Context Navigation

source: trunk/dll/draglist.c@ 606

Visit:

Last change on this file since 606 was 606, checked in by Gregg Young, 18 years ago
Drag drop work around for number of files limitation in PM
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 24.6 KB

Line
1
2	/***********************************************************************
3
4	$Id: draglist.c 606 2007-04-13 21:30:27Z gyoung $
5
6	Drag drop support
7
8	Copyright (c) 1993-98 M. Kimes
9	Copyright (c) 2001, 2002 Steven H.Levine
10
11	16 Oct 02 SHL DoFileDrag: don't free stack
12	26 Jul 06 SHL Check more run time errors
13	06 Apr 07 GKY Work around PM DragInfo and DrgFreeDISH limits
14	06 Apr 07 GKY Add DeleteDragitemStrHandles
15	06 Apr 07 GKY Add some error checking in drag/drop
16
17	***********************************************************************/
18
19	#define INCL_DOS
20	#define INCL_WIN
21	#include <os2.h>
22
23	#include <stdio.h>
24	#include <stdlib.h>
25	#include <string.h>
26	#include <ctype.h>
27
28	#include "fm3dll.h"
29
30	static PSZ pszSrcFile = __FILE__;
31
32	#pragma alloc_text(DRAGLIST,DragOne,DoFileDrag,DragList,PickUp,DeleteDragitemStrHandles)
33	/* work around for DrgDeleteDraginfoStrHandles
34	which seems to fail with a large number of strings */
35	BOOL DeleteDragitemStrHandles (PDRAGINFO pDInfo)
36	{
37	PDRAGITEM pDItem;
38	ULONG cDitem;
39	UINT i = 0;
40	APIRET rc;
41
42	cDitem = DrgQueryDragitemCount(pDInfo);
43	for (; i < (UINT)cDitem; i++){
44	pDItem = DrgQueryDragitemPtr(pDInfo, i);
45	if (!pDItem)
46	return FALSE;
47	else {
48	DrgDeleteStrHandle(pDItem->hstrType);
49	DrgDeleteStrHandle(pDItem->hstrRMF);
50	DrgDeleteStrHandle(pDItem->hstrContainerName);
51	rc = DrgDeleteStrHandle(pDItem->hstrSourceName);
52	if (!rc)
53	Win_Error(HWND_DESKTOP, HWND_DESKTOP, pszSrcFile, __LINE__,
54	"DrgDeleteStrHandle");
55	DrgDeleteStrHandle(pDItem->hstrTargetName);
56	}
57	} // for
58	return TRUE;
59	}
60
61	HWND DragOne(HWND hwndCnr, HWND hwndObj, CHAR * filename, BOOL moveok)
62	{
63
64	DRAGITEM DItem;
65	HWND hDrop = 0;
66	DRAGIMAGE fakeicon;
67	PDRAGINFO pDInfo;
68	FILESTATUS3 fs3;
69	CHAR szDir[CCHMAXPATH], szFile[CCHMAXPATH], *p;
70
71	if (filename && *filename) {
72	if ((IsRoot(filename) && IsValidDrive(*filename)) \|\|
73	!DosQueryPathInfo(filename, FIL_STANDARD, &fs3, sizeof(fs3))) {
74	strcpy(szDir, filename);
75	p = szDir;
76	while (*p) {
77	if (*p == '/')
78	*p = '\\';
79	p++;
80	}
81	p = strrchr(szDir, '\\');
82	if (p) {
83	*p = 0;
84	p++;
85	strcpy(szFile, p);
86	strcat(szDir, "\\");
87	}
88	else {
89	strcpy(szFile, filename);
90	*szDir = 0;
91	}
92	memset(&fakeicon, 0, sizeof(DRAGIMAGE));
93	fakeicon.hImage = (IsRoot(filename) \|\|
94	(fs3.attrFile & FILE_DIRECTORY) != 0) ?
95	hptrDir : hptrFile;
96	memset(&DItem, 0, sizeof(DRAGITEM));
97	DItem.hwndItem = (hwndObj) ? hwndObj : hwndCnr; /* Initialize DRAGITEM */
98	// DItem.hwndItem = hwndCnr;
99	DItem.ulItemID = 1;
100	DItem.hstrType = DrgAddStrHandle(DRT_UNKNOWN);
101	DItem.hstrRMF = DrgAddStrHandle(DRMDRFLIST);
102	DItem.hstrContainerName = DrgAddStrHandle(szDir);
103	DItem.hstrSourceName = DrgAddStrHandle(szFile);
104	if (!DItem.hstrSourceName)
105	Win_Error(HWND_DESKTOP, HWND_DESKTOP, pszSrcFile, __LINE__,
106	"DrgQueryStrName");
107	DItem.hstrTargetName = DrgAddStrHandle(szFile);
108	DItem.fsControl = 0;
109	if (IsRoot(filename) \|\| (fs3.attrFile & FILE_DIRECTORY) != 0)
110	DItem.fsControl \|= DC_CONTAINER;
111	if (IsFullName(filename) &&
112	(driveflags[toupper(*filename) - 'A'] & DRIVE_REMOVABLE))
113	DItem.fsControl \|= DC_REMOVEABLEMEDIA;
114	DItem.fsSupportedOps = DO_COPYABLE \| DO_LINKABLE;
115	if (moveok && IsFullName(filename) &&
116	!(driveflags[toupper(*filename) - 'A'] & DRIVE_NOTWRITEABLE))
117	DItem.fsSupportedOps \|= DO_MOVEABLE;
118	if (IsRoot(filename))
119	DItem.fsSupportedOps = DO_LINKABLE;
120	fakeicon.cb = sizeof(DRAGIMAGE);
121	fakeicon.cptl = 0;
122	fakeicon.fl = DRG_ICON;
123	fakeicon.sizlStretch.cx = 32;
124	fakeicon.sizlStretch.cy = 32;
125	fakeicon.cxOffset = -16;
126	fakeicon.cyOffset = 0;
127	pDInfo = DrgAllocDraginfo(1); /* Allocate DRAGINFO */
128	if (pDInfo) {
129	if (IsFullName(filename) &&
130	(driveflags[toupper(*filename) - 'A'] & DRIVE_NOTWRITEABLE))
131	pDInfo->usOperation = DO_COPY;
132	else
133	pDInfo->usOperation = DO_DEFAULT;
134	if (IsRoot(filename))
135	pDInfo->usOperation = DO_LINK;
136	pDInfo->hwndSource = (hwndObj) ? hwndObj : hwndCnr;
137	// pDInfo->hwndSource = hwndCnr;
138	DrgSetDragitem(pDInfo, /* Set item in DRAGINFO */
139	&DItem, /* Pointer to DRAGITEM */
140	sizeof(DRAGITEM), /* Size of DRAGITEM */
141	0); /* Index of DRAGITEM */
142	WinSetFocus(HWND_DESKTOP, HWND_DESKTOP);
143	hDrop = DrgDrag(hwndCnr, /* Initiate drag */
144	pDInfo, /* DRAGINFO structure */
145	&fakeicon, 1L, VK_ENDDRAG, /* End of drag indicator */
146	(PVOID) NULL); /* Reserved */
147	//if (hDrop == NULLHANDLE)
148	if (!DeleteDragitemStrHandles(pDInfo)) //)
149	Win_Error(HWND_DESKTOP, HWND_DESKTOP, pszSrcFile, __LINE__,
150	"DeleteDragistr");
151	DrgDeleteDraginfoStrHandles (pDInfo);
152	DrgFreeDraginfo(pDInfo); /* Free DRAGINFO struct */
153	WinSetWindowPos(hwndCnr, HWND_TOP, 0, 0, 0, 0, SWP_ACTIVATE);
154	}
155	}
156	}
157	return hDrop;
158	}
159
160	HWND DoFileDrag(HWND hwndCnr, HWND hwndObj, PCNRDRAGINIT pcd, CHAR * arcfile,
161	CHAR * directory, BOOL moveok)
162	{
163	/* drag files from a container */
164
165	BOOL isdir, rooting = FALSE;
166	PCNRITEM pci;
167	register CHAR *p;
168	INT attribute = CRA_CURSORED;
169	PDRAGINFO pDInfo = NULL;
170	DRAGITEM ppDItem = NULL, ppTest;
171	PCNRITEM pciRec = (PCNRITEM) pcd->pRecord;
172	HWND hDrop = 0;
173	register ULONG ulNumfiles = 0L, numdragalloc = 0L, Select, ulNumIcon = 0;
174	CHAR szFile[CCHMAXPATH], szBuffer[CCHMAXPATH];
175	DRAGIMAGE padiIcon = NULL, padiTest, diFakeIcon;
176	APIRET rc;
177
178	fExceedPMDrgLimit = 0;
179	if (!pciRec && directory && *directory)
180	return DragOne(hwndCnr, hwndObj, directory, moveok);
181
182	if (!pciRec) {
183	pci = (PCNRITEM) WinSendMsg(hwndCnr, CM_QUERYRECORDEMPHASIS,
184	MPFROMLONG(CMA_FIRST),
185	MPFROMSHORT(attribute));
186	if (pci && (INT) pci > -1) {
187	if (pci->rc.flRecordAttr & CRA_SELECTED) {
188	attribute = CRA_SELECTED;
189	pci =
190	WinSendMsg(hwndCnr, CM_QUERYRECORDEMPHASIS, MPFROMLONG(CMA_FIRST),
191	MPFROMSHORT(attribute));
192	}
193	}
194	}
195	else {
196	pci = pciRec;
197	attribute = (pci->rc.flRecordAttr & CRA_SELECTED) ? CRA_SELECTED : 0;
198	if (attribute) {
199	pci = WinSendMsg(hwndCnr, CM_QUERYRECORDEMPHASIS, MPFROMLONG(CMA_FIRST),
200	MPFROMSHORT(attribute));
201	}
202	}
203
204	Select = 0L;
205	while (pci && (INT) pci > -1) {
206	if (!(pci->rc.flRecordAttr & CRA_FILTERED)) {
207	if (IsRoot(pci->szFileName) && !IsValidDrive(*pci->szFileName))
208	goto Continuing;
209	if (!arcfile) {
210	strcpy(szBuffer, pci->szFileName);
211	p = strrchr(szBuffer, '\\');
212	if (p) {
213	p++;
214	strcpy(szFile, p);
215	*p = 0;
216	}
217	else
218	goto Continuing;
219	}
220	else
221	strcpy(szFile, pci->szFileName);
222	}
223	if (!arcfile) {
224	// Filesystem object
225	isdir = ((pci->attrFile & FILE_DIRECTORY) != 0);
226	if (ulNumfiles + 2L > numdragalloc) {
227	if (!padiIcon) {
228	padiTest =
229	xrealloc(padiIcon, sizeof(DRAGIMAGE) * (numdragalloc + 4L),
230	pszSrcFile, __LINE__);
231	if (padiTest)
232	padiIcon = padiTest;
233	else
234	break;
235	}
236	else if (!ulNumIcon) {
237	padiIcon[ulNumfiles].cb = sizeof(DRAGIMAGE);
238	padiIcon[ulNumfiles].cptl = 0;
239	padiIcon[ulNumfiles].hImage = hptrLast;
240	padiIcon[ulNumfiles].fl = DRG_ICON;
241	padiIcon[ulNumfiles].sizlStretch.cx = 32;
242	padiIcon[ulNumfiles].sizlStretch.cy = 32;
243	padiIcon[ulNumfiles].cxOffset = -16 + (ulNumfiles * 4);
244	padiIcon[ulNumfiles].cyOffset = 0 + (ulNumfiles * 7);
245	ulNumIcon = ulNumfiles + 1;
246	}
247	ppTest =
248	xrealloc(ppDItem, sizeof(DRAGITEM ) (numdragalloc + 4L),
249	pszSrcFile, __LINE__);
250	if (ppTest) {
251	ppDItem = ppTest;
252	numdragalloc += 4L;
253	}
254	else
255	break;
256	}
257	ppDItem[ulNumfiles] = xmalloc(sizeof(DRAGITEM), pszSrcFile, __LINE__);
258	if (ppDItem[ulNumfiles]) {
259	if (!ulNumIcon) {
260	padiIcon[ulNumfiles].cb = sizeof(DRAGIMAGE);
261	padiIcon[ulNumfiles].cptl = 0;
262	padiIcon[ulNumfiles].hImage = pci->rc.hptrIcon;
263	if (!padiIcon[ulNumfiles].hImage)
264	padiIcon[ulNumfiles].hImage = (isdir) ? hptrDir : hptrFile;
265	padiIcon[ulNumfiles].fl = DRG_ICON;
266	padiIcon[ulNumfiles].sizlStretch.cx = 32;
267	padiIcon[ulNumfiles].sizlStretch.cy = 32;
268	padiIcon[ulNumfiles].cxOffset = -16 + (ulNumfiles * 3);
269	padiIcon[ulNumfiles].cyOffset = 0 + (ulNumfiles * 6);
270	}
271	memset(ppDItem[ulNumfiles], 0, sizeof(DRAGITEM));
272	ppDItem[ulNumfiles]->hwndItem = (hwndObj) ? hwndObj : hwndCnr; /* Initialize DRAGITEM */
273	ppDItem[ulNumfiles]->hwndItem = hwndCnr;
274	ppDItem[ulNumfiles]->ulItemID = (ULONG) pci;
275	ppDItem[ulNumfiles]->hstrType = DrgAddStrHandle(DRT_UNKNOWN);
276	ppDItem[ulNumfiles]->hstrRMF = DrgAddStrHandle(DRMDRFLIST);
277	ppDItem[ulNumfiles]->hstrContainerName = DrgAddStrHandle(szBuffer);
278	ppDItem[ulNumfiles]->hstrSourceName = DrgAddStrHandle(szFile);
279	if (!ppDItem[ulNumfiles]->hstrSourceName){
280	DrgDeleteStrHandle(ppDItem[ulNumfiles]->hstrType);
281	DrgDeleteStrHandle(ppDItem[ulNumfiles]->hstrRMF);
282	DrgDeleteStrHandle(ppDItem[ulNumfiles]->hstrContainerName);
283	DrgDeleteStrHandle(ppDItem[ulNumfiles]->hstrSourceName);
284	xfree(ppDItem[ulNumfiles]);
285	fExceedPMDrgLimit = ulNumfiles - 1;
286	break;
287	}
288	/*Win_Error(HWND_DESKTOP, HWND_DESKTOP, pszSrcFile, __LINE__,
289	"DrgAddStrHandle");*/
290	ppDItem[ulNumfiles]->hstrTargetName = DrgAddStrHandle(szFile);
291	ppDItem[ulNumfiles]->fsControl = (isdir) ? DC_CONTAINER : 0;
292	if (IsFullName(pci->szFileName) &&
293	(driveflags[toupper(*pci->szFileName) - 'A'] & DRIVE_REMOVABLE))
294	ppDItem[ulNumfiles]->fsControl \|= DC_REMOVEABLEMEDIA;
295	ppDItem[ulNumfiles]->fsSupportedOps = DO_COPYABLE \| DO_LINKABLE;
296	if (moveok && IsFullName(pci->szFileName) &&
297	!(driveflags[toupper(*pci->szFileName) - 'A'] &
298	DRIVE_NOTWRITEABLE))
299	ppDItem[ulNumfiles]->fsSupportedOps \|= DO_MOVEABLE;
300	if (IsRoot(pci->szFileName)) {
301	ppDItem[ulNumfiles]->fsSupportedOps = DO_LINKABLE;
302	rooting = TRUE;
303	}
304	//if (ulNumfiles >= 2000){
305	// pDInfo = DrgAllocDraginfo(ulNumfiles);
306	// fExceedPMDrgLimit = TRUE;
307	// goto Thatsall;
308	// }
309	ulNumfiles++;
310	ppDItem[ulNumfiles] = NULL;
311	}
312	else
313	break;
314	}
315	else {
316	// Archive object
317	if (ulNumfiles + 3L > numdragalloc) {
318	ppTest =
319	xrealloc(ppDItem, sizeof(DRAGITEM ) (numdragalloc + 5L),
320	pszSrcFile, __LINE__);
321	if (!ppTest)
322	break;
323	else {
324	ppDItem = ppTest;
325	numdragalloc += 5L;
326	}
327	}
328	ppDItem[ulNumfiles] = xmalloc(sizeof(DRAGITEM), pszSrcFile, __LINE__);
329	if (!ppDItem[ulNumfiles])
330	break;
331	else {
332	diFakeIcon.hImage = hptrFile;
333	memset(ppDItem[ulNumfiles], 0, sizeof(DRAGITEM));
334	ppDItem[ulNumfiles]->hwndItem = (hwndObj) ? hwndObj : hwndCnr; /* Initialize DRAGITEM */
335	ppDItem[ulNumfiles]->hwndItem = hwndCnr;
336	ppDItem[ulNumfiles]->ulItemID = (ULONG) pci;
337	ppDItem[ulNumfiles]->hstrType = DrgAddStrHandle(DRT_UNKNOWN);
338	ppDItem[ulNumfiles]->hstrRMF = DrgAddStrHandle(DRMDRFOS2FILE);
339	ppDItem[ulNumfiles]->hstrContainerName = DrgAddStrHandle(arcfile);
340	ppDItem[ulNumfiles]->hstrSourceName = DrgAddStrHandle(szFile);
341	if (!ppDItem[ulNumfiles]->hstrSourceName){
342	DrgDeleteStrHandle(ppDItem[ulNumfiles]->hstrType);
343	DrgDeleteStrHandle(ppDItem[ulNumfiles]->hstrRMF);
344	DrgDeleteStrHandle(ppDItem[ulNumfiles]->hstrContainerName);
345	DrgDeleteStrHandle(ppDItem[ulNumfiles]->hstrSourceName);
346	xfree(ppDItem[ulNumfiles]);
347	fExceedPMDrgLimit = ulNumfiles - 1;
348	break;
349	}
350	ppDItem[ulNumfiles]->hstrTargetName = DrgAddStrHandle(szFile);
351	ppDItem[ulNumfiles]->fsControl = DC_PREPARE;
352	if (IsFullName(arcfile) &&
353	(driveflags[toupper(*arcfile) - 'A'] & DRIVE_REMOVABLE))
354	ppDItem[ulNumfiles]->fsControl \|= DC_REMOVEABLEMEDIA;
355	ppDItem[ulNumfiles]->fsSupportedOps = DO_COPYABLE;
356	ulNumfiles++;
357	ppDItem[ulNumfiles] = xmalloc(sizeof(DRAGITEM), pszSrcFile, __LINE__);
358	if (ppDItem[ulNumfiles]) {
359	diFakeIcon.hImage = hptrFile;
360	memset(ppDItem[ulNumfiles], 0, sizeof(DRAGITEM));
361	ppDItem[ulNumfiles]->hwndItem = (hwndObj) ? hwndObj : hwndCnr; /* Initialize DRAGITEM */
362	ppDItem[ulNumfiles]->hwndItem = hwndCnr;
363	ppDItem[ulNumfiles]->ulItemID = Select++;
364	ppDItem[ulNumfiles]->hstrType = DrgAddStrHandle(DRT_UNKNOWN);
365	ppDItem[ulNumfiles]->hstrRMF = DrgAddStrHandle(DRMDRFFM2ARC);
366	ppDItem[ulNumfiles]->hstrContainerName = DrgAddStrHandle(arcfile);
367	ppDItem[ulNumfiles]->hstrSourceName = DrgAddStrHandle(szFile);
368	if (!ppDItem[ulNumfiles]->hstrSourceName){
369	DrgDeleteStrHandle(ppDItem[ulNumfiles]->hstrType);
370	DrgDeleteStrHandle(ppDItem[ulNumfiles]->hstrRMF);
371	DrgDeleteStrHandle(ppDItem[ulNumfiles]->hstrContainerName);
372	DrgDeleteStrHandle(ppDItem[ulNumfiles]->hstrSourceName);
373	xfree(ppDItem[ulNumfiles]);
374	fExceedPMDrgLimit = ulNumfiles - 1;
375	break;
376	}
377	ppDItem[ulNumfiles]->hstrTargetName = DrgAddStrHandle(szFile);
378	ppDItem[ulNumfiles]->fsControl = 0;
379	if (IsFullName(arcfile) &&
380	(driveflags[toupper(*arcfile) - 'A'] & DRIVE_REMOVABLE))
381	ppDItem[ulNumfiles]->fsControl \|= DC_REMOVEABLEMEDIA;
382	ppDItem[ulNumfiles]->fsSupportedOps = DO_COPYABLE;
383	//if (ulNumfiles >= 1000){
384	// pDInfo = DrgAllocDraginfo(ulNumfiles);
385	// fexceedpmdrglimit = TRUE;
386	// goto Thatsall;
387	// }
388	ulNumfiles++;
389	}
390	ppDItem[ulNumfiles] = NULL;
391	}
392	}
393	WinSendMsg(hwndCnr, CM_SETRECORDEMPHASIS, MPFROMP(pci),
394	MPFROM2SHORT(TRUE, CRA_SOURCE));
395
396	Continuing:
397
398	if (!attribute)
399	break;
400	pci = WinSendMsg(hwndCnr, CM_QUERYRECORDEMPHASIS, MPFROMP(pci),
401	MPFROMSHORT(attribute));
402	} // while
403	if (fExceedPMDrgLimit)
404	ulNumfiles = ulNumfiles - 1;
405	if (ulNumfiles) {
406	pDInfo = DrgAllocDraginfo(ulNumfiles); /* Allocate DRAGINFO */
407	if (pDInfo) {
408	if ((arcfile && *arcfile) \|\| (IsFullName(szBuffer) &&
409	(driveflags[toupper(*szBuffer) - 'A'] &
410	DRIVE_NOTWRITEABLE)))
411	pDInfo->usOperation = DO_COPY;
412	else
413	pDInfo->usOperation = DO_DEFAULT;
414	if ((!arcfile \|\| !*arcfile) && rooting)
415	pDInfo->usOperation = DO_LINK;
416	pDInfo->hwndSource = (hwndObj) ? hwndObj : hwndCnr;
417	// pDInfo->hwndSource = hwndCnr;
418	for (Select = 0L; Select < ulNumfiles; Select++) {
419	DrgSetDragitem(pDInfo, /* Set item in DRAGINFO */
420	ppDItem[Select], /* Pointer to DRAGITEM */
421	sizeof(DRAGITEM), /* Size of DRAGITEM */
422	Select); /* Index of DRAGITEM */
423	xfree(ppDItem[Select]);
424	}
425	#ifdef __DEBUG_ALLOC__
426	_heap_check();
427	#endif
428	xfree(ppDItem);
429	ppDItem = NULL;
430	DosPostEventSem(CompactSem);
431
432	if (arcfile) {
433	diFakeIcon.cb = sizeof(DRAGIMAGE);
434	diFakeIcon.cptl = 0;
435	if (ulNumfiles > 1)
436	diFakeIcon.hImage = hptrFile;
437	diFakeIcon.fl = DRG_ICON;
438	diFakeIcon.sizlStretch.cx = 32;
439	diFakeIcon.sizlStretch.cy = 32;
440	diFakeIcon.cxOffset = -16;
441	diFakeIcon.cyOffset = 0;
442	padiIcon = &diFakeIcon;
443	}
444	if (!arcfile) {
445	if (!ulNumIcon)
446	ulNumIcon = ulNumfiles;
447	}
448	else
449	ulNumIcon = 1L;
450
451	WinSetFocus(HWND_DESKTOP, HWND_DESKTOP);
452	hDrop = DrgDrag(hwndCnr, /* Initiate drag */
453	pDInfo, /* DRAGINFO structure */
454	padiIcon, ulNumIcon, VK_ENDDRAG, /* End of drag indicator */
455	(PVOID) NULL); /* Reserved */
456	rc = DeleteDragitemStrHandles(pDInfo);
457	if (!rc)
458	Win_Error(HWND_DESKTOP, HWND_DESKTOP, pszSrcFile, __LINE__,
459	"DeleteDragistr");
460	DrgDeleteDraginfoStrHandles (pDInfo);
461	rc = DrgFreeDraginfo(pDInfo); /* Free DRAGINFO struct */
462	if (!rc)
463	Win_Error(HWND_DESKTOP, HWND_DESKTOP, pszSrcFile, __LINE__,
464	"DrgFreeDraginfo");
465	if (padiIcon && padiIcon != &diFakeIcon)
466	xfree(padiIcon);
467	padiIcon = NULL;
468	WinSetWindowPos(hwndCnr, HWND_TOP, 0, 0, 0, 0, SWP_ACTIVATE);
469	DosPostEventSem(CompactSem);
470	}
471	}
472	if (ppDItem)
473	xfree(ppDItem);
474	if (padiIcon && padiIcon != &diFakeIcon)
475	xfree(padiIcon);
476	MarkAll(hwndCnr, TRUE, FALSE, TRUE);
477	return hDrop;
478	}
479
480	HWND DragList(HWND hwnd, HWND hwndObj, CHAR ** list, BOOL moveok)
481	{
482
483	/* drag a linked list of files */
484
485	BOOL isdir;
486	register CHAR *p;
487	PDRAGINFO pDInfo = NULL;
488	DRAGITEM ppDItem = NULL, ppTest;
489	HWND hDrop = (HWND) 0;
490	register ULONG ulNumfiles = 0L, numdragalloc = 0L, Select, ulNumIcon = 0;
491	CHAR szFile[CCHMAXPATH], szBuffer[CCHMAXPATH];
492	DRAGIMAGE padiIcon = NULL, padiTest;
493	FILESTATUS3 fs3;
494
495	if (!list \|\| !list[0])
496	return hDrop;
497	for (Select = 0; list[Select]; Select++) {
498	if ((!IsRoot(list[Select]) \|\| !IsValidDrive(*list[Select])) &&
499	DosQueryPathInfo(list[Select], FIL_STANDARD, &fs3, sizeof(fs3)))
500	continue;
501	strcpy(szBuffer, list[Select]);
502	p = strrchr(szBuffer, '\\');
503	if (p) {
504	p++;
505	strcpy(szFile, p);
506	*p = 0;
507	}
508	else
509	continue;
510	if (*szFile) {
511	isdir = (IsRoot(list[Select])) ? TRUE :
512	((fs3.attrFile & FILE_DIRECTORY) != 0);
513	if (ulNumfiles + 2L > numdragalloc) {
514	if (!padiIcon) {
515	padiTest =
516	xrealloc(padiIcon, sizeof(DRAGIMAGE) * (numdragalloc + 4L),
517	pszSrcFile, __LINE__);
518	if (!padiTest)
519	break;
520	else
521	padiIcon = padiTest;
522	}
523	else if (!ulNumIcon) {
524	padiIcon[ulNumfiles].cb = sizeof(DRAGIMAGE);
525	padiIcon[ulNumfiles].cptl = 0;
526	padiIcon[ulNumfiles].hImage = hptrLast;
527	padiIcon[ulNumfiles].fl = DRG_ICON;
528	padiIcon[ulNumfiles].sizlStretch.cx = 32;
529	padiIcon[ulNumfiles].sizlStretch.cy = 32;
530	padiIcon[ulNumfiles].cxOffset = -16 + (ulNumfiles * 4);
531	padiIcon[ulNumfiles].cyOffset = 0 + (ulNumfiles * 7);
532	ulNumIcon = ulNumfiles + 1;
533	}
534	ppTest =
535	xrealloc(ppDItem, sizeof(DRAGITEM ) (numdragalloc + 4L),
536	pszSrcFile, __LINE__);
537	if (!ppTest)
538	break;
539	else {
540	ppDItem = ppTest;
541	numdragalloc += 4L;
542	}
543	}
544	ppDItem[ulNumfiles] = xmalloc(sizeof(DRAGITEM), pszSrcFile, __LINE__);
545	if (!ppDItem[ulNumfiles])
546	break;
547	else {
548	if (!ulNumIcon) {
549	padiIcon[ulNumfiles].cb = sizeof(DRAGIMAGE);
550	padiIcon[ulNumfiles].cptl = 0;
551	padiIcon[ulNumfiles].hImage = (isdir) ? hptrDir : hptrFile;
552	padiIcon[ulNumfiles].fl = DRG_ICON;
553	padiIcon[ulNumfiles].sizlStretch.cx = 32;
554	padiIcon[ulNumfiles].sizlStretch.cy = 32;
555	padiIcon[ulNumfiles].cxOffset = -16 + (ulNumfiles * 3);
556	padiIcon[ulNumfiles].cyOffset = 0 + (ulNumfiles * 6);
557	}
558	memset(ppDItem[ulNumfiles], 0, sizeof(DRAGITEM));
559	ppDItem[ulNumfiles]->hwndItem = (hwndObj) ? hwndObj : hwnd; /* Initialize DRAGITEM */
560	// ppDItem[ulNumfiles]->hwndItem = hwnd;
561	ppDItem[ulNumfiles]->ulItemID = (ULONG) Select;
562	ppDItem[ulNumfiles]->hstrType = DrgAddStrHandle(DRT_UNKNOWN);
563	ppDItem[ulNumfiles]->hstrRMF = DrgAddStrHandle(DRMDRFLIST);
564	ppDItem[ulNumfiles]->hstrContainerName = DrgAddStrHandle(szBuffer);
565	ppDItem[ulNumfiles]->hstrSourceName = DrgAddStrHandle(szFile);
566	if (!ppDItem[ulNumfiles]->hstrSourceName){
567	DrgDeleteStrHandle(ppDItem[ulNumfiles]->hstrType);
568	DrgDeleteStrHandle(ppDItem[ulNumfiles]->hstrRMF);
569	DrgDeleteStrHandle(ppDItem[ulNumfiles]->hstrContainerName);
570	DrgDeleteStrHandle(ppDItem[ulNumfiles]->hstrSourceName);
571	xfree(ppDItem[ulNumfiles]);
572	fExceedPMDrgLimit = ulNumfiles - 1;
573	break;
574	}
575	ppDItem[ulNumfiles]->hstrTargetName = DrgAddStrHandle(szFile);
576	ppDItem[ulNumfiles]->fsControl = (isdir) ? DC_CONTAINER : 0;
577	if (IsFullName(list[Select]) &&
578	(driveflags[toupper(*list[Select]) - 'A'] & DRIVE_REMOVABLE))
579	ppDItem[ulNumfiles]->fsControl \|= DC_REMOVEABLEMEDIA;
580	ppDItem[ulNumfiles]->fsSupportedOps = DO_COPYABLE \| DO_LINKABLE;
581	if (moveok && IsFullName(list[Select]) &&
582	!(driveflags[toupper(*list[Select]) - 'A'] & DRIVE_NOTWRITEABLE))
583	ppDItem[ulNumfiles]->fsSupportedOps \|= DO_MOVEABLE;
584	if (IsRoot(list[Select]))
585	ppDItem[ulNumfiles]->fsControl = DO_LINKABLE;
586	ulNumfiles++;
587	ppDItem[ulNumfiles] = NULL;
588	}
589	}
590	} // for
591	if (fExceedPMDrgLimit)
592	ulNumfiles = ulNumfiles - 1;
593	if (ulNumfiles) {
594	pDInfo = DrgAllocDraginfo(ulNumfiles); /* Allocate DRAGINFO */
595	if (pDInfo) {
596	if ((IsFullName(szBuffer) &&
597	(driveflags[toupper(*szBuffer) - 'A'] & DRIVE_NOTWRITEABLE)))
598	pDInfo->usOperation = DO_COPY;
599	else
600	pDInfo->usOperation = DO_DEFAULT;
601	if (IsRoot(list[0]))
602	pDInfo->usOperation = DO_LINK;
603	pDInfo->hwndSource = (hwndObj) ? hwndObj : hwnd;
604	// pDInfo->hwndSource = hwnd;
605	for (Select = 0L; Select < ulNumfiles; Select++) {
606	DrgSetDragitem(pDInfo, /* Set item in DRAGINFO */
607	ppDItem[Select], /* Pointer to DRAGITEM */
608	sizeof(DRAGITEM), /* Size of DRAGITEM */
609	Select); /* Index of DRAGITEM */
610	free(ppDItem[Select]);
611	} // for
612	#ifdef __DEBUG_ALLOC__
613	_heap_check();
614	#endif
615	free(ppDItem);
616	ppDItem = NULL;
617	DosPostEventSem(CompactSem);
618
619	if (!ulNumIcon)
620	ulNumIcon = ulNumfiles;
621
622	WinSetFocus(HWND_DESKTOP, HWND_DESKTOP);
623	hDrop = DrgDrag(hwnd, /* Initiate drag */
624	pDInfo, /* DRAGINFO structure */
625	padiIcon, ulNumIcon, VK_ENDDRAG, /* End of drag indicator */
626	(PVOID) NULL); /* Reserved */
627	if (!DeleteDragitemStrHandles(pDInfo))
628	Win_Error(HWND_DESKTOP, HWND_DESKTOP, pszSrcFile, __LINE__,
629	"DeleteDragistr");
630	DrgDeleteDraginfoStrHandles (pDInfo);
631	if (!DrgFreeDraginfo(pDInfo)); /* Free DRAGINFO struct */
632	Win_Error(HWND_DESKTOP, HWND_DESKTOP, pszSrcFile, __LINE__,
633	"DrgFreeDraginfo");
634	xfree(padiIcon);
635	padiIcon = NULL;
636	WinSetWindowPos(hwnd, HWND_TOP, 0, 0, 0, 0, SWP_ACTIVATE);
637	DosPostEventSem(CompactSem);
638	}
639	}
640	if (ppDItem)
641	free(ppDItem);
642	if (padiIcon)
643	free(padiIcon);
644	return hDrop;
645	}
646
647	#ifdef NEVER
648
649	BOOL PickUp(HWND hwndCnr, HWND hwndObj, PCNRDRAGINIT pcd)
650	{
651
652	PCNRITEM pci;
653	BOOL loop = TRUE;
654	PDRAGINFO pdinfoOld = NULL, pdinfoCurrent = NULL;
655	ULONG cditem = 0;
656	DRAGITEM ditem;
657	DRAGIMAGE diFakeIcon;
658	CHAR szDir[CCHMAXPATH], szFile[CCHMAXPATH], *p;
659
660	pci = (PCNRITEM) pcd->pRecord;
661	if (pci && (INT) pci != -1) {
662	if (pci->rc.flRecordAttr & CRA_SELECTED) {
663	loop = TRUE;
664	pci = WinSendMsg(hwndCnr, CM_QUERYRECORDEMPHASIS,
665	MPFROMLONG(CMA_FIRST), MPFROMSHORT(CRA_SELECTED));
666	}
667	while (pci && (INT) pci != -1 && *pci->szFileName) {
668	if (pdinfoOld \|\| DrgQueryDragStatus() & DGS_LAZYDRAGINPROGRESS) {
669	if (!pdinfoOld)
670	pdinfoOld = DrgQueryDraginfoPtr(NULL);
671	if (pdinfoOld) {
672	cditem = pdinfoOld->cditem + 1;
673	pdinfoCurrent = DrgReallocDraginfo(pdinfoOld, cditem);
674	pdinfoOld = pdinfoCurrent;
675	}
676	}
677	else
678	pdinfoCurrent = pdinfoOld = DrgAllocDraginfo(1);
679	if (pdinfoCurrent) {
680	strcpy(szDir, pci->szFileName);
681	p = szDir;
682	while (*p) {
683	if (*p == '/')
684	*p = '\\';
685	p++;
686	}
687	p = strrchr(szDir, '\\');
688	if (p) {
689	*p = 0;
690	p++;
691	strcpy(szFile, p);
692	strcat(szDir, "\\");
693	}
694	else {
695	strcpy(szFile, pci->szFileName);
696	*szDir = 0;
697	}
698	ditem.ulItemID = (ULONG) pci;
699	ditem.hwndItem = (hwndObj) ? hwndObj : hwndCnr;
700	ditem.hstrType = DrgAddStrHandle(DRT_UNKNOWN);
701	ditem.hstrRMF = DrgAddStrHandle(DRMDRFLIST);
702	ditem.hstrContainerName = DrgAddStrHandle(szDir);
703	ditem.hstrSourceName = DrgAddStrHandle(szFile);
704	if (!ditem.hstrSourceName)
705	Win_Error(HWND_DESKTOP, HWND_DESKTOP, pszSrcFile, __LINE__,
706	"DrgAddStrHandle");
707	ditem.hstrTargetName = DrgAddStrHandle(szFile);
708	ditem.fsControl = 0;
709	if (IsRoot(pci->szFileName) \|\| (pci->attrFile & FILE_DIRECTORY) != 0)
710	ditem.fsControl \|= DC_CONTAINER;
711	if (IsFullName(pci->szFileName) &&
712	(driveflags[toupper(*pci->szFileName) - 'A'] & DRIVE_REMOVABLE))
713	ditem.fsControl \|= DC_REMOVEABLEMEDIA;
714	ditem.fsSupportedOps = DO_COPYABLE \| DO_LINKABLE;
715	if (IsFullName(pci->szFileName) &&
716	!(driveflags[toupper(*pci->szFileName) - 'A'] &
717	DRIVE_NOTWRITEABLE))
718	ditem.fsSupportedOps \|= DO_MOVEABLE;
719	if (IsRoot(pci->szFileName))
720	ditem.fsSupportedOps = DO_LINKABLE;
721	memset(&diFakeIcon, 0, sizeof(DRAGIMAGE));
722	diFakeIcon.hImage = pci->rc.hptrIcon;
723	diFakeIcon.cb = sizeof(DRAGIMAGE);
724	diFakeIcon.cptl = 0;
725	diFakeIcon.fl = DRG_ICON;
726	diFakeIcon.sizlStretch.cx = 32;
727	diFakeIcon.sizlStretch.cy = 32;
728	diFakeIcon.cxOffset = -16;
729	diFakeIcon.cyOffset = 0;
730	if (IsFullName(pci->szFileName) &&
731	(driveflags[toupper(*pci->szFileName) - 'A'] &
732	DRIVE_NOTWRITEABLE))
733	pdinfoCurrent->usOperation = DO_COPY;
734	else
735	pdinfoCurrent->usOperation = DO_DEFAULT;
736	if (IsRoot(pci->szFileName))
737	pdinfoCurrent->usOperation = DO_LINK;
738	pdinfoCurrent->hwndSource = (hwndObj) ? hwndObj : hwndCnr;
739	DrgSetDragitem(pdinfoCurrent, &ditem, sizeof(DRAGITEM), cditem);
740	}
741	if (!loop)
742	break;
743	pci = WinSendMsg(hwndCnr, CM_QUERYRECORDEMPHASIS,
744	MPFROMP(pci), MPFROMSHORT(CRA_SELECTED));
745	}
746	if (pdinfoCurrent)
747	return DrgLazyDrag(hwndCnr, pdinfoCurrent, &diFakeIcon, 1, NULL);
748	}
749	return FALSE;
750	}
751
752	#endif // NEVER

Note: See TracBrowser for help on using the repository browser.

Download in other formats: