windows-nt-4.0/private/sdktools/vctools/ntmfc/src42/appui.cpp

// This is a part of the Microsoft Foundation Classes C++ library.
// Copyright (C) 1992-1995 Microsoft Corporation
// All rights reserved.
//
// This source code is only intended as a supplement to the
// Microsoft Foundation Classes Reference and related
// electronic documentation provided with the library.
// See these sources for detailed information regarding the
// Microsoft Foundation Classes product.

#include "stdafx.h"

#ifdef AFX_CORE2_SEG
#pragma code_seg(AFX_CORE2_SEG)
#endif

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

/////////////////////////////////////////////////////////////////////////////
// CWinApp User Interface Extensions

void CWinApp::OnAppExit()
{
	// same as double-clicking on main window close box
	ASSERT(m_pMainWnd != NULL);
	m_pMainWnd->SendMessage(WM_CLOSE);
}

#ifdef AFX_CORE3_SEG
#pragma code_seg(AFX_CORE3_SEG)
#endif

void CWinApp::HideApplication()
{
	ASSERT_VALID(m_pMainWnd);

	// hide the application's windows before closing all the documents
	m_pMainWnd->ShowWindow(SW_HIDE);
	m_pMainWnd->ShowOwnedPopups(FALSE);

	// put the window at the bottom of zorder, so it isn't activated
	m_pMainWnd->SetWindowPos(&CWnd::wndBottom, 0, 0, 0, 0,
		SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE);
}

void CWinApp::DoWaitCursor(int nCode)
{
	// 0 => restore, 1=> begin, -1=> end
	ASSERT(nCode == 0 || nCode == 1 || nCode == -1);
	ASSERT(afxData.hcurWait != NULL);
	AfxLockGlobals(CRIT_WAITCURSOR);
	m_nWaitCursorCount += nCode;
	if (m_nWaitCursorCount > 0)
	{
		HCURSOR hcurPrev = ::SetCursor(afxData.hcurWait);
		if (nCode > 0 && m_nWaitCursorCount == 1)
			m_hcurWaitCursorRestore = hcurPrev;
	}
	else
	{
		// turn everything off
		m_nWaitCursorCount = 0;     // prevent underflow
		::SetCursor(m_hcurWaitCursorRestore);
	}
	AfxUnlockGlobals(CRIT_WAITCURSOR);
}

void CWinApp::EnableModeless(BOOL bEnable)
{
#ifdef _AFX_NO_OLE_SUPPORT
	UNUSED(bEnable);
#endif

	// no-op if main window is NULL or not a CFrameWnd
	CWnd* pMainWnd = AfxGetMainWnd();
	if (pMainWnd == NULL || !pMainWnd->IsFrameWnd())
		return;

#ifndef _AFX_NO_OLE_SUPPORT
	// check if notify hook installed
	ASSERT_KINDOF(CFrameWnd, pMainWnd);
	CFrameWnd* pFrameWnd = (CFrameWnd*)pMainWnd;
	if (pFrameWnd->m_pNotifyHook != NULL)
		pFrameWnd->m_pNotifyHook->OnEnableModeless(bEnable);
#endif
}

int CWinApp::DoMessageBox(LPCTSTR lpszPrompt, UINT nType, UINT nIDPrompt)
{
	ASSERT_VALID(this);

	// disable windows for modal dialog
	EnableModeless(FALSE);
	HWND hWndTop;
	CWnd* pWnd = CWnd::GetSafeOwner(NULL, &hWndTop);

	// set help context if possible
	DWORD* pdwContext = &m_dwPromptContext;
	if (pWnd != NULL)
	{
		// use app-level context or frame level context
		ASSERT_VALID(pWnd);
		CWnd* pMainWnd = pWnd->GetTopLevelParent();
		ASSERT_VALID(pMainWnd);
		if (pMainWnd->IsFrameWnd())
			pdwContext = &((CFrameWnd*)pMainWnd)->m_dwPromptContext;
	}

	ASSERT(pdwContext != NULL);
	DWORD dwOldPromptContext = *pdwContext;
	if (nIDPrompt != 0)
		*pdwContext = HID_BASE_PROMPT+nIDPrompt;

	// determine icon based on type specified
	if ((nType & MB_ICONMASK) == 0)
	{
		switch (nType & MB_TYPEMASK)
		{
		case MB_OK:
		case MB_OKCANCEL:
			nType |= MB_ICONEXCLAMATION;
			break;

		case MB_YESNO:
		case MB_YESNOCANCEL:
			nType |= MB_ICONEXCLAMATION;
			break;

		case MB_ABORTRETRYIGNORE:
		case MB_RETRYCANCEL:
			// No default icon for these types, since they are rarely used.
			// The caller should specify the icon.
			break;

#ifdef _MAC
		case MB_SAVEDONTSAVECANCEL:
			nType |= MB_ICONEXCLAMATION;
			break;
#endif
		}
	}

#ifdef _DEBUG
	if ((nType & MB_ICONMASK) == 0)
		TRACE0("Warning: no icon specified for message box.\n");
#endif

	_AFX_THREAD_STATE* pThreadState = AfxGetThreadState();
	int nResult =
		::MessageBox(pWnd->GetSafeHwnd(), lpszPrompt, m_pszAppName, nType);
	*pdwContext = dwOldPromptContext;

	// re-enable windows
	if (hWndTop != NULL)
		::EnableWindow(hWndTop, TRUE);
	EnableModeless(TRUE);

	return nResult;
}

int AFXAPI AfxMessageBox(LPCTSTR lpszText, UINT nType, UINT nIDHelp)
{
	CWinApp* pApp = AfxGetApp();
	return pApp->DoMessageBox(lpszText, nType, nIDHelp);
}

int AFXAPI AfxMessageBox(UINT nIDPrompt, UINT nType, UINT nIDHelp)
{
	CString string;
	if (!string.LoadString(nIDPrompt))
	{
		TRACE1("Error: failed to load message box prompt string 0x%04x.\n",
			nIDPrompt);
		ASSERT(FALSE);
	}
	if (nIDHelp == (UINT)-1)
		nIDHelp = nIDPrompt;
	return AfxGetApp()->DoMessageBox(string, nType, nIDHelp);
}

int CWnd::MessageBox(LPCTSTR lpszText, LPCTSTR lpszCaption, UINT nType)
{
	if (lpszCaption == NULL)
		lpszCaption = AfxGetAppName();
	_AFX_THREAD_STATE* pThreadState = AfxGetThreadState();
	int nResult = ::MessageBox(GetSafeHwnd(), lpszText, lpszCaption, nType);
	return nResult;
}

BOOL CWinApp::SaveAllModified()
{
	if (m_pDocManager != NULL)
		return m_pDocManager->SaveAllModified();
	return TRUE;
}

void CWinApp::AddToRecentFileList(LPCTSTR lpszPathName)
{
	ASSERT_VALID(this);
	ASSERT(lpszPathName != NULL);
	ASSERT(AfxIsValidString(lpszPathName));

	if (m_pRecentFileList != NULL)
	{
		// fully qualify the path name
		TCHAR szTemp[_MAX_PATH];
		AfxFullPath(szTemp, lpszPathName);

		// then add to recent file list
		m_pRecentFileList->Add(lpszPathName);
	}
}

CDocument* CWinApp::OpenDocumentFile(LPCTSTR lpszFileName)
{
	ASSERT(m_pDocManager != NULL);
	return m_pDocManager->OpenDocumentFile(lpszFileName);
}

void CWinApp::CloseAllDocuments(BOOL bEndSession)
{
	if (m_pDocManager != NULL)
		m_pDocManager->CloseAllDocuments(bEndSession);
}

/////////////////////////////////////////////////////////////////////////////
// MRU file list default implementation

void CWinApp::OnUpdateRecentFileMenu(CCmdUI* pCmdUI)
{
	ASSERT_VALID(this);
	if (m_pRecentFileList == NULL) // no MRU files
		pCmdUI->Enable(FALSE);
	else
		m_pRecentFileList->UpdateMenu(pCmdUI);
}

/////////////////////////////////////////////////////////////////////////////
// DDE and ShellExecute support

#ifndef _MAC
BOOL CWinApp::OnDDECommand(LPTSTR lpszCommand)
{
	if (m_pDocManager != NULL)
		return m_pDocManager->OnDDECommand(lpszCommand);
	else
		return FALSE;
}
#endif

/////////////////////////////////////////////////////////////////////////////
// MRU file list default implementation

BOOL CWinApp::OnOpenRecentFile(UINT nID)
{
	ASSERT_VALID(this);
	ASSERT(m_pRecentFileList != NULL);

	ASSERT(nID >= ID_FILE_MRU_FILE1);
	ASSERT(nID < ID_FILE_MRU_FILE1 + (UINT)m_pRecentFileList->GetSize());
	int nIndex = nID - ID_FILE_MRU_FILE1;
	ASSERT((*m_pRecentFileList)[nIndex].GetLength() != 0);

	TRACE2("MRU: open file (%d) '%s'.\n", (nIndex) + 1,
			(LPCTSTR)(*m_pRecentFileList)[nIndex]);

	if (OpenDocumentFile((*m_pRecentFileList)[nIndex]) == NULL)
		m_pRecentFileList->Remove(nIndex);

	return TRUE;
}

/////////////////////////////////////////////////////////////////////////////