修复内存泄漏缺陷
详见ReadMe.txt
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yuanyuanxiang
227
server/2015Remote/InputDlg.cpp
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227
server/2015Remote/InputDlg.cpp
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////////////////////////////////////////////////////////////////
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// MSDN Magazine -- June 2005
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// If this code works, it was written by Paul DiLascia.
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// If not, I don't know who wrote it.
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// Compiles with Visual Studio .NET 2003 (V7.1) on Windows XP. Tab size=3.
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//
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#include "stdafx.h"
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#include "InputDlg.h"
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#ifdef _DEBUG
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#define new DEBUG_NEW
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#endif
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//////////////////
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// Note: Make sure nBufLen is big enough to hold your entire dialog template!
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//
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CDlgTemplateBuilder::CDlgTemplateBuilder(UINT nBufLen)
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{
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m_pBuffer = new WORD[nBufLen];
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m_pNext = m_pBuffer;
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m_pEndBuf = m_pNext + nBufLen;
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}
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CDlgTemplateBuilder::~CDlgTemplateBuilder()
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{
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delete [] m_pBuffer;
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}
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//////////////////
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// Create template (DLGTEMPLATE)
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//
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DLGTEMPLATE* CDlgTemplateBuilder::Begin(DWORD dwStyle, const CRect& rc,
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LPCTSTR text, DWORD dwStyleEx)
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{
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ASSERT(m_pBuffer==m_pNext); // call Begin first and only once!
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DLGTEMPLATE* hdr = (DLGTEMPLATE*)m_pBuffer;
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hdr->style = dwStyle; // copy style..
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hdr->dwExtendedStyle = dwStyleEx; // ..and extended, too
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hdr->cdit = 0; // number of items: zero
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// Set dialog rectangle.
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CRect rcDlg = rc;
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hdr->x = (short)rcDlg.left;
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hdr->y = (short)rcDlg.top;
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hdr->cx = (short)rcDlg.Width();
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hdr->cy = (short)rcDlg.Height();
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// Append trailing items: menu, class, caption. I only use caption.
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m_pNext = (WORD*)(hdr+1);
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*m_pNext++ = 0; // menu (none)
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*m_pNext++ = 0; // dialog class (use standard)
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m_pNext = AddText(m_pNext, text); // append dialog caption
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ASSERT(m_pNext < m_pEndBuf);
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return hdr;
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}
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//////////////////
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// Add dialog item (control).
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//
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void CDlgTemplateBuilder::AddItemTemplate(WORD wType, DWORD dwStyle,
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const CRect& rc, WORD nID, DWORD dwStyleEx)
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{
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ASSERT(m_pNext < m_pEndBuf);
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// initialize DLGITEMTEMPLATE
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DLGITEMTEMPLATE& it = *((DLGITEMTEMPLATE*)AlignDWORD(m_pNext));
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it.style = dwStyle;
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it.dwExtendedStyle = dwStyleEx;
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CRect rcDlg = rc;
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it.x = (short)rcDlg.left;
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it.y = (short)rcDlg.top;
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it.cx = (short)rcDlg.Width();
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it.cy = (short)rcDlg.Height();
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it.id = nID;
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// add class (none)
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m_pNext = (WORD*)(&it+1);
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*m_pNext++ = 0xFFFF; // next WORD is atom
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*m_pNext++ = wType; // ..atom identifier
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ASSERT(m_pNext < m_pEndBuf); // check not out of range
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// increment control/item count
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DLGTEMPLATE* hdr = (DLGTEMPLATE*)m_pBuffer;
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hdr->cdit++;
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}
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//////////////////
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// Add dialog item (control).
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//
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void CDlgTemplateBuilder::AddItem(WORD wType, DWORD dwStyle,
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const CRect& rc, LPCTSTR text, WORD nID, DWORD dwStyleEx)
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{
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AddItemTemplate(wType, dwStyle, rc, nID, dwStyleEx);
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m_pNext = AddText(m_pNext, text); // append title
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*m_pNext++ = 0; // no creation data
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ASSERT(m_pNext < m_pEndBuf);
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}
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//////////////////
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// Add dialog item (control).
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//
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void CDlgTemplateBuilder::AddItem(WORD wType, DWORD dwStyle,
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const CRect& rc, WORD wResID, WORD nID, DWORD dwStyleEx)
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{
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AddItemTemplate(wType, dwStyle, rc, nID, dwStyleEx);
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*m_pNext++ = 0xFFFF; // next is resource id
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*m_pNext++ = wResID; // ..here it is
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*m_pNext++ = 0; // no extra stuff
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ASSERT(m_pNext < m_pEndBuf);
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}
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//////////////////
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// Append text to buffer. Convert to Unicode if necessary.
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// Return pointer to next character after terminating NULL.
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//
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WORD* CDlgTemplateBuilder::AddText(WORD* buf, LPCTSTR text)
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{
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if (text) {
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USES_CONVERSION;
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wcscpy((WCHAR*)buf, T2W((LPTSTR)text));
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buf += wcslen((WCHAR*)buf)+1;
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} else {
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*buf++ = 0;
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}
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return buf;
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}
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//////////////////
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// Create string dialog. If no icon specified, use IDI_QUESTION. Note that
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// the order in which the controls are added is the TAB order.
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//
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BOOL CInputDialog::Init(LPCTSTR caption, LPCTSTR prompt, CWnd* pParent, WORD nIDIcon)
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{
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const int CXDIALOG = 200; // dialog width
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const int DLGMARGIN = 7; // margins all around
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const int CYSTATIC = 8; // height of static text
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const int CYEDIT = 12; // height of edit control
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const int CYSPACE = 5; // vertical space between controls
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const int CXBUTTON = 40; // button width...
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const int CYBUTTON = 15; // ..and height
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CDlgTemplateBuilder& dtb = m_dtb;
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CRect rc(
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CPoint(0,0),
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CSize(CXDIALOG, CYSTATIC + CYEDIT + CYBUTTON + 2*DLGMARGIN + 2*CYSPACE));
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// create dialog header
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DLGTEMPLATE* pTempl = dtb.Begin(WS_POPUPWINDOW|DS_MODALFRAME|WS_DLGFRAME,rc,caption);
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// shrink main rect by margins
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rc.DeflateRect(CSize(DLGMARGIN,DLGMARGIN));
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// create icon if needed
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if (nIDIcon) {
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if (nIDIcon >= (WORD)IDI_APPLICATION) {
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// if using a system icon, I load it here and set it in OnInitDialog
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// because can't specify system icon in template, only icons from
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// application resource file.
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m_hIcon = ::LoadIcon(NULL, MAKEINTRESOURCE(nIDIcon));
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nIDIcon = 0;
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} else {
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m_hIcon = NULL;
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}
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// The size is calculated in pixels, but it seems to work OK--???
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CSize sz(GetSystemMetrics(SM_CXICON),GetSystemMetrics(SM_CYICON));
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CRect rcIcon(rc.TopLeft(), sz);
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dtb.AddItem(CDlgTemplateBuilder::STATIC, // add icon
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WS_VISIBLE|WS_CHILD|SS_LEFT|SS_ICON, rc, nIDIcon, IDICON);
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rc.left += sz.cx; // shrink main rect by width of icon
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}
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// add prompt
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rc.bottom = rc.top + CYSTATIC; // height = height of static
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dtb.AddItem(CDlgTemplateBuilder::STATIC, // add it
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WS_VISIBLE|WS_CHILD|SS_LEFT, rc, prompt);
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// add edit control
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rc += CPoint(0, rc.Height() + CYSPACE); // move below static
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rc.bottom = rc.top + CYEDIT; // height = height of edit control
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dtb.AddItem(CDlgTemplateBuilder::EDIT, // add it ES_AUTOHSCROLL must be add
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WS_VISIBLE|WS_CHILD|WS_BORDER|WS_TABSTOP|ES_AUTOHSCROLL, rc, m_str, IDEDIT);
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// add OK button
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rc += CPoint(0, rc.Height() + CYSPACE); // move below edit control
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rc.bottom = rc.top + CYBUTTON; // height = button height
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rc.left = rc.right - CXBUTTON; // width = button width
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rc -= CPoint(CXBUTTON + DLGMARGIN,0); // move left one button width
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dtb.AddItem(CDlgTemplateBuilder::BUTTON, // add it
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WS_VISIBLE|WS_CHILD|WS_TABSTOP|BS_DEFPUSHBUTTON, rc, _T("&OK"), IDOK);
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// add Cancel button
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rc += CPoint(CXBUTTON + DLGMARGIN,0); // move right again
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dtb.AddItem(CDlgTemplateBuilder::BUTTON, // add Cancel button
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WS_VISIBLE|WS_CHILD|WS_TABSTOP, rc, _T("&Cancel"), IDCANCEL);
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return InitModalIndirect(pTempl, pParent);
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}
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//////////////////
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// Initialize dialog: if I loaded a system icon, set it in static control.
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//
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BOOL CInputDialog::OnInitDialog()
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{
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if (m_hIcon) {
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CStatic* pStatic = (CStatic*)GetDlgItem(IDICON);
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ASSERT(pStatic);
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pStatic->SetIcon(m_hIcon);
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}
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return CDialog::OnInitDialog();
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}
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/////////////////
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// User pressed OK: check for empty string if required flag is set.
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//
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void CInputDialog::OnOK()
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{
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UpdateData(TRUE);
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if (m_bRequired && m_str.IsEmpty()) {
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MessageBeep(0);
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return; // don't quit dialog!
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}
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CDialog::OnOK();
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}
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