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[OLE32] Implement WS_EX_ACCEPTFILES (#1403)

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The window that has WS_EX_ACCEPTFILES extended style, should pretend like a drop target that accepts CF_HDROP data. CORE-11238
This commit is contained in:
Katayama Hirofumi MZ 2019-03-15 22:31:13 +09:00 committed by GitHub
parent 8d75f93cbc
commit 332ca5f572
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 143 additions and 0 deletions
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143
dll/win32/ole32/ole2.c
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@ -70,6 +70,9 @@ typedef struct tagTrackerWindowInfo
BOOL escPressed;
HWND curTargetHWND; /* window the mouse is hovering over */
IDropTarget* curDragTarget;
#ifdef __REACTOS__
HWND accepterHWND;
#endif
POINTL curMousePos; /* current position of the mouse in screen coordinates */
DWORD dwKeyState; /* current state of the shift and ctrl keys and the mouse buttons */
} TrackerWindowInfo;
@ -293,6 +296,12 @@ static inline BOOL is_droptarget(HWND hwnd)
return get_droptarget_handle(hwnd) != 0;
}
#ifdef __REACTOS__
static inline BOOL is_acceptfiles(HWND hwnd)
{
return !!(GetWindowLong(hwnd, GWL_EXSTYLE) & WS_EX_ACCEPTFILES);
}
#endif
/*************************************************************
* get_droptarget_local_handle
*
@ -772,6 +781,9 @@ HRESULT WINAPI DoDragDrop (
trackerInfo.escPressed = FALSE;
trackerInfo.curTargetHWND = 0;
trackerInfo.curDragTarget = 0;
#ifdef __REACTOS__
trackerInfo.accepterHWND = NULL;
#endif
hwndTrackWindow = CreateWindowW(OLEDD_DRAGTRACKERCLASS, trackerW,
WS_POPUP, CW_USEDEFAULT, CW_USEDEFAULT,
@ -2182,14 +2194,107 @@ static LRESULT WINAPI OLEDD_DragTrackerWindowProc(
return DefWindowProcW (hwnd, uMsg, wParam, lParam);
}
#ifdef __REACTOS__
static HRESULT WINAPI DefaultDragEnter(HWND hwndTarget,
IDataObject* pDataObj,
DWORD grfKeyState,
POINTL pt,
DWORD* pdwEffect)
{
HRESULT hr;
FORMATETC fme;
ZeroMemory(&fme, sizeof(fme));
fme.cfFormat = CF_HDROP;
fme.ptd = NULL;
fme.dwAspect = DVASPECT_CONTENT;
fme.lindex = -1;
fme.tymed = TYMED_HGLOBAL;
hr = pDataObj->lpVtbl->QueryGetData(pDataObj, &fme);
*pdwEffect = SUCCEEDED(hr) ? DROPEFFECT_COPY : DROPEFFECT_NONE;
if (*pdwEffect == DROPEFFECT_NONE)
return DRAGDROP_S_CANCEL;
return S_OK;
}
static HRESULT WINAPI DefaultDrop(HWND hwndAccepter,
IDataObject* pDataObj,
DWORD grfKeyState,
POINTL pt,
DWORD* pdwEffect)
{
FORMATETC fme;
STGMEDIUM stgm;
HRESULT hr;
HGLOBAL hGlobal = NULL;
ZeroMemory(&fme, sizeof(fme));
fme.cfFormat = CF_HDROP;
fme.ptd = NULL;
fme.dwAspect = DVASPECT_CONTENT;
fme.lindex = -1;
fme.tymed = TYMED_HGLOBAL;
hr = pDataObj->lpVtbl->QueryGetData(pDataObj, &fme);
if (FAILED(hr))
return hr;
ZeroMemory(&stgm, sizeof(stgm));
hr = pDataObj->lpVtbl->GetData(pDataObj, &fme, &stgm);
if (SUCCEEDED(hr))
{
hGlobal = stgm.DUMMYUNIONNAME.hGlobal;
if (hGlobal)
{
if (IsWindowUnicode(hwndAccepter))
PostMessageW(hwndAccepter, WM_DROPFILES, (WPARAM)hGlobal, 0);
else
PostMessageA(hwndAccepter, WM_DROPFILES, (WPARAM)hGlobal, 0);
}
ReleaseStgMedium(&stgm);
}
return hr;
}
#endif
static void drag_enter( TrackerWindowInfo *info, HWND new_target )
{
HRESULT hr;
#ifdef __REACTOS__
DWORD dwEffect = *info->pdwEffect;
#endif
info->curTargetHWND = new_target;
#ifdef __REACTOS__
info->accepterHWND = NULL;
while (new_target && !is_droptarget( new_target ))
{
if (is_acceptfiles(new_target))
{
dwEffect = info->dwOKEffect;
hr = DefaultDragEnter(new_target, info->dataObject,
info->dwKeyState, info->curMousePos,
&dwEffect);
dwEffect &= info->dwOKEffect;
if (hr == S_OK)
{
info->accepterHWND = new_target;
info->curDragTarget = NULL;
*info->pdwEffect = dwEffect;
return;
}
}
new_target = GetParent( new_target );
}
#else
while (new_target && !is_droptarget( new_target ))
new_target = GetParent( new_target );
#endif
info->curDragTarget = get_droptarget_pointer( new_target );
@ -2207,6 +2312,9 @@ static void drag_enter( TrackerWindowInfo *info, HWND new_target )
IDropTarget_Release( info->curDragTarget );
info->curDragTarget = NULL;
info->curTargetHWND = NULL;
#ifdef __REACTOS__
info->accepterHWND = NULL;
#endif
}
}
}
@ -2239,6 +2347,27 @@ static void drag_end( TrackerWindowInfo *info )
IDropTarget_Release( info->curDragTarget );
info->curDragTarget = NULL;
}
#ifdef __REACTOS__
else if (info->accepterHWND)
{
if (info->returnValue == DRAGDROP_S_DROP &&
*info->pdwEffect != DROPEFFECT_NONE)
{
*info->pdwEffect = info->dwOKEffect;
hr = DefaultDrop(info->accepterHWND, info->dataObject, info->dwKeyState,
info->curMousePos, info->pdwEffect);
*info->pdwEffect &= info->dwOKEffect;
if (FAILED( hr ))
info->returnValue = hr;
}
else
{
*info->pdwEffect = DROPEFFECT_NONE;
}
info->accepterHWND = NULL;
}
#endif
else
*info->pdwEffect = DROPEFFECT_NONE;
}
@ -2249,8 +2378,13 @@ static HRESULT give_feedback( TrackerWindowInfo *info )
int res;
HCURSOR cur;
#ifdef __REACTOS__
if (info->curDragTarget == NULL && info->accepterHWND == NULL)
*info->pdwEffect = DROPEFFECT_NONE;
#else
if (info->curDragTarget == NULL)
*info->pdwEffect = DROPEFFECT_NONE;
#endif
hr = IDropSource_GiveFeedback( info->dropSource, *info->pdwEffect );
@ -2309,6 +2443,9 @@ static void OLEDD_TrackStateChange(TrackerWindowInfo* trackerInfo)
trackerInfo->curDragTarget = NULL;
trackerInfo->curTargetHWND = NULL;
}
#ifdef __REACTOS__
trackerInfo->accepterHWND = NULL;
#endif
if (hwndNewTarget)
drag_enter( trackerInfo, hwndNewTarget );
@ -2328,6 +2465,12 @@ static void OLEDD_TrackStateChange(TrackerWindowInfo* trackerInfo)
trackerInfo->pdwEffect);
*trackerInfo->pdwEffect &= trackerInfo->dwOKEffect;
}
#ifdef __REACTOS__
else if (trackerInfo->accepterHWND)
{
*trackerInfo->pdwEffect = trackerInfo->dwOKEffect;
}
#endif
give_feedback( trackerInfo );
}
else