initialize variables

Author: stefankueng

src/MainDlg.cpp

@@ -299,7 +299,7 @@ bool CMainDlg::DoMouseUp(UINT /*message*/, WPARAM /*wParam*/, LPARAM /*lParam*/)
     if (hwndTemp == *this)
         return false;
 
-    TCHAR szText[256];
+    TCHAR szText[256]{};
     _stprintf_s(szText, _countof(szText), _T("0x%p"), m_hwndFoundWindow);
     SetDlgItemText(*this, IDC_WINDOW, szText);
 
@@ -428,7 +428,7 @@ bool CMainDlg::SendPostMessage(UINT id)
     UINT   msg    = 0;
     WPARAM wparam = 0;
     LPARAM lparam = 0;
-    TCHAR  buf[MAX_PATH];
+    TCHAR  buf[MAX_PATH]{};
     TCHAR* endptr = nullptr;
 
     ::GetDlgItemText(*this, IDC_MESSAGE, buf, _countof(buf));
@@ -500,7 +500,7 @@ bool CMainDlg::SendPostMessage(UINT id)
                 0,
                 nullptr))
         {
-            lpDisplayBuf = LocalAlloc(LMEM_ZEROINIT, (lstrlen(static_cast<LPCTSTR>(lpMsgBuf)) + 40) * sizeof(TCHAR));
+            lpDisplayBuf = LocalAlloc(LMEM_ZEROINIT, (lstrlen(static_cast<LPCTSTR>(lpMsgBuf)) + 40LL) * sizeof(TCHAR));
             if (lpDisplayBuf)
             {
                 _stprintf_s(static_cast<LPTSTR>(lpDisplayBuf), LocalSize(lpDisplayBuf) / sizeof(TCHAR), _T("error %lu: %s"), err, (LPTSTR)lpMsgBuf);

src/SendMessage.cpp

@@ -29,7 +29,7 @@
 #include <Psapi.h>
 
 // Global Variables:
-HINSTANCE     hInst; // current instance
+HINSTANCE     hInst = nullptr; // current instance
 std::wstring  windowTitle;
 std::wstring  windowClass;
 std::wstring  windowAccessiblename;
@@ -95,7 +95,7 @@ BOOL CALLBACK WindowEnumerator(HWND hwnd, LPARAM lParam)
     bool  bMatches = true;
     if (!windowTitle.empty())
     {
-        TCHAR buf[4096];
+        TCHAR buf[4096]{};
         GetWindowText(hwnd, buf, _countof(buf));
         if (windowTitle.substr(0, 4096).compare(buf) != 0)
             bMatches = false;
@@ -163,7 +163,7 @@ int APIENTRY _tWinMain(HINSTANCE hInstance,
     ::OleInitialize(nullptr);
     ::CoInitializeEx(nullptr, COINIT_APARTMENTTHREADED);
     // we need some of the common controls
-    INITCOMMONCONTROLSEX icex;
+    INITCOMMONCONTROLSEX icex{};
     icex.dwSize = sizeof(INITCOMMONCONTROLSEX);
     icex.dwICC  = ICC_LINK_CLASS | ICC_LISTVIEW_CLASSES | ICC_PAGESCROLLER_CLASS | ICC_PROGRESS_CLASS | ICC_STANDARD_CLASSES | ICC_TAB_CLASSES | ICC_TREEVIEW_CLASSES | ICC_UPDOWN_CLASS | ICC_USEREX_CLASSES | ICC_WIN95_CLASSES;
     InitCommonControlsEx(&icex);

src/WindowTreeDlg.cpp

@@ -125,10 +125,10 @@ BOOL CWindowTreeDlg::WindowEnumerator(HWND hwnd, LPARAM lParam)
 {
     auto* pThis = reinterpret_cast<CWindowTreeDlg*>(lParam);
 
-    TCHAR buf[4096];
+    TCHAR buf[4096]{};
     GetWindowString(hwnd, buf, _countof(buf));
 
-    TCHAR filter[MAX_PATH];
+    TCHAR filter[MAX_PATH]{};
     ::GetDlgItemText(*pThis, IDC_FILTER, filter, _countof(filter));
     if (filter[0] == '\0' || StrStrI(buf, filter) != nullptr)
     {
@@ -149,10 +149,10 @@ BOOL CWindowTreeDlg::ChildWindowEnumerator(HWND hwnd, LPARAM lParam)
 {
     auto* pThis = reinterpret_cast<CWindowTreeDlg*>(lParam);
 
-    TCHAR buf[4096];
+    TCHAR buf[4096]{};
     GetWindowString(hwnd, buf, _countof(buf));
 
-    TCHAR filter[MAX_PATH];
+    TCHAR filter[MAX_PATH]{};
     ::GetDlgItemText(*pThis, IDC_FILTER, filter, _countof(filter));
     if (filter[0] == '\0' || StrStrI(buf, filter) != nullptr)
     {