108 lines
3.3 KiB
C++
108 lines
3.3 KiB
C++
// Copyright (c) 2015, NetEase Inc.
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// All rights reserved.
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//
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// Author: Redrain
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// Date: 2015/09/24
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//
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// brife: 实现控件的拖拽和窗体的拖放功能
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#pragma once
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#include "OleIdl.h"
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#include "ShObjIdl.h"
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#include <shlobj.h>
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typedef struct _DATASTORAGE
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{
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FORMATETC *m_formatEtc;
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STGMEDIUM *m_stgMedium;
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} DATASTORAGE_t, *LPDATASTORAGE_t;
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class SdkDataObject : public IDataObject
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{
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public:
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SdkDataObject(/*SdkDropSource *pDropSource = NULL*/);
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BOOL IsDataAvailable(CLIPFORMAT cfFormat);
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BOOL GetGlobalData(CLIPFORMAT cfFormat, void **ppData);
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BOOL GetGlobalDataArray(CLIPFORMAT cfFormat,
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HGLOBAL *pDataArray, DWORD dwCount);
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BOOL SetGlobalData(CLIPFORMAT cfFormat, void *pData, BOOL fRelease = TRUE);
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BOOL SetGlobalDataArray(CLIPFORMAT cfFormat,
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HGLOBAL *pDataArray, DWORD dwCount, BOOL fRelease = TRUE);
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//BOOL SetDropTip(DROPIMAGETYPE type, PCWSTR pszMsg, PCWSTR pszInsert);
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// The com interface.
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IFACEMETHODIMP QueryInterface(REFIID riid, void **ppv);
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IFACEMETHODIMP_(ULONG) AddRef();
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IFACEMETHODIMP_(ULONG) Release();
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IFACEMETHODIMP GetData(FORMATETC *pformatetcIn, STGMEDIUM *pmedium);
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IFACEMETHODIMP SetData(FORMATETC *pformatetc,
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STGMEDIUM *pmedium, BOOL fRelease);
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IFACEMETHODIMP GetDataHere(FORMATETC *pformatetc, STGMEDIUM *pmedium);
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IFACEMETHODIMP QueryGetData(FORMATETC *pformatetc);
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IFACEMETHODIMP GetCanonicalFormatEtc(FORMATETC *pformatetcIn,
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FORMATETC *pformatetcOut);
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IFACEMETHODIMP EnumFormatEtc(DWORD dwDirection,
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IEnumFORMATETC **ppenumFormatEtc);
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IFACEMETHODIMP DAdvise(FORMATETC *pformatetc, DWORD advf,
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IAdviseSink *pAdvSnk, DWORD *pdwConnection);
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IFACEMETHODIMP DUnadvise(DWORD dwConnection);
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IFACEMETHODIMP EnumDAdvise(IEnumSTATDATA **ppenumAdvise);
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private:
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~SdkDataObject(void);
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SdkDataObject(const SdkDataObject&);
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SdkDataObject& operator = (const SdkDataObject&);
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HRESULT CopyMedium(STGMEDIUM* pMedDest,
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STGMEDIUM* pMedSrc, FORMATETC* pFmtSrc);
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HRESULT SetBlob(CLIPFORMAT cf, const void *pvBlob, UINT cbBlob);
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private:
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volatile LONG m_lRefCount;
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std::vector<DATASTORAGE_t> m_dataStorageCL;
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};
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class SdkDropSource : public IDropSource
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{
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public:
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SdkDropSource();
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//IUnknown
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virtual HRESULT STDMETHODCALLTYPE QueryInterface(
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/* [in] */ REFIID riid,
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/* [iid_is][out] */ void __RPC_FAR *__RPC_FAR *ppvObject);
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virtual ULONG STDMETHODCALLTYPE AddRef( void);
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virtual ULONG STDMETHODCALLTYPE Release( void);
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//IDropSource
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virtual HRESULT STDMETHODCALLTYPE QueryContinueDrag(
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/* [in] */ BOOL fEscapePressed,
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/* [in] */ DWORD grfKeyState);
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virtual HRESULT STDMETHODCALLTYPE GiveFeedback(
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/* [in] */ DWORD dwEffect);
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// 设置拖拽时鼠标光标的样式，如果不设置则使用系统默认光标
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void SetFeedbackCursor(HCURSOR cursor);
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private:
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long m_cRefCount;
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bool m_bDropped;
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HCURSOR m_feedbackCursor;
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};
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class SdkDragSourceHelper
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{
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public:
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SdkDragSourceHelper();
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virtual ~SdkDragSourceHelper();
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// IDragSourceHelper
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HRESULT InitializeFromBitmap(HBITMAP hBitmap,
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POINT& pt_offset, // cursor position offset of the bitmap
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SIZE& bitmap_size, // hBitmap's size
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IDataObject* pDataObject,
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COLORREF crColorKey = GetSysColor(COLOR_WINDOW) // color of the window used for transparent effect.
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);
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HRESULT InitializeFromWindow(HWND hwnd, POINT& pt, IDataObject* pDataObject);
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private:
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IDragSourceHelper* m_pDragSourceHelper;
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}; |