printit.cpp

《Windows CE 权威指南》（作者：(美)CHRIS MUENCH

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

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

// <BOOK_ADDON Chapter 7.7> *******************************************
#include <commdlg.h>
// </BOOK_ADDON Chapter 7.7> *******************************************

#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;

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

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

	// 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_PRINTIT));
    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_PRINTIT, szWindowClass, MAX_LOADSTRING);
	MyRegisterClass(hInstance, szWindowClass);

	LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
	hWnd = CreateWindow(szWindowClass, szTitle, WS_VISIBLE,
		0, 0, 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)
{

// <BOOK_ADDON Chapter 7.7> *******************************************
	PAGESETUPDLG pd;
	HDC hDC;
	LPDEVNAMES pDevNames;
	DOCINFO pDoc;
	RECT rect;
	LPTSTR pDriver,pDevice,pOutput;
	PBYTE pOff;
	LOGFONT	MainFontRec; 
	HFONT		hnewsfont,oldf;
// </BOOK_ADDON Chapter 7.7> *******************************************

	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;
// <BOOK_ADDON Chapter 7.7> *******************************************
				case ID_PRINT:
					// Initialize PAGESETUPDLG
					memset(&pd, 0,sizeof(PAGESETUPDLG));
					pd.lStructSize = sizeof(PAGESETUPDLG);
					pd.hwndOwner   = hWnd;
					pd.hDevMode    = NULL;      
					pd.hDevNames   = NULL;      
					pd.Flags       = PSD_INTHOUSANDTHSOFINCHES | PSD_MARGINS; 
				
					if (PageSetupDlg(&pd)==TRUE) 
					{
						pDevNames=(LPDEVNAMES)pd.hDevNames;
						pOff=(PBYTE)pDevNames;
						pDriver=(LPTSTR)(pOff+pDevNames->wDriverOffset);
						pDevice=(LPTSTR)(pOff+pDevNames->wDeviceOffset);
						pOutput=(LPTSTR)(pOff+pDevNames->wOutputOffset);
						hDC=CreateDC((LPCTSTR)pDriver,
									 (LPCTSTR)pDevice,
									 (LPCTSTR)pOutput,
									 NULL); //(LPDEVMODE)pd.hDevMode);
						// GDI calls to render output. 
						if (hDC)
						{
							memset(&pDoc, 0,sizeof(DOCINFO));
							pDoc.cbSize= sizeof(DOCINFO);
							pDoc.lpszDocName=TEXT("My First Printed Document");
							StartDoc(hDC,&pDoc);
							StartPage(hDC);
								rect.bottom=500;
								rect.top=50;
								rect.left=50;
								rect.right=500;
					    		memset(&MainFontRec, 0,sizeof(LOGFONT));
					    		MainFontRec.lfHeight = -200;
				  	    	MainFontRec.lfWidth = 30;
					    		MainFontRec.lfWeight = FW_NORMAL;
					    		MainFontRec.lfCharSet = ANSI_CHARSET;
					    		MainFontRec.lfOutPrecision = OUT_DEFAULT_PRECIS;
					    		MainFontRec.lfClipPrecision = CLIP_DEFAULT_PRECIS;
					    		MainFontRec.lfQuality = DEFAULT_QUALITY;
					    		MainFontRec.lfPitchAndFamily = VARIABLE_PITCH | FF_ROMAN;
					    		wsprintf(MainFontRec.lfFaceName,L"Tahoma");
								hnewsfont =CreateFontIndirect(&MainFontRec);
				  				oldf=(HFONT)SelectObject(hDC, hnewsfont);
				
							DrawText(hDC,TEXT("A printer Test"),14,&rect,DT_CENTER);
							SelectObject(hDC,oldf); 
							EndPage(hDC);
							EndDoc(hDC);
							DeleteDC(hDC);
						}
						if (pd.hDevMode)
							free (pd.hDevMode);
						if (pd.hDevNames)
							free (pd.hDevNames);						
					}
				break;
// </BOOK_ADDON Chapter 7.7> *******************************************
				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)
{
	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);
			}
			return TRUE;

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