Dont manage hanging and debugged windows

src/dwm-win32.c

@@ -114,6 +114,7 @@ struct Client {
  bool ignoreborder;
  bool border;
  bool wasvisible;
+ bool ishanging;
  bool isfixed, isurgent; // XXX: useless?
  bool iscloaked; // WinStore apps
  Client *next;
@@ -640,13 +641,19 @@ getclienttitle(HWND hwnd) {
  return buf;
 }
 
+HANDLE
+getclientprocess(HWND hwnd) {
+ DWORD processid = 0;
+ GetWindowThreadProcessId(hwnd, &processid);
+ HANDLE hProc = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, processid);
+ return hProc;
+}
+
 LPWSTR
 getclientprocessname(HWND hwnd) {
- DWORD processid = 0;
  DWORD buf_size = MAX_PATH;
  static wchar_t buf[MAX_PATH];
- GetWindowThreadProcessId(hwnd, &processid);
- HANDLE hProc = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, processid);
+ HANDLE hProc = getclientprocess(hwnd);
  if (hProc) {
  if (QueryFullProcessImageNameW(hProc, 0, buf, &buf_size)) {
  CloseHandle(hProc);
@@ -658,6 +665,18 @@ getclientprocessname(HWND hwnd) {
  return NULL;
 }
 
+BOOL
+isclientdebugged(HWND hwnd) {
+ BOOL debuggerPresent = false;
+ HANDLE hProc = getclientprocess(hwnd);
+ if (!CheckRemoteDebuggerPresent(hProc, &debuggerPresent)) {
+ CloseHandle(hProc);
+ return false;
+ }
+
+ CloseHandle(hProc);
+ return debuggerPresent;
+}
 
 HWND
 getroot(HWND hwnd) {
@@ -697,6 +716,10 @@ ismanageable(HWND hwnd) {
  return false;
  }
 
+ if (isclientdebugged(hwnd)) {
+ return false;
+ }
+
  if (getclient(hwnd))
  return true;
 
@@ -1344,6 +1367,19 @@ void
 showhide(Client *c) {
  if (!c)
  return;
+
+ if (isclientdebugged(c->hwnd)) {
+ c->ishanging = true;
+ unmanage(c);
+ return;
+ }
+
+ if (IsHungAppWindow(c->hwnd)) {
+ c->ishanging = true;
+ unmanage(c);
+ return;
+ }
+
  /* XXX: is the order of showing / hidding important? */
  if (!ISVISIBLE(c)) {
  if (IsWindowVisible(c->hwnd)) {
@@ -1517,9 +1553,11 @@ writelog(const Arg *arg) {
 void
 unmanage(Client *c) {
  debug(L" unmanage %s\n", getclienttitle(c->hwnd));
- if (c->wasvisible)
+
+ // Don't want to touch Window related functions on hanging windows
+ if (c->wasvisible && !c->ishanging)
  setvisibility(c->hwnd, true);
- if (!c->isfloating)
+ if (!c->isfloating && !c->ishanging)
  setborder(c, true);
  detach(c);
  detachstack(c);