商业编程-源码-对话框源代码 FileExportDialog_demo.zip

//**************************************************************************** // N O L D U S I N F O R M A T I O N T E C H N O L O G Y B . V . //**************************************************************************** // Filename: CFileExportDialog.cpp // Project: EthoVision // Module: Visualization // Programmer: Anneke Sicherer-Roetman // Version: 1.00 // Revision Date: 22-03-1999 //**************************************************************************** // Description: Definition of class CFileExportDialog // See CFileExportDialog.h //**************************************************************************** // Revision history: // 22-03-1999 - First implementation //**************************************************************************** // Bugs: ........ //**************************************************************************** // @doc //**************************************************************************** #include "stdafx.h" #include <dlgs.h> #include "FileExportDialog.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif // helper functions, defined at end int Split(char *str,char *word[],int max,char c); char *newdup(const char *str); IMPLEMENT_DYNAMIC(CFileExportDialog, FILEEXPORTDIALOG_BASECLASS) //**************************************************************************** // Function CFileExportDialog::CFileExportDialog // @mfunc constructor, creates dialog title and filter buffers // @parm const CString | &title | dialog title // @parm const CString | &filter | file filter<nl> // The filter MUST be of the form "Word File (*.doc)\|Text File (*.txt)"<nl> // .i.e one extension per format and the formats separated by pipes. // @parm const CString | &fileName | initial filename (default "")<nl> // The initial filetype is determined from this filename if given. // @xref <c CFileExportDialog> //**************************************************************************** // @prog // Anneke Sicherer-Roetman // @revs // 22-03-1999 - First implementation //**************************************************************************** // @todo //**************************************************************************** CFileExportDialog::CFileExportDialog(const CString &title, const CString &filter, const CString &fileName /* = "" */) : base(false, "", fileName), // if filter is "" (not NULL), an extension is added automatically! m_pTitleBuffer(NULL), m_pFilterBuffer(NULL), m_pFileBuffer(NULL), m_CurrentFilterIndex(1) { // set dialog title m_pTitleBuffer = newdup(title); m_ofn.lpstrTitle = m_pTitleBuffer; // construct filter string for standard file open dialog char *tempBuffer = newdup(filter); char *word[40]; // maximum of 40 file types // split original filter string on pipes int n = Split(tempBuffer,word,20,'|'); char **fptr = new char *[n]; // note: pointers into tempBuffer // create new filter string m_pFilterBuffer = new char[filter.GetLength()+n*8+1]; m_pFilterBuffer[0]='\0'; // fill new filter string for (int i = 0; i < n; ++i) { // copy format description and add pipe strcat(m_pFilterBuffer,word[i]); strcat(m_pFilterBuffer,"|"); // extract filter from format description char *part1[2]; int m = Split(word[i],part1,2,'('); ASSERT(m == 2); char *part2[2]; m = Split(part1[1],part2,2,')'); ASSERT((m == 1 || m == 2) && !strncmp(part2[0],"*.",2)); // add filter and add pipe strcat(m_pFilterBuffer,part2[0]); strcat(m_pFilterBuffer,"|"); // remember filter for later usage fptr[i] = part2[0]+1; } // replace pipes by nul characters int l = strlen(m_pFilterBuffer); for (i = 0; i < l; ++i) if (m_pFilterBuffer[i] == '|') m_pFilterBuffer[i] = '\0'; // set filter string m_ofn.lpstrFilter = m_pFilterBuffer; // set default filename in dialog m_pFileBuffer = new char[256]; m_ofn.lpstrFile = m_pFileBuffer; m_ofn.nMaxFile = 256; if (fileName.IsEmpty()) { sprintf(m_pFileBuffer, "*%s",fptr[0]); } else { strcpy(m_pFileBuffer, fileName); } // set filter index from default filename m_ofn.nFilterIndex = m_CurrentFilterIndex = 1; if (fileName.IsEmpty()) { } else { char *ext = strchr(LPCSTR(fileName),'.'); if (ext) { for (int i = 0; i < n; ++i) if (!strcmp(ext, fptr[i])) { m_ofn.nFilterIndex = m_CurrentFilterIndex = i + 1; break; } } } // free temporary buffers delete tempBuffer; delete [] fptr; } //**************************************************************************** // Function CFileExportDialog::~CFileExportDialog // @mfunc destructor, destroys dialog title and filter buffers // @xref <c CFileExportDialog> //**************************************************************************** // @prog // Anneke Sicherer-Roetman // @revs // 22-03-1999 - First implementation //**************************************************************************** // @todo //**************************************************************************** CFileExportDialog::~CFileExportDialog() { delete [] m_pTitleBuffer; delete [] m_pFilterBuffer; delete [] m_pFileBuffer; } //**************************************************************************** // Function CFileExportDialog::OnTypeChange // @mfunc called when user selects other filetype, changes filename extension // @rdesc nothing // @xref <c CFileExportDialog> //**************************************************************************** // @prog // Anneke Sicherer-Roetman<nl> // programmed after Christian Skovdal Andersen<nl> // http://www.codeguru.com/dialog/cmdlg.shtml // @revs // 22-03-1999 - First implementation //**************************************************************************** // @todo //**************************************************************************** void CFileExportDialog::OnTypeChange() { // get current filename CWnd *fileNameBox = GetParent()->GetDlgItem(edt1); ASSERT_VALID(fileNameBox); CString fileName; fileNameBox->GetWindowText(fileName); // get current extension CWnd *typeNameBox = GetParent()->GetDlgItem(cmb1); ASSERT_VALID(typeNameBox); CString typeName; typeNameBox->GetWindowText(typeName); char *tempBuffer = newdup(typeName); char *ptr[2]; int n = Split(tempBuffer, ptr, 2, '*'); ASSERT(n == 2); n = Split(ptr[1], ptr, 2, ')'); ASSERT(n == 1); typeName = ptr[0]; // add or substute new extension in current filename if (fileName.IsEmpty()) { fileName = "*" + typeName; } else { int index = fileName.Find('.'); if (index == -1) { fileName = fileName + typeName; } else { fileName = fileName.Left(index) + typeName; } } fileNameBox->SetWindowText(fileName); // get current filter index m_CurrentFilterIndex = ((CComboBox *)typeNameBox)->GetCurSel() + 1; // free temporary buffer delete tempBuffer; } //**************************************************************************** // MessageMap: CFileExportDialog // Programmer: Anneke Sicherer-Roetman // Revision history: // 22-03-1999 - First implementation //**************************************************************************** BEGIN_MESSAGE_MAP(CFileExportDialog, base) //{{AFX_MSG_MAP(CFileExportDialog) //}}AFX_MSG_MAP END_MESSAGE_MAP() //**************************************************************************** // Function Split // @func splits string on separators // @rdesc number of substrings found (int) // @parm char | *str | source string // @parm char | *word[] | pointers to