143 lines
4.2 KiB
C++
143 lines
4.2 KiB
C++
////////////////////////////////////////////////////////////////
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// MSDN -- August 2000
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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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// Largely based on original implementation by Michael Lemley.
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// Compiles with Visual C++ 6.0, runs on Windows 98 and probably NT too.
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//
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// CFileDialogEx implements a CFileDialog that uses the new Windows
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// 2000 style open/save dialog. Use companion class CDocManagerEx in an
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// MFC framework app.
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//
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#include "stdafx.h"
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#include <afxpriv.h>
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#include "FileDlgEx.h"
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IMPLEMENT_DYNAMIC(CFileDialogEx, CFileDialog)
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CFileDialogEx::CFileDialogEx(BOOL bOpenFileDialog, LPCTSTR lpszDefExt,
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LPCTSTR lpszFileName, DWORD dwFlags, LPCTSTR lpszFilter, CWnd* pParentWnd) :
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CFileDialog(bOpenFileDialog, lpszDefExt, lpszFileName,
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dwFlags, lpszFilter, pParentWnd)
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{
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}
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BEGIN_MESSAGE_MAP(CFileDialogEx, CFileDialog)
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//{{AFX_MSG_MAP(CFileDialogEx)
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//}}AFX_MSG_MAP
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END_MESSAGE_MAP()
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/*+-------------------------------------------------------------------------*
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* HasModernFileDialog
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*
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* Returns true if the system we're running on supports the "modern" file
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* open/save dialog (i.e. the one with the places bar). Systems that
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* qualify are Win2K and higher, and WinMe and higher.
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*--------------------------------------------------------------------------*/
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BOOL HasModernFileDialog()
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{
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OSVERSIONINFO osvi = { sizeof(osvi) };
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if (!GetVersionEx (&osvi))
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return (false);
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switch (osvi.dwPlatformId)
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{
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// detect Win2K+
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case VER_PLATFORM_WIN32_NT:
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if (osvi.dwMajorVersion >= 5)
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return (true);
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break;
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// detect WinMe+
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case VER_PLATFORM_WIN32_WINDOWS:
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if ( (osvi.dwMajorVersion >= 5) ||
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((osvi.dwMajorVersion == 4) && (osvi.dwMinorVersion >= 90)))
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return (true);
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break;
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}
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return (false);
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}
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//////////////////
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// DoModal override copied mostly from MFC, with modification to use
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// m_ofnEx instead of m_ofn.
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//
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INT_PTR CFileDialogEx::DoModal()
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{
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ASSERT_VALID(this);
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ASSERT(m_ofn.Flags & OFN_ENABLEHOOK);
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ASSERT(m_ofn.lpfnHook != NULL); // can still be a user hook
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// zero out the file buffer for consistent parsing later
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ASSERT(AfxIsValidAddress(m_ofn.lpstrFile, m_ofn.nMaxFile));
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DWORD nOffset = lstrlen(m_ofn.lpstrFile)+1;
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ASSERT(nOffset <= m_ofn.nMaxFile);
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memset(m_ofn.lpstrFile+nOffset, 0, (m_ofn.nMaxFile-nOffset)*sizeof(TCHAR));
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// WINBUG: This is a special case for the file open/save dialog,
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// which sometimes pumps while it is coming up but before it has
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// disabled the main window.
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HWND hWndFocus = ::GetFocus();
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BOOL bEnableParent = FALSE;
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m_ofn.hwndOwner = PreModal();
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AfxUnhookWindowCreate();
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if (m_ofn.hwndOwner != NULL && ::IsWindowEnabled(m_ofn.hwndOwner))
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{
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bEnableParent = TRUE;
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::EnableWindow(m_ofn.hwndOwner, FALSE);
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}
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_AFX_THREAD_STATE* pThreadState = AfxGetThreadState();
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ASSERT(pThreadState->m_pAlternateWndInit == NULL);
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if (m_ofn.Flags & OFN_EXPLORER)
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pThreadState->m_pAlternateWndInit = this;
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else
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AfxHookWindowCreate(this);
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memset(&m_ofnEx, 0, sizeof(m_ofnEx));
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memcpy(&m_ofnEx, &m_ofn, sizeof(m_ofn));
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if (HasModernFileDialog())
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m_ofnEx.lStructSize = sizeof(m_ofnEx);
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int nResult;
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if (m_bOpenFileDialog)
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nResult = ::GetOpenFileName((OPENFILENAME*)&m_ofnEx);
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else
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nResult = ::GetSaveFileName((OPENFILENAME*)&m_ofnEx);
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memcpy(&m_ofn, &m_ofnEx, sizeof(m_ofn));
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m_ofn.lStructSize = sizeof(m_ofn);
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if (nResult)
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ASSERT(pThreadState->m_pAlternateWndInit == NULL);
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pThreadState->m_pAlternateWndInit = NULL;
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// WINBUG: Second part of special case for file open/save dialog.
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if (bEnableParent)
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::EnableWindow(m_ofnEx.hwndOwner, TRUE);
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if (::IsWindow(hWndFocus))
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::SetFocus(hWndFocus);
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PostModal();
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return nResult ? nResult : IDCANCEL;
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}
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//////////////////
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// When the open dialog sends a notification, copy m_ofnEx to m_ofn in
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// case handler function is expecting updated information in the
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// OPENFILENAME struct.
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//
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BOOL CFileDialogEx::OnNotify(WPARAM wParam, LPARAM lParam, LRESULT* pResult)
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{
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memcpy(&m_ofn, &m_ofnEx, sizeof(m_ofn));
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m_ofn.lStructSize = sizeof(m_ofn);
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return CFileDialog::OnNotify( wParam, lParam, pResult);
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}
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