forked from enlightenment/efl
130 lines
3.3 KiB
C
Executable File
130 lines
3.3 KiB
C
Executable File
#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <windows.h>
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#include "Ecore_Win32.h"
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#include "ecore_win32_private.h"
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static int _ecore_win32_dnd_init_count = 0;
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static HANDLE DataToHandle(const char *data, int size)
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{
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char *ptr;
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ptr = (char *)GlobalAlloc(GMEM_FIXED, size);
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memcpy(ptr, data, size);
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return ptr;
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}
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int
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ecore_win32_dnd_init()
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{
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if (_ecore_win32_dnd_init_count > 0)
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{
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_ecore_win32_dnd_init_count++;
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return _ecore_win32_dnd_init_count;
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}
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if (OleInitialize(NULL) != S_OK)
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return 0;
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_ecore_win32_dnd_init_count++;
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return _ecore_win32_dnd_init_count;
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}
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int ecore_win32_dnd_shutdown()
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{
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_ecore_win32_dnd_init_count--;
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if (_ecore_win32_dnd_init_count > 0) return _ecore_win32_dnd_init_count;
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OleUninitialize();
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if (_ecore_win32_dnd_init_count < 0) _ecore_win32_dnd_init_count = 0;
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return _ecore_win32_dnd_init_count;
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}
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int ecore_win32_dnd_begin(const char *data,
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int size)
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{
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IDataObject *pDataObject = NULL;
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IDropSource *pDropSource = NULL;
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FORMATETC fmtetc = { CF_TEXT, 0, DVASPECT_CONTENT, -1, TYMED_HGLOBAL };
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STGMEDIUM stgmed = { TYMED_HGLOBAL, { 0 }, 0 };
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int res = 0;
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if (!data)
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return 0;
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if (size < 0)
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size = strlen(data) + 1;
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stgmed.hGlobal = DataToHandle(data, size);
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// create the data object
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pDataObject = (IDataObject *)_ecore_win32_dnd_data_object_new((void *)&fmtetc,
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(void *)&stgmed,
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1);
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pDropSource = (IDropSource *)_ecore_win32_dnd_drop_source_new();
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if (pDataObject && pDropSource)
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{
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DWORD dwResult;
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DWORD dwEffect = DROPEFFECT_COPY;
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// do the drag-drop!
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dwResult = DoDragDrop(pDataObject, pDropSource, DROPEFFECT_COPY, &dwEffect);
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// finished. Check the return values to see if we need to do anything else
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if (dwResult == DRAGDROP_S_DROP)
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{
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//printf(">>> \"%s\" Dropped <<<\n", str);
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if(dwEffect == DROPEFFECT_MOVE)
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{
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// remove the data we just dropped from active document
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}
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}
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//else if (dwResult == DRAGDROP_S_CANCEL)
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// printf("DND cancelled\n");
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//else
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// printf("DND error\n");
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res = 1;
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}
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_ecore_win32_dnd_data_object_free(pDataObject);
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_ecore_win32_dnd_drop_source_free(pDropSource);
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// cleanup
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ReleaseStgMedium(&stgmed);
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return (int)res;
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}
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int ecore_win32_dnd_register_drop_target(Ecore_Win32_Window *window,
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Ecore_Win32_Dnd_DropTarget_Callback callback)
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{
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struct _Ecore_Win32_Window *wnd = (struct _Ecore_Win32_Window *)window;
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if (!window)
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return 0;
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wnd->dnd_drop_target = _ecore_win32_dnd_register_drop_window(wnd->window,
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callback,
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(void *)wnd);
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return (int)(!!wnd->dnd_drop_target);
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}
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void ecore_win32_dnd_unregister_drop_target(Ecore_Win32_Window *window)
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{
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struct _Ecore_Win32_Window *wnd = (struct _Ecore_Win32_Window *)window;
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if (!window)
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return;
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if (wnd->dnd_drop_target)
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_ecore_win32_dnd_unregister_drop_window(wnd->window, wnd->dnd_drop_target);
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}
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