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win32 drag-and-drop improvement.

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This commit is contained in:
jules 2011-11-23 11:48:21 +00:00
parent d564972e9f
commit cb3406d710
1 changed files with 19 additions and 7 deletions
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26
modules/juce_gui_basics/native/juce_win32_Windowing.cpp
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@ -1962,7 +1962,10 @@ private:
JUCE_COMRESULT DragEnter (IDataObject* pDataObject, DWORD grfKeyState, POINTL mousePos, DWORD* pdwEffect)
{
updateFileList (pDataObject);
HRESULT hr = updateFileList (pDataObject);
if (FAILED (hr))
return hr;
return DragOver (grfKeyState, mousePos, pdwEffect);
}
@ -1981,10 +1984,15 @@ private:
JUCE_COMRESULT Drop (IDataObject* pDataObject, DWORD /*grfKeyState*/, POINTL mousePos, DWORD* pdwEffect)
{
updateFileList (pDataObject);
const bool wasWanted = owner.handleFileDragDrop (files, getMousePos (mousePos));
*pdwEffect = wasWanted ? (DWORD) DROPEFFECT_COPY : (DWORD) DROPEFFECT_NONE;
return S_OK;
HRESULT hr = updateFileList (pDataObject);
if (SUCCEEDED (hr))
{
const bool wasWanted = owner.handleFileDragDrop (files, getMousePos (mousePos));
*pdwEffect = wasWanted ? (DWORD) DROPEFFECT_COPY : (DWORD) DROPEFFECT_NONE;
hr = S_OK;
}
return hr;
}
private:
@ -2015,14 +2023,16 @@ private:
}
}
void updateFileList (IDataObject* const pDataObject)
HRESULT updateFileList (IDataObject* const pDataObject)
{
files.clear();
FORMATETC format = { CF_HDROP, 0, DVASPECT_CONTENT, -1, TYMED_HGLOBAL };
STGMEDIUM medium = { TYMED_HGLOBAL, { 0 }, 0 };
if (pDataObject->GetData (&format, &medium) == S_OK)
HRESULT hr = pDataObject->GetData (&format, &medium);
if (SUCCEEDED (hr))
{
const SIZE_T totalLen = GlobalSize (medium.hGlobal);
const LPDROPFILES dropFiles = (const LPDROPFILES) GlobalLock (medium.hGlobal);
@ -2035,6 +2045,8 @@ private:
GlobalUnlock (medium.hGlobal);
}
return hr;
}
JUCE_DECLARE_NON_COPYABLE (JuceDropTarget);