forked from enlightenment/efl
93 lines
1.7 KiB
C++
93 lines
1.7 KiB
C++
/*
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* vim:ts=8:sw=3:sts=8:noexpandtab:cino=>5n-3f0^-2{2
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <assert.h>
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#include "ecore_win32_dnd_drop_source.h"
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#include "ecore_win32_private.h"
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// structors
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// reference count must ALWAYS start at 1
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DropSource::DropSource() : ref_count_(1)
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{ }
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// IUnknown
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HRESULT DropSource::QueryInterface(REFIID iid, void **ppvObject)
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{
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// check to see what interface has been requested
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if (iid == IID_IDropSource || iid == IID_IUnknown)
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{
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AddRef();
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*ppvObject = this;
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return S_OK;
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}
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*ppvObject = 0;
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return E_NOINTERFACE;
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}
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ULONG DropSource::AddRef()
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{
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return InterlockedIncrement(&ref_count_);
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}
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ULONG DropSource::Release()
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{
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LONG count = InterlockedDecrement(&ref_count_);
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if(count == 0)
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{
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delete this;
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return 0;
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}
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return count;
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}
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// IDropSource
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HRESULT DropSource::QueryContinueDrag(BOOL fEscapePressed, DWORD grfKeyState)
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{
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// if the Escape key has been pressed since the last call, cancel the drop
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if(fEscapePressed == TRUE)
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return DRAGDROP_S_CANCEL;
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// if the LeftMouse button has been released, then do the drop!
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if((grfKeyState & MK_LBUTTON) == 0)
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return DRAGDROP_S_DROP;
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// continue with the drag-drop
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return S_OK;
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}
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HRESULT DropSource::GiveFeedback(DWORD dwEffect EINA_UNUSED)
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{
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return DRAGDROP_S_USEDEFAULTCURSORS;
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}
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// ecore_win32 private functions
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void *_ecore_win32_dnd_drop_source_new()
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{
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IDropSource *object = new DropSource();
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assert(object != NULL);
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return object;
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}
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void _ecore_win32_dnd_drop_source_free(void *drop_source)
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{
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if (!drop_source)
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return;
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IDropSource *object = (IDropSource *)drop_source;
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object->Release();
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}
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