > int nCmdShow)
> > {
> >
> > if (!InitInstance (hInstance, nCmdShow))
> > {
> > return FALSE;
> > }
> >
> > // Key combos
> > hAccelTable = LoadAccelerators(hInstance, (LPCTSTR)IDC_BAREBONES4);
> >
> > // Main message loop:
> > while (GetMessage(&msg, NULL, 0, 0))
> > {
> > if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
> > {
> > TranslateMessage(&msg);
> > DispatchMessage(&msg);
> > }
> > }
> >
> > return msg.wParam;
> > }
> >
> > ATOM MyRegisterClass(HINSTANCE hInstance, LPTSTR szWindowClass)
> > {
> > WNDCLASS wc;
> >
> > wc.style = CS_HREDRAW | CS_VREDRAW;
> > wc.lpfnWndProc = (WNDPROC) WndProc;
> > wc.cbClsExtra = 0;
> > wc.cbWndExtra = 0;
> > wc.hInstance = hInstance;
> > wc.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_BAREBONES4));
> > wc.hCursor = 0;
> > wc.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH);
> > wc.lpszMenuName = 0;
> > wc.lpszClassName = szWindowClass;
> >
> > return RegisterClass(&wc);
> > }
> >
> > //
> > // FUNCTION: InitInstance(HANDLE, int)
> > //
> > // PURPOSE: Saves instance handle and creates main window
> > //
> > // COMMENTS:
> > //
> > // In this function, we save the instance handle in a global variable
> > and
> > // create and display the main program window.
> > //
> > BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
> > {
> > HWND hWnd = NULL;
> > TCHAR szTitle[MAX_LOADSTRING]; // The title bar text
> > TCHAR szWindowClass[MAX_LOADSTRING]; // The window class name
> >
> > g_hInst = hInstance; // Store instance handle in our global variable
> > // Initialize global strings
> > LoadString(hInstance, IDC_BAREBONES4, szWindowClass, MAX_LOADSTRING);
> > LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
> >
> > //If it is already running, then focus on the window
> > hWnd = FindWindow(szWindowClass, szTitle);
> > if (hWnd)
> > {
> > // set focus to foremost child window
> > // The "| 0x01" is used to bring any owned windows to the foreground
and
> > // activate them.
> > SetForegroundWindow((HWND)((ULONG) hWnd | 0x00000001));
> > return 0;
> > }
> >
> > MyRegisterClass(hInstance, szWindowClass);
> >
> > RECT rect;
> > GetClientRect(hWnd, &rect);
> >
> > hWnd = CreateWindow(szWindowClass, szTitle, WS_VISIBLE,
> > CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL,
> > hInstance, NULL);
> >
> > global_handle = hWnd;
> >
> > if (!hWnd)
> > {
> > return FALSE;
> > }
> > //When the main window is created using CW_USEDEFAULT the height of the
> > menubar (if one
> > // is created is not taken into account). So we resize the window after
> > creating it
> > // if a menubar is present
> > {
> > RECT rc;
> > GetWindowRect(hWnd, &rc);
> > rc.bottom -= MENU_HEIGHT;
> > if (g_hwndCB)
> > MoveWindow(hWnd, rc.left, rc.top, rc.right, rc.bottom, FALSE);
> > }
> >
> >
> > ShowWindow(hWnd, nCmdShow);
> > UpdateWindow(hWnd);
> >
> > return TRUE;
> > }
> >
> > LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM
> > lParam)
> > {
> > HDC hdc;
> > int wmId, wmEvent;
> > PAINTSTRUCT ps;
> > TCHAR szHello[MAX_LOADSTRING];
> >
> > switch (message)
> > {
> > case WM_COMMAND:
> > wmId = LOWORD(wParam);
> > wmEvent = HIWORD(wParam);
> >
> > // Parse the menu selections:
> > switch (wmId)
> > {
> > case IDM_HELP_ABOUT:
> >
> > // Once the "ABOUT" field is clicked on in the menu then the
id_sample
> > DialogBox will show up -- calling with Sample()
> > // Create the thread in the Sample CALL BACK routine.
> > DialogBox(g_hInst, (LPCTSTR)id_sample, hWnd, (DLGPROC)Sample);
> >
> > break;
> >
> >
> > case IDOK:
> > SendMessage(hWnd, WM_ACTIVATE, MAKEWPARAM(WA_INACTIVE, 0),
> > (LPARAM)hWnd);
> > SendMessage (hWnd, WM_CLOSE, 0, 0);
> > break;
> > default:
> > return DefWindowProc(hWnd, message, wParam, lParam);
> > }
> > break;
> >
> >
> > case WM_CREATE:
> > g_hwndCB = CreateRpCommandBar(hWnd);
> > // Initialize the shell activate info structure
> > memset (&s_sai, 0, sizeof (s_sai));
> > s_sai.cbSize = sizeof (s_sai);
> > break;
> > case WM_PAINT:
> > RECT rt;
> > hdc = BeginPaint(hWnd, &ps);
> > GetClientRect(hWnd, &rt);
> > LoadString(g_hInst, IDS_HELLO, szHello, MAX_LOADSTRING);
> >
> >
> > DrawText(hdc, szHello, _tcslen(szHello), &rt,
> > DT_SINGLELINE | DT_VCENTER | DT_CENTER);
> > EndPaint(hWnd, &ps);
> > break;
> > case WM_DESTROY:
> > CommandBar_Destroy(g_hwndCB);
> > PostQuitMessage(0);
> > break;
> > case WM_ACTIVATE:
> > // Notify shell of our activate message
> > SHHandleWMActivate(hWnd, wParam, lParam, &s_sai, FALSE);
> > break;
> > case WM_SETTINGCHANGE:
> > SHHandleWMSettingChange(hWnd, wParam, lParam, &s_sai);
> > break;
> > default:
> > return DefWindowProc(hWnd, message, wParam, lParam);
> > }
> > return 0;
> > }
> >
> > HWND CreateRpCommandBar(HWND hwnd)
> > {
> > SHMENUBARINFO mbi;
> >
> > memset(&mbi, 0, sizeof(SHMENUBARINFO));
> > mbi.cbSize = sizeof(SHMENUBARINFO);
> > mbi.hwndParent = hwnd;
> > mbi.nToolBarId = IDM_MENU;
> > mbi.hInstRes = g_hInst;
> > mbi.nBmpId = 0;
> > mbi.cBmpImages = 0;
> >
> > if (!SHCreateMenuBar(&mbi))
> > return NULL;
> >
> > return mbi.hwndMB;
> >
> >
> >
> > }
> >
> > // This is the callback fun citon for my dialogbox. I want to create a
> > thread that will read in serial data and update
> > // the dialogbox!
> >
> > LRESULT CALLBACK Sample(HWND hDlg, UINT message, WPARAM wParam, LPARAM
> > lParam)
> > {
> > SHINITDLGINFO shidi;
> >
> > switch (message)
> > {
> >
> > case WM_INITDIALOG:
> >
> > // Create a Done button and size it.
> > shidi.dwMask = SHIDIM_FLAGS;
> > shidi.dwFlags = SHIDIF_DONEBUTTON | SHIDIF_SIPDOWN |
> > SHIDIF_SIZEDLGFULLSCREEN;
> > shidi.hDlg = hDlg;
> > SHInitDialog(&shidi);
> >
> > // start thread when dialog is first created! Should I be doing it
> > here?
> > // I would like ti have it under WM_COMMAND under the IDOK case but
it
> > didn't seem to be
> > // working properly there
> >
> > serial_threadHDL=
> > CreateThread(NULL,NULL,sample_action,lpParam1,0,lpThreadId);
> >
> > return TRUE;
> >
> > case WM_COMMAND:
> > if (LOWORD(wParam) == IDOK)
> > {
> > return TRUE;
> > }
> >
> > break;
> > }
> > return FALSE;
> > }
> >
> >
> > DWORD sample_action(LPVOID lpParameter)
> > {
> > static int countie = 0;
> >
> >
> > // All I see is this message! I would expect to eventually to see the
> > next
> > message! I never seem to jump into the while() loop!
> >
> > wsprintf(Message,L"Thread for serial data should have started
> > here!",szPortNamie, sizebaby);
> > MessageBox(NULL,Message,L"Triage Wireless",MB_OK);
> >
> > wsprintf(Message,L" hahahahah Thread for serial data should have
started
> > here!",szPortNamie, sizebaby);
> > MessageBox(NULL,Message,L"Triage Wireless",MB_OK);
> >
> >
> >
> >
> > while (1)
> > {
> > // Continuously reading in serial data updating the dialog
> > box
> > and displaying MessageBoxes
> >
> >
> > }
> >
> >
> >
> > }
> >
> >
> >
> >
> >
>
>
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