dialogpathprinter.cpp

打印机监视器

//#include "stdafx.h"
#include "DialogPathPrinter.h"
#include "resource.h" 
#include "Logger.h"


IMPLEMENT_MESSAGE_HANDLER(CBaseDialog, CDialogPathAndPrinter)

BEGIN_MESSAGE_MAP(CDialogPathAndPrinter)
	ADD_MESSAGE_HANDLER(WM_COMMAND, On_WM_COMMAND)
	ADD_MESSAGE_HANDLER(WM_INITDIALOG, OnInitDialog)
END_MESSAGE_MAP()

CDialogPathAndPrinter::CDialogPathAndPrinter(int nResId, HWND hParent) : CBaseDialog(nResId, hParent)
{
	sPrinterNamePhysics[0]=0;
	sPath[0]=0;
	ENABLE_MESSAGE_MAP();
}

CDialogPathAndPrinter::~CDialogPathAndPrinter()
{
}

void CDialogPathAndPrinter::On_WM_COMMAND(HWND hDlg, WPARAM wParam, LPARAM lParam)
{
	switch (LOWORD(wParam)) 
	{ 
		case IDC_BUTTON_BROWSE_PATH:
		{
			BROWSEINFO bi;

			bi.hwndOwner=NULL;
			bi.pidlRoot=NULL;
			TCHAR buf[MAX_PATH];
			bi.pszDisplayName=buf;
			bi.lpszTitle=_T("您好大侠，请选择输出的目录:");
			bi.ulFlags=BIF_RETURNONLYFSDIRS;
			bi.lpfn=NULL;
			bi.lParam=0;
			int iImage=0;
			bi.iImage=iImage;

			ITEMIDLIST *pidl=SHBrowseForFolder(&bi);


			if(pidl)//user did not cancel
			{
				SHGetPathFromIDList(pidl,sPath);
				HWND hwndPath=GetDlgItem(hDlg, IDC_EDIT_PATH);
				::SetWindowText(hwndPath,sPath);


				IMalloc *pMalloc;
				SHGetMalloc(&pMalloc);

				pMalloc->Free(pidl);
				pMalloc->Release();
			}

		}
		break;
	case IDC_COMBO_PRINTER: 
		break;
	case IDOK:
		{
		
			HWND hwndPath=GetDlgItem(hDlg, IDC_EDIT_PATH);
			GetWindowText(hwndPath,sPath,100);
			HWND hwndCombo=GetDlgItem(hDlg, IDC_COMBO_PRINTER);
			GetWindowText(hwndCombo,sPrinterNamePhysics,100);
			if(sPrinterNamePhysics[0]==0)
			{
				SendMessage(hwndCombo, LB_GETTEXT, 
					SendMessage(hwndCombo, LB_GETCURSEL, 0, 0), 
					(LPARAM) sPrinterNamePhysics);
			}
			OnOK();
		}
		break;
	case IDCANCEL:
		
		OnCancel();
	}


}


void CDialogPathAndPrinter::OnInitDialog(HWND hDlg, WPARAM wParam, LPARAM lParam)
{


	DWORD				dwSizeNeeded;
	DWORD				dwNumItems;
	DWORD				dwItem;
	LPPRINTER_INFO_2		lpInfo = NULL;
//	TCHAR s[1000];
	// Get buffer size
	EnumPrinters ( PRINTER_ENUM_LOCAL, NULL, 2, NULL, 0, &dwSizeNeeded, &dwNumItems );
//	Error(formatLastError(s));

	// allocate memory
	lpInfo = (LPPRINTER_INFO_2)HeapAlloc ( GetProcessHeap (), HEAP_ZERO_MEMORY, dwSizeNeeded );
	if ( lpInfo == NULL )
	{
		Error(_T("无法为枚举打印机分配内存，枚举失败"));
		return ;

	}

	if ( EnumPrinters ( PRINTER_ENUM_LOCAL,		// what to enumerate
		NULL,			// printer name (NULL for all)
		2,				// level
		(LPBYTE)lpInfo,		// buffer
		dwSizeNeeded,		// size of buffer
		&dwSizeNeeded,		// returns size
		&dwNumItems			// return num. items
		) == 0 )
	{
		// free memory
		HeapFree ( GetProcessHeap (), 0, lpInfo );
		return ;
	}


	HWND hwndCombo=GetDlgItem(m_hWnd, IDC_COMBO_PRINTER);
	if(hwndCombo!=NULL&&dwNumItems>0)
	{

		SendMessage(hwndCombo, CB_RESETCONTENT, 0, 0); 
		// display printers 
		for ( dwItem = 0; dwItem < dwNumItems; dwItem++ )
		{

			SendMessage(hwndCombo, CB_ADDSTRING, 
				0, (LPARAM) lpInfo[dwItem].pPrinterName); 
		}
		SendMessage(hwndCombo, WM_SETTEXT, 0, (LPARAM) lpInfo[0].pPrinterName); 
	}
	// free memory
	HeapFree ( GetProcessHeap (), 0, lpInfo );




}