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wxDataObject changes - ok for MSW, still not for GTK/Motif/...

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4090 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
1999-10-21 01:58:57 +00:00
parent e1ee679c2e
commit 9e2896e5c8
17 changed files with 852 additions and 589 deletions
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70
include/wx/msw/ole/droptgt.h
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@@ -9,9 +9,6 @@
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
// ============================================================================
// prolog
// ============================================================================
#ifndef _WX_OLEDROPTGT_H
#define _WX_OLEDROPTGT_H
@@ -20,12 +17,13 @@
#endif
#if !wxUSE_DRAG_AND_DROP
#error "You should #define wxUSE_DRAG_AND_DROP to 1 to compile this file!"
#error "You should #define wxUSE_DRAG_AND_DROP to 1 to compile this file!"
#endif //WX_DRAG_DROP
// ----------------------------------------------------------------------------
// forward declarations
// ----------------------------------------------------------------------------
class wxIDropTarget;
struct IDataObject;
@@ -38,11 +36,12 @@ struct IDataObject;
// your own class from it implementing pure virtual function in order to use it
// (all of them, including protected ones which are called by the class itself)
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxDropTarget
class WXDLLEXPORT wxDropTarget : public wxDropTargetBase
{
public:
// ctor & dtor
wxDropTarget();
wxDropTarget(wxDataObject *dataObject = NULL);
virtual ~wxDropTarget();
// normally called by wxWindow on window creation/destruction, but might be
@@ -50,62 +49,57 @@ public:
bool Register(WXHWND hwnd);
void Revoke(WXHWND hwnd);
// provide default implementation for base class pure virtuals
virtual bool OnDrop(wxCoord x, wxCoord y);
virtual bool GetData();
// implementation only from now on
// -------------------------------
// do we accept this kind of data?
virtual bool IsAcceptedData(IDataObject *pIDataSource) const;
bool IsAcceptedData(IDataObject *pIDataSource) const;
// called when mouse enters/leaves the window: might be used to give
// some visual feedback to the user
virtual void OnEnter() { }
virtual void OnLeave() { }
// this function is called when data is dropped.
// (x, y) are the coordinates of the drop
virtual bool OnDrop(long x, long y, const void *pData) = 0;
protected:
// Override these to indicate what kind of data you support: the first
// format to which data can be converted is used. The classes below show
// how it can be done in the simplest cases.
// how many different (clipboard) formats do you support?
virtual size_t GetFormatCount() const = 0;
// return the n-th supported format
virtual wxDataFormat GetFormat(size_t n) const = 0;
// give us the data source from IDropTarget::Drop() - this is later used by
// GetData() when it's called from inside OnData()
void SetDataSource(IDataObject *pIDataSource);
private:
wxIDropTarget *m_pIDropTarget; // the pointer to COM interface
// helper used by IsAcceptedData() and GetData()
wxDataFormat GetSupportedFormat(IDataObject *pIDataSource) const;
wxIDropTarget *m_pIDropTarget; // the pointer to our COM interface
IDataObject *m_pIDataSource; // the pointer to the source data object
};
// ----------------------------------------------------------------------------
// A simple wxDropTarget derived class for text data: you only need to
// override OnDropText() to get something working
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxTextDropTarget : public wxDropTarget
{
public:
virtual bool OnDrop(long x, long y, const void *pData);
virtual bool OnDropText(long x, long y, const wxChar *psz) = 0;
wxTextDropTarget();
protected:
virtual size_t GetFormatCount() const;
virtual wxDataFormat GetFormat(size_t n) const;
virtual bool OnDropText(wxCoord x, wxCoord y, const wxString& text) = 0;
virtual bool OnData(wxCoord x, wxCoord y);
};
// ----------------------------------------------------------------------------
// A drop target which accepts files (dragged from File Manager or Explorer)
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxFileDropTarget : public wxDropTarget
{
public:
virtual bool OnDrop(long x, long y, const void *pData);
wxFileDropTarget();
// params: the number of files and the array of file names
virtual bool OnDropFiles(long x, long y,
size_t nFiles, const wxChar * const aszFiles[]) = 0;
// parameters are the number of files and the array of file names
virtual bool OnDropFiles(wxCoord x, wxCoord y,
const wxArrayString& filenames) = 0;
protected:
virtual size_t GetFormatCount() const;
virtual wxDataFormat GetFormat(size_t n) const;
virtual bool OnData(wxCoord x, wxCoord y);
};
// ============================================================================
#endif //_WX_OLEDROPTGT_H