296 lines
8.1 KiB
C++
296 lines
8.1 KiB
C++
//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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//
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// Copyright (C) Microsoft Corporation, 1999 - 1999
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//
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// File: about.cpp
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//
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//--------------------------------------------------------------------------
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#include "stdafx.h"
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#include "about.h"
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#include "bitmap.h"
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#define EDIT_CONTROL_CRLF _T("\r\r\n")
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//
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// This file implements the About Properties used by the snap-in manager
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//
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CSnapinAbout::CSnapinAbout()
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{
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TRACE_METHOD(CSnapinAbout, CSnapinAbout);
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CommonContruct();
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}
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void CSnapinAbout::CommonContruct()
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{
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m_bBasicInfo = FALSE;
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m_bFullInfo = FALSE;
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m_cMask = RGB(0,0,0);
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m_hrObjectStatus = S_OK;
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}
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BOOL CSnapinAbout::GetInformation(CLSID& clsid, int nType)
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{
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TRACE_METHOD(CSnapinAbout, GetInformation);
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if (m_bFullInfo == TRUE || m_bBasicInfo == TRUE)
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{
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TRACE(_T("Destroying old Snapin information\n"));
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// Preserve the snapin name, it can't be reloaded from
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// the snapin ISnapinAbout interface
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LPOLESTR strTemp = m_lpszSnapinName.Detach();
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CSnapinAbout::~CSnapinAbout();
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m_lpszSnapinName.Attach(strTemp);
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}
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m_bFullInfo = m_bBasicInfo = FALSE;
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// Create the interface and get the snap-in information
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ISnapinAboutPtr spAboutInfo;
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m_hrObjectStatus = spAboutInfo.CreateInstance(clsid, NULL, MMC_CLSCTX_INPROC);
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if (FAILED(m_hrObjectStatus))
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return FALSE;
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// Basic info (required to display snapin node)
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HBITMAP hbmSmallImage;
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HBITMAP hbmSmallImageOpen;
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HBITMAP hbmLargeImage;
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if (SUCCEEDED(spAboutInfo->GetStaticFolderImage (&hbmSmallImage,
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&hbmSmallImageOpen,
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&hbmLargeImage,
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&m_cMask)))
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{
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/*
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* Bug 249817: The bitmaps are out parameters, so the caller (MMC)
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* should own them and be responsible for destroying them.
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* Unfortunately, the docs for ISnapinAbout::GetStaticFolderImage
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* specifically instruct the snap-in to destroy them when the
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* ISnapinAbout interface is released. We have to make copies instead.
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*/
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m_SmallImage = CopyBitmap (hbmSmallImage);
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m_SmallImageOpen = CopyBitmap (hbmSmallImageOpen);
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m_LargeImage = CopyBitmap (hbmLargeImage);
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}
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m_bBasicInfo = TRUE;
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if (nType == BASIC_INFO)
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return TRUE;
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// Full information (required for About box)
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HICON hTemp;
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/*
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* Bug 249817: The icon is an out parameter, so the caller (MMC)
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* should own it and be responsible for destroying it.
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* Unfortunately, the docs for ISnapinAbout::GetSnapinImage
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* specifically instruct the snap-in to destroy it when the
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* ISnapinAbout interface is released. We have to make a copy instead.
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*/
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if (SUCCEEDED(spAboutInfo->GetSnapinImage(&hTemp)))
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m_AppIcon.Attach(CopyIcon(hTemp));
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LPOLESTR strTemp;
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if (SUCCEEDED(spAboutInfo->GetSnapinDescription(&strTemp)))
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m_lpszDescription.Attach(strTemp);
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if (SUCCEEDED(spAboutInfo->GetProvider(&strTemp)))
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m_lpszCompanyName.Attach(strTemp);
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if (SUCCEEDED(spAboutInfo->GetSnapinVersion(&strTemp)))
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m_lpszVersion.Attach(strTemp);
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m_bFullInfo = TRUE;
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return TRUE;
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}
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void CSnapinAbout::ShowAboutBox()
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{
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TRACE_METHOD(CSnapinAbout, Show);
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CSnapinAboutDialog dlg(this);
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dlg.DoModal();
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}
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/////////////////////////////////////////////////////////////////////////////
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// CSnapinAboutPage message handlers
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LRESULT CSnapinAboutDialog::OnInitDialog(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
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{
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// hook up controls
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DECLARE_SC(sc, TEXT("CSnapinAboutDialog::OnInitDialog"));
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sc = ScCheckPointers(m_pAboutInfo, E_UNEXPECTED);
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if (sc)
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return TRUE;
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// Title should be set "About <SnapinName>"
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tstring szTitle;
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bool bRet = szTitle.LoadString(GetStringModule(), IDS_ABOUT);
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if (!bRet)
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return TRUE;
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USES_CONVERSION;
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LPCOLESTR lpszSnapinName = m_pAboutInfo->GetSnapinName();
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if (lpszSnapinName)
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szTitle += OLE2CT(lpszSnapinName);
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else
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{
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tstring szSnapin;
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bRet = szSnapin.LoadString(GetStringModule(), IDS_SNAPINSTR);
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if (!bRet)
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return TRUE;
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szTitle += szSnapin;
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}
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SetWindowText(szTitle.data());
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HWND hwndSnapinInfo = ::GetDlgItem(*this, IDC_SNAPIN_INFO);
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sc = ScCheckPointers(hwndSnapinInfo, E_UNEXPECTED);
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if (sc)
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return TRUE;
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m_SnapinInfo.Attach(hwndSnapinInfo);
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if (lpszSnapinName)
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{
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m_SnapinInfo.AppendText(OLE2CT(lpszSnapinName));
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m_SnapinInfo.AppendText(EDIT_CONTROL_CRLF);
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}
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LPCOLESTR lpszCompanyName = m_pAboutInfo->GetCompanyName();
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if (lpszCompanyName)
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{
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m_SnapinInfo.AppendText(OLE2CT(lpszCompanyName));
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m_SnapinInfo.AppendText(EDIT_CONTROL_CRLF);
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}
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LPCOLESTR lpszVersion = m_pAboutInfo->GetVersion();
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if (lpszVersion)
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{
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tstring szVersion;
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bRet = szVersion.LoadString(GetStringModule(), IDS_VERSION);
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if (!bRet)
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return TRUE;
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m_SnapinInfo.AppendText(szVersion.data());
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m_SnapinInfo.AppendText(OLE2CT(lpszVersion));
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}
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HWND hwndSnapinDesc = ::GetDlgItem(*this, IDC_SNAPIN_DESC);
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sc = ScCheckPointers(hwndSnapinDesc, E_UNEXPECTED);
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if (sc)
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return TRUE;
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m_SnapinDesc.Attach(hwndSnapinDesc);
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LPCOLESTR lpszDescription = m_pAboutInfo->GetDescription();
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sc = ScSetDescriptionUIText(m_SnapinDesc, lpszDescription ? OLE2CT(lpszDescription) : _T(""));
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if (sc)
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return TRUE;
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// App icon
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HICON hAppIcon = m_pAboutInfo->GetSnapinIcon();
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if (hAppIcon)
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{
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HWND const icon = ::GetDlgItem(*this, IDC_APPICON);
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ASSERT(icon != NULL);
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m_hIcon.Attach(icon);
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m_hIcon.SetIcon(hAppIcon);
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}
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return TRUE;
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}
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LRESULT
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CSnapinAboutDialog::OnOK(WORD wNotifyCode, WORD wID, HWND hWndCtl, BOOL& bHandled)
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{
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EndDialog(IDOK);
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return TRUE;
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}
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LRESULT
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CSnapinAboutDialog::OnCancel(WORD wNotifyCode, WORD wID, HWND hWndCtl, BOOL& bHandled)
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{
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EndDialog(IDCANCEL);
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return FALSE;
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}
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//+-------------------------------------------------------------------
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//
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// Member: ScSetDescriptionUIText
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//
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// Synopsis: Given a edit control window & description text. Insert
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// the text into the control and enable scrollbar if needed.
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//
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// Arguments: [hwndSnapinDescEdit] - The edit control window handle.
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// [lpszDescription] - The description text (cant be NULL).
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//
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// Returns: SC
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//
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//--------------------------------------------------------------------
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SC ScSetDescriptionUIText(HWND hwndSnapinDescEdit, LPCTSTR lpszDescription)
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{
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DECLARE_SC(sc, TEXT("ScSetDescriptionUIText"));
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sc = ScCheckPointers(hwndSnapinDescEdit, lpszDescription);
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if (sc)
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return sc;
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// 1. Attach the window to WTL::CEdit object.
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WTL::CEdit wndsnapinDesc(hwndSnapinDescEdit);
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// 2. Insert the text into the window.
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wndsnapinDesc.SetWindowText(lpszDescription);
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/*
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* 3. The description control may need scroll bar.
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* This is determined below, if ( (# of lines * height of one line) > rectangle-height).
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*/
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// 3a) turn-off scroll & do the calculation, so that scroll-bar width does not
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// modify linecount below.
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wndsnapinDesc.ShowScrollBar(SB_VERT, FALSE);
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WTL::CDC dc(wndsnapinDesc.GetWindowDC());
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if (dc.IsNull())
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return (sc = E_UNEXPECTED);
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TEXTMETRIC tm;
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// 3b) Calculate height of a single line.
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HFONT hOldFont = dc.SelectFont(wndsnapinDesc.GetFont());
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dc.GetTextMetrics(&tm);
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int cyLineHeight = tm.tmHeight + tm.tmExternalLeading;
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// 3c) Calculate edit box dimensions in logical units.
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WTL::CRect rect;
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wndsnapinDesc.GetRect(&rect);
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dc.DPtoLP(&rect);
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int nLines = wndsnapinDesc.GetLineCount();
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// 3d) If the total text height exceeds edit box height so turn on scroll.
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if ( (nLines * cyLineHeight) > rect.Height())
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wndsnapinDesc.ShowScrollBar(SB_VERT, TRUE);
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dc.SelectFont(hOldFont);
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wndsnapinDesc.SetSel(0, 0);
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return sc;
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}
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