subsys/system/explorer/Seashell/SeaShellExt/uidroptarget.cpp

   1 //*******************************************************************************
   2 // COPYRIGHT NOTES
   3 // ---------------
   4 // You may use this source code, compile or redistribute it as part of your application
   5 // for free. You cannot redistribute it as a part of a software development
   6 // library without the agreement of the author. If the sources are
   7 // distributed along with the application, you should leave the original
   8 // copyright notes in the source code without any changes.
   9 // This code can be used WITHOUT ANY WARRANTIES at your own risk.
  10 //
  11 // For the latest updates to this code, check this site:
  12 // http://www.masmex.com
  13 // after Sept 2000
  14 //
  15 // Copyright(C) 2000 Philip Oldaker <email: philip@masmex.com>
  16 //*******************************************************************************
  17
  18 #include "stdafx.h"
  19 #include "UICtrl.h"
  20 #include "UIDragImage.h"
  21 #include "UIDropTarget.h"
  22 #include "UIDragDropCtrl.h"
  23
  24 #ifdef _DEBUG
  25 #define new DEBUG_NEW
  26 #undef THIS_FILE
  27 static char THIS_FILE[] = __FILE__;
  28 #endif
  29
  30 IMPLEMENT_DYNAMIC(CDD_OleDropTargetInfo,CObject)
  31
  32 void CListDropTarget::OnDragLeave(CWnd* pWnd)
  33 {
  34         CUI_ImageDropTarget::OnDragLeave(pWnd);
  35         CDD_OleDropTargetInfo Info(pWnd->GetSafeHwnd());
  36         if (!pWnd->SendMessage(WM_APP_OLE_DD_LEAVE,(WPARAM)&Info))
  37                 pWnd->GetParent()->SendMessage(WM_APP_OLE_DD_LEAVE,(WPARAM)&Info);
  38 }
  39
  40 DROPEFFECT CListDropTarget::OnDragEnter( CWnd* pWnd, COleDataObject* pDataObject, DWORD dwKeyState, CPoint point )
  41 {
  42         // Should be starting in a CUIODListCtrl window
  43         CUI_ImageDropTarget::OnDragEnter(pWnd,pDataObject,dwKeyState,point);
  44         CDD_OleDropTargetInfo Info(pWnd->GetSafeHwnd(),point,pDataObject);
  45         Info.SetKeyboardState(dwKeyState);
  46         if (!pWnd->SendMessage(WM_APP_OLE_DD_ENTER,(WPARAM)&Info))
  47                 pWnd->GetParent()->SendMessage(WM_APP_OLE_DD_ENTER,(WPARAM)&Info);
  48         return Info.GetDropEffect();
  49 }
  50
  51 DROPEFFECT CListDropTarget::OnDragOver( CWnd* pWnd, COleDataObject* pDataObject, DWORD dwKeyState, CPoint point )
  52 {
  53         // check if any image to draw
  54         if (GetDropImage() != NULL)
  55                 CUI_ImageDropTarget::OnDragOver(pWnd,pDataObject,dwKeyState,point);
  56         m_dwKeyboardState = dwKeyState;
  57         CDD_OleDropTargetInfo Info(pWnd->GetSafeHwnd(),point,pDataObject);
  58         Info.SetKeyboardState(dwKeyState);
  59         // this will fill in info with item if mouse over one
  60         CUIODListCtrl *pList = static_cast<CUIODListCtrl*>(pWnd);
  61         return pList ? pList->SelectCurrentTarget(&Info) : DROPEFFECT_NONE;
  62 }
  63
  64 BOOL CListDropTarget::OnDrop( CWnd* pWnd, COleDataObject* pDataObject, DROPEFFECT dropEffect, CPoint point )
  65 {
  66         CUI_ImageDropTarget::OnDrop(pWnd,pDataObject,dropEffect,point);
  67
  68         TRACE0("CListDropTraget - OnDrop\n");
  69         // should be list control
  70         CUIODListCtrl *pList = static_cast<CUIODListCtrl*>(pWnd);
  71         if (pList != NULL)
  72         {
  73                 UINT flags;
  74                 int iItem = pList->HitTest(point, &flags);
  75                 CDD_OleDropTargetInfo Info(pWnd->GetSafeHwnd(),point,pDataObject);
  76                 Info.SetDropEffect(dropEffect);
  77                 Info.SetItem(iItem);
  78                 Info.SetKeyboardState(m_dwKeyboardState);
  79                 // alert control first otherwise parent
  80                 if (!pWnd->SendMessage(WM_APP_OLE_DD_DROP,(WPARAM)&Info))
  81                         return pWnd->GetParent()->SendMessage(WM_APP_OLE_DD_DROP,(WPARAM)&Info);
  82         }
  83         return CUI_ImageDropTarget::OnDrop(pWnd,pDataObject,dropEffect,point);
  84 }
  85
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