dlls/ole32/tests/dragdrop.c - wine - Git at Google

 /*
  * Drag and Drop Tests
  *
  * Copyright 2007 Robert Shearman
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */

 #define _WIN32_DCOM
 #define COBJMACROS
 #define CONST_VTABLE

 #include <stdarg.h>
 #include <stdio.h>

 #include "windef.h"
 #include "winbase.h"
 #include "objbase.h"

 #include "wine/test.h"

 static int droptarget_refs;

 /* helper macros to make tests a bit leaner */
 #define ok_ole_success(hr, func) ok(hr == S_OK, func " failed with error 0x%08x\n", hr)

 static HRESULT WINAPI DropTarget_QueryInterface(IDropTarget* iface, REFIID riid,
                                                 void** ppvObject)
 {
     ok(0, "DropTarget_QueryInterface() shouldn't be called\n");
     if (IsEqualIID(riid, &IID_IUnknown) ||
         IsEqualIID(riid, &IID_IDropTarget))
     {
         IDropTarget_AddRef(iface);
         *ppvObject = iface;
         return S_OK;
     }
     *ppvObject = NULL;
     return E_NOINTERFACE;
 }

 static ULONG WINAPI DropTarget_AddRef(IDropTarget* iface)
 {
     droptarget_refs++;
     return droptarget_refs;
 }

 static ULONG WINAPI DropTarget_Release(IDropTarget* iface)
 {
     droptarget_refs--;
     return droptarget_refs;
 }

 static HRESULT WINAPI DropTarget_DragEnter(IDropTarget* iface,
                                            IDataObject* pDataObj,
                                            DWORD grfKeyState, POINTL pt,
                                            DWORD* pdwEffect)
 {
     return E_NOTIMPL;
 }

 static HRESULT WINAPI DropTarget_DragOver(IDropTarget* iface,
                                           DWORD grfKeyState,
                                           POINTL pt,
                                           DWORD* pdwEffect)
 {
     return E_NOTIMPL;
 }

 static HRESULT WINAPI DropTarget_DragLeave(IDropTarget* iface)
 {
     return E_NOTIMPL;
 }

 static HRESULT WINAPI DropTarget_Drop(IDropTarget* iface,
                                       IDataObject* pDataObj, DWORD grfKeyState,
                                       POINTL pt, DWORD* pdwEffect)
 {
     return E_NOTIMPL;
 }

 static const IDropTargetVtbl DropTarget_VTbl =
 {
     DropTarget_QueryInterface,
     DropTarget_AddRef,
     DropTarget_Release,
     DropTarget_DragEnter,
     DropTarget_DragOver,
     DropTarget_DragLeave,
     DropTarget_Drop
 };

 static IDropTarget DropTarget = { &DropTarget_VTbl };

 /** stub IDropSource **/
 static HRESULT WINAPI DropSource_QueryInterface(IDropSource *iface, REFIID riid, void **ppObj)
 {
     if (IsEqualIID(riid, &IID_IUnknown) ||
         IsEqualIID(riid, &IID_IDropSource))
     {
         *ppObj = iface;
         IDropSource_AddRef(iface);
         return S_OK;
     }
     return E_NOINTERFACE;
 }

 static ULONG WINAPI DropSource_AddRef(IDropSource *iface)
 {
     return 2;
 }

 static ULONG WINAPI DropSource_Release(IDropSource *iface)
 {
     return 1;
 }

 static HRESULT WINAPI DropSource_QueryContinueDrag(
     IDropSource *iface,
     BOOL fEscapePressed,
     DWORD grfKeyState)
 {
     /* always drop */
     return DRAGDROP_S_DROP;
 }

 static HRESULT WINAPI DropSource_GiveFeedback(
     IDropSource *iface,
     DWORD dwEffect)
 {
     return DRAGDROP_S_USEDEFAULTCURSORS;
 }

 static const IDropSourceVtbl dropsource_vtbl = {
     DropSource_QueryInterface,
     DropSource_AddRef,
     DropSource_Release,
     DropSource_QueryContinueDrag,
     DropSource_GiveFeedback
 };

 static IDropSource DropSource = { &dropsource_vtbl };

 /** IDataObject stub **/
 static HRESULT WINAPI DataObject_QueryInterface(
     IDataObject *iface,
     REFIID riid,
     void **pObj)
 {
     if (IsEqualIID(riid, &IID_IUnknown) ||
         IsEqualIID(riid, &IID_IDataObject))
     {
         *pObj = iface;
         IDataObject_AddRef(iface);
         return S_OK;
     }
     return E_NOINTERFACE;
 }

 static ULONG WINAPI DataObject_AddRef(IDataObject *iface)
 {
     return 2;
 }

 static ULONG WINAPI DataObject_Release(IDataObject *iface)
 {
     return 1;
 }

 static HRESULT WINAPI DataObject_GetData(
     IDataObject *iface,
     FORMATETC *pformatetcIn,
     STGMEDIUM *pmedium)
 {
     return E_NOTIMPL;
 }

 static HRESULT WINAPI DataObject_GetDataHere(
     IDataObject *iface,
     FORMATETC *pformatetc,
     STGMEDIUM *pmedium)
 {
     return E_NOTIMPL;
 }

 static HRESULT WINAPI DataObject_QueryGetData(
     IDataObject *iface,
     FORMATETC *pformatetc)
 {
     return S_OK;
 }

 static HRESULT WINAPI DataObject_GetCanonicalFormatEtc(
     IDataObject *iface,
     FORMATETC *pformatectIn,
     FORMATETC *pformatetcOut)
 {
     return E_NOTIMPL;
 }

 static HRESULT WINAPI DataObject_SetData(
     IDataObject *iface,
     FORMATETC *pformatetc,
     STGMEDIUM *pmedium,
     BOOL fRelease)
 {
     return E_NOTIMPL;
 }

 static HRESULT WINAPI DataObject_EnumFormatEtc(
     IDataObject *iface,
     DWORD dwDirection,
     IEnumFORMATETC **ppenumFormatEtc)
 {
     return S_OK;
 }

 static HRESULT WINAPI DataObject_DAdvise(
     IDataObject *iface,
     FORMATETC *pformatetc,
     DWORD advf,
     IAdviseSink *pAdvSink,
     DWORD *pdwConnection)
 {
     return E_NOTIMPL;
 }

 static HRESULT WINAPI DataObject_DUnadvise(
     IDataObject *iface,
     DWORD dwConnection)
 {
     return E_NOTIMPL;
 }

 static HRESULT WINAPI DataObject_EnumDAdvise(
     IDataObject *iface,
     IEnumSTATDATA **ppenumAdvise)
 {
     return E_NOTIMPL;
 }

 static const IDataObjectVtbl dataobject_vtbl = {
     DataObject_QueryInterface,
     DataObject_AddRef,
     DataObject_Release,
     DataObject_GetData,
     DataObject_GetDataHere,
     DataObject_QueryGetData,
     DataObject_GetCanonicalFormatEtc,
     DataObject_SetData,
     DataObject_EnumFormatEtc,
     DataObject_DAdvise,
     DataObject_DUnadvise,
     DataObject_EnumDAdvise
 };

 static IDataObject DataObject = { &dataobject_vtbl };

 static ATOM register_dummy_class(void)
 {
     WNDCLASS wc =
     {
         0,
         DefWindowProc,
         0,
         0,
         GetModuleHandle(NULL),
         NULL,
         LoadCursor(NULL, IDC_ARROW),
         (HBRUSH)(COLOR_BTNFACE+1),
         NULL,
         TEXT("WineOleTestClass"),
     };

     return RegisterClass(&wc);
 }

 static void test_Register_Revoke(void)
 {
     HANDLE prop;
     HRESULT hr;
     HWND hwnd;

     hwnd = CreateWindowA("WineOleTestClass", "Test", 0,
         CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL,
         NULL, NULL, NULL);

     hr = RegisterDragDrop(hwnd, &DropTarget);
     ok(hr == E_OUTOFMEMORY ||
         broken(hr == CO_E_NOTINITIALIZED), /* NT4 */
         "RegisterDragDrop without OLE initialized should have returned E_OUTOFMEMORY instead of 0x%08x\n", hr);

     OleInitialize(NULL);

     hr = RegisterDragDrop(hwnd, NULL);
     ok(hr == E_INVALIDARG, "RegisterDragDrop with NULL IDropTarget * should return E_INVALIDARG instead of 0x%08x\n", hr);

     hr = RegisterDragDrop(NULL, &DropTarget);
     ok(hr == DRAGDROP_E_INVALIDHWND, "RegisterDragDrop with NULL hwnd should return DRAGDROP_E_INVALIDHWND instead of 0x%08x\n", hr);

     hr = RegisterDragDrop((HWND)0xdeadbeef, &DropTarget);
     ok(hr == DRAGDROP_E_INVALIDHWND, "RegisterDragDrop with garbage hwnd should return DRAGDROP_E_INVALIDHWND instead of 0x%08x\n", hr);

     ok(droptarget_refs == 0, "DropTarget refs should be zero not %d\n", droptarget_refs);
     hr = RegisterDragDrop(hwnd, &DropTarget);
     ok_ole_success(hr, "RegisterDragDrop");
     ok(droptarget_refs >= 1, "DropTarget refs should be at least one\n");

     prop = GetPropA(hwnd, "OleDropTargetInterface");
     ok(prop == &DropTarget, "expected IDropTarget pointer %p, got %p\n", &DropTarget, prop);

     hr = RegisterDragDrop(hwnd, &DropTarget);
     ok(hr == DRAGDROP_E_ALREADYREGISTERED, "RegisterDragDrop with already registered hwnd should return DRAGDROP_E_ALREADYREGISTERED instead of 0x%08x\n", hr);

     ok(droptarget_refs >= 1, "DropTarget refs should be at least one\n");
     OleUninitialize();
     ok(droptarget_refs >= 1, "DropTarget refs should be at least one\n");

     hr = RevokeDragDrop(hwnd);
     ok_ole_success(hr, "RevokeDragDrop");
     ok(droptarget_refs == 0 ||
        broken(droptarget_refs == 1), /* NT4 */
        "DropTarget refs should be zero not %d\n", droptarget_refs);

     hr = RevokeDragDrop(NULL);
     ok(hr == DRAGDROP_E_INVALIDHWND, "RevokeDragDrop with NULL hwnd should return DRAGDROP_E_INVALIDHWND instead of 0x%08x\n", hr);

     DestroyWindow(hwnd);

     /* try to revoke with already destroyed window */
     OleInitialize(NULL);

     hwnd = CreateWindowA("WineOleTestClass", "Test", 0,
         CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL,
         NULL, NULL, NULL);

     hr = RegisterDragDrop(hwnd, &DropTarget);
     ok(hr == S_OK, "got 0x%08x\n", hr);

     DestroyWindow(hwnd);

     hr = RevokeDragDrop(hwnd);
     ok(hr == DRAGDROP_E_INVALIDHWND, "got 0x%08x\n", hr);

     OleUninitialize();
 }

 static void test_DoDragDrop(void)
 {
     DWORD effect;
     HRESULT hr;
     HWND hwnd;

     hwnd = CreateWindowA("WineOleTestClass", "Test", 0,
         CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL,
         NULL, NULL, NULL);
     ok(IsWindow(hwnd), "failed to create window\n");

     hr = OleInitialize(NULL);
     ok(hr == S_OK, "got 0x%08x\n", hr);

     hr = RegisterDragDrop(hwnd, &DropTarget);
     ok(hr == S_OK, "got 0x%08x\n", hr);

     /* incomplete arguments set */
     hr = DoDragDrop(NULL, NULL, 0, NULL);
     ok(hr == E_INVALIDARG, "got 0x%08x\n", hr);

     hr = DoDragDrop(NULL, &DropSource, 0, NULL);
     ok(hr == E_INVALIDARG, "got 0x%08x\n", hr);

     hr = DoDragDrop(&DataObject, NULL, 0, NULL);
     ok(hr == E_INVALIDARG, "got 0x%08x\n", hr);

     hr = DoDragDrop(NULL, NULL, 0, &effect);
     ok(hr == E_INVALIDARG, "got 0x%08x\n", hr);

     hr = DoDragDrop(&DataObject, &DropSource, 0, NULL);
     ok(hr == E_INVALIDARG, "got 0x%08x\n", hr);

     hr = DoDragDrop(NULL, &DropSource, 0, &effect);
     ok(hr == E_INVALIDARG, "got 0x%08x\n", hr);

     hr = DoDragDrop(&DataObject, NULL, 0, &effect);
     ok(hr == E_INVALIDARG, "got 0x%08x\n", hr);

     OleUninitialize();

     DestroyWindow(hwnd);
 }

 START_TEST(dragdrop)
 {
     register_dummy_class();

     test_Register_Revoke();
     test_DoDragDrop();
 }
	/*
	* Drag and Drop Tests
	*
	* Copyright 2007 Robert Shearman
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* This library is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with this library; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
	*/

	#define _WIN32_DCOM
	#define COBJMACROS
	#define CONST_VTABLE

	#include <stdarg.h>
	#include <stdio.h>

	#include "windef.h"
	#include "winbase.h"
	#include "objbase.h"

	#include "wine/test.h"

	static int droptarget_refs;

	/* helper macros to make tests a bit leaner */
	#define ok_ole_success(hr, func) ok(hr == S_OK, func " failed with error 0x%08x\n", hr)

	static HRESULT WINAPI DropTarget_QueryInterface(IDropTarget* iface, REFIID riid,
	void** ppvObject)
	{
	ok(0, "DropTarget_QueryInterface() shouldn't be called\n");
	if (IsEqualIID(riid, &IID_IUnknown) \|\|
	IsEqualIID(riid, &IID_IDropTarget))
	{
	IDropTarget_AddRef(iface);
	*ppvObject = iface;
	return S_OK;
	}
	*ppvObject = NULL;
	return E_NOINTERFACE;
	}

	static ULONG WINAPI DropTarget_AddRef(IDropTarget* iface)
	{
	droptarget_refs++;
	return droptarget_refs;
	}

	static ULONG WINAPI DropTarget_Release(IDropTarget* iface)
	{
	droptarget_refs--;
	return droptarget_refs;
	}

	static HRESULT WINAPI DropTarget_DragEnter(IDropTarget* iface,
	IDataObject* pDataObj,
	DWORD grfKeyState, POINTL pt,
	DWORD* pdwEffect)
	{
	return E_NOTIMPL;
	}

	static HRESULT WINAPI DropTarget_DragOver(IDropTarget* iface,
	DWORD grfKeyState,
	POINTL pt,
	DWORD* pdwEffect)
	{
	return E_NOTIMPL;
	}

	static HRESULT WINAPI DropTarget_DragLeave(IDropTarget* iface)
	{
	return E_NOTIMPL;
	}

	static HRESULT WINAPI DropTarget_Drop(IDropTarget* iface,
	IDataObject* pDataObj, DWORD grfKeyState,
	POINTL pt, DWORD* pdwEffect)
	{
	return E_NOTIMPL;
	}

	static const IDropTargetVtbl DropTarget_VTbl =
	{
	DropTarget_QueryInterface,
	DropTarget_AddRef,
	DropTarget_Release,
	DropTarget_DragEnter,
	DropTarget_DragOver,
	DropTarget_DragLeave,
	DropTarget_Drop
	};

	static IDropTarget DropTarget = { &DropTarget_VTbl };

	/ stub IDropSource /
	static HRESULT WINAPI DropSource_QueryInterface(IDropSource iface, REFIID riid, void *ppObj)
	{
	if (IsEqualIID(riid, &IID_IUnknown) \|\|
	IsEqualIID(riid, &IID_IDropSource))
	{
	*ppObj = iface;
	IDropSource_AddRef(iface);
	return S_OK;
	}
	return E_NOINTERFACE;
	}

	static ULONG WINAPI DropSource_AddRef(IDropSource *iface)
	{
	return 2;
	}

	static ULONG WINAPI DropSource_Release(IDropSource *iface)
	{
	return 1;
	}

	static HRESULT WINAPI DropSource_QueryContinueDrag(
	IDropSource *iface,
	BOOL fEscapePressed,
	DWORD grfKeyState)
	{
	/* always drop */
	return DRAGDROP_S_DROP;
	}

	static HRESULT WINAPI DropSource_GiveFeedback(
	IDropSource *iface,
	DWORD dwEffect)
	{
	return DRAGDROP_S_USEDEFAULTCURSORS;
	}

	static const IDropSourceVtbl dropsource_vtbl = {
	DropSource_QueryInterface,
	DropSource_AddRef,
	DropSource_Release,
	DropSource_QueryContinueDrag,
	DropSource_GiveFeedback
	};

	static IDropSource DropSource = { &dropsource_vtbl };

	/ IDataObject stub /
	static HRESULT WINAPI DataObject_QueryInterface(
	IDataObject *iface,
	REFIID riid,
	void **pObj)
	{
	if (IsEqualIID(riid, &IID_IUnknown) \|\|
	IsEqualIID(riid, &IID_IDataObject))
	{
	*pObj = iface;
	IDataObject_AddRef(iface);
	return S_OK;
	}
	return E_NOINTERFACE;
	}

	static ULONG WINAPI DataObject_AddRef(IDataObject *iface)
	{
	return 2;
	}

	static ULONG WINAPI DataObject_Release(IDataObject *iface)
	{
	return 1;
	}

	static HRESULT WINAPI DataObject_GetData(
	IDataObject *iface,
	FORMATETC *pformatetcIn,
	STGMEDIUM *pmedium)
	{
	return E_NOTIMPL;
	}

	static HRESULT WINAPI DataObject_GetDataHere(
	IDataObject *iface,
	FORMATETC *pformatetc,
	STGMEDIUM *pmedium)
	{
	return E_NOTIMPL;
	}

	static HRESULT WINAPI DataObject_QueryGetData(
	IDataObject *iface,
	FORMATETC *pformatetc)
	{
	return S_OK;
	}

	static HRESULT WINAPI DataObject_GetCanonicalFormatEtc(
	IDataObject *iface,
	FORMATETC *pformatectIn,
	FORMATETC *pformatetcOut)
	{
	return E_NOTIMPL;
	}

	static HRESULT WINAPI DataObject_SetData(
	IDataObject *iface,
	FORMATETC *pformatetc,
	STGMEDIUM *pmedium,
	BOOL fRelease)
	{
	return E_NOTIMPL;
	}

	static HRESULT WINAPI DataObject_EnumFormatEtc(
	IDataObject *iface,
	DWORD dwDirection,
	IEnumFORMATETC **ppenumFormatEtc)
	{
	return S_OK;
	}

	static HRESULT WINAPI DataObject_DAdvise(
	IDataObject *iface,
	FORMATETC *pformatetc,
	DWORD advf,
	IAdviseSink *pAdvSink,
	DWORD *pdwConnection)
	{
	return E_NOTIMPL;
	}

	static HRESULT WINAPI DataObject_DUnadvise(
	IDataObject *iface,
	DWORD dwConnection)
	{
	return E_NOTIMPL;
	}

	static HRESULT WINAPI DataObject_EnumDAdvise(
	IDataObject *iface,
	IEnumSTATDATA **ppenumAdvise)
	{
	return E_NOTIMPL;
	}

	static const IDataObjectVtbl dataobject_vtbl = {
	DataObject_QueryInterface,
	DataObject_AddRef,
	DataObject_Release,
	DataObject_GetData,
	DataObject_GetDataHere,
	DataObject_QueryGetData,
	DataObject_GetCanonicalFormatEtc,
	DataObject_SetData,
	DataObject_EnumFormatEtc,
	DataObject_DAdvise,
	DataObject_DUnadvise,
	DataObject_EnumDAdvise
	};

	static IDataObject DataObject = { &dataobject_vtbl };

	static ATOM register_dummy_class(void)
	{
	WNDCLASS wc =
	{
	0,
	DefWindowProc,
	0,
	0,
	GetModuleHandle(NULL),
	NULL,
	LoadCursor(NULL, IDC_ARROW),
	(HBRUSH)(COLOR_BTNFACE+1),
	NULL,
	TEXT("WineOleTestClass"),
	};

	return RegisterClass(&wc);
	}

	static void test_Register_Revoke(void)
	{
	HANDLE prop;
	HRESULT hr;
	HWND hwnd;

	hwnd = CreateWindowA("WineOleTestClass", "Test", 0,
	CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL,
	NULL, NULL, NULL);

	hr = RegisterDragDrop(hwnd, &DropTarget);
	ok(hr == E_OUTOFMEMORY \|\|
	broken(hr == CO_E_NOTINITIALIZED), /* NT4 */
	"RegisterDragDrop without OLE initialized should have returned E_OUTOFMEMORY instead of 0x%08x\n", hr);

	OleInitialize(NULL);

	hr = RegisterDragDrop(hwnd, NULL);
	ok(hr == E_INVALIDARG, "RegisterDragDrop with NULL IDropTarget * should return E_INVALIDARG instead of 0x%08x\n", hr);

	hr = RegisterDragDrop(NULL, &DropTarget);
	ok(hr == DRAGDROP_E_INVALIDHWND, "RegisterDragDrop with NULL hwnd should return DRAGDROP_E_INVALIDHWND instead of 0x%08x\n", hr);

	hr = RegisterDragDrop((HWND)0xdeadbeef, &DropTarget);
	ok(hr == DRAGDROP_E_INVALIDHWND, "RegisterDragDrop with garbage hwnd should return DRAGDROP_E_INVALIDHWND instead of 0x%08x\n", hr);

	ok(droptarget_refs == 0, "DropTarget refs should be zero not %d\n", droptarget_refs);
	hr = RegisterDragDrop(hwnd, &DropTarget);
	ok_ole_success(hr, "RegisterDragDrop");
	ok(droptarget_refs >= 1, "DropTarget refs should be at least one\n");

	prop = GetPropA(hwnd, "OleDropTargetInterface");
	ok(prop == &DropTarget, "expected IDropTarget pointer %p, got %p\n", &DropTarget, prop);

	hr = RegisterDragDrop(hwnd, &DropTarget);
	ok(hr == DRAGDROP_E_ALREADYREGISTERED, "RegisterDragDrop with already registered hwnd should return DRAGDROP_E_ALREADYREGISTERED instead of 0x%08x\n", hr);

	ok(droptarget_refs >= 1, "DropTarget refs should be at least one\n");
	OleUninitialize();
	ok(droptarget_refs >= 1, "DropTarget refs should be at least one\n");

	hr = RevokeDragDrop(hwnd);
	ok_ole_success(hr, "RevokeDragDrop");
	ok(droptarget_refs == 0 \|\|
	broken(droptarget_refs == 1), /* NT4 */
	"DropTarget refs should be zero not %d\n", droptarget_refs);

	hr = RevokeDragDrop(NULL);
	ok(hr == DRAGDROP_E_INVALIDHWND, "RevokeDragDrop with NULL hwnd should return DRAGDROP_E_INVALIDHWND instead of 0x%08x\n", hr);

	DestroyWindow(hwnd);

	/* try to revoke with already destroyed window */
	OleInitialize(NULL);

	hwnd = CreateWindowA("WineOleTestClass", "Test", 0,
	CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL,
	NULL, NULL, NULL);

	hr = RegisterDragDrop(hwnd, &DropTarget);
	ok(hr == S_OK, "got 0x%08x\n", hr);

	DestroyWindow(hwnd);

	hr = RevokeDragDrop(hwnd);
	ok(hr == DRAGDROP_E_INVALIDHWND, "got 0x%08x\n", hr);

	OleUninitialize();
	}

	static void test_DoDragDrop(void)
	{
	DWORD effect;
	HRESULT hr;
	HWND hwnd;

	hwnd = CreateWindowA("WineOleTestClass", "Test", 0,
	CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL,
	NULL, NULL, NULL);
	ok(IsWindow(hwnd), "failed to create window\n");

	hr = OleInitialize(NULL);
	ok(hr == S_OK, "got 0x%08x\n", hr);

	hr = RegisterDragDrop(hwnd, &DropTarget);
	ok(hr == S_OK, "got 0x%08x\n", hr);

	/* incomplete arguments set */
	hr = DoDragDrop(NULL, NULL, 0, NULL);
	ok(hr == E_INVALIDARG, "got 0x%08x\n", hr);

	hr = DoDragDrop(NULL, &DropSource, 0, NULL);
	ok(hr == E_INVALIDARG, "got 0x%08x\n", hr);

	hr = DoDragDrop(&DataObject, NULL, 0, NULL);
	ok(hr == E_INVALIDARG, "got 0x%08x\n", hr);

	hr = DoDragDrop(NULL, NULL, 0, &effect);
	ok(hr == E_INVALIDARG, "got 0x%08x\n", hr);

	hr = DoDragDrop(&DataObject, &DropSource, 0, NULL);
	ok(hr == E_INVALIDARG, "got 0x%08x\n", hr);

	hr = DoDragDrop(NULL, &DropSource, 0, &effect);
	ok(hr == E_INVALIDARG, "got 0x%08x\n", hr);

	hr = DoDragDrop(&DataObject, NULL, 0, &effect);
	ok(hr == E_INVALIDARG, "got 0x%08x\n", hr);

	OleUninitialize();

	DestroyWindow(hwnd);
	}

	START_TEST(dragdrop)
	{
	register_dummy_class();

	test_Register_Revoke();
	test_DoDragDrop();
	}