Windows CE:四個LED燈分別控制

// LED.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "LED.h"
#include 
#include 

#define MAX_LOADSTRING 100

// Global Variables:
HINSTANCE   g_hInst;   // current instance
HWND    g_hWndMenuBar;  // menu bar handle
int LedStatus[4] = {0,0,0,0};

// Forward declarations of functions included in this code module:
ATOM   MyRegisterClass(HINSTANCE, LPTSTR);
BOOL   InitInstance(HINSTANCE, int);
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK About(HWND, UINT, WPARAM, LPARAM);

int WINAPI WinMain(HINSTANCE hInstance,
                   HINSTANCE hPrevInstance,
                   LPTSTR    lpCmdLine,
                   int       nCmdShow)
{
 MSG msg;

 // Perform application initialization:
 if (!InitInstance(hInstance, nCmdShow)) 
 {
  return FALSE;
 }

 HACCEL hAccelTable;
 hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_LED));

 // Main message loop:
 while (GetMessage(&msg, NULL, 0, 0)) 
 {
  if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg)) 
  {
   TranslateMessage(&msg);
   DispatchMessage(&msg);
  }
 }

 return (int) msg.wParam;
}

//
//  FUNCTION: MyRegisterClass()
//
//  PURPOSE: Registers the window class.
//
//  COMMENTS:
//
ATOM MyRegisterClass(HINSTANCE hInstance, LPTSTR szWindowClass)
{
 WNDCLASS wc;

 wc.style         = CS_HREDRAW | CS_VREDRAW;
 wc.lpfnWndProc   = WndProc;
 wc.cbClsExtra    = 0;
 wc.cbWndExtra    = 0;
 wc.hInstance     = hInstance;
 wc.hIcon         = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_LED));
 wc.hCursor       = 0;
 wc.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH);
 wc.lpszMenuName  = 0;
 wc.lpszClassName = szWindowClass;

 return RegisterClass(&wc);
}

//
//   FUNCTION: InitInstance(HINSTANCE, 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;
    TCHAR szTitle[MAX_LOADSTRING];  // title bar text
    TCHAR szWindowClass[MAX_LOADSTRING]; // main window class name

    g_hInst = hInstance; // Store instance handle in our global variable

    // SHInitExtraControls should be called once during your application's initialization to initialize any
    // of the device specific controls such as CAPEDIT and SIPPREF.
    SHInitExtraControls();

    LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING); 
    LoadString(hInstance, IDC_LED, szWindowClass, MAX_LOADSTRING);

    //If it is already running, then focus on the window, and exit
    hWnd = FindWindow(szWindowClass, szTitle); 
    if (hWnd) 
    {
        // set focus to foremost child window
        // The "| 0x00000001" is used to bring any owned windows to the foreground and
        // activate them.
        SetForegroundWindow((HWND)((ULONG) hWnd | 0x00000001));
        return 0;
    } 

    if (!MyRegisterClass(hInstance, szWindowClass))
    {
     return FALSE;
    }

    hWnd = CreateWindow(szWindowClass, szTitle, WS_VISIBLE,
        CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL);

    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
    if (g_hWndMenuBar)
    {
        RECT rc;
        RECT rcMenuBar;

        GetWindowRect(hWnd, &rc);
        GetWindowRect(g_hWndMenuBar, &rcMenuBar);
        rc.bottom -= (rcMenuBar.bottom - rcMenuBar.top);
  
        MoveWindow(hWnd, rc.left, rc.top, rc.right-rc.left, rc.bottom-rc.top, FALSE);
    }

    ShowWindow(hWnd, nCmdShow);
    UpdateWindow(hWnd);


    return TRUE;
}

//
//  FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM)
//
//  PURPOSE:  Processes messages for the main window.
//
//  WM_COMMAND - process the application menu
//  WM_PAINT - Paint the main window
//  WM_DESTROY - post a quit message and return
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    int wmId, wmEvent;
    PAINTSTRUCT ps;
    HDC hdc;

    static SHACTIVATEINFO s_sai;
 
    switch (message) 
    {
        case WM_COMMAND:
            wmId    = LOWORD(wParam); 
            wmEvent = HIWORD(wParam); 
            // Parse the menu selections:
            switch (wmId)
            {
                case IDM_HELP_ABOUT:
                    DialogBox(g_hInst, (LPCTSTR)IDD_ABOUTBOX, hWnd, About);
                    break;
                case IDM_OK:
                    SendMessage (hWnd, WM_CLOSE, 0, 0);    
                    break;
                default:
                    return DefWindowProc(hWnd, message, wParam, lParam);
            }
            break;
        case WM_CREATE:
            SHMENUBARINFO mbi;

            memset(&mbi, 0, sizeof(SHMENUBARINFO));
            mbi.cbSize     = sizeof(SHMENUBARINFO);
            mbi.hwndParent = hWnd;
            mbi.nToolBarId = IDR_MENU;
            mbi.hInstRes   = g_hInst;

            if (!SHCreateMenuBar(&mbi)) 
            {
                g_hWndMenuBar = NULL;
            }
            else
            {
                g_hWndMenuBar = mbi.hwndMB;
            }

            // Initialize the shell activate info structure
            memset(&s_sai, 0, sizeof (s_sai));
            s_sai.cbSize = sizeof (s_sai);
            break;
 case WM_LBUTTONDOWN :
     int x,y;
     x=LOWORD(lParam);
     y=HIWORD(lParam);
     if(x<=200)
  {
   LedStatus[x/50] = 1-LedStatus[x/50];
   InvalidateRect(hWnd, NULL, TRUE);
  }
     break; 
       case WM_PAINT:
   HDC hdcMem;
   HANDLE hOldSel, hBitmap;
   BITMAP bmp;   
            hdc = BeginPaint(hWnd, &ps);

   hdcMem = CreateCompatibleDC(hdc);
   hOldSel = SelectObject(hdcMem, (HGDIOBJ) hBitmap);            
            // TODO: Add any drawing code here...
   for(int i=0; i<4; i++)
   {
    if(LedStatus[i])
     hBitmap = LoadBitmap(GetModuleHandle(NULL), MAKEINTRESOURCE(IDB_BITMAP1));
    else
     hBitmap = LoadBitmap(GetModuleHandle(NULL), MAKEINTRESOURCE(IDB_BITMAP2));
    SelectObject(hdcMem, (HGDIOBJ) hBitmap);
    GetObject(hBitmap, sizeof(BITMAP), &bmp);
    BitBlt(hdc, i*50, 10, bmp.bmWidth, bmp.bmHeight, hdcMem, 0,0, SRCCOPY);
   }
   SelectObject(hdcMem, hOldSel);
   DeleteDC(hdcMem);            EndPaint(hWnd, &ps);
            break;
        case WM_DESTROY:
            CommandBar_Destroy(g_hWndMenuBar);
            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;
}

// Message handler for about box.
INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)
    {
        case WM_INITDIALOG:
            {
                // Create a Done button and size it.  
                SHINITDLGINFO shidi;
                shidi.dwMask = SHIDIM_FLAGS;
                shidi.dwFlags = SHIDIF_DONEBUTTON | SHIDIF_SIPDOWN | SHIDIF_SIZEDLGFULLSCREEN | SHIDIF_EMPTYMENU;
                shidi.hDlg = hDlg;
                SHInitDialog(&shidi);
            }
            return (INT_PTR)TRUE;

        case WM_COMMAND:
            if (LOWORD(wParam) == IDOK)
            {
                EndDialog(hDlg, LOWORD(wParam));
                return TRUE;
            }
            break;

        case WM_CLOSE:
            EndDialog(hDlg, message);
            return TRUE;

    }
    return (INT_PTR)FALSE;
}