inkit.cpp

《Windows CE 权威指南》（作者：(美)CHRIS MUENCH

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

#include "stdafx.h"
#include "InkIt.h"
#include <commctrl.h>

// <BOOK_ADDON Chapter 7.10.1>	**********************************************
#include <inkx.h>
// </BOOK_ADDON Chapter 7.10.1> **********************************************

#define MAX_LOADSTRING 100

// Global Variables:
HINSTANCE			hInst;			// The current instance
HWND				hwndCB;			// The command bar handle

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

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

// <BOOK_ADDON Chapter 7.10.1> **********************************************
	InitCommonControls();
	InitInkX();
// </BOOK_ADDON Chapter 7.10.1> **********************************************
	// Perform application initialization:
	if (!InitInstance (hInstance, nCmdShow)) 
	{
		return FALSE;
	}

	hAccelTable = LoadAccelerators(hInstance, (LPCTSTR)IDC_INKIT);

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

	return msg.wParam;
}

//
//  FUNCTION: MyRegisterClass()
//
//  PURPOSE: Registers the window class.
//
//  COMMENTS:
//
//    This function and its usage is only necessary if you want this code
//    to be compatible with Win32 systems prior to the 'RegisterClassEx'
//    function that was added to Windows 95. It is important to call this function
//    so that the application will get 'well formed' small icons associated
//    with it.
//
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_INKIT));
    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;
	TCHAR	szTitle[MAX_LOADSTRING];			// The title bar text
	TCHAR	szWindowClass[MAX_LOADSTRING];		// The window class name

	hInst = hInstance;		// Store instance handle in our global variable
	// Initialize global strings
	LoadString(hInstance, IDC_INKIT, szWindowClass, MAX_LOADSTRING);
	MyRegisterClass(hInstance, szWindowClass);

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

	if (!hWnd)
	{	
		return FALSE;
	}

	ShowWindow(hWnd, nCmdShow);
	UpdateWindow(hWnd);
	if (hwndCB)
		CommandBar_Show(hwndCB, TRUE);

	return TRUE;
}

//
//  FUNCTION: WndProc(HWND, unsigned, WORD, LONG)
//
//  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)
{
	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:
				   DialogBox(hInst, (LPCTSTR)IDD_ABOUTBOX, hWnd, (DLGPROC)About);
				   break;
				case IDM_FILE_EXIT:
				   DestroyWindow(hWnd);
				   break;
				default:
				   return DefWindowProc(hWnd, message, wParam, lParam);
			}
			break;
		case WM_CREATE:
			hwndCB = CommandBar_Create(hInst, hWnd, 1);			
			CommandBar_InsertMenubar(hwndCB, hInst, IDM_MENU, 0);
			CommandBar_AddAdornments(hwndCB, 0, 0);
			break;
		case WM_PAINT:
			RECT rt;
			hdc = BeginPaint(hWnd, &ps);
			GetClientRect(hWnd, &rt);
			LoadString(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(hwndCB);
			PostQuitMessage(0);
			break;
		default:
			return DefWindowProc(hWnd, message, wParam, lParam);
   }
   return 0;
}

// Mesage handler for the About box.
LRESULT CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
// <BOOK_ADDON Chapter 7.10.1>	**********************************************
	DWORD lBlobLen;
	BYTE *inkBlob;
// </BOOK_ADDON Chapter 7.10.1>	**********************************************

	RECT rt, rt1;
	int DlgWidth, DlgHeight;	// dialog width and height in pixel units
	int NewPosX, NewPosY;

	switch (message)
	{
		case WM_INITDIALOG:
			// trying to center the About dialog
			if (GetWindowRect(hDlg, &rt1)) {
				GetClientRect(GetParent(hDlg), &rt);
				DlgWidth	= rt1.right - rt1.left;
				DlgHeight	= rt1.bottom - rt1.top ;
				NewPosX		= (rt.right - rt.left - DlgWidth)/2;
				NewPosY		= (rt.bottom - rt.top - DlgHeight)/2;
				
				// if the About box is larger than the physical screen 
				if (NewPosX < 0) NewPosX = 0;
				if (NewPosY < 0) NewPosY = 0;
				SetWindowPos(hDlg, 0, NewPosX, NewPosY,
					0, 0, SWP_NOZORDER | SWP_NOSIZE);
			}
// <BOOK_ADDON Chapter 7.10.1b>	**********************************************
#define IDC_POSTSETUP WM_USER + 127
				PostMessage(hDlg, WM_COMMAND, MAKELONG(IDC_POSTSETUP,IDC_POSTSETUP), IDC_POSTSETUP);
// </BOOK_ADDON Chapter 7.10.1b>	**********************************************
			return TRUE;

		case WM_COMMAND:
// <BOOK_ADDON Chapter 7.10.1b>	**********************************************
			if (LOWORD(wParam) == IDC_POSTSETUP)
			{
				HWND 	hwndInk,hwndCB, hwndSB, hwndRI;
				RECT	rc;
			
				hwndInk=GetDlgItem(hDlg, IDC_CUSTOM1);
				// The commandbar of the InK Ctrl is Child 1
				hwndCB = GetWindow(hwndInk, GW_CHILD);
				// The scrollbar of the Ink Ctrl is Child 2
				hwndSB = GetWindow(hwndCB, GW_HWNDNEXT);
				// The main window (richink) is Child 3
				hwndRI = GetWindow(hwndSB, GW_HWNDNEXT);
			
				// simply hide what you dont like
				ShowWindow(hwndCB, SW_HIDE);
				ShowWindow(hwndSB, SW_HIDE);
			
				// resize RI window to be the same size as hwnd
				GetClientRect(hwndInk, &rc);
				InflateRect(&rc, -2, -2);
				SetWindowPos(hwndRI, hwndInk,rc.left, rc.top, 
			                   rc.right - rc.left + 1, rc.bottom - rc.top + 1,
			                   SWP_NOZORDER);
				ShowWindow(hwndInk, SW_SHOW);
				break;
			}
// </BOOK_ADDON Chapter 7.10.1b>	**********************************************
			if ((LOWORD(wParam) == IDOK) || (LOWORD(wParam) == IDCANCEL))
			{
// <BOOK_ADDON Chapter 7.10.1>	**********************************************
				if (LOWORD(wParam) == IDOK)
				{
					//Get the length of the ink data blob
					lBlobLen = SendDlgItemMessage(hDlg, 
			                         IDC_CUSTOM1, IM_GETDATALEN, 0, 0L);
					if (lBlobLen == 0)
					{
						//Nothing in the control
						EndDialog(hDlg, 0);
						return TRUE;
					}
							
					//Allocate object pData
					inkBlob = (PBYTE) LocalAlloc(LMEM_FIXED, lBlobLen);
					if (!inkBlob)	return FALSE;
			
					//Retrieve ink data blob and store it in inkBlob.
					SendDlgItemMessage(hDlg, IDC_CUSTOM1, 
			                          IM_GETDATA, lBlobLen, (LPARAM)inkBlob);
			
					// ... Do Something with the inkBlob 
				}
// </BOOK_ADDON Chapter 7.10.1>	**********************************************
				EndDialog(hDlg, LOWORD(wParam));
				return TRUE;
			}
			break;
	}
    return FALSE;
}