// clipWatcherWndProc
//
static LRESULT CALLBACK clipWatcherWndProc(
HWND hWnd,
UINT uMsg,
WPARAM wParam,
LPARAM lParam)
{
//fwprintf(stderr, L"msg: %x, hWnd=%p, wParam=%p\n", uMsg, hWnd, wParam);
switch (uMsg) {
case WM_CREATE:
{
// Initialization.
CREATESTRUCT* cs = (CREATESTRUCT*)lParam;
ClipWatcher* watcher = (ClipWatcher*)(cs->lpCreateParams);
if (watcher != NULL) {
SetWindowLongPtr(hWnd, GWLP_USERDATA, (LONG_PTR)watcher);
if (logfp != NULL) {
fwprintf(logfp, L"watcher: %s\n", watcher->name);
}
// Start watching the clipboard content.
AddClipboardFormatListener(hWnd);
SetTimer(hWnd, watcher->blink_timer_id, ICON_BLINK_INTERVAL, NULL);
SetTimer(hWnd, watcher->check_timer_id, FILESYSTEM_INTERVAL, NULL);
SendMessage(hWnd, WM_TASKBAR_CREATED, 0, 0);
}
return FALSE;
}
case WM_DESTROY:
{
// Clean up.
LONG_PTR lp = GetWindowLongPtr(hWnd, GWLP_USERDATA);
ClipWatcher* watcher = (ClipWatcher*)lp;
if (watcher != NULL) {
KillTimer(hWnd, watcher->blink_timer_id);
KillTimer(hWnd, watcher->check_timer_id);
// Stop watching the clipboard content.
RemoveClipboardFormatListener(hWnd);
// Unregister the icon.
NOTIFYICONDATA nidata = {0};
nidata.cbSize = sizeof(nidata);
nidata.hWnd = hWnd;
nidata.uID = watcher->icon_id;
Shell_NotifyIcon(NIM_DELETE, &nidata);
}
PostQuitMessage(0);
return FALSE;
}
case WM_CLIPBOARDUPDATE:
{
// Clipboard change detected.
LONG_PTR lp = GetWindowLongPtr(hWnd, GWLP_USERDATA);
ClipWatcher* watcher = (ClipWatcher*)lp;
if (watcher != NULL) {
DWORD seqno = GetClipboardSequenceNumber();
if (watcher->seqno < seqno) {
watcher->seqno = seqno;
if (logfp != NULL) {
fwprintf(logfp, L"updated clipboard: seqno=%d\n", seqno);
}
for (int i = 0; i < CLIPBOARD_RETRY; i++) {
Sleep(CLIPBOARD_DELAY);
if (OpenClipboard(hWnd)) {
if (GetClipboardData(CF_ORIGIN) == NULL) {
WCHAR path[MAX_PATH];
StringCchPrintf(path, _countof(path), L"%s\\%s",
watcher->dstdir, watcher->name);
exportClipFile(path);
}
WCHAR text[256];
int filetype = getClipboardText(text, _countof(text));
if (0 <= filetype) {
NOTIFYICONDATA nidata = {0};
nidata.cbSize = sizeof(nidata);
nidata.hWnd = hWnd;
nidata.uID = watcher->icon_id;
nidata.uFlags = NIF_INFO;
nidata.dwInfoFlags = NIIF_INFO;
nidata.uTimeout = 1;
StringCchCopy(nidata.szInfoTitle,
_countof(nidata.szInfoTitle),
MESSAGE_UPDATED);
StringCchCopy(nidata.szInfo,
_countof(nidata.szInfo),
text);
Shell_NotifyIcon(NIM_MODIFY, &nidata);
watcher->icon_blinking = HICON_FILETYPE[filetype];
watcher->icon_blink_count = ICON_BLINK_COUNT;
}
CloseClipboard();
break;
}
}
}
}
return FALSE;
}
case WM_NOTIFY_FILE:
{
// File change detected.
LONG_PTR lp = GetWindowLongPtr(hWnd, GWLP_USERDATA);
ClipWatcher* watcher = (ClipWatcher*)lp;
if (watcher != NULL) {
FileEntry* entry = checkFileChanges(watcher);
if (entry != NULL) {
if (logfp != NULL) {
fwprintf(logfp, L"updated file: path=%s\n", entry->path);
}
int index = rindex(entry->path, L'.');
if (0 <= index) {
WCHAR* ext = &(entry->path[index]);
if (_wcsicmp(ext, FILE_EXT_TEXT) == 0) {
// CF_UNICODETEXT
int nchars;
LPWSTR text = readTextFile(entry->path, &nchars);
if (text != NULL) {
if (OpenClipboard(hWnd)) {
EmptyClipboard();
setClipboardOrigin(entry->path);
setClipboardText(text, nchars);
CloseClipboard();
}
free(text);
}
} else if (_wcsicmp(ext, FILE_EXT_BITMAP) == 0) {
// CF_DIB
BITMAPINFO* bmp = readBMPFile(entry->path);
if (bmp != NULL) {
if (OpenClipboard(hWnd)) {
EmptyClipboard();
setClipboardOrigin(entry->path);
setClipboardDIB(bmp);
CloseClipboard();
}
free(bmp);
}
}
}
}
}
return FALSE;
}
case WM_COMMAND:
{
// Command specified.
LONG_PTR lp = GetWindowLongPtr(hWnd, GWLP_USERDATA);
ClipWatcher* watcher = (ClipWatcher*)lp;
switch (LOWORD(wParam)) {
case IDM_OPEN:
if (watcher != NULL) {
if (OpenClipboard(hWnd)) {
openClipFile();
CloseClipboard();
}
}
break;
case IDM_EXIT:
SendMessage(hWnd, WM_CLOSE, 0, 0);
break;
}
return FALSE;
}
case WM_TIMECHANGE:
{
// Filesytem/Network share change detected.
// NOTICE: We wanted to check if wParam is DBT_DEVICEARRIVAL.
// But it doesn't work when the system is suspended.
LONG_PTR lp = GetWindowLongPtr(hWnd, GWLP_USERDATA);
ClipWatcher* watcher = (ClipWatcher*)lp;
if (watcher != NULL) {
// Re-initialize the watcher object.
StopClipWatcher(watcher);
}
return TRUE;
}
case WM_NOTIFY_ICON:
{
// UI event handling.
POINT pt;
HMENU menu = GetMenu(hWnd);
if (menu != NULL) {
menu = GetSubMenu(menu, 0);
}
switch (lParam) {
case WM_LBUTTONDBLCLK:
if (menu != NULL) {
UINT item = GetMenuDefaultItem(menu, FALSE, 0);
SendMessage(hWnd, WM_COMMAND, MAKEWPARAM(item, 1), NULL);
}
break;
case WM_LBUTTONUP:
break;
case WM_RBUTTONUP:
if (GetCursorPos(&pt)) {
SetForegroundWindow(hWnd);
if (menu != NULL) {
TrackPopupMenu(menu, TPM_LEFTALIGN,
pt.x, pt.y, 0, hWnd, NULL);
}
PostMessage(hWnd, WM_NULL, 0, 0);
}
break;
}
return FALSE;
}
case WM_TIMER:
{
LONG_PTR lp = GetWindowLongPtr(hWnd, GWLP_USERDATA);
ClipWatcher* watcher = (ClipWatcher*)lp;
if (watcher != NULL) {
UINT_PTR timer_id = wParam;
if (timer_id == watcher->blink_timer_id) {
// Blink the icon.
if (watcher->icon_blink_count) {
watcher->icon_blink_count--;
BOOL on = (watcher->icon_blink_count % 2);
NOTIFYICONDATA nidata = {0};
nidata.cbSize = sizeof(nidata);
nidata.hWnd = hWnd;
nidata.uID = watcher->icon_id;
nidata.uFlags = NIF_ICON;
nidata.hIcon = (on? watcher->icon_blinking : HICON_EMPTY);
Shell_NotifyIcon(NIM_MODIFY, &nidata);
}
} else if (timer_id == watcher->check_timer_id) {
// Check the filesystem.
StartClipWatcher(watcher);
}
}
return FALSE;
}
case WM_CLOSE:
DestroyWindow(hWnd);
return FALSE;
default:
if (uMsg == WM_TASKBAR_CREATED) {
LONG_PTR lp = GetWindowLongPtr(hWnd, GWLP_USERDATA);
ClipWatcher* watcher = (ClipWatcher*)lp;
if (watcher != NULL) {
// Register the icon.
NOTIFYICONDATA nidata = {0};
nidata.cbSize = sizeof(nidata);
nidata.hWnd = hWnd;
nidata.uID = watcher->icon_id;
nidata.uFlags = NIF_ICON | NIF_MESSAGE | NIF_TIP;
nidata.uCallbackMessage = WM_NOTIFY_ICON;
nidata.hIcon = HICON_EMPTY;
StringCchPrintf(nidata.szTip, _countof(nidata.szTip),
MESSAGE_WATCHING, watcher->srcdir);
Shell_NotifyIcon(NIM_ADD, &nidata);
}
}
return DefWindowProc(hWnd, uMsg, wParam, lParam);
}
}
static LRESULT CALLBACK cliprdr_proc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{
static wfClipboard* clipboard = NULL;
switch (Msg)
{
case WM_CREATE:
DEBUG_CLIPRDR("info: WM_CREATE");
clipboard = (wfClipboard*)((CREATESTRUCT*) lParam)->lpCreateParams;
if (!AddClipboardFormatListener(hWnd)) {
DEBUG_CLIPRDR("error: AddClipboardFormatListener failed with %#x.", GetLastError());
}
clipboard->hwnd = hWnd;
break;
case WM_CLOSE:
DEBUG_CLIPRDR("info: WM_CLOSE");
RemoveClipboardFormatListener(hWnd);
break;
case WM_CLIPBOARDUPDATE:
DEBUG_CLIPRDR("info: WM_CLIPBOARDUPDATE");
if (clipboard->sync)
{
if ((GetClipboardOwner() != clipboard->hwnd) &&
(S_FALSE == OleIsCurrentClipboard(clipboard->data_obj)))
{
if (clipboard->hmem)
{
GlobalFree(clipboard->hmem);
clipboard->hmem = NULL;
}
cliprdr_send_format_list(clipboard);
}
}
break;
case WM_RENDERALLFORMATS:
DEBUG_CLIPRDR("info: WM_RENDERALLFORMATS");
/* discard all contexts in clipboard */
if (!OpenClipboard(clipboard->hwnd))
{
DEBUG_CLIPRDR("OpenClipboard failed with 0x%x", GetLastError());
break;
}
EmptyClipboard();
CloseClipboard();
break;
case WM_RENDERFORMAT:
DEBUG_CLIPRDR("info: WM_RENDERFORMAT");
if (cliprdr_send_data_request(clipboard, (UINT32) wParam) != 0)
{
DEBUG_CLIPRDR("error: cliprdr_send_data_request failed.");
break;
}
if (!SetClipboardData((UINT) wParam, clipboard->hmem))
{
DEBUG_CLIPRDR("SetClipboardData failed with 0x%x", GetLastError());
if (clipboard->hmem)
{
GlobalFree(clipboard->hmem);
clipboard->hmem = NULL;
}
}
/* Note: GlobalFree() is not needed when success */
break;
case WM_CLIPRDR_MESSAGE:
DEBUG_CLIPRDR("info: WM_CLIPRDR_MESSAGE");
switch (wParam)
{
case OLE_SETCLIPBOARD:
DEBUG_CLIPRDR("info: OLE_SETCLIPBOARD");
if (wf_create_file_obj(clipboard, &clipboard->data_obj))
{
if (OleSetClipboard(clipboard->data_obj) != S_OK)
{
wf_destroy_file_obj(clipboard->data_obj);
clipboard->data_obj = NULL;
}
}
break;
default:
break;
}
break;
case WM_DESTROYCLIPBOARD:
case WM_ASKCBFORMATNAME:
case WM_HSCROLLCLIPBOARD:
case WM_PAINTCLIPBOARD:
case WM_SIZECLIPBOARD:
case WM_VSCROLLCLIPBOARD:
default:
return DefWindowProc(hWnd, Msg, wParam, lParam);
}
return 0;
}
VOID ClipboardSample(
__in HWND hWindow)
{
//
// Call GetUpdatedClipboardFormats to get the number of clipboard formats,
// without getting the clipboard formats themselves
//
UINT numberOfClipboardFormats = 0;
GetUpdatedClipboardFormats(NULL, 0, &numberOfClipboardFormats);
_tprintf(_T("GetUpdatedClipboardFormats: initial number of clipboard formats: %d\n\n"),
numberOfClipboardFormats);
//
// Add the sample window to the list of clipboard format listeners
//
if (AddClipboardFormatListener(hWindow))
{
_tprintf(_T("AddClipboardFormatListener: Sample window added to list of clipboard format listeners\n\n"));
}
//
// Add bitmap data to the clipboard, which will generate a WM_CLIPBOARDUPDATE message
//
AddBitmapDataToClipboard(hWindow);
//
// Peek for a WM_CLIPBOARDUPDATE message
//
MSG message = {0};
PeekMessage(&message, hWindow, WM_CLIPBOARDUPDATE, WM_CLIPBOARDUPDATE, PM_REMOVE);
if (message.message == WM_CLIPBOARDUPDATE)
{
_tprintf(_T("Sample window received WM_CLIPBOARDUPDATE message\n\n"));
}
//
// Call GetUpdatedClipboardFormats, getting the list of formats
//
UINT* clipboardFormats = new UINT[numberOfClipboardFormats + 10];
if (GetUpdatedClipboardFormats(
clipboardFormats,
numberOfClipboardFormats + 10,
&numberOfClipboardFormats))
{
_tprintf(_T("GetUpdatedClipboardFormats: number of clipboard formats written: %d\n\n"),
numberOfClipboardFormats);
}
//
// Remove the sample window from the list of clipboard format listeners
//
if (RemoveClipboardFormatListener(hWindow))
{
_tprintf(_T("RemoveClipboardFormatListener: sample window removed from list of clipboard format change listeners\n\n"));
}
//
// Add bitmap data to the clipboard, which will generate a WM_CLIPBOARDUPDATE message
//
AddBitmapDataToClipboard(hWindow);
//
// Peek for a WM_CLIPBOARDUPDATE message
//
message.message = 0;
PeekMessage(&message, hWindow, WM_CLIPBOARDUPDATE, WM_CLIPBOARDUPDATE, PM_REMOVE);
if (message.message != WM_CLIPBOARDUPDATE)
{
_tprintf(_T("Sample window did NOT receive the WM_CLIPBOARDUPDATE message\n\n"));
}
DestroyWindow(hWindow);
delete [] clipboardFormats;
}