// Created:
// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// Licence: wxWindows license
+// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
// ============================================================================
// headers
// ----------------------------------------------------------------------------
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "droptgt.h"
#endif
#include "wx/setup.h"
-#if wxUSE_DRAG_AND_DROP
+#if wxUSE_OLE && wxUSE_DRAG_AND_DROP
+#include "wx/msw/private.h"
#include "wx/log.h"
+#ifdef __WXWINCE__
+ #include <winreg.h>
+ #include <ole2.h>
+#endif
+
#ifdef __WIN32__
- #ifndef __GNUWIN32__
+ #if !defined(__GNUWIN32__) || wxUSE_NORLANDER_HEADERS
+ #if wxCHECK_W32API_VERSION( 1, 0 )
+ #include "wx/msw/wrapwin.h"
+ #endif
#include <shlobj.h> // for DROPFILES structure
#endif
#else
#include "wx/dnd.h"
-#ifndef __WIN32__
- #include <ole2.h>
- #include <olestd.h>
-#endif
-
#include "wx/msw/ole/oleutils.h"
// ----------------------------------------------------------------------------
{
public:
wxIDropTarget(wxDropTarget *p);
- // suppress gcc warning
-#ifdef __GNUG__
- virtual
-#endif
- ~wxIDropTarget();
+ virtual ~wxIDropTarget();
// accessors for wxDropTarget
void SetHwnd(HWND hwnd) { m_hwnd = hwnd; }
HWND m_hwnd; // window we're associated with
// get default drop effect for given keyboard flags
- static inline DWORD GetDropEffect(DWORD flags);
+ static inline DWORD GetDropEffect(DWORD flags, wxDragResult defaultAction);
+
+ DECLARE_NO_COPY_CLASS(wxIDropTarget)
};
// ----------------------------------------------------------------------------
// Notes : We do "move" normally and "copy" if <Ctrl> is pressed,
// which is the standard behaviour (currently there is no
// way to redefine it)
-DWORD wxIDropTarget::GetDropEffect(DWORD flags)
+DWORD wxIDropTarget::GetDropEffect(DWORD flags, wxDragResult defaultAction)
{
+ if (defaultAction == wxDragCopy)
+ return flags & MK_SHIFT ? DROPEFFECT_MOVE : DROPEFFECT_COPY;
return flags & MK_CONTROL ? DROPEFFECT_COPY : DROPEFFECT_MOVE;
}
wxIDropTarget::wxIDropTarget(wxDropTarget *pTarget)
{
- m_cRef = 0;
m_pTarget = pTarget;
m_pIDataObject = NULL;
}
POINTL pt,
DWORD *pdwEffect)
{
- wxLogDebug(wxT("IDropTarget::DragEnter"));
+ wxLogTrace(wxTRACE_OleCalls, wxT("IDropTarget::DragEnter"));
+
+ wxASSERT_MSG( m_pIDataObject == NULL,
+ _T("drop target must have data object") );
+
+ // show the list of formats supported by the source data object for the
+ // debugging purposes, this is quite useful sometimes - please don't remove
+#if 0
+ IEnumFORMATETC *penumFmt;
+ if ( SUCCEEDED(pIDataSource->EnumFormatEtc(DATADIR_GET, &penumFmt)) )
+ {
+ FORMATETC fmt;
+ while ( penumFmt->Next(1, &fmt, NULL) == S_OK )
+ {
+ wxLogDebug(_T("Drop source supports format %s"),
+ wxDataObject::GetFormatName(fmt.cfFormat));
+ }
- wxASSERT( m_pIDataObject == NULL );
+ penumFmt->Release();
+ }
+ else
+ {
+ wxLogLastError(_T("IDataObject::EnumFormatEtc"));
+ }
+#endif // 0
if ( !m_pTarget->IsAcceptedData(pIDataSource) ) {
// we don't accept this kind of data
// we need client coordinates to pass to wxWin functions
if ( !ScreenToClient(m_hwnd, (POINT *)&pt) )
{
- wxLogLastError("ScreenToClient");
+ wxLogLastError(wxT("ScreenToClient"));
}
// give some visual feedback
*pdwEffect = ConvertDragResultToEffect(
- m_pTarget->OnEnter(pt.x, pt.y,
- ConvertDragEffectToResult(GetDropEffect(grfKeyState))
+ m_pTarget->OnEnter(pt.x, pt.y, ConvertDragEffectToResult(
+ GetDropEffect(grfKeyState, m_pTarget->GetDefaultAction()))
)
);
wxDragResult result;
if ( m_pIDataObject ) {
- result = ConvertDragEffectToResult(GetDropEffect(grfKeyState));
+ result = ConvertDragEffectToResult(
+ GetDropEffect(grfKeyState, m_pTarget->GetDefaultAction()));
}
else {
// can't accept data anyhow normally
// we need client coordinates to pass to wxWin functions
if ( !ScreenToClient(m_hwnd, (POINT *)&pt) )
{
- wxLogLastError("ScreenToClient");
+ wxLogLastError(wxT("ScreenToClient"));
}
*pdwEffect = ConvertDragResultToEffect(
// Notes : good place to do any clean-up
STDMETHODIMP wxIDropTarget::DragLeave()
{
- wxLogDebug(wxT("IDropTarget::DragLeave"));
+ wxLogTrace(wxTRACE_OleCalls, wxT("IDropTarget::DragLeave"));
// remove the UI feedback
m_pTarget->OnLeave();
POINTL pt,
DWORD *pdwEffect)
{
- wxLogDebug(wxT("IDropTarget::Drop"));
+ wxLogTrace(wxTRACE_OleCalls, wxT("IDropTarget::Drop"));
// TODO I don't know why there is this parameter, but so far I assume
// that it's the same we've already got in DragEnter
// we need client coordinates to pass to wxWin functions
if ( !ScreenToClient(m_hwnd, (POINT *)&pt) )
{
- wxLogLastError("ScreenToClient");
+ wxLogLastError(wxT("ScreenToClient"));
}
// first ask the drop target if it wants data
m_pTarget->SetDataSource(pIDataSource);
// and now it has the data
- wxDragResult rc = ConvertDragEffectToResult(GetDropEffect(grfKeyState));
+ wxDragResult rc = ConvertDragEffectToResult(
+ GetDropEffect(grfKeyState, m_pTarget->GetDefaultAction()));
rc = m_pTarget->OnData(pt.x, pt.y, rc);
if ( wxIsDragResultOk(rc) ) {
// operation succeeded
}
//else: *pdwEffect is already DROPEFFECT_NONE
}
- //else: OnDrop() returned FALSE, no need to copy data
+ //else: OnDrop() returned false, no need to copy data
// release the held object
RELEASE_AND_NULL(m_pIDataObject);
bool wxDropTarget::Register(WXHWND hwnd)
{
- HRESULT hr = ::CoLockObjectExternal(m_pIDropTarget, TRUE, FALSE);
+ // FIXME
+ // RegisterDragDrop not available on Windows CE >= 400?
+ // Or maybe we can dynamically load them from ceshell.dll
+ // or similar.
+#if defined(__WXWINCE__) && _WIN32_WCE >= 400
+ wxUnusedVar(hwnd);
+ return false;
+#else
+ HRESULT hr;
+
+ // May exist in later WinCE versions
+#ifndef __WXWINCE__
+ hr = ::CoLockObjectExternal(m_pIDropTarget, TRUE, FALSE);
if ( FAILED(hr) ) {
- wxLogApiError("CoLockObjectExternal", hr);
- return FALSE;
+ wxLogApiError(wxT("CoLockObjectExternal"), hr);
+ return false;
}
+#endif
hr = ::RegisterDragDrop((HWND) hwnd, m_pIDropTarget);
if ( FAILED(hr) ) {
+ // May exist in later WinCE versions
+#ifndef __WXWINCE__
::CoLockObjectExternal(m_pIDropTarget, FALSE, FALSE);
-
- wxLogApiError("RegisterDragDrop", hr);
- return FALSE;
+#endif
+ wxLogApiError(wxT("RegisterDragDrop"), hr);
+ return false;
}
// we will need the window handle for coords transformation later
m_pIDropTarget->SetHwnd((HWND)hwnd);
- return TRUE;
+ return true;
+#endif
}
void wxDropTarget::Revoke(WXHWND hwnd)
{
+#if defined(__WXWINCE__) && _WIN32_WCE >= 400
+ // Not available, see note above
+ wxUnusedVar(hwnd);
+#else
HRESULT hr = ::RevokeDragDrop((HWND) hwnd);
if ( FAILED(hr) ) {
- wxLogApiError("RevokeDragDrop", hr);
+ wxLogApiError(wxT("RevokeDragDrop"), hr);
}
+ // May exist in later WinCE versions
+#ifndef __WXWINCE__
::CoLockObjectExternal(m_pIDropTarget, FALSE, TRUE);
+#endif
m_pIDropTarget->SetHwnd(0);
+#endif
}
// ----------------------------------------------------------------------------
// base class pure virtuals
// ----------------------------------------------------------------------------
-// OnDrop() is called only if we previously returned TRUE from
+// OnDrop() is called only if we previously returned true from
// IsAcceptedData(), so no need to check anything here
bool wxDropTarget::OnDrop(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y))
{
- return TRUE;
+ return true;
}
// copy the data from the data source to the target data object
// this is strange because IsAcceptedData() succeeded previously!
wxFAIL_MSG(wxT("strange - did supported formats list change?"));
- return FALSE;
+ return false;
}
STGMEDIUM stm;
fmtMemory.lindex = -1;
fmtMemory.tymed = TYMED_HGLOBAL; // TODO to add other media
- bool rc = FALSE;
+ bool rc = false;
HRESULT hr = m_pIDataSource->GetData(&fmtMemory, &stm);
if ( SUCCEEDED(hr) ) {
hr = dataObject->SetData(&fmtMemory, &stm, TRUE);
if ( SUCCEEDED(hr) ) {
- rc = TRUE;
+ rc = true;
}
else {
- wxLogLastError("IDataObject::SetData()");
+ wxLogApiError(wxT("IDataObject::SetData()"), hr);
}
}
else {
- wxLogLastError("IDataObject::GetData()");
+ wxLogApiError(wxT("IDataObject::GetData()"), hr);
}
return rc;
// get the list of supported formats
size_t nFormats = m_dataObject->GetFormatCount(wxDataObject::Set);
- wxDataFormat format, *formats;
+ wxDataFormat format;
+ wxDataFormat *formats;
formats = nFormats == 1 ? &format : new wxDataFormat[nFormats];
m_dataObject->GetAllFormats(formats, wxDataObject::Set);
case DROPEFFECT_COPY:
return wxDragCopy;
+ case DROPEFFECT_LINK:
+ return wxDragLink;
+
case DROPEFFECT_MOVE:
return wxDragMove;
case wxDragCopy:
return DROPEFFECT_COPY;
+ case wxDragLink:
+ return DROPEFFECT_LINK;
+
case wxDragMove:
return DROPEFFECT_MOVE;
projects / wxWidgets.git / blobdiff