www.pudn.com > HelloCE.rar > HelloCE.cpp, change:2003-12-15,size:5564b

//====================================================================== 
// HelloCE - A simple application for Windows CE 
// 
// Written for the book Programming Windows CE 
// Copyright (C) 2003 Douglas Boling 
//====================================================================== 
#include                  // For all that Windows stuff 
#include "helloce.h"                 // Program-specific stuff 
 
//---------------------------------------------------------------------- 
// Global data 
// 
const TCHAR szAppName[] = TEXT("HelloCE"); 
HINSTANCE hInst;                     // Program instance handle 
 
// Message dispatch table for MainWindowProc 
const struct decodeUINT MainMessages[] = { 
    WM_PAINT, DoPaintMain, 
    WM_DESTROY, DoDestroyMain, 
}; 
 
//====================================================================== 
// Program entry point 
// 
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, 
                    LPWSTR lpCmdLine, int nCmdShow) { 
    MSG msg; 
    int rc = 0; 
    HWND hwndMain; 
 
    // Initialize this instance. 
    hwndMain = InitInstance (hInstance, lpCmdLine, nCmdShow); 
    if (hwndMain == 0) return 0x10; 
 
    // Application message loop 
    while (GetMessage (&msg, NULL, 0, 0)) { 
        TranslateMessage (&msg); 
        DispatchMessage (&msg); 
    } 
    // Instance cleanup 
    return TermInstance (hInstance, msg.wParam); 
} 
//---------------------------------------------------------------------- 
// InitInstance - Instance initialization 
// 
HWND InitInstance (HINSTANCE hInstance, LPWSTR lpCmdLine, int nCmdShow) { 
    WNDCLASS wc; 
    HWND hWnd; 
 
    // Save program instance handle in global variable. 
    hInst = hInstance; 
 
#if defined(WIN32_PLATFORM_PSPC) 
    // If Pocket PC, only allow one instance of the application 
    HWND hWnd = FindWindow (szAppName, NULL); 
    if (hWnd) { 
        SetForegroundWindow ((HWND)(((DWORD)hWnd) | 0x01));     
        return -1; 
    } 
#endif 
 
    // Register application main window class. 
    wc.style = 0;                             // Window style 
    wc.lpfnWndProc = MainWndProc;             // Callback function 
    wc.cbClsExtra = 0;                        // Extra class data 
    wc.cbWndExtra = 0;                        // Extra window data 
    wc.hInstance = hInstance;                 // Owner handle 
    wc.hIcon = NULL,                          // Application icon 
    wc.hCursor = LoadCursor (NULL, IDC_ARROW);// Default cursor 
    wc.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH); 
    wc.lpszMenuName =  NULL;                  // Menu name 
    wc.lpszClassName = szAppName;             // Window class name 
 
    if (RegisterClass (&wc) == 0) return 0; 
 
    // Create main window. 
    hWnd = CreateWindow (szAppName,           // Window class 
                         TEXT("HelloCE"),     // Window title 
                         // Style flags 
                         WS_VISIBLE | WS_CAPTION | WS_SYSMENU, 
                         CW_USEDEFAULT,       // x position 
                         CW_USEDEFAULT,       // y position 
                         CW_USEDEFAULT,       // Initial width 
                         CW_USEDEFAULT,       // Initial height 
                         NULL,                // Parent 
                         NULL,                // Menu, must be null 
                         hInstance,           // Application instance 
                         NULL);               // Pointer to create 
                                              // parameters 
    if (!IsWindow (hWnd)) return 0;  // Fail code if not created. 
 
    // Standard show and update calls 
    ShowWindow (hWnd, nCmdShow); 
    UpdateWindow (hWnd); 
    return hWnd; 
} 
//---------------------------------------------------------------------- 
// TermInstance - Program cleanup 
// 
int TermInstance (HINSTANCE hInstance, int nDefRC) { 
    return nDefRC; 
} 
//====================================================================== 
// Message handling procedures for main window 
// 
//---------------------------------------------------------------------- 
// MainWndProc - Callback function for application window 
// 
LRESULT CALLBACK MainWndProc (HWND hWnd, UINT wMsg, WPARAM wParam,  
                              LPARAM lParam) { 
    INT i; 
    // 
    // Search message list to see if we need to handle this 
    // message.  If in list, call procedure. 
    // 
    for (i = 0; i < dim(MainMessages); i++) { 
        if (wMsg == MainMessages[i].Code) 
            return (*MainMessages[i].Fxn)(hWnd, wMsg, wParam, lParam); 
    } 
    return DefWindowProc (hWnd, wMsg, wParam, lParam); 
} 
//---------------------------------------------------------------------- 
// DoPaintMain - Process WM_PAINT message for window. 
// 
LRESULT DoPaintMain (HWND hWnd, UINT wMsg, WPARAM wParam,  
                     LPARAM lParam) { 
    PAINTSTRUCT ps; 
    RECT rect; 
    HDC hdc; 
 
    // Get the size of the client rectangle 
    GetClientRect (hWnd, &rect); 
 
    hdc = BeginPaint (hWnd, &ps);  
    DrawText (hdc, TEXT ("Hello Windows CE!"), -1, &rect,  
              DT_CENTER | DT_VCENTER | DT_SINGLELINE); 
 
    EndPaint (hWnd, &ps);  
    return 0; 
} 
//---------------------------------------------------------------------- 
// DoDestroyMain - Process WM_DESTROY message for window. 
// 
LRESULT DoDestroyMain (HWND hWnd, UINT wMsg, WPARAM wParam,  
                       LPARAM lParam) { 
    PostQuitMessage (0); 
    return 0; 
}