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Provide stand-in IDropTargetHelper definition to fix VC6 build.

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VC6 SDK doesn't define this interface, so do it ourselves to fix its build
after the changes of r72668.

See #14697.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72673 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2012-10-14 14:42:58 +00:00
parent 1dc17bcafb
commit 4d604ad397
2 changed files with 27 additions and 3 deletions
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4
include/wx/msw/ole/droptgt.h
View File

@@ -19,7 +19,7 @@
// ----------------------------------------------------------------------------
class wxIDropTarget;
struct IDropTargetHelper;
struct wxIDropTargetHelper;
struct IDataObject;
// ----------------------------------------------------------------------------
@@ -80,7 +80,7 @@ private:
wxIDropTarget *m_pIDropTarget; // the pointer to our COM interface
IDataObject *m_pIDataSource; // the pointer to the source data object
IDropTargetHelper *m_dropTargetHelper; // the pointer to the drop target helper
wxIDropTargetHelper *m_dropTargetHelper; // the drop target helper
wxDECLARE_NO_COPY_CLASS(wxDropTarget);
};

26
src/msw/ole/droptgt.cpp
View File

@@ -50,6 +50,30 @@
#include "wx/msw/ole/oleutils.h"
#include <initguid.h>
// Some (very) old SDKs don't define IDropTargetHelper, so define our own
// version of it here.
struct wxIDropTargetHelper : public IUnknown
{
virtual HRESULT STDMETHODCALLTYPE DragEnter(HWND hwndTarget,
IDataObject *pDataObject,
POINT *ppt,
DWORD dwEffect) = 0;
virtual HRESULT STDMETHODCALLTYPE DragLeave() = 0;
virtual HRESULT STDMETHODCALLTYPE DragOver(POINT *ppt, DWORD dwEffect) = 0;
virtual HRESULT STDMETHODCALLTYPE Drop(IDataObject *pDataObject,
POINT *ppt,
DWORD dwEffect) = 0;
virtual HRESULT STDMETHODCALLTYPE Show(BOOL fShow) = 0;
};
namespace
{
DEFINE_GUID(wxIID_IDropTargetHelper,
0x4657278B,0x411B,0x11D2,0x83,0x9A,0x00,0xC0,0x4F,0xD9,0x18,0xD0);
}
// ----------------------------------------------------------------------------
// IDropTarget interface: forward all interesting things to wxDropTarget
// (the name is unfortunate, but wx_I_DropTarget is not at all the same thing
@@ -581,7 +605,7 @@ wxDropTarget::MSWInitDragImageSupport()
{
// Use the default drop target helper to show shell drag images
CoCreateInstance(CLSID_DragDropHelper, NULL, CLSCTX_INPROC_SERVER,
IID_IDropTargetHelper, (LPVOID*)&m_dropTargetHelper);
wxIID_IDropTargetHelper, (LPVOID*)&m_dropTargetHelper);
}
void