DragSourceHelper Class Reference

implementation of IDragSourceHelper interface More...

#include <dragdropimpl.h>

Collaboration diagram for DragSourceHelper:

Public Member Functions
	DragSourceHelper ()
virtual	~DragSourceHelper ()
HRESULT	InitializeFromBitmap (HBITMAP hBitmap, POINT &pt, RECT &rc, IDataObject *pDataObject, COLORREF crColorKey=GetSysColor(COLOR_WINDOW))
HRESULT	InitializeFromWindow (HWND hwnd, POINT &pt, IDataObject *pDataObject)

Private Attributes
IDragSourceHelper *	pDragSourceHelper

Detailed Description

implementation of IDragSourceHelper interface

Definition at line 214 of file dragdropimpl.h.

Constructor & Destructor Documentation

DragSourceHelper()

DragSourceHelper::DragSourceHelper ( )

inline

Definition at line 219 of file dragdropimpl.h.

    {
        if (FAILED(CoCreateInstance(CLSID_DragDropHelper,
                        NULL,
                        CLSCTX_INPROC_SERVER,
                        IID_IDragSourceHelper,
                        (void**)&pDragSourceHelper)))
            pDragSourceHelper = NULL;
    }

~DragSourceHelper()

virtual DragSourceHelper::~DragSourceHelper ( )

inlinevirtual

Definition at line 229 of file dragdropimpl.h.

    {
        if (pDragSourceHelper != NULL)
        {
            pDragSourceHelper->Release();
            pDragSourceHelper=NULL;
        }
    }

Member Function Documentation

InitializeFromBitmap()

HRESULT DragSourceHelper::InitializeFromBitmap ( HBITMAP  hBitmap, POINT &  pt, RECT &  rc, IDataObject *  pDataObject, COLORREF  crColorKey = GetSysColor(COLOR_WINDOW)  )

inline

Definition at line 239 of file dragdropimpl.h.

    {
        if (pDragSourceHelper == NULL)
            return E_FAIL;
 
        SHDRAGIMAGE di;
        BITMAP      bm;
        GetObject(hBitmap, sizeof(bm), &bm);
        di.sizeDragImage.cx = bm.bmWidth;
        di.sizeDragImage.cy = bm.bmHeight;
        di.hbmpDragImage = hBitmap;
        di.crColorKey = crColorKey;
        di.ptOffset.x = pt.x - rc.left;
        di.ptOffset.y = pt.y - rc.top;
        return pDragSourceHelper->InitializeFromBitmap(&di, pDataObject);
    }

InitializeFromWindow()

HRESULT DragSourceHelper::InitializeFromWindow ( HWND  hwnd, POINT &  pt, IDataObject *  pDataObject  )

inline

Definition at line 261 of file dragdropimpl.h.

    {
        if (pDragSourceHelper == NULL)
            return E_FAIL;
        return pDragSourceHelper->InitializeFromWindow(hwnd, &pt, pDataObject);
    }

Member Data Documentation

pDragSourceHelper

IDragSourceHelper* DragSourceHelper::pDragSourceHelper

private

Definition at line 216 of file dragdropimpl.h.

Referenced by DragSourceHelper(), InitializeFromBitmap(), InitializeFromWindow(), and ~DragSourceHelper().

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The documentation for this class was generated from the following file:

• modules/rosapps/applications/explorer-old/utility/dragdropimpl.h