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Rendering Text with Direct2D & DirectWrite

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4.94/5 (39 votes)
3 Jan 2015CPOL8 min read 105.9K   2.8K   76  
Direct2D, DirectWrite, Windows API, C++, std::shared_ptr and more
 
// hwinshell.h

#pragma once
#ifndef __HWINSHELL_H__
#define __HWINSHELL_H__

#include "hwindef.h"
#include "hwincom.h"
#include "hwinexception.h"
#include "hwinvariant.h"
#include "hwinpropsys.h"


namespace harlinn
{
    namespace windows
    {

        

        struct FilterSpecification
        {
            String name;
            String specification;
        };


        class ShellItem : public Unknown
        {
        public:
            typedef Unknown Base;
            HARLINN_WINDOWS_COM_STANDARD_METHODS_IMPL(ShellItem,Unknown,IShellItem2,IUnknown)

            template <typename T>
            T BindToHandler(IBindCtx *pbc,REFGUID bhid)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                T::InterfaceType* result = nullptr;
                auto hr = pInterface->BindToHandler(pbc,bhid,__uuidof(T::InterfaceType),&result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return T(result);
            }

            ShellItem GetParent( )
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                IShellItem* shellItem = nullptr;
                auto hr = pInterface->GetParent(&shellItem);
                if(FAILED(hr))
                {
                    //CheckHRESULT(hr);
                    return ShellItem(); // 
                }
                IShellItem2* result = nullptr;
                hr = shellItem->QueryInterface(&result);
                shellItem->Release();
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }

                return ShellItem(result);
            }

            String GetDisplayName( SIGDN sigdnName = SIGDN_NORMALDISPLAY)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                LPWSTR result;
                auto hr = pInterface->GetDisplayName(sigdnName,&result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                String s(result);
                CoTaskMemFree(result);
                return s;
            }

            SFGAOF GetAttributes( SFGAOF sfgaoMask )
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                SFGAOF result;
                auto hr = pInterface->GetAttributes(sfgaoMask,&result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return result;
            }

            int Compare( IShellItem *psi, SICHINTF hint = SICHINT_DISPLAY)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                int result;
                auto hr = pInterface->Compare( psi, hint,&result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return result;
            }


            PropertyStore GetPropertyStore( GETPROPERTYSTOREFLAGS flags = GPS_DEFAULT)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                IPropertyStore* result = nullptr;
                auto hr = pInterface->GetPropertyStore( flags ,__uuidof(IPropertyStore),(void**)&result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return PropertyStore(result);
            }

            PropertyStore GetPropertyStoreWithCreateObject(IUnknown *punkCreateObject ,GETPROPERTYSTOREFLAGS flags = GPS_DEFAULT)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                IPropertyStore* result = nullptr;
                auto hr = pInterface->GetPropertyStoreWithCreateObject( flags,punkCreateObject ,__uuidof(IPropertyStore),(void**)&result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return PropertyStore(result);
            }
            PropertyStore GetPropertyStoreForKeys(const PROPERTYKEY *rgKeys, UINT cKeys, GETPROPERTYSTOREFLAGS flags = GPS_DEFAULT)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                IPropertyStore* result = nullptr;
                auto hr = pInterface->GetPropertyStoreForKeys( rgKeys, cKeys, flags ,__uuidof(IPropertyStore),(void**)&result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return PropertyStore(result);
            }
            PropertyDescriptionList GetPropertyDescriptionList( REFPROPERTYKEY keyType)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                IPropertyDescriptionList* result = nullptr;
                auto hr = pInterface->GetPropertyDescriptionList( keyType ,__uuidof(IPropertyDescriptionList),(void**)&result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return PropertyDescriptionList(result);
            }

            ShellItem& Update( IBindCtx *pbc)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                auto hr = pInterface->Update( pbc );
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return *this;
            }
            PropertyVariant GetProperty( REFPROPERTYKEY key)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                PropertyVariant result;
                auto hr = pInterface->GetProperty( key , &result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return result;
            }
            CLSID GetCLSID( REFPROPERTYKEY key )
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                CLSID result = {0,};
                auto hr = pInterface->GetCLSID( key , &result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return result;
            }
            DateTime GetFileTime(REFPROPERTYKEY key)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                long long ft = {0,};
                auto hr = pInterface->GetFileTime( key , (FILETIME*)&ft);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                DateTime result = DateTime::FromFileTimeUtc(ft);
                return result;
            }
            int GetInt32( REFPROPERTYKEY key)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                int result = 0;
                auto hr = pInterface->GetInt32( key , &result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return result;
            }
            String GetString( REFPROPERTYKEY key)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                LPWSTR result = nullptr;
                auto hr = pInterface->GetString( key , &result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                String s(result);
                CoTaskMemFree(result);
                return s;
            }
            ULONG GetUInt32( REFPROPERTYKEY key)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                ULONG result = 0;
                auto hr = pInterface->GetUInt32( key , &result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return result;
            }
            ULONGLONG GetUInt64( REFPROPERTYKEY key)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                ULONGLONG result = 0;
                auto hr = pInterface->GetUInt64( key , &result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return result;
            }
            bool GetBool( REFPROPERTYKEY key)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                BOOL result = 0;
                auto hr = pInterface->GetBool( key , &result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return result != FALSE;
            }
        };


        class EnumShellItems : public Unknown
        {
        public:
            typedef Unknown Base;
            HARLINN_WINDOWS_COM_STANDARD_METHODS_IMPL(EnumShellItems,Unknown,IEnumShellItems,IUnknown)

            bool Next( ShellItem& theResult )
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                IShellItem* pElement = nullptr;
                ULONG actual = 0;
                auto hr = pInterface->Next(1,&pElement,&actual);
                if(actual)
                {
                    IShellItem2* pShellItem = nullptr;
                    hr = pElement->QueryInterface(&pShellItem);
                    pElement->Release();
                    if(FAILED(hr))
                    {
                        CheckHRESULT(hr);
                    }
                    theResult.Reset(pShellItem);
                    return true;
                }
                return false;
            }

            bool Next( ULONG requestedNumberOfElements, std::vector<Unknown>& result)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                IShellItem** pElements = (IShellItem**)alloca(requestedNumberOfElements*sizeof(IShellItem*));
                memset(pElements,0,requestedNumberOfElements*sizeof(IShellItem*));
                ULONG actual = 0;

                auto hr = pInterface->Next(1,pElements,&actual);
                if(actual)
                {
                    result.clear();
                    for(ULONG i= 0; i < actual; i++)
                    {
                        IShellItem* pElement = pElements[i];
                        IShellItem2* pShellItem = nullptr;
                        hr = pElement->QueryInterface(&pShellItem);
                        pElement->Release();
                        if(FAILED(hr))
                        {
                            for(ULONG ii= i+1; ii < actual; ii++)
                            {
                                pElements[ii]->Release();
                            }
                            CheckHRESULT(hr);
                        }
                        result.push_back(ShellItem(pShellItem));
                    }
                    return true;
                }
                return false;
            }
            EnumShellItems& Skip(ULONG numberOfElements)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                auto hr = pInterface->Skip(numberOfElements);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return *this;
            }
        
            EnumShellItems& Reset( )
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                auto hr = pInterface->Reset();
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return *this;
            }

            EnumShellItems Clone()
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                IEnumShellItems* pClone = nullptr;
                auto hr = pInterface->Clone(&pClone);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return EnumShellItems(pClone);
            }

        };


        class ShellItemArray : public Unknown
        {
        public:
            typedef Unknown Base;
            HARLINN_WINDOWS_COM_STANDARD_METHODS_IMPL(ShellItemArray,Unknown,IShellItemArray,IUnknown)

            template <typename T>
            T BindToHandler(IBindCtx *pbc,REFGUID bhid)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                T::InterfaceType* result = nullptr;
                auto hr = pInterface->BindToHandler(pbc,bhid,__uuidof(T::InterfaceType),&result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return T(result);
            }

            PropertyStore GetPropertyStore( GETPROPERTYSTOREFLAGS flags = GPS_DEFAULT)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                IPropertyStore* result = nullptr;
                auto hr = pInterface->GetPropertyStore( flags ,__uuidof(IPropertyStore),(void**)&result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return PropertyStore(result);
            }

            PropertyDescriptionList GetPropertyDescriptionList( REFPROPERTYKEY keyType)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                IPropertyDescriptionList* result = nullptr;
                auto hr = pInterface->GetPropertyDescriptionList( keyType ,__uuidof(IPropertyDescriptionList),(void**)&result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return PropertyDescriptionList(result);
            }

        
            SFGAOF GetAttributes( SIATTRIBFLAGS AttribFlags,SFGAOF sfgaoMask)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                SFGAOF result;
                auto hr = pInterface->GetAttributes(AttribFlags,sfgaoMask,&result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return result;
            }
            DWORD GetCount( )
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                DWORD result;
                auto hr = pInterface->GetCount(&result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return result;
            }
        
            ShellItem GetItemAt( DWORD dwIndex )
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                IShellItem* pElement = nullptr;
                auto hr = pInterface->GetItemAt(dwIndex,&pElement);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }

                IShellItem2* pShellItem = nullptr;
                hr = pElement->QueryInterface(&pShellItem);
                pElement->Release();
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return ShellItem(pShellItem);
            }
        
            EnumShellItems EnumItems( )
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                IEnumShellItems* pEnumItems = nullptr;
                auto hr = pInterface->EnumItems(&pEnumItems);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return EnumShellItems(pEnumItems);
            }

        };

    };
};

#endif // __HWINSHELL_H__

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
Espen Harlinn
Architect Sea Surveillance AS
Norway Norway
Chief Architect - Sea Surveillance AS.

Specializing in integrated operations and high performance computing solutions.

I’ve been fooling around with computers since the early eighties, I’ve even done work on CP/M and MP/M.

Wrote my first “real” program on a BBC micro model B based on a series in a magazine at that time. It was fun and I got hooked on this thing called programming ...

A few Highlights:

  • High performance application server development
  • Model Driven Architecture and Code generators
  • Real-Time Distributed Solutions
  • C, C++, C#, Java, TSQL, PL/SQL, Delphi, ActionScript, Perl, Rexx
  • Microsoft SQL Server, Oracle RDBMS, IBM DB2, PostGreSQL
  • AMQP, Apache qpid, RabbitMQ, Microsoft Message Queuing, IBM WebSphereMQ, Oracle TuxidoMQ
  • Oracle WebLogic, IBM WebSphere
  • Corba, COM, DCE, WCF
  • AspenTech InfoPlus.21(IP21), OsiSoft PI


More information about what I do for a living can be found at: harlinn.com or LinkedIn

You can contact me at espen@harlinn.no

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Posted 30 Sep 2012

Article Copyright 2012 by Espen Harlinn
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