cechat.cpp

Win CE 下的EVC串口聊天工具,附源码

//======================================================================
// CeChat - A Windows CE communication demo
//
// Written for the book Programming Windows CE
// Copyright (C) 2003 Douglas Boling
//======================================================================
#include <windows.h>				 // For all that Windows stuff
#include <commctrl.h>				 // Command bar includes
#include "CeChat.h" 				 // Program-specific stuff

#if defined(WIN32_PLATFORM_PSPC)
#include <aygshell.h>				 // Add Pocket PC includes.
#pragma comment( lib, "aygshell" )	 // Link Pocket PC lib for menu bar.
#endif
//----------------------------------------------------------------------
// Global data
//
const TCHAR szAppName[] = TEXT ("CeChat");
HINSTANCE hInst;					 // Program instance handle.

BOOL fContinue = TRUE;
HANDLE hComPort = INVALID_HANDLE_VALUE;
int nSpeed = CBR_19200;
int nLastDev = -1;

#if defined(WIN32_PLATFORM_PSPC) && (_WIN32_WCE >= 300)
SHACTIVATEINFO sai;
#endif

HANDLE g_hSendEvent = INVALID_HANDLE_VALUE;
HANDLE hReadThread = INVALID_HANDLE_VALUE;

// Message dispatch table for MainWindowProc
const struct decodeUINT MainMessages[] = {
	WM_CREATE, DoCreateMain,
	WM_SIZE, DoSizeMain,
	WM_COMMAND, DoCommandMain,
	WM_SETTINGCHANGE, DoPocketPCShell,
	WM_ACTIVATE, DoPocketPCShell,
	WM_SETFOCUS, DoSetFocusMain,
	WM_DESTROY, DoDestroyMain,
};
// Command Message dispatch for MainWindowProc
const struct decodeCMD MainCommandItems[] = {
	IDC_COMPORT, DoMainCommandComPort,
	ID_SENDBTN, DoMainCommandSendText,
	IDM_EXIT, DoMainCommandExit,
	IDM_ABOUT, DoMainCommandAbout,
};
//======================================================================
// Program entry point
//
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
					LPWSTR lpCmdLine, int nCmdShow) {
	HWND hwndMain;
	HACCEL hAccel;
	MSG msg;
	int rc = 0;

	// Initialize this instance.
	hwndMain = InitInstance (hInstance, lpCmdLine, nCmdShow);
	if (hwndMain == 0)
		return 0x10;

	// Load accelerator table.
	hAccel = LoadAccelerators (hInst, MAKEINTRESOURCE (ID_ACCEL));

	// Application message loop
	while (GetMessage (&msg, NULL, 0, 0)) {
		if (!TranslateAccelerator (hwndMain, hAccel, &msg)) {
			TranslateMessage (&msg);
			DispatchMessage (&msg);
		}
	}
	// Instance cleanup
	return TermInstance (hInstance, msg.wParam);
}
//----------------------------------------------------------------------
// InitInstance - Instance initialization
//
HWND InitInstance (HINSTANCE hInstance, LPWSTR lpCmdLine, int nCmdShow){
	HWND hWnd;
	HANDLE hThread;
	WNDCLASS wc;
	INITCOMMONCONTROLSEX icex;

	// Save program instance handle in global variable.
	hInst = hInstance;

#if defined(WIN32_PLATFORM_PSPC)
	// If Pocket PC, allow only one instance of the application.
	HWND hWnd = FindWindow (szAppName, NULL);
	if (hWnd) {
		SetForegroundWindow ((HWND)(((DWORD)hWnd) | 0x01));    
		return 0;
	}
#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;

	// Load the command bar common control class.
	icex.dwSize = sizeof (INITCOMMONCONTROLSEX);
	icex.dwICC = ICC_BAR_CLASSES;
	InitCommonControlsEx (&icex);

	// Create unnamed auto-reset event initially false.
	g_hSendEvent = CreateEvent (NULL, FALSE, FALSE, NULL);

	// Create main window.
	hWnd = CreateWindow (szAppName, TEXT ("CeChat"),
						 WS_VISIBLE, CW_USEDEFAULT, CW_USEDEFAULT,
						 CW_USEDEFAULT, CW_USEDEFAULT, NULL,
						 NULL, hInstance, NULL);
	// Return fail code if window not created.
	if (!IsWindow (hWnd)) return 0;

	// Create write thread. Read thread created when port opened.
	hThread = CreateThread (NULL, 0, SendThread, hWnd, 0, NULL);
	if (hThread)
		CloseHandle (hThread);
	else {
		DestroyWindow (hWnd);
		return 0;
	}
	// Standard show and update calls
	ShowWindow (hWnd, nCmdShow);
	UpdateWindow (hWnd);
	return hWnd;
}
//----------------------------------------------------------------------
// TermInstance - Program cleanup
//
int TermInstance (HINSTANCE hInstance, int nDefRC) {
	HANDLE hPort = hComPort;

	fContinue = FALSE;

	hComPort = INVALID_HANDLE_VALUE;
	if (hPort != INVALID_HANDLE_VALUE)
		CloseHandle (hPort);

	if (g_hSendEvent != INVALID_HANDLE_VALUE) {
		PulseEvent (g_hSendEvent);
		Sleep(100);
		CloseHandle (g_hSendEvent);
	}
	return nDefRC;
}
//======================================================================
// Message handling procedures for MainWindow
//----------------------------------------------------------------------
// 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);
}
//----------------------------------------------------------------------
// DoCreateMain - Process WM_CREATE message for window.
//
LRESULT DoCreateMain (HWND hWnd, UINT wMsg, WPARAM wParam,
					  LPARAM lParam) {
	HWND hwndCB, hC1, hC2, hC3;
	int  i;
	TCHAR szFirstDev[32];
	LPCREATESTRUCT lpcs = (LPCREATESTRUCT) lParam;

#if defined(WIN32_PLATFORM_PSPC) && (_WIN32_WCE >= 300)
	memset (&sai, 0, sizeof (sai));
	sai.cbSize = sizeof (sai);
	{
	SHMENUBARINFO mbi;						// For Pocket PC, create
	memset(&mbi, 0, sizeof(SHMENUBARINFO)); // menu bar so that we
	mbi.cbSize = sizeof(SHMENUBARINFO); 	// have a sip button.
	mbi.hwndParent = hWnd;
	mbi.dwFlags = SHCMBF_EMPTYBAR;
	SHCreateMenuBar(&mbi);
	SetWindowPos (hWnd, 0, 0, 0, lpcs->cx, lpcs->cy-26, 
				  SWP_NOZORDER | SWP_NOMOVE);
	}
#endif	  
   
   // Create a command bar.
	hwndCB = CommandBar_Create (hInst, hWnd, IDC_CMDBAR);
	CommandBar_InsertMenubar (hwndCB, hInst, ID_MENU, 0);

	// Insert the COM port combo box.
	CommandBar_InsertComboBox (hwndCB, hInst, 140, CBS_DROPDOWNLIST,
							   IDC_COMPORT, 1);
	FillComComboBox (hWnd);

	// Add exit button to command bar.
	CommandBar_AddAdornments (hwndCB, 0, 0);

	// Create child windows. They will be positioned in WM_SIZE.
	// Create receive text window.
	hC1 = CreateWindowEx (WS_EX_CLIENTEDGE, TEXT ("edit"),
						  TEXT (""), WS_VISIBLE | WS_CHILD |
						  WS_VSCROLL | ES_MULTILINE | ES_AUTOHSCROLL |
						  ES_READONLY, 0, 0, 10, 10, hWnd,
						  (HMENU)ID_RCVTEXT, hInst, NULL);
	// Create send text window.
	hC2 = CreateWindowEx (WS_EX_CLIENTEDGE, TEXT ("edit"),
						  TEXT (""), WS_VISIBLE | WS_CHILD,
						  0, 0, 10, 10,  hWnd, (HMENU)ID_SENDTEXT, 
							 hInst, NULL);
	// Create send text window.
	hC3 = CreateWindowEx (WS_EX_CLIENTEDGE, TEXT ("button"),
						  TEXT ("&Send"), WS_VISIBLE | WS_CHILD |
						  BS_DEFPUSHBUTTON, 0, 0, 10, 10,
						  hWnd, (HMENU)ID_SENDBTN, hInst, NULL);
	// Destroy frame if window not created.
	if (!IsWindow (hC1) || !IsWindow (hC2) || !IsWindow (hC3)) {
		DestroyWindow (hWnd);
		return 0;
	}
	// Open a COM port.
	for (i = 0; i < 10; i++) {
		if (SendDlgItemMessage (hwndCB, IDC_COMPORT, CB_GETLBTEXT, i,
							(LPARAM)szFirstDev) == CB_ERR)
			break;
		if (InitCommunication (hWnd, szFirstDev) !=
			INVALID_HANDLE_VALUE) {
			SendDlgItemMessage (hwndCB, IDC_COMPORT, CB_SETCURSEL, i,
								(LPARAM)szFirstDev);
			break;
		}
	}
	return 0;
}
//----------------------------------------------------------------------
// DoSizeMain - Process WM_SIZE message for window.
//
LRESULT DoSizeMain (HWND hWnd, UINT wMsg, WPARAM wParam, LPARAM lParam){
	RECT rect;

	// Adjust the size of the client rect to take into account
	// the command bar height.
	GetClientRect (hWnd, &rect);
	rect.top += CommandBar_Height (GetDlgItem (hWnd, IDC_CMDBAR));

	SetWindowPos (GetDlgItem (hWnd, ID_RCVTEXT), NULL, rect.left,
				  rect.top, (rect.right - rect.left),
				  rect.bottom - rect.top - 25, SWP_NOZORDER);
	SetWindowPos (GetDlgItem (hWnd, ID_SENDTEXT), NULL, rect.left,
				  rect.bottom - 25, (rect.right - rect.left) - 50,
				  25, SWP_NOZORDER);
	SetWindowPos (GetDlgItem (hWnd, ID_SENDBTN), NULL,
				  (rect.right - rect.left) - 50, rect.bottom - 25,
				  50, 25, SWP_NOZORDER);
	return 0;
}
//----------------------------------------------------------------------
// DoPocketPCShell - Process Pocket PC required messages.
//
LRESULT DoPocketPCShell (HWND hWnd, UINT wMsg, WPARAM wParam,
						 LPARAM lParam) {
#if defined(WIN32_PLATFORM_PSPC) && (_WIN32_WCE >= 300)
	if (wMsg == WM_SETTINGCHANGE) 
		return SHHandleWMSettingChange(hWnd, wParam, lParam, &sai);
	if (wMsg == WM_ACTIVATE)