Thread is terminated for no apparent reason - c++

Question

So I am currently making a system to list all visible windows and then choose a random one. The code exists and is working.. in 32-bit. The problem is that it won't work when compiling for 64-bit. It does not even hit my breaking point before terminating the thread. I have also tried using a try block with the same result. The thread exit code is 0. NOTE: The code is messy due to it being filled with debugging and testing stuff.
Here is my code:
BOOL CALLBACK EnumWindowsProc(HWND hwnd, LPARAM lParam)
{
wchar_t wnd_title[2048]; // Will be replaced
SendMessage(hwnd, WM_GETTEXT, sizeof(wnd_title), (LPARAM)wnd_title);
if (!hwnd || !IsWindowVisible(hwnd) || !SendMessage(hwnd, WM_GETTEXT, sizeof(wnd_title), (LPARAM)wnd_title)) {
return TRUE;
}
std::vector<HWND>& Windows = *reinterpret_cast<std::vector<HWND>*>(lParam);
Windows.push_back(hwnd);
OutputDebugString(wnd_title);
OutputDebugString(L"\n");
return TRUE;
}
std::vector<HWND> GetOpenWindows() {
std::vector<HWND> Windows;
EnumWindows(EnumWindowsProc, reinterpret_cast<LPARAM>(&Windows));
return Windows;
}
void GetRandomWindow() {
stringstream ss; // For Debug
std::ostringstream stream; //For Debug
std::vector<HWND> Windows = GetOpenWindows();
int ChosenWindow = Utils::RandIntRange(0, Windows.size());
if (ChosenWindow < Windows.size()) { // Breaking point here (HIT)
TCHAR wnd_title[MAX_PATH];
SendMessage(Windows[ChosenWindow], WM_GETTEXT, MAX_PATH, (LPARAM)wnd_title); //Breaking point here (NOT HIT)
OutputDebugString(L"\n");
OutputDebugString(wnd_title);
MessageBox(NULL, L"Hi", L"Test", MB_OK);
}
}

Answer 1

The thread was terminated because the wrong size was passed to the message. The thread hang issue was fixed by using SendMessageTimeout(...); instead of SendMessage(..);. This works because a window was not responding to any messages.
(Answer is for people who have the same issue)
Thanks to Igor Tandetnik and Peter for the help!