atlcontrolwinppg.h

用VC开发activex 一书实例1 ATLControl

// ATLControlWinPPG.h : Declaration of the CATLControlWinPPG

#ifndef __ATLCONTROLWINPPG_H_
#define __ATLCONTROLWINPPG_H_

#include "resource.h"       // main symbols
#include "alignmentenums.h"
#include "ATLControl.h"

EXTERN_C const CLSID CLSID_ATLControlWinPPG;

/////////////////////////////////////////////////////////////////////////////
// CATLControlWinPPG
class ATL_NO_VTABLE CATLControlWinPPG :
	public CComObjectRootEx<CComObjectThreadModel>,
	public CComCoClass<CATLControlWinPPG, &CLSID_ATLControlWinPPG>,
	public IPropertyPageImpl<CATLControlWinPPG>,
	public CDialogImpl<CATLControlWinPPG>
{
public:
	CATLControlWinPPG() 
	{
		m_dwTitleID = IDS_TITLEATLControlWinPPG;
		m_dwHelpFileID = IDS_HELPFILEATLControlWinPPG;
		m_dwDocStringID = IDS_DOCSTRINGATLControlWinPPG;
	}

	enum {IDD = IDD_ATLCONTROLWINPPG};

DECLARE_REGISTRY_RESOURCEID(IDR_ATLCONTROLWINPPG)

BEGIN_COM_MAP(CATLControlWinPPG) 
	COM_INTERFACE_ENTRY_IMPL(IPropertyPage)
END_COM_MAP()

BEGIN_MSG_MAP(CATLControlWinPPG)
	MESSAGE_HANDLER(WM_INITDIALOG, OnInitDialog)
	COMMAND_HANDLER(IDC_ALIGNMENTCOMBO, CBN_SELCHANGE, OnAlignmentComboSelChange)
	CHAIN_MSG_MAP(IPropertyPageImpl<CATLControlWinPPG>)
END_MSG_MAP()

	LRESULT OnInitDialog(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL & bHandled)
	{
		// get the window handle of the combobox control
		HWND hTempWnd = ::GetDlgItem(m_hWnd, IDC_ALIGNMENTCOMBO);

		// make sure that the control is empty
		::SendMessage(hTempWnd, CB_RESETCONTENT, 0, 0);

		// set the selection strings in the control - it is important that the control
		// be unsorted since the entries index will relate to the property setting
		::SendMessage(hTempWnd, CB_ADDSTRING, 0, (LPARAM)(LPCTSTR) EALIGN_LEFT_TEXT);
		::SendMessage(hTempWnd, CB_ADDSTRING, 0, (LPARAM)(LPCTSTR) EALIGN_CENTER_TEXT);
		::SendMessage(hTempWnd, CB_ADDSTRING, 0, (LPARAM)(LPCTSTR) EALIGN_RIGHT_TEXT);

		// see if the object supports the interface we need
		CComQIPtr<IATLControlWin, &IID_IATLControlWin>pControl(m_ppUnk[0]);

		long lAlignment;

		// set the control with the new value and if it failed
		pControl->get_Alignment(&lAlignment);

		// get the current selection in the listbox
		::SendMessage(::GetDlgItem(m_hWnd, IDC_ALIGNMENTCOMBO), CB_SETCURSEL, lAlignment, 0);

		return TRUE;
	}

	LRESULT OnAlignmentComboSelChange(WORD wNotify, WORD wID, HWND hWnd, BOOL& bHandled)
	{
		SetDirty(TRUE);
		return FALSE;
	}

	STDMETHOD(Apply)(void)
	{
		USES_CONVERSION;
		ATLTRACE(_T("CATLControlWinPPG::Apply\n"));
		for (UINT i = 0; i < m_nObjects; i++)
		{
			// see if the object supports the interface we need
			CComQIPtr<IATLControlWin, &IID_IATLControlWin> pControl(m_ppUnk[i]);

			// get the current selection in the listbox
			long lAlignment = (long) ::SendMessage(::GetDlgItem(m_hWnd, IDC_ALIGNMENTCOMBO), CB_GETCURSEL, 0, 0);

			// set the control with the new value and if it failed
			if FAILED(pControl->put_Alignment(lAlignment))
			{
				// generate an error message
				CComPtr<IErrorInfo> pError;
				CComBSTR            strError;
				GetErrorInfo(0, &pError);
				pError->GetDescription(&strError);
				MessageBox(OLE2T(strError), _T("Error"), MB_ICONEXCLAMATION);
				return E_FAIL;
			}
		}

		m_bDirty = FALSE;
		return S_OK;
	}
};

#endif //__ATLCONTROLWINPPG_H_