OLE drop target for tree controls. More...
#include <treedroptarget.h>
Public Member Functions | |
TreeDropTarget (HWND hTargetWnd) | |
virtual bool | OnDrop (FORMATETC *pFmtEtc, STGMEDIUM &medium, DWORD *pdwEffect) |
virtual HRESULT STDMETHODCALLTYPE | DragOver (DWORD grfKeyState, POINTL pt, DWORD __RPC_FAR *pdwEffect) |
virtual HRESULT STDMETHODCALLTYPE | DragLeave (void) |
OLE drop target for tree controls.
Definition at line 13 of file treedroptarget.h.
TreeDropTarget::TreeDropTarget | ( | HWND | hTargetWnd ) | [inline] |
Definition at line 16 of file treedroptarget.h.
: IDropTargetImpl(hTargetWnd) {}
virtual HRESULT STDMETHODCALLTYPE TreeDropTarget::DragLeave | ( | void | ) | [inline, virtual] |
Reimplemented from IDropTargetImpl.
Definition at line 75 of file treedroptarget.h.
References IDropTargetImpl::m_hTargetWnd.
{ TreeView_SelectDropTarget(m_hTargetWnd, NULL); return IDropTargetImpl::DragLeave(); }
virtual HRESULT STDMETHODCALLTYPE TreeDropTarget::DragOver | ( | DWORD | grfKeyState, |
POINTL | pt, | ||
DWORD __RPC_FAR * | pdwEffect | ||
) | [inline, virtual] |
Reimplemented from IDropTargetImpl.
Definition at line 58 of file treedroptarget.h.
References IDropTargetImpl::m_hTargetWnd, and ScreenToClient().
{ TVHITTESTINFO hit; hit.pt = (POINT&)pt; ScreenToClient(m_hTargetWnd, &hit.pt); hit.flags = TVHT_ONITEM; HTREEITEM hItem = TreeView_HitTest(m_hTargetWnd,&hit); if (hItem != NULL) TreeView_SelectDropTarget(m_hTargetWnd, hItem); return IDropTargetImpl::DragOver(grfKeyState, pt, pdwEffect); }
virtual bool TreeDropTarget::OnDrop | ( | FORMATETC * | pFmtEtc, |
STGMEDIUM & | medium, | ||
DWORD * | pdwEffect | ||
) | [inline, virtual] |
Implements IDropTargetImpl.
Definition at line 18 of file treedroptarget.h.
References IDropTargetImpl::m_hTargetWnd.
{ if (pFmtEtc->cfFormat == CF_HDROP && medium.tymed == TYMED_HGLOBAL) { HDROP hDrop = (HDROP)GlobalLock(medium.hGlobal); if (hDrop != NULL) { TCHAR szFileName[MAX_PATH]; UINT cFiles = DragQueryFile(hDrop, 0xFFFFFFFF, NULL, 0); for(UINT i = 0; i < cFiles; ++i) { DragQueryFile(hDrop, i, szFileName, sizeof(szFileName)); if (DROPEFFECT_COPY & *pdwEffect) { // copy the file or dir ///@todo Add the code to handle Copy } else if (DROPEFFECT_MOVE & *pdwEffect) { // move the file or dir ///@todo Add the code to handle Move } } //DragFinish(hDrop); // base class calls ReleaseStgMedium } GlobalUnlock(medium.hGlobal); } TreeView_SelectDropTarget(m_hTargetWnd, NULL); return true; //let base free the medium }
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