selectfolderdialog.cpp

用Ｃ实现的统计一个目录下的所有源程序共有多少行

/*
Original code by : Mihai Filimon
Modifications by S. Sridhar 
1. Added a edit control where the user can type in the path
2. If the path typed in the edit ctrl does not exist then the 
   user will be propmted as to whether he/she wants the path 
   to be created
3. Setting the flag bShowFilesInDir to TRUE will result in all 
   the files in the current folder to be displayed in the dialog
4. If u don't want to display all the files then u can use the 
   file filter to display the file types u want to display
5. Calling API SetTitle with the desired title will set the Title 
   of the dialog. This API has to be invoked before DoModal is called
6. User can pass the Initial Folder to be displayed in the constructor 
   of CSelectFolder

Usage Examples
--------------

CSelectFolderDialog oSelectFolderDialog(FALSE, NULL,
						OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
						NULL, NULL);

CSelectFolderDialog oSelectFolderDialog(FALSE, "c:\\my documents",
						OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
						NULL, NULL);

CSelectFolderDialog oSelectFolderDialog(TRUE, "c:\\my documents",
						OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
						NULL, NULL);

CSelectFolderDialog oSelectFolderDialog(TRUE, "c:\\my documents",
						OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
	"Microsoft Word Documents (*.doc)|*.doc|Microsoft Excel Worksheets (*.xls)|*.xls|", NULL);

CSelectFolderDialog oSelectFolderDialog(TRUE, "c:\\my documents",
						OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
	"HTML Files (*.html, *.htm)|*.html;*.htm||", NULL);
*/

#include "stdafx.h"
#include "SelectFolderDialog.h"
#include <DLGS.H>
#include <WINUSER.H>
#include <IO.H>
#include <imagehlp.h>

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

#define IDLB_FOLDER_DIALOG_FILES		101
#define IDEB_FOLDER_DIALOG_SEL_FOLDER	102

/////////////////////////////////////////////////////////////////////////////
// CSelectFolderDialog

IMPLEMENT_DYNAMIC(CSelectFolderDialog, CFileDialog)

WNDPROC CSelectFolderDialog::m_wndProc = NULL;


CSelectFolderDialog::CSelectFolderDialog(
						BOOL bShowFilesInDir /*= FALSE*/, 
						LPCSTR lpcstrInitialDir /*= NULL*/, 
						DWORD dwFlags /*= OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT*/,
						LPCTSTR lpszFilter /*= NULL*/, 
						CWnd* pParentWnd /*= NULL*/)
					: CFileDialog(TRUE, NULL, 
					(bShowFilesInDir)? ((lpszFilter)? NULL : "*.*") : _T("*..*"), 
									dwFlags, lpszFilter, pParentWnd)
{
	if(lpcstrInitialDir)
		m_ofn.lpstrInitialDir = lpcstrInitialDir;
	
	m_bShowFilesInDir = bShowFilesInDir;

	m_pEdit = NULL;

	m_cstrTitle = "Select folder";
}

CSelectFolderDialog::~CSelectFolderDialog()
{
	if(m_pEdit)
		delete m_pEdit;
}

BEGIN_MESSAGE_MAP(CSelectFolderDialog, CFileDialog)
	//{{AFX_MSG_MAP(CSelectFolderDialog)
		// NOTE - the ClassWizard will add and remove mapping macros here.
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

// Function name	: WindowProcNew
// Description	    : Call this function when user navigate into CFileDialog.
// Return type		: LRESULT
// Argument         : HWND hwnd
// Argument         : UINT message
// Argument         : WPARAM wParam
// Argument         : LPARAM lParam
LRESULT CALLBACK WindowProcNew(HWND hwnd,UINT message, WPARAM wParam, LPARAM lParam)
{
	if(message ==  WM_COMMAND)
	{
		if (HIWORD(wParam) == BN_CLICKED)
		{
			if (LOWORD(wParam) == IDOK)
			{
				if (CFileDialog* pDlg = (CFileDialog*)CWnd::FromHandle(hwnd))
				{
					CString cstrPath;
					((CSelectFolderDialog*)pDlg->GetDlgItem(
						IDEB_FOLDER_DIALOG_SEL_FOLDER))->GetWindowText(cstrPath);
					
					//If there is nothing entered in the IDEB_FOLDER_DIALOG_SEL_FOLDER
					//Then use the current sel folder
					if(cstrPath.GetLength() == 0)
						cstrPath = ((CSelectFolderDialog*)pDlg->GetDlgItem(0))->GetFolderPath();

					if(cstrPath.GetLength() == 0)
					{
						AfxMessageBox("Invalid Folder", MB_OK | MB_ICONHAND);
						return 1;
					}

					//If the user has entered something like "c:\\windows\\\\system"
					//this is invalid but _access returns valid if this string is passed to
					//it. So before giving it to _access validate it.
					for (int i = 0; i < cstrPath.GetLength() - 1; i++)
						if (cstrPath[i] == '\\' && cstrPath[i+1] == '\\')
						{
							AfxMessageBox("Invalid Folder", MB_OK | MB_ICONHAND);
							return NULL;
						}
					
					//If user has entered a trailing backslash remove it
					//e.g. "c:\\windows\\system\\" --> "c:\\windows\\system"
					if (cstrPath[i] == '\\')
						cstrPath = cstrPath.Left (cstrPath.GetLength() - 1);

					//If path does not exist
					if(_access(cstrPath, 00) != 0)
					{
						if(AfxMessageBox(cstrPath + "\n" + "\n" +
							"This path does not exist. Do you want to create it?",
							MB_YESNO | MB_ICONQUESTION) == IDYES)
						{
							MakeSureDirectoryPathExists(cstrPath + "\\");
							if(_access(cstrPath, 00) != 0)
							{
								AfxMessageBox((CString)"Could not create folder:" + "\n" + cstrPath);
								return NULL;
							}
						}
					}

					((CSelectFolderDialog*)pDlg->GetDlgItem(0))->SetSelectedPath(cstrPath + "\\");

					pDlg->EndDialog(IDOK);

					return NULL;
				}
			}
		}
	}

	return CallWindowProc(CSelectFolderDialog::m_wndProc, hwnd, message, wParam, lParam);
}

// Function name	: CSelectFolderDialog::OnInitDone
// Description	    : For update the wiew of CFileDialog
// Return type		: void 
void CSelectFolderDialog::OnInitDone()
{
	HideControl(edt1);

	CWnd* pFD = GetParent();
	CRect rectCancelPB; pFD->GetDlgItem(IDCANCEL)->GetWindowRect(rectCancelPB);
	pFD->ScreenToClient(rectCancelPB);
	CRect rectOKPB; pFD->GetDlgItem(IDOK)->GetWindowRect(rectOKPB);
	pFD->ScreenToClient(rectOKPB);
	pFD->GetDlgItem(IDOK)->SetWindowPos(0,rectCancelPB.left - rectOKPB.Width() - 4, rectCancelPB.top, 0,0, SWP_NOZORDER | SWP_NOSIZE);
	CRect rectList2LC; pFD->GetDlgItem(lst1)->GetWindowRect(rectList2LC);
	pFD->ScreenToClient(rectList2LC);
	
	pFD->GetDlgItem(lst1)->SetWindowPos(0,0,0,rectList2LC.Width(), abs(rectList2LC.top - (rectCancelPB.top - 45)) + 25, SWP_NOMOVE | SWP_NOZORDER);
	
	//SetControlText(IDOK, _T("Select"));
	pFD->SetWindowText(_T(m_cstrTitle));
	m_wndProc = (WNDPROC)SetWindowLong(pFD->m_hWnd, GWL_WNDPROC, (long)WindowProcNew);

	CRect rectstc3ST; 
	pFD->GetDlgItem(stc3)->GetWindowRect(rectstc3ST);
	pFD->ScreenToClient(rectstc3ST);
	pFD->GetDlgItem(stc3)->SetWindowText("Current Folder:");
	pFD->GetDlgItem(stc3)->SetWindowPos(0, rectstc3ST.left, rectstc3ST.top + 14, rectstc3ST.Width() + 50, rectstc3ST.Height(), SWP_NOZORDER);

	CRect rectCurrFolderEB;
	pFD->GetDlgItem(edt1)->GetWindowRect(rectCurrFolderEB);
	pFD->ScreenToClient(rectCurrFolderEB);
	rectCurrFolderEB.left = rectstc3ST.left;
	rectCurrFolderEB.right -= 70;
	rectCurrFolderEB.top += 30;
	rectCurrFolderEB.bottom += 30;

	m_pEdit = new CEdit();
	m_pEdit->Create(WS_TABSTOP | WS_VISIBLE | WS_CHILD, 
					rectCurrFolderEB, pFD, IDEB_FOLDER_DIALOG_SEL_FOLDER);
	m_pEdit->SetWindowText(m_ofn.lpstrInitialDir);
	m_pEdit->SetFont(pFD->GetDlgItem(edt1)->GetFont());
	
	//Draw the thick sunkun edge
	m_pEdit->ModifyStyleEx(0, WS_EX_CLIENTEDGE, SWP_DRAWFRAME);
	
	//Set the Tab order after the Folders Listbox
	m_pEdit->SetWindowPos(pFD->GetDlgItem(lst1), 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);

	if(!m_bShowFilesInDir || (m_ofn.lpstrFilter == NULL) || (strlen(m_ofn.lpstrFilter) == 0))
	{
		//File Types Static text and Combo box
		HideControl(stc2);
		HideControl(cmb1);
	}
	
	if(m_bShowFilesInDir && (m_ofn.lpstrFilter != NULL) && (strlen(m_ofn.lpstrFilter) != 0))
	{
		//Increase the height of the dialog
		CRect rectDialog;
		pFD->GetWindowRect(rectDialog);
		rectDialog.bottom += 35;
		pFD->SetWindowPos(0, 0, 0, rectDialog.Width(), rectDialog.Height(), SWP_NOZORDER | SWP_NOMOVE);

		CRect rectST;
		pFD->GetDlgItem(stc2)->GetWindowRect(rectST);
		pFD->ScreenToClient(rectST);
		rectST.top += 25;
		rectST.bottom += 25;
		pFD->GetDlgItem(stc2)->SetWindowPos(0, rectST.left, rectST.top, 0, 0, SWP_NOZORDER | SWP_NOSIZE);

		CRect rectComboDL;
		pFD->GetDlgItem(cmb1)->GetWindowRect(rectComboDL);
		pFD->ScreenToClient(rectComboDL);
		rectComboDL.left = rectST.left;
		rectComboDL.top = rectST.top + rectST.Height();
		rectComboDL.bottom = rectST.bottom + rectST.Height();
		pFD->GetDlgItem(cmb1)->SetWindowPos(0, rectComboDL.left, rectComboDL.top, 0, 0, SWP_NOZORDER | SWP_NOSIZE);

		pFD->GetDlgItem(IDCANCEL)->GetWindowRect(rectCancelPB);
		pFD->ScreenToClient(rectCancelPB);
		rectCancelPB.top = rectST.bottom - 2;
		rectCancelPB.bottom = rectCancelPB.top + rectCancelPB.Height();
		pFD->GetDlgItem(IDCANCEL)->SetWindowPos(0, rectCancelPB.left, rectCancelPB.top, 0, 0, SWP_NOZORDER | SWP_NOSIZE);

		pFD->GetDlgItem(IDOK)->GetWindowRect(rectOKPB);
		pFD->ScreenToClient(rectOKPB);
		pFD->GetDlgItem(IDOK)->SetWindowPos(0,rectCancelPB.left - rectOKPB.Width() - 4, rectCancelPB.top, 0,0, SWP_NOZORDER | SWP_NOSIZE);

		rectCurrFolderEB.right = rectCancelPB.right;
		m_pEdit->SetWindowPos(pFD->GetDlgItem(lst1), 0, 0, rectCurrFolderEB.Width(), rectCurrFolderEB.Height(), SWP_NOMOVE | SWP_NOZORDER);
	}

	pFD->CenterWindow();
}

void CSelectFolderDialog::OnFolderChange()
{
	if(::IsWindow(GetParent()->m_hWnd))
	{
		m_cstrPath_Shadow = GetFolderPath();
		m_pEdit->SetWindowText(m_cstrPath_Shadow);
	}
}

void CSelectFolderDialog::SetSelectedPath(LPCSTR lpcstrPath)
{
	m_cstrPath = lpcstrPath;
}

CString CSelectFolderDialog::GetSelectedPath() const
{
	return m_cstrPath;
}

void CSelectFolderDialog::SetTitle(CString cstrTitle)
{
	m_cstrTitle = cstrTitle;
}

int CSelectFolderDialog::DoModal()
{
	int iRet = CFileDialog::DoModal();
	if (iRet == IDOK)
		m_cstrPath = m_cstrPath_Shadow;

	m_cstrPath_Shadow.Empty();
	return iRet;
}